What’s That Noise?!

Mark Callenberg

What’s That Noise?!

A TAE Troubleshooting Guide to Hi-Fi Setup

How to Use This Guide

If your system is humming, crackling, booming, sounding vague, or just not doing what it should, this guide is here to help you get to the bottom of it. We have put it together as a practical troubleshooting tool, built around the problems we see and hear most often.

The best place to begin is with Start With the Signal Chain. That section gives you the foundation for everything that follows and helps make sense of where problems usually begin. From there, jump to the section that sounds most like the issue you are hearing and work through it step by step.

Most problems have a cause. Most causes can be found. And a lot of them are easier to fix than people think.

Table of Contents

One of the most common questions we get in hi-fi is not about wattage, streaming platforms, or whether a speaker cable should cost more than a used hatchback.

It’s this:

“Why is my system making that noise?”

Sometimes it’s a faint hum. Sometimes it’s a crackle through one channel. Sometimes the bass sounds strange, the image feels vague, or the turntable starts howling the moment you turn it up. None of it is especially rare, and most of it is fixable.

The good news is that noise in a hi-fi system usually has a cause. The bad news is that the cause is not always where people think it is.

A lot of owners assume the amplifier is faulty, the speaker is damaged, or the cartridge is worn out. Sometimes that’s true. More often, the problem comes back to setup, placement, grounding, connections, or one little mismatch somewhere in the chain quietly causing trouble.

It is also worth saying up front that no system will sound exactly the same in your home as it does in a shop. It never will. A good dealer will try to demonstrate gear in a space that feels relevant and offer sensible matching advice, but similar is the key word. Similar, not identical. Even if every component were the same right down to the last cable, the room, placement, surfaces, power, and layout at home will still change the result.

Which is precisely why setup matters.

And it is also why, when you come in to buy a system, we ask a lot of questions. Because we do. We are not being nosy. We are trying to build a sonic blueprint in our heads. Some speakers work better than others in different environments. Some even have room correction built in. A purist may hate the idea and declare that such things should not exist. Such things are witchery. But not everyone has a perfectly proportioned hi-fi room with soft furnishings in all the right places and acoustic treatment hiding behind tasteful decor.

In fact, most real homes are the exact opposite. Hard floors, large glass windows, open-plan spaces, reflective surfaces everywhere, and not much in the way of acoustic mercy. These rooms were not designed with audio in mind. That does not mean the person living in them should be robbed of properly enjoyable music or cinema.

That is why the more information you give us, the better the outcome tends to be. Photos, floor plans, room dimensions, where the speakers need to go, where the furniture is, how the system will actually be used, all of it helps. The more we know, the better chance we have of steering you toward something that will work in the real world, not just in theory.

And while we are here, read the instructions. Then read them again. More importantly, make sure you actually understand them. A surprising number of problems start right there.

1. Start With the Signal Chain

Before you chase hum, crackle, weak bass, strange imaging, or a system that just never sounds quite right, it helps to understand one basic idea.

A hi-fi system is a signal chain.

That simply means the music passes through a series of stages, from the source all the way to the speakers. Each stage has a job to do, and each stage has an effect on the end result. If something goes wrong early on, it usually carries through the rest of the system.

In other words, the output is only ever as good as the input.

Take vinyl as the obvious example. The chain starts with the record itself. Not the turntable. The record. If the record is dirty, worn, poorly pressed, full of static, pressed on coloured vinyl, or filled with glitter — The Life of a Showgirl, we’re looking at you here — all of that can affect the result before the rest of the system even gets involved. Sometimes novelty and sound quality happily coexist. Sometimes they have a bit of a falling out. We even had a client bring one in wondering about a noise right at the start of the record. Sure enough, the stylus was picking up the glitter in the opening grooves. Subtle, but audible.

Dust in the groove, bits on the surface, residue from old sleeves, fingerprints, all of it is there for the stylus to pick up. From there, the cartridge converts that movement into a tiny electrical signal. That signal travels down the tonearm wiring, through the phono lead, into the phono stage, then on to the amplifier, and finally out to the speakers.

By the time the sound reaches your ears, it has already been through a surprising number of processes. In a vinyl setup, you are dealing with the physical condition of the record, the stylus tracking the groove, the cartridge converting movement into signal, internal tonearm wiring, the phono cable, gain and equalisation in the phono stage, line-level amplification, speaker-level output, the speaker drivers turning electrical energy back into movement, the room having its usual opinion on all of it, and then finally your ears getting involved. So yes, there is a bit going on.

A simple vinyl signal chain looks like this:

Record → stylus → cartridge → tonearm wiring → phono cable → phono stage → amplifier → speaker cable → speakers → room → ears

And yes, the ears are part of the chain too. They are also the hardest component to calibrate.

That same thinking applies to every other source as well.

With CD, the chain starts at the disc and transport. With streaming or a media player, it starts at the file quality, the source device, and the quality of the network delivering it. Let’s pause on that for a second, because people love talking about internet speed and often forget about internet quality. You can have all the speed in the world, but if the connection is unstable, noisy, or dropping packets, do not expect the stream to be amazing. Packet loss is real. If the data is not getting there properly, the rest of the system is already on the back foot. With Bluetooth, the signal may already be compressed before it even reaches the system. Different source, same rule. The system can only work with what it is being fed.

That does not mean every source has to be expensive to sound good. It just means weak links are real. A revealing system will not usually hide a poor signal. It will do the opposite and make it easier to hear.

This is also why people sometimes upgrade one part of a system and end up underwhelmed. They improve the amplifier, or buy better speakers, but the source is still the limiting factor. Or the setup around it is poor. Or the signal coming in is already compromised before it gets moving.

Hi-fi can only pass along what it is given. It can shape it, amplify it, and reveal more or less of it, but it cannot invent quality that was never there in the first place.

That’s the point of the signal chain. Every step matters.

And sometimes the problem is not exotic at all. Sometimes it’s dust on the record, a dirty stylus, a loose cable, or a poor connection sitting quietly at the start of the line and making a mess of everything downstream.

2. Pops and Crackles

Once you understand the signal chain, pops and crackles start to make a lot more sense.

With vinyl, some noise can be part of the format. A tiny bit of surface noise on a record is not the end of civilisation. But there is a difference between the occasional light tick and a system that sounds like it is frying breakfast in the left channel.

Pops and crackles usually come from one of a few places.

The first is the record itself. Dust, static, grime in the groove, fingerprints, old cleaning residue, groove wear, and poor pressing quality can all make themselves known pretty quickly. A record can look clean and still be carrying enough rubbish in the groove to cause trouble, especially if it has been living a hard life in bad sleeves or on questionable turntables.

Then there is the stylus. A dirty stylus will not track properly, and neither will a worn one. If it is carrying fluff on the tip, or if it is past its best, it will often sound rougher, edgier, and less composed than it should. That can show up as crackle, mistracking, or a general sense that the record is working harder than it should be.

Cartridge setup matters too. If alignment is off, if tracking force is wrong, or if anti-skate is not in the ballpark, the stylus may not be sitting in the groove the way it should. That can lead to noise, distortion, and a slightly ragged sound that people often blame on the pressing when the setup is really the culprit.

Static is another one. It is easy to underestimate, but static can absolutely make a record noisier than it ought to be. Some records seem to attract half the room before they even hit the platter, and once that starts, the stylus has plenty to pick up. Dry environments, synthetic brushes, poor sleeves, and some novelty pressings do not exactly help.

It is also worth saying that not every crackle is a vinyl problem. Loose headshell leads, poor contact at the cartridge pins, tired RCA connections, or a phono lead that is not happy can all introduce noise that gets mistaken for groove noise. That is why it pays to check the whole path rather than just glaring at the record like it has personally offended you.

The useful question is not just, “Is there noise?” It is, “What kind of noise is it, and when does it happen?”

If it is random and follows the same point on the record every time, it is likely in the groove. If it gets worse across multiple records, look at the stylus and setup. If it appears in one channel only, or comes and goes when cables are touched, there may be a connection issue in the chain.

This is where experience saves people a lot of money. A proper clean, a stylus inspection, and a setup check will often solve what people assume is a damaged cartridge or a bad pressing. Sometimes the fix is expensive. More often, it is just overdue maintenance.

Vinyl is wonderfully involving, but it is also gloriously honest. If the record is dirty, the stylus is tired, or the setup is off, it tends not to keep that to itself.

3. Noise Floor and Ground Hum

Once you move past pops and crackles, the next thing people usually notice is background noise. Not noise tied to the record itself, but noise sitting underneath everything else.

This is where noise floor and ground hum come into it.

The noise floor is the low-level background noise of the system when nothing much is happening. In a well-set-up system, it should be low enough that it does not draw attention to itself. You should not be sitting there thinking about hiss, buzz, or general background hash when you are meant to be listening to music.

That said, no system is completely silent. Some combinations are naturally noisier than others. A high-gain phono stage, very sensitive speakers, older valve gear, vintage equipment that has not been serviced properly, or a less-than-ideal source can all raise the baseline a bit. The trick is keeping that noise low enough that it stays in the background where it belongs.

Ground hum is different. Hum is usually more obvious, more annoying, and a lot less polite about making an entrance. It is that steady low-frequency drone that sits there reminding you something is not quite right. Once you hear it, you tend not to un-hear it.

In hi-fi, hum often comes down to grounding somewhere in the chain. Turntables are the usual suspects, especially if the earth lead is loose, missing, or connected incorrectly. One small grounding issue upstream and the whole system can let you know about it in fairly short order. We even had a client in recently who found that the hum disappeared the moment he held the ground lead. That is about as clear a sign as you can get that the grounding path was not right.

But it is not always the turntable. Hum can also come from a poorly grounded source, a power supply issue, a cable problem, or multiple components interacting in a way that creates a loop. Add a TV, a network device, a Foxtel box, a cheap power supply, vintage gear with tired components, or something else connected to the system, and suddenly you have another possible gremlin in the mix.

This is also where cable choice matters, though not in the dramatic “spend more and ascend” sort of way. A badly shielded interconnect, a loose termination, or a cable run sitting too close to power can absolutely add noise where it has no business being. Good cable choice is about suitability, shielding, connection quality, and common sense.

Power can play a part as well. We are not about to pretend every system needs an altar built around a power conditioner, but poor mains quality, noisy supplies, and multiple devices sharing dirty power can sometimes add their own flavour to the problem. We have seen this in very ordinary ways too. One client had an intermittent hum through his system that came and went for no obvious reason. It turned out the refrigerator was on the same circuit, and every time the fridge motor kicked in, the hum appeared. When it cycled off, the hum disappeared. A simple outlet filter fixed it completely. About a fifty-dollar solution, and not even a fault with the hi-fi itself.

It is also worth mentioning that decent power leads are often overlooked. We are not talking about cable mythology here, just basic build quality, shielding, and suitability. Some of the standard box-supplied leads are built down to a price, and while many are perfectly adequate, they are not always ideal for more sensitive equipment. If you have gone to the trouble of upgrading your interconnects and speaker cable, it seems odd to ignore the way the system is being fed in the first place. In the right system, a better-quality power lead can sometimes help reduce noise or avoid issues before they start. Not magic. Just one more part of the chain worth taking seriously. After all, every hi-fi system ends with electrical energy being turned into something you can hear.

Vintage gear deserves a quick mention here too. We love it. A good old amplifier, tuner, or turntable can still be a wonderful thing. But if you are buying vintage equipment, make sure it has been serviced properly and recently by a reputable technician. Nostalgia is lovely. Inherent issues, tired capacitors, noisy transistors, drifting values, and old connections are less charming. Nostalgia wears off fairly quickly when the hum starts.

The useful thing to remember is that hiss, hum, and buzz are not all the same problem.

A gentle hiss may be gain related.
A low hum usually points to grounding.
A buzz can suggest interference, power noise, or something nearby getting into the signal path.

That is why the first step is not panic. It is identification.

Where is the noise coming from? Is it in both channels or just one? Is it there on every source, or only on vinyl? Does it change with volume? Does it appear when another device is connected? Does it vanish when one component is removed from the chain?

Once you know that, the fixes usually become a lot less mysterious. Start with the obvious things. Check that the ground wire is properly connected. Reseat interconnects. Move signal cables away from power cables. Remove extra devices from the chain one at a time. Try another input. Try another source. If the hum only appears on one source, that narrows the field very quickly. If it appears across everything, the issue is probably further downstream.

That process matters, because background noise is often diagnosed badly. People assume the amp is faulty when the issue is actually upstream. Or they blame the speakers when the speakers are simply revealing what is already there.

A revealing system is a bit like an honest friend. Useful, but occasionally brutal.

The good news is that hum and noise floor problems are often fixable. Sometimes it is as simple as reconnecting a ground wire properly. Sometimes it is moving a cable. Sometimes it is removing one troublesome device from the chain. Sometimes sensible power treatment helps. Not glamorous, but effective.

And that is really the point. Background noise usually has a cause. The trick is finding the actual one, rather than firing the parts cannon at the system and hoping for a miracle.

4. Feedback and Vibration

Not every noise problem in hi-fi is electrical. Some of them are gloriously physical.

This is where feedback and vibration come in, and it is especially relevant with turntables, though not limited to them.

Acoustic feedback happens when energy from the speakers makes its way back into the source component, gets picked up again, amplified again, and sent back through the system. With a turntable, that usually means the cartridge is picking up vibration it has no business picking up. Once that loop gets going, things can unravel fairly quickly.

Sometimes it shows up as an obvious low-frequency howl or bloom when the volume goes up. Sometimes it is less dramatic than that. The bass gets thick, timing goes soft, and the whole presentation starts to sound a bit vague and unsettled. Nothing is technically broken, but nothing sounds quite right either.

This is one of the classic hi-fi traps. People start looking at cartridges, phono stages, or amplifiers when the real problem is that the turntable is being shaken by the room, the furniture, or the speakers themselves.

A flimsy cabinet can do it. A suspended timber floor can do it. Speakers too close to the rack can do it. A turntable sharing a surface with other vibrating equipment can do it. Even a piece of furniture that looks perfectly respectable can turn out to have all the structural integrity of warm custard once the volume comes up.

The fix is usually physical, not electrical.

A better support can make a huge difference. A rigid stand, a dedicated hi-fi rack, a proper wall shelf, or simply moving the turntable further away from the speakers can often solve problems that no amount of cable swapping will fix. Isolation can help too, but only when it is sensible and suited to the setup. Throwing random squishy things under equipment and hoping for enlightenment is not really a strategy.

We are big fans of proper speaker isolation stands too, particularly in real-world living room systems where speakers often end up on cabinets, shelves, or furniture that was never designed with acoustics in mind. A good isolation stand can help for a couple of reasons. It can reduce the cabinet’s own contribution to the sound, and it can also improve the speaker’s working height and angle. That matters more than people think. Pitching a centre channel up slightly toward the listening position can improve presence and lock dialogue more convincingly to the screen. A bookshelf speaker sitting on a cabinet can also benefit, not just by getting the tweeter closer to the right height, but by reducing the sonic fingerprint of the surface it is sitting on.

And feedback is not always dramatic. Sometimes it is subtle enough that people just think the speaker or room sounds a bit ordinary. A speaker surrounded by shelves can start to sound boxy because the sound is immediately reflecting off the surfaces around it. A large glass wall can throw energy straight back into the room and harden the sound. That is not the same thing as a turntable feedback loop, but it is still a form of unwanted interaction between the speaker, the room, and the surfaces around it.

Speaker placement matters here as well. If the speakers are exciting the furniture, corners, shelves, or floor too much, that energy has to go somewhere. And it will. Hi-fi is very democratic in that sense. Every surface in the room gets a vote.

It is also worth remembering that vibration does not only affect turntables. CD players, media players, valves, cabinets, shelves, and even speakers themselves can all behave differently depending on how and where they are supported. Some gear is more tolerant than others. Some is fussy. Some is quietly begging not to be stacked on a wobbly entertainment unit from 2007.

The practical clues are usually there if you know what to listen for.

If the problem gets worse as volume increases, feedback is worth suspecting. If the bass becomes thick or loose when the system is pushed, vibration may be involved. If the sound improves when you temporarily move the turntable, change the stand, angle the speaker, or isolate a component, that is a fairly strong hint that the issue is mechanical. If the sound is boxy, smeared, or oddly hard, it is also worth looking at what nearby surfaces may be reflecting back into the room.

And this is where setup earns its keep. A well-supported component, placed sensibly in the room, has a much better chance of doing its job properly. A poorly supported one may spend half its life trying to survive the environment around it.

That is the annoying beauty of hi-fi. It is not just about the boxes. It is also about what the boxes are sitting on, what is near them, and what the room is doing to all of it.

So if the system sounds odd, boomy, loose, boxy, or strangely unstable, do not assume it is all down to electronics. Sometimes the problem is not in the signal. Sometimes it is in the furniture, the floor, the glass, the shelving, or the room joining in where it was not invited.

5. Out of Phase

This one is wonderfully common, very easy to fix, and still missed more often than it should be.

A system that is out of phase will often still play music quite happily. Nothing explodes. Nothing obviously fails. It just sounds wrong. The centre image is vague, the bass is weak or oddly hollow, and the whole thing feels a bit flat and directionless. You sit there thinking, “That should sound better than this,” and you are absolutely right.

In most home systems, the usual cause is simple. One speaker has been wired with the polarity reversed. In plain English, one side is connected backwards. Red to red and black to black sounds like the sort of instruction nobody could possibly get wrong. And yet, here we are.

You would be amazed how many systems end up out of phase. Not just rushed DIY setups either. We have seen it in systems connected by owners, installers, and professional AV installers alike. In fact, if you asked every AV installer whether they had ever wired a system out of phase, every last one would be lying if they said no. It happens. The trick is catching it before it stays there.

When one speaker is wired out of phase with the other, the drivers are no longer moving together the way they should. Instead of working as a pair, they start fighting each other. That does not always kill the sound completely, but it absolutely robs the system of weight, focus, and proper stereo image.

The clues are usually pretty consistent. Vocals that should lock into the middle do not quite settle. Bass loses body and punch. The soundstage feels vague. Everything is there, but nothing really lands. In an AV receiver setup, the result can be just as annoying. Dialogue can lose focus, bass management can feel off, surround steering can get a bit strange, and the whole presentation can feel less convincing than it should. It is one of those faults that can make a perfectly good system sound strangely disappointing.

The best part is that the fix is usually gloriously simple. Check the speaker cable at both ends. Make sure positive goes to positive and negative goes to negative. Red in red. Black in black. No interpretive dance required.

That said, this is where it gets slightly more interesting. Sometimes you check the wiring at both ends, everything is correct, and the system still seems to read or sound out of phase. That is because not every phase-like result is actually caused by wiring. Location matters. Bounce and reflection matter. Speaker design matters. A room can absolutely trick your ears, and some speakers are designed to do a bit of that on purpose.

Dipole and bipole surrounds are a good example. They are meant to create a more diffuse, spacious soundfield, which can make direct phase cues feel less obvious. Certain room layouts can also smear imaging enough that people start chasing a wiring problem that is not there. Big reflections from side walls, cabinets, glass, or nearby surfaces can all muddy the picture.

So yes, basic speaker wiring is still the first place to look, because it is the easiest mistake to make and one of the easiest to miss. But if the cable is right and something still feels off, do not forget the room, the placement, and the speaker design itself.

This is also why setup matters so much. People often assume weak bass or poor imaging means they need a better amplifier, different speakers, or a more serious source. Sometimes the system does not need new gear at all. Sometimes it just needs somebody to look at the back of it properly. Sometimes it needs somebody to look at the room.

It is not glamorous, but it is real. A five-minute wiring check can save a lot of unnecessary head-scratching and a surprising amount of expensive guesswork.

So yes, out of phase is simple. Until it isn’t. Start with red in red and black in black, then work outward from there. It is basic, it matters, and it goes wrong more often than anyone likes to admit.

6. Poor Speaker Positioning

This is one of the biggest offenders in hi-fi and home cinema, mostly because it is so often underestimated.

People will spend real money on good speakers, decent electronics, proper sources, and then place the speakers wherever the furniture, the dog bed, and the interior styling committee happen to allow. Then they wonder why the system sounds a bit average. Strange little hobby, this.

Speaker positioning affects far more than most people realise. It changes bass weight, midrange clarity, stereo image, treble balance, timing, scale, and the general sense that the system is either working together or quietly arguing with itself.

A good speaker in the wrong place can sound surprisingly ordinary. A well-positioned speaker in a sensible room can sound far better than people expect.

It is also one of the most common things we hear from customers. “It doesn’t sound like it did in the shop.” Of course it doesn’t. The shop is not your home. We do our best to demonstrate gear in a space that feels relevant, and we try hard to match products sensibly, but that is where it stops. Similar is not the same. Even if every component were identical right down to the last cable, it would still sound different in another room. Different space, different surfaces, different reflections, different placement, different result.

That is why we ask where the speakers are going. It is not small talk. It matters. If we know the room, the distance from walls, the furniture, and how the system needs to live day to day, we can usually steer things in a much better direction.

The most common issue is speakers being too close to walls or corners. Put a speaker hard against the rear wall and you will usually get more bass, but not always better bass. Push it into a corner and you can end up with a thick, boomy, uneven low end that sounds impressive for about thirty seconds and then starts wearing thin. The room starts taking over, and not always in a helpful way.

And yes, this happens all the time. We have lost count of the number of rooms where the speakers were originally placed sensibly, only to find that someone’s better half had pushed them hard back against the wall because the cables were visible, the speaker was in the way, or the room looked tidier that way. Fair enough from a living-with-it point of view. Less ideal from the hi-fi point of view. If a speaker ends up hard against the wall when it was never meant to be there, a little hi-fi fairy is quietly dying.

That is why cable management matters more than people think. Nobody wants to see a bird’s nest of cabling sprawled across the room. A tidy system is easier to live with, easier to keep neat, and much more likely to stay where it was meant to stay. If the speakers are part of the room design rather than an afterthought, everyone tends to be happier.

Spacing matters too. Too close together and the soundstage collapses inward. Too far apart and the middle can fall out, leaving vocals and central images a bit lost. The system stops sounding like a joined-up performance and starts sounding like two speakers doing their own thing from opposite sides of the room.

Height matters as well. A tweeter firing at your knees is not exactly a recipe for great imaging. This is why stand height, cabinet height, and seating position all matter more than people think. Get the tweeter roughly where it needs to be and the whole presentation often snaps into better focus.

Toe-in plays a part too. Some speakers like to fire more directly toward the listening position. Others sound better a little straighter. Too much toe-in can harden the sound or make it feel a bit narrow. Too little and the image can lose focus. There is no universal magic angle, which is annoying if you enjoy certainty, but useful if you enjoy results.

This is also where room symmetry comes into play. If one speaker is firing into open space and the other is hard up against a side wall, do not expect the stereo image to behave itself. The room is no longer giving both speakers the same set of conditions, and the result is often a lopsided presentation that no amount of wishful thinking will fix.

Furniture can be a problem too. A bookshelf speaker shoved into a bookshelf is doing exactly what it sounds like. It is becoming part of the bookshelf. Put a speaker on a hollow cabinet and the cabinet starts having opinions. Put it too close to a TV unit, side wall, glass panel, or shelving cavity and you may end up with reflections, thickness, boxiness, or a general loss of clarity that gets blamed on the speaker itself.

Centre channels deserve a quick mention here too, because they are often treated terribly. Buried in a cabinet, sitting too low, firing at your shins, blocked by the lip of the furniture, and then somehow expected to produce crisp, believable dialogue. A good centre channel needs a clear path into the room and the right angle toward the listening position. Sometimes a simple isolation stand with a slight upward pitch is enough to make dialogue sound more present and more convincingly attached to the screen.

And yes, bookshelf speakers on cabinets can benefit from isolation stands for the same reason. They can improve tweeter height, allow better angle, and reduce the sonic contribution of the surface underneath. That is not voodoo. That is just not asking the furniture to sing along.

If the speakers really do need to live closer to a wall, that matters at the buying stage too. Tell us. We can suggest speakers that are more wall-friendly, including front-ported designs where appropriate. That is not a magic pill, but it can absolutely help. Better that than forcing the wrong speaker into the wrong position and acting surprised when the room objects.

And if cables are the real sticking point in the room, there is always another route. Go active. Sometimes simplifying the system is the smartest move, not the least serious one.

The clues here are usually easy enough to spot once you know what to listen for. Boomy bass, vague imaging, bright treble, hollow mids, boxy tone, weak centre fill, and sound that seems stuck to the speakers rather than floating between them can all point to placement rather than equipment quality.

The fix is rarely glamorous, but it works. Move the speakers. Pull them out from the wall a little. Adjust the distance between them. Change the toe-in. Raise them. Angle them. Shift the seating position. Get the centre channel aimed properly. Try isolation where it makes sense. In other words, stop assuming the problem is always electronic and start looking at geometry.

That is one of the enduring truths of hi-fi. Speaker positioning is not the finishing touch. It is part of the performance.

So if the system sounds off, do not just ask what you need to buy. First ask whether the speakers are actually where they should be. A bit of movement can do more than a lot of money.

7. Poor Cable Choice

Cables are one of those subjects in hi-fi that can turn sensible adults into medieval factions surprisingly quickly.

So let’s keep this grounded.

Yes, cables matter. No, that does not mean the answer is always to buy the most expensive one in the room and hope for spiritual improvement. Most cable problems are much less glamorous than that. Usually it is the wrong cable, a poor connection, bad routing, weak shielding, or cable that is simply not suited to the job.

That is the real point. Good cable choice is about suitability, build quality, and application. Not guesswork, and not mythology.

Interconnects, speaker cable, HDMI, network cable, subwoofer cable, power leads, all of them have a role to play. If one part of that chain is poorly made, badly terminated, damaged, or picking up noise from where it has been run, the system may not perform the way it should. Not because the laws of physics are offended, but because bad practice is still bad practice.

A few of the most common culprits are very ordinary: cheap interconnects with poor shielding, loose RCA terminations, speaker cable that is too thin for the length of the run, badly fitted banana plugs, oxidised bare wire, cables run tightly alongside power leads, kinked or crushed cable behind furniture, and HDMI cables doing their best impression of being fine while quietly causing havoc.

And then there is cable routing, which gets ignored far too often. A perfectly decent cable can still become part of the problem if it is bundled tightly with power, draped across a power supply, pinched behind a cabinet, or twisted into submission because someone wanted the back of the rack to look neat in a hurry. Tidy is good. Strangled is not.

This is also where people sometimes get caught between two bad ideas. One is that all cables are the same and none of it matters. The other is that every cable upgrade is automatically profound. Real systems live somewhere in the middle. Some cable changes make little difference. Some make a very obvious difference. Some are simply about solving a problem that should not have been there in the first place.

Shielding matters in the right places. Termination quality matters. Mechanical integrity matters. The length of the run matters. Matching the cable to the application matters. A long speaker run, a sensitive phono stage, a noisy home environment, or a subwoofer on the other side of the room all ask different things of a cable.

And this is where the sensible view helps. If you have gone to the effort of building a decent system, it makes sense not to undermine it with the cheapest possible links between components. That does not mean every cable needs to come with a velvet bag and a backstory. It just means the cable should be good enough for the job it is doing.

There is also a practical side to this that gets missed. A well-made cable is usually easier to live with. Better plugs grip properly. Better jackets hold up better over time. Better terminations are less likely to work loose. Better routing is easier to maintain. In other words, good cable choice is not only about sound. It is also about reliability.

And yes, speaker cable is part of this too. Put red in red, black in black, make sure the terminations are secure, and use something appropriate for the length and system. It does not need to be silly. It does need to be right.

The same applies to network cable in streaming systems. People can get very animated about streamers, DACs, and subscriptions, then forget that the network path still matters. If the connection is poor, unstable, or badly implemented, the gremlins do not care how good the rest of the system is.

The practical fix here is not difficult. Check for loose plugs. Check the condition of the cable. Make sure the run is sensible. Keep signal and power separated where possible. Use the right cable for the job. Replace obviously cheap, damaged, or poorly terminated leads before assuming a component has failed. Start with competence, then spend money only if the system actually asks for it.

Because that is the thing with cables. They are rarely the whole story, but they are often part of it. Ignore them completely and you may create problems. Worship them blindly and you may create different ones.

The useful middle ground is usually where the answer lives.

8. Change One Thing at a Time

This is probably the most useful advice in the whole article.

When something sounds wrong, resist the urge to change five things at once.

If you move the speakers, swap a cable, clean the stylus, change an input, and reset a setting all at once, you are only making it harder to work out what the problem actually was.

The fastest way to understand a problem is to isolate it.

Change one thing. Listen. Then change the next thing if you need to.

If the hum disappears when you disconnect the turntable, you have learned something. If the bass improves when the speakers come 200mm off the wall, you have learned something. If the crackle stays in the same place on the same record every time, you have learned something. If the system suddenly sounds more focused when you fix the polarity on one speaker, you have definitely learned something.

That is the whole game. Cause and effect.

Most hi-fi problems are not solved by guesswork. They are solved by paying attention to what changes, what stays the same, and what the system is trying to tell you.

Start simple. Check the obvious things first. Have I actually read and understood the instructions? Is it connected properly? Is it clean? Is it in the right place? Is it set correctly? Is it the source, or is it further downstream? Has anything else changed recently? A new cable, a moved cabinet, a new device on the same circuit, a speaker pushed back against the wall, a setting changed in a menu no one remembers touching?

That is also why reading the instructions matters more than people like to admit. A lot of problems are not mysterious. They are sitting there in plain sight, usually somewhere between page three and page seven of the manual, waiting to be noticed.

And if you get stuck, ask. That is what a good dealer is for. Not just to hand over a box and wish you luck, but to help work out what is actually going on when the result is not what it should be.

Because most of the time, there is a reason.

And most of the time, there is a fix.

9. Final Thoughts

Hi-fi and home cinema are full of small details that can have a surprisingly big effect. A bit of dust, a poor connection, a bad position, a grounding issue, a reflective room, the wrong cable, one speaker wired backwards, any one of them can be enough to throw the result off.

The upside is that most of these problems are fixable.

That is really the point of this guide. Not to make the hobby seem fussy for the sake of it, but to show that when something sounds wrong, there is usually a reason. Find the cause, fix the cause, and the system has a much better chance of doing what it was bought to do in the first place.

Make great music. Make great cinema. And stop making strange noises for all the wrong reasons.