With guitar rigs, connecting several pedals and amps together can often lead to noisy setups. Guitarists will sometimes turn to using noise gates as a means of trying to eliminate the problem. But these devices not only rob tone, they hamper the guitar’s attack time and limit natural sustain. The following page gives you several recommendations that can help eliminate noise.
A good option is to add a copper or foil shield inside the pickup and electronics cavity of the guitar. Copper shielding with an adhesive on one side works best. Be careful to push the copper tight against the wood to ensure you do not cause any electrical shorts. You should then shield the pickguard if you have a Strat type guitar. All of the shields should then be tied together (soldered) to create a uniform shell around the electronics. This is then grounded at the guitar jack.
Most electrical systems used around the world today employ three conductors with power, common and a safety ground. When connecting two amplifiers or effects devices together, hum and buzz in the form of a ground loop can often plague the guitar system. This problem can be attributed to a number of factors including differing DC voltages between the two amps or effects, spurious signals traveling through the audio grounds, stray DC voltages causing havoc or even problems with the electrical wiring.
Pedalsnake: Isolation And Grounding
Some folks will go as far as removing the safety ground in order to find a solution. This practice is illegal, unsafe and could lead to death. The safety ground is there to protect your life.
One of the best places to start is to connect all of your amps and effects into a common power bar or a rack-mount power source and surge protector. This practice ensures that the electrical circuit that is supplying your equipment is wired to the same phase. Some older homes will be wired differently at different outlets which essentially means you are combining a hot wire with a ground – through your amp and guitar! Bringing all the electrical grounds together reduces the risk and is a trick that studio engineers have been using for years.
Audio ground. When you connect two pieces of gear together, you are joining these two grounds together. This can create what is commonly known as a ground loop. This can introduce 50 or 60 cycle hum into your guitar system which can be anywhere from slight to extreme, depending on the equipment at hand.
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Where signal is produced. Because the input and output are not connected – they are magnetically bridged – any DC noise that may be problematic is eliminated. This is because transformers only pass alternating current (AC) not direct current (DC).
It is important to note that not all transformers are created equally. High performance transformers as made by companies such as Jensen employ nickel core materials, special ultra-thin wires, precise winding techniques and various types of shields. These ‘passive devices’ transfer the signal without introducing phase shift, distortion or artefact.
Electric guitars are referred to as hi-Z or high- impedance instruments. Where a balanced microphone will have an impedance of around 200 to 600 ohms, a guitar will be in the 7, 000 to 16, 000 range (10, 000 ohms typical). Since high impedance circuits are more susceptible noise, a good option is to buffer the signal before driving a number of pedals or long cables. A buffer is a unity gain amplifier that does not boost the signal; it merely drives it at a lower impedance which in turn will reduce noise.
Question] My Amp Is Making A Terrible Buzzing Sound That Goes Away When I Turn The Bottom Most Guitar Tone Knob Down To 0. What Could Be Causing This Problem And Is
JD7 Guitar Distro & Splitter The Radial JD7 Injector is a class-A guitar distro/splitter with built-in Radial DI and Reamp that can drive up to seven amps or pedal chains simultaneously.
Although this sounds easy enough, most tone savvy guitarists will tell you they hate the sound of buffers. This is because most buffers employ integrated circuits (ICs or chips) to amplify the signal. The chips deliver huge amounts of positive gain (+) while adding huge amounts of negative feedback (-) to control their output. Combine a (+) with a (-) and you are sure to screw things up! Radial buffers employ discrete components (individual transistors, resistors and capacitors) and our unique class-A circuitry to eliminate negative feedback while maintaining the tonal integrity of the original signal.
Further, the ‘sound’ of a tube circuit – or guitar connected directly to your tube amp – sounds very different when a buffer is introduced in between the two devices. We figured this out a long time ago during the development of the JD7 Injector – a high end multi-output guitar
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Signal buffer. By adjusting the load using Drag control, you can tailor the tone to replicate the sound as if connected directly to your amp.
In other words, if you place a buffer in front of your wah, it will sound different. A better solution is to employ an effects loop pedal like the BigShot EFX that allows you to take your fuzz and wah out of the circuit when not in use.
BigShot EFX Effects Loop Switcher The BigShot EFX is a true-bypass effects loop switcher that lets you set up two separate effects loops and insert them into your pedal chain at will.
Guitar Amp Hum With Nothing Plugged In (fix Buzzing & Humming)
Once all of your pedals have been put in the chain, you can then send the final output to a device like the BigShot ABY, Twin City or Switchbone. All of these incorporate isolation transformers to eliminate ground loops.
As a side note, if you look inside the JD7 Injector, you will note that it has individual buffers for each output and these drive a bunch of Jensen transformers. Transformers are passive devices. If you send you guitar directly into a transformer, the tone will change. By first buffering the signal, you will dramatically reduce the tonal effect of the transformer. With guitarists as diverse as Carlos Santana, John Petrucci, and Steve Vai all using Radial buffers, you can rest assured that the natural tone of your guitar will not be compromised.
BigShot ABY True-Bypass Switcher The Radial BigShot ABY is a true-bypass ABY switcher that toggles or combines two guitar amplifiers in phase and without hum & buzz caused by ground loops.
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Twin-City Active Amp Switcher The Twin-City is an active ABY switcher that toggles or combines two guitar amplifiers in phase and without noise, with a class-A input buffer to drive both amps without any loss of gain.
Switchbone V2 Amp Switcher & Booster The Switchbone V2 is a feature-packed ABY pedal that also features a third output to allow switching between up to three amplifiers without noise.
Get a monthly round-up of the best from our blog, including Education Articles, Product News and Giveaways , sent directly to your inbox. We send out very few emails and will never pass your data on to any third partyThere is just no sound like an electric guitar. From wild feedback to massive distortion and endless canyons of delays and echoes – a shortage of otherworldly noises tends not to be an issue. All noises aren’t necessarily desirable though.
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Unwanted noise can disrupt your practice, waste studio time or even ruin a gig. So, how do we keep the noises we like and preserve our tone while removing the unwanted noise?
Well, you first have to determine where that noise is coming from. This is often easily done through some basic troubleshooting. Once you’ve diagnosed the root cause, you can then take the necessary actions to remove that unwanted noise.
In this article, we’re going to cover what you need to know to rid your electric guitar, amp and signal chain from that snap, crackle and hum.
Why Is This Guitar Making So Much Noise?
Amplifiers can store potentially lethal levels of electricity, even when turned off and unplugged. It’s highly recommended that you have a technician handle anything that involves opening the chassis. Always unplug and wait for capacitors to discharge before making repairs. Never touch the amplifier with both hands while the chassis is open. A lethal dose of electric current could travel between your arms and stop your heart. Use the “one hand in your pocket rule”, using just one hand when working on a powered amp.
We’ve established the fact that electric guitar noise can be a major problem for many guitarists. Identifying, diagnosing, and fixing the problem can especially be a headache for those less experienced guitarists.
However, even the most seasoned guitarist might not understand the basic principle of what makes their guitar work. This doesn’t even take into account issues that pertain to your amp and effects.
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There are a handful of common sources of guitar noise. For the purpose of this article, we’re going to divide the types of guitar-related noises into two basic categories, which relate directly to your first step in diagnosing the problem.
If there is an annoying buzz or hum coming out of your amp with nothing plugged in, that means your problem likely lies in your amp.
After ruling out your amp you should bypass all effects, by plugging straight in. If you’ve now introduced a problem that wasn’t present with the
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