52 votes
Accepted

Why do guitarists put tape on their amplifiers?

If you look closely at the picture, you'll notice that pieces of tape are placed in very specific positions: one in the middle of speaker cone and the second one on the edge of speaker cone. ...
el.pescado - нет войне's user avatar
32 votes

My guitar has no sound when the gain knob is turned off. Do all amps need need a little gain to be able to output sound?

Gain is the input level control, it decides how hard the input signal hits the preamp. Guitar amps often exploit the effect of hitting it HARD, overdriving it into distortion. Volume controls how ...
Laurence's user avatar
  • 93k
16 votes
Accepted

Guitar - How to switch from clean to hi-gain

Around time stamp 0:46 he steps on a gain/distortion/fuzz pedal with his left foot. Watch his leg under his fretting hand. Then he plays single notes in the neck pickup with a higher gain sound than ...
Todd Wilcox's user avatar
  • 56.8k
15 votes

Guitar - How to switch from clean to hi-gain

You can get (mostly) clean tones from a high-gain amp setting if you go into the amp with a very low-amplitude signal. To put it simply, the amp has a maximum signal level that it can handle cleanly; ...
Richard Metzler's user avatar
14 votes
Accepted

Theoretical difference between amp distortion and distortion from a pedal

As Todd Wilcox commented, there isn't a completely clear-cut classification, however the three categories of saturation-type effects are tube overdrive, fuzz, and transistor overdrive / distortion. ...
leftaroundabout's user avatar
13 votes

What is the value of having tube amp in guitar power amp?

It's an oversimplification to claim that "the tone change is done in the preamp". It's the complete signal chain that results in the final sound, including the power amp and the speaker ...
Matt L.'s user avatar
  • 20.1k
12 votes

Can I play a electric guitar through a bass amplifier?

Bass amps have been used by guitarists for many decades. In some instances, they work better for guitarists than other amps designed for guitars, especially the speakers. If you are going to use ...
Tim's user avatar
  • 193k
11 votes

Can you play two guitars through the same amp?

It is possible to mix the signal of two guitars before going in the amp. You can even plug two simultaneously into a single input with a simple Y-adaptor; you can mix the relative loudness with the ...
leftaroundabout's user avatar
10 votes

Why do guitar amps only use one type of speaker cone?

Hi fidelity reproduction of high frequencies is undesirable in electric guitar amplification. If you look at what actually comes out of a guitar amp, things get really messy around 5 - 6 kHz and then ...
Todd Wilcox's user avatar
  • 56.8k
10 votes
Accepted

Why do metal guitarists boost crunch channels on high gain amps?

Overdrive pedals like the tube screamer have a boost to the mid frequencies. When you turn up the output of the O/D pedal in the amp, the middle frequencies get more distorted, while the bass and ...
dropped_pocket's user avatar
10 votes

Using a bass guitar on a guitar amplifier through a bass pre-amplifier?

The basic problem with a bass guitar in a guitar amp is that speaker and cabinet are not built for the low frequencies of the bass guitar. That means that at the low notes, the speaker will convert ...
user36187's user avatar
  • 101
10 votes

Should I use PA speakers for a full band all the time?

I went down a similar path to eventually starting a full band to accompany me on stage in paying gigs vs playing just for fun. My band has bass, two guitars, drums and vocal mics for all four ...
Rockin Cowboy's user avatar
10 votes
Accepted

My guitar has no sound when the gain knob is turned off. Do all amps need need a little gain to be able to output sound?

Yes it is normal. The gain is the volume control of the input of the amplifier. The signal flow of the tube amplifier goes: Gain (preamp input) to tone stack (eq) to phase inverter stage (input to ...
MMJ2020's user avatar
  • 134
9 votes
Accepted

What do "Uber" and "Plexi" mean in an electric guitar part?

They are almost certainly to both distinguish between the two guitar parts and also indicate the two different guitar sounds. "Plexi" refers to the classic Marshall model 1959 100 watt head. This amp ...
Todd Wilcox's user avatar
  • 56.8k
9 votes

Why guitar amplifier manuals require turning on with master volume down

Depending on what amp, and what's plugged into it, when the master volume is at 0 there is nothing at all going to be amplified. Master is most important, as it controls everything on the amp. There ...
Tim's user avatar
  • 193k
9 votes
Accepted

Guitar Cabinet volume low

Am I misunderstanding how i can use this guitar cabinet [...]? Yes. It needs a "power amplifier" to drive it. Probably of the order of at least a Watt (typical guitar amplifiers are 5W - ...
DavidW's user avatar
  • 400
8 votes

What is the difference between an amp and a head?

To elaborate and visualize the previous answers a bit further, here's a legend: Amp/head: the device that amplifies the electrical signal. This is an electrical processor that does not produce ...
Shimmy Weitzhandler's user avatar
8 votes
Accepted

Can you play two guitars through the same amp?

Plugging two guitars into a guitar amplifier that is designed for one guitar at a time, can be done - but it's not recommended for reasons suggested in other answers. You can find many guitar amps ...
Rockin Cowboy's user avatar
8 votes

How can I prevent clipping when using a microphone with a tube amp into a PA?

As already said, mic-preamp clipping cannot possibly be an issue if you use any amp that's legal to operate without a strategic weapons license, and the sound guys know what they're doing. I would add ...
leftaroundabout's user avatar
8 votes

Why do metal guitarists boost crunch channels on high gain amps?

There are actually as many "metal" tones as there are metal guitarists. Some of the best metal guitarists in the world use no effects, but simply crank up their Marshall. Others will run a fuzz into ...
Doktor Mayhem's user avatar
  • 36.9k
8 votes

What is the characteristic reverb effect on Fender amps?

I'm not sure what you mean by the "aggressive"sound, but yes it's a thing, and it's called spring reverb. It's essentially a couple of transducers, connected at either end of one or more metal ...
Bacs's user avatar
  • 815
8 votes
Accepted

What is meant when a guitar amplifier does or does not "take" guitar pedals?

First, an amp "taking pedals well" has little to do with modeling amps specifically or internal effects of any kind. I don't have much experience with modern modeling amps but I'd guess that they are ...
user37496's user avatar
  • 4,138
8 votes
Accepted

Why does an open guitar cable buzz or hum?

The circuit isn't completely open. The cable acts as a capacitor (around 500 pF, depends on cable length and insulator properties), parallel to the input. That by itself wouldn't cause hum (it just “...
leftaroundabout's user avatar
8 votes

Speaker impedance: rewiring four 8 Ω speakers for use with 8 Ω amp output

What you have described is inaccurate. Four 8 ohm speakers wired in parallel would result in a 2 Ohm load not 32 Ohms. To achieve an ideal load for you amp, you'll need to wire 2 of the speakers in ...
skinny peacock's user avatar
8 votes
Accepted

Does instrument cable impedance matter?

You've correctly analysed why the cable impedance does not matter in the way it does for HF transmission lines. (Though, the assumption of vacuum light speed is actually not completely valid – the ...
leftaroundabout's user avatar
8 votes

Impulse response: does it represent a cabinet only or the whole chain used to record it?

The impulse response can represent any linear time invariant parts of the signal path. In practice this means frequency response and delay, so it is good representing room response and equalisation, ...
ojs's user avatar
  • 3,261
7 votes

How can I prevent clipping when using a microphone with a tube amp into a PA?

Get better sound guys. Clipping is an electronic phenomenon when the input signal is too hot for the circuitry, so the tops and bottoms of the waveform are getting shaved off. (This is bad because ...
NReilingh's user avatar
  • 35.3k
7 votes

Control 2 identical amps with single footswitch

Footswitch cables are wired usually very simply. Nevertheless you should not try using a Y-splitter here. There are two reasons: a) you don't know the behavior of the open switch on the amplifiers. ...
user32723's user avatar
7 votes

Incorporate guitar amp in my bass rig?

When I've done things like using multiple amps for different sounds, I've done it by splitting the signal from the instrument so that each amp has its own dedicated input from the instrument (signal ...
Jason Locke's user avatar
7 votes

Using a bass guitar on a guitar amplifier through a bass pre-amplifier?

@user36187 is right – a preamp will not change anything about the suitability of a guitar amp for amplifying bass. In fact, it would rather exacerbate the problems! Such preamps are designed to add a ...
leftaroundabout's user avatar

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