Input Jack Polll

[ehdwuld]

Some amps have a single input jack
some have several for different devices
the Excelsior has three
one for guitar
one for harmonica
one for some other crap I cant remember

back to my question:

my Laney GC80A has four
two on the Acoustic side
and two on the Electric side
as the amp has two amps sharing one speaker

each input is labeled either "HI"
or "LOW"

I would suppose that refers to Impedance

If I plug my passive pickup loaded guitars into the "HI" input
the amp is MUUUUCH louder

in the "LOW" input it is much cleaner

I like the tone of the "HI" input much better

when I kick on the Drive channel it gets crazy compressed with overtones and stuff

I think that one of the inputs is made for Active pickups
and one is for passive pickups

the amp is Solid State so it shouldnt hurt it to plug into either one
but which would ya'll think is the proper input?

HI
or LOW

 

[Agileguy_101]

Re: Input Jack Polll

Whichever one sounds better to you.

 

[Myaccount876]

Re: Input Jack Polll

I thought it refers to high and low output on some amps?

 

[Agileguy_101]

Re: Input Jack Polll

Input impedance has nothing to do with determining the volume of a circuit.

 

[ehdwuld]

Re: Input Jack Polll

Input impedance has nothing to do with determining the volume of a circuit.

so your take is, the jacks dont refer to Impedance , High Z, Low Z whatever?

 

[Agileguy_101]

Re: Input Jack Polll

The reason it has high and low impedance markings is because some instrument signals are high impedance and some are low impedance. For example, active pickups have a low input impedance to the high impedance of passives. You would theoretically use the respective jacks for each type of pickup, but it might sound better to do it the other way.

 

[Rich_S]

Re: Input Jack Polll

It doesn't have anything to do with impedance. Dual guitar input jacks labelled HI and LO refer to the signal level of the instrument. Generally, one jack has a bit more attenuation on it, to knock down particularly hot input signals. Which jack is which, is anyone's guess. On Marshall single-channel JCM800s, the HI jack actually added an entire extra tube gain stage (1/2 a 12AX7).

It's just about tone, and how hard you're driving the amp, and there is no right answer. Whichever sounds better to you.

 

[vinta9e]

Re: Input Jack Polll

I would suppose that refers to Impedance

It does make sense to equip an acoustic amp with a "super high impedance" input for passive piezo systems. On an 'electric' amp it would be pointless.

 

[ken361]

Re: Input Jack Polll

I use the low with my fender because im using humbuckers the high is too much. I never knew this until the dealer told me.Does sound better for sure

 

[jeremy]

Re: Input Jack Polll

It doesn't have anything to do with impedance. Dual guitar input jacks labelled HI and LO refer to the signal level of the instrument. Generally, one jack has a bit more attenuation on it, to knock down particularly hot input signals. Which jack is which, is anyone's guess. On Marshall single-channel JCM800s, the HI jack actually added an entire extra tube gain stage (1/2 a 12AX7).

It's just about tone, and how hard you're driving the amp, and there is no right answer. Whichever sounds better to you.

correct, its not high and low impedance. the 2nd jack usually has more attenuation. there are exceptions like the one rich mentioned

 

[crusty philtrum]

Re: Input Jack Polll

For most traditional guitar amps, it's probably better to think of the HI and LO inputs as being high sensitivity and low sensitivity. Use the high sensititvity input(s) for guitars with low output, and the low sensitivity input(s) for guitars with higher output.

(Of course you can put high-output guitars into the higher sensitivity inputs to make the amp work harder and get some more 'driven' type sounds).

 

[ehdwuld]

Re: Input Jack Polll

For most traditional guitar amps, it's probably better to think of the HI and LO inputs as being high sensitivity and low sensitivity. Use the high sensititvity input(s) for guitars with low output, and the low sensitivity input(s) for guitars with higher output.

(Of course you can put high-output guitars into the higher sensitivity inputs to make the amp work harder and get some more 'driven' type sounds).

ok the driven sounds are kinda cool to me this month

maybe not next month
I may go back to the LO input

thanks

 

[xxxplorer]

Re: Input Jack Polll

I thought the lo was for low tunings and high was for nashville tunings... I've been doing it all wrong...