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Topic: Why a loop for the volue pedal? |
Terje Larson
From:
Rinkeby, Spånga, Sweden
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Posted 17 May 2005 10:14 pm |
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I see that for instance the Nashville 112 amp has a pre-EQ loop for the volume pedal. What is the point with that?
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If you can't hear the others you're too loud, if you can't hear yourself you've gone deaf |
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David L. Donald
From:
Koh Samui Island, Thailand
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Posted 17 May 2005 10:16 pm
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| It could also be for an effects unit. |
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Jack Stoner
From:
Kansas City, MO
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Posted 18 May 2005 2:14 am
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By placing a pot type volume pedal in the amp's "loop", it eliminates any signal loss and frequency loss that you could get through the volume pedal.
It does make a difference, I used that hookuip for a long time. I now have a Hilton pedal and there's no need to use the volume pedal in the amp loop. |
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Mike Brown
From:
Meridian, Mississippi USA
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Dennis Detweiler
From:
Solon, Iowa, US
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Posted 18 May 2005 3:40 pm
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Is the pedal patch loop between the preamp volume control and the tone selectors? Or is it between the preamp and power amp?
DD |
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Jack Stoner
From:
Kansas City, MO
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Posted 18 May 2005 4:30 pm
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In a Nashville 400 it is a pre-EQ loop. In the Nashville 1000 and 112 there are two effects loops, pre-eq and post eq, the pot type volume pedal would go in the pre-eq loop in these amps. The Old Session 500 called it a Volume Pedal loop but it was a pre-eq loop in it too. The pre EQ loop is a low level (instrument level) insertion point.
To answer your question it's between the input preamp and the tone controls. |
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Terje Larson
From:
Rinkeby, Spånga, Sweden
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Posted 18 May 2005 8:15 pm
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To ask a more specific question about this... Does this loop create more noise or not? Is running an amp with the volume pedal in front of it quieter?
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If you can't hear the others you're too loud, if you can't hear yourself you've gone deaf |
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Mike Brown
From:
Meridian, Mississippi USA
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Posted 19 May 2005 6:31 am
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| The main reason for the PRE EQ loop is to reduce signal loss through the pot volume pedal, but at the same time, it reduces the chance of tone changes through the volume pedal. |
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Terje Larson
From:
Rinkeby, Spånga, Sweden
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Posted 19 May 2005 10:13 am
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And the reduced signal loss leads to less noise, or?
Sorry, I'm not good with this technical stuff.
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If you can't hear the others you're too loud, if you can't hear yourself you've gone deaf |
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Jack Stoner
From:
Kansas City, MO
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Posted 19 May 2005 11:00 am
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There should be no difference in "noise", however, with a volume control in the pre-EQ effects loop it will tend to lower or lessen the effect of any noise that is on the input.
If you run effects between the guitar and the amp input, whatever noise they add or produce will be heard, but with the volume pedal in the effects loop when the volume pedal is off you will not hear any of it. Also, as the volume pedal will normally not be used at full volume, this will also tend to decrease any noise (and the signal) that is between the input preamp circuitry and the EQ circuitry. |
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Bill McCloskey
From:
Nanuet, NY
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Posted 19 May 2005 1:12 pm
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| Maybe it is just the way I have things set up but was noticing some hum when I was running the volume pedal directly into the high gain. Once I switched into the pre-eq loop, the hum went away. |
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