'nuther question for Peavy guru.

Raymond Beale · From: Rosenberg, Texas, USA

After reading all the posts about three cable hookup to my Peavy amp. This old man finally tried it(bought my Vegas 400 new when they first came out) All I can say is THANKS PEAVY!!!!!. Wish I'd tried it years ago. Not only did my tone improve, the greatest blessing was it removed 90% of the hum and noise from lights, etc.

Now here's the question, what size pot 500k or 10k should be in my volumn pedal.

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"STRINGBUSTER"
MSA S-12 (2)both B6/E9
Ray Beale Rosenberg,Tx

Jack Stoner · From: Kansas City, MO

Use a standard 500K pot model. Do not use a Goodrich L10K as it will overload and also take some body out of the signal. I don't know how the Hilton pedal would work in the "3 cord" hookup.

jerry wallace · From: Artesia , NM (deceased)

Raymond,if your using a standard volume pedal,you need a 500k.If your using one that takes a 9V battery,such as the Goodrich H or L10K,they use a 10K pot.

Jack,you stated that a L10k will "overload" the amp? Its my understanding that the 10K pot in the Goodrich pedals,controls the gain of a Buffer/preamp IC chip,and is not directly in the Pickup/amp circuit..The IC chip being a matching device so that both the amp and the pickup can "see" their desired impedance, while the 10k pot lasts longer, and has a better taper.Am I wrong about all of this??

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Jerry Wallace-Zum: D-10,8+8, Zum: D-10,8+5, Franklin: D-10,8+9[S#002] ,Nashville 1000,Session 2000,Tubefex,ProfexII, Artesia, New Mexico

[This message was edited by jerry wallace on 13 September 2000 at 05:32 PM.]

Fred Murphy · From: Indianapolis, In. USA

I could not use the battery powered Goodrich pedal with my Emmons Legrande II and Evans amps. The hum was louder than the notes being played.

Keith Hilton · From: 248 Laurel Road Ozark, Missouri 65721

Here is my opinion. The Peavey 3 cord hookup method is a good way to hookup if you are using a 500K pot pedal, and don't mind making a extra cord run. I think you get a much better sound, with less tone change, as compaired to just going to the 500K pedal and out.
This method uses the pre-amp inside the Peavey amp. As I understand it, the Goodrich battery powered pedal has a pre-amp. Like the Peavey 3 cord hookup method,with the Goodrich pre-amp pedal, I think you get a much better sound, with less tone change as compaired to just going to a 500K pot pedal that has no pre-amp.
My pedal is quite a bit different than either of these two methods. Both the Peavey 3 chord method and the Goodrich battery powered pre-amp pedal contain "POTS".
Pots are voltage dividers--by definition! When you divide voltage you change impedance--by definition! When you change impedance tone changes--by definition! This is in every "basic electronics audio book"! My pedal has no POT. You really need to experience the sound difference then let your ears be the judge. Now about over driving the signal. Any time you pre-amp a signal, you increase it's strength. My pedal has a signal output control on the bottom of the pedal. This controls the overall output power of the pedal. This is important nowdays when guys have so many pre-amps in line. The signal strength of my pedal can be turned down, down,down even to off. It is therefore impossible for my pedal to overdrive a signal chain. Unlike my pedal, there is no way to adjust or turn down the pre-amp inside the Peavey amp or the Goodrich pedal. The gain is a set value. Usually, batter powered devices are not the cause of hum problems, unless something is wrong with the device. Any device can have hum problems, I see it all the time even in Peavey products ,and I think Peavey is quality equipment. A hum problem is generally not one product's fault, but results because of a combination of things. If you don't believe me, take a wall adapter power supply and lay it on the neck of your steel near the pickup. Now is it the fault of your guitar because it hums? Take the power supply away and it does not hum nearly as bad. I hope you get my point. Most manufacturers will try and work with a person to resolve problems.

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[This message was edited by Keith Hilton on 13 September 2000 at 10:13 PM.]

Jack Stoner · From: Kansas City, MO

I've tried the Goodrich L10K model pedal with my Nashville 400. I don't know if the amp is overloading the input to the Goodrich L10K pedal or if the output of the pedal is overloading the input to the amp. However, the signal was distorted on the (signal) peaks and the L10K pedal also took a lot of the body (tone) out of the signal.

There have been several others, in previous posts, confirm the same thing.

The Goodrich L10K pedal basically has a matchbox for the electronics so along with buffering and variable amplifier (the 10K pot controls the gain of the amplifier rather than the conventional passive 500K pot volume pedal that does nothing more than vary the attenuation of the signal) it also changes the impedence of the signal. It may be the impedence change or the active electronics is affecting the way it operates in the Nashville 400 effects loop. I haven't sat down and analyzed the Nashville 400 circuit to see what would happen with an active unit, like the L10K in the loop. I sold the L10K pedal after I found out it wouldn't work to my satisfaction in the effects loop so I don't have any way of testing using the pedal.

Bill Crook · From: Goodlettsville, TN , Spending my kid's inheritance

Jack Stoner · From: Kansas City, MO

Bill, you've read something into my post that's not there. I said the "signal was distorted", but if was being distorted by the Goodrich L10K. The signal was NOT distorted coming from the Peavey.

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