question about peavey 1000 amp

Joseph Barcus · From: Volga West Virginia

Hello i was readind somewhere in here that the pre effects on the 1000 can be used for running the volume pedal in, could someone please defind that a little bit more in detail. thanks for your help in advance Joe

HWHYoYo · From: West Sunbury, PA

Use the pre EQ patch for the volume pedal loop. (2 cables)...run another cable from your steel into the amp input.

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Wayne Hetzler
98 Carter SD10
00 Carter SD10
Evans FET500
Nashville 1000

Joseph Barcus · From: Volga West Virginia

Thank you wayne for clearing that up for me I am going to give that a shot. so I guess my next question in this would be what kind of difference does it make compared to the other way. Im sure theres a good reason behind it, thanks Joe

Ron Randall · From: Dallas, Texas, USA

Joseph,
Short answer is, it sounds better.

Longer answer: The signal coming from any guitar pickup is very weak. It is best to get the guitar signal to a preamp as quickly as possible using as short a guitar cable as possible. Once amplified a little bit, then send the signal through your effects that you want before the signal goes thru the EQ. Usually the volume pedal and/or reverb.

Use the post EQ patch for other effects like delay, flangers, chorus, etc.

Hope this helps.

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Fender Stringmaster T-8
Fender Custom D-8
8 string Benoit
Peavey Amps

Joseph Barcus · From: Volga West Virginia

Well As columbo would say I think thats all i need for now, then when I sign off I'll think of something else lol, anyways Im going to give it a shot thanks alot.

Mike Brown · From: Meridian, Mississippi USA

Here is a copy of my article concerning the "pre eq pedal loop" that is found on most Peavey steel guitar amps; THE PRE EQ PATCH
“WHY IS IT CALLED A VOLUME PEDAL PATCH?”
By Mike Brown

Since Peavey Electronics first introduced the Session500 steel guitar and fiddle amplifier back in 1980, we have been the only company to offer an interesting solution to the problems that are encountered when using potentiometer based pedals for controlling the volume of the amp. Although our “volume pedal” or “pre eq patch” point has been a standard feature on every steel amp since the Session500, players may not be aware of this unique method of “inserting” their volume pedal into the circuit on the various models that have been introduced since that time. On the Session500, this insert point was labeled “PEDAL-IN & OUT”. On the Vegas 400 and the Nashville 400, it was labeled “PRE EQ PATCH-IN & OUT”. On the Session400 Limited, this insert point is labeled “PRE EQ PATCH-SEND & RETURN”. On our latest models, the Session2000 and Nashville1000, this insert point is labeled “PRE EQ PATCH-SEND & RETURN”. Although they are all labeled with different names, the purpose and results are the same.

A typical volume pedal patch is made between the guitar and the amplifier input. However, doing so could cause the tone of the guitar to change as the pedal is moved up and down with changing volume requirements, because this patch introduces a varying resistance as seen by the guitar pickups. The Peavey pedal patch allows the user to insert a volume pedal into the active pre-amp circuit, thus increasing the performance of the volume pedal. Because the volume pedal is patched in after the first pre-amp stage, no signal degradation occurs regardless of the pedal volume setting. The volume pedal changes only the volume without affecting the tone or character of the guitar voice.

This is how the circuit works. When an instrument signal is routed through either the high gain or low gain inputs (10db gain difference between the two types), it is routed through a first order high-pass filter that blocks DC into and out of the first operational amplifier (IC chip) for protection. A 20 hertz low pass filter is in place to provide better signal to noise ratio of the circuit. In this first stage of the circuit, we have designed in various electronic component circuits to reduce noise so that it won’t be amplified through the remaining signal path. When the audio signal hits the pre gain control potentiometer, the level of the signal that is to be routed through the remainder of the circuit is dependent upon the setting of this control. At this point in the circuit, the signal is routed out of the OUT jack via shielded cable, through the volume pedal and back into the circuit through the IN jack using a second shielded cable. NOTE; When the volume pot is in the fully up position (no sound), the wiper of the pot is sent to ground. When the volume pot is in the fully down position (sound), the signal is then audible through the circuit). The pedal volume pot acts in the same fashion as the PRE GAIN control on the amplifier. The IN jack is of the “normaling” type, which remains closed until a ¼” plug is inserted for the returned signal. At this point in the circuit, additional noise filtering is applied and a 1.56Mhz. low pass noise filter is employed to shield radio frequencies from entering the circuit. In addition, a high pass filter blocks frequencies below 10 hertz.

At this point in the circuit, a second first order high-pass filter blocks DC current into the second gain stage before signal is routed through the remainder of the preamplifier.

This “pedal patch” is exclusive to Peavey steel guitar amplifiers and it works! If you have any questions, please contact me toll free in the U.S. at 1-877-732-8391 or by e-mail at mikebrown@peavey.com

There are advantages to using the "pedal patch" method and they are;

1-full output from pickup without any possible degradation from routing the guitar signal through the volume pedal pot.

2-no need for signal boosting type of clamp on boxes as the signal is unaltered from the pickup.

3-the amp equalization controls are unaffected on the amp by the changing resistance of the pedal potentiometer.

Mike Brown
Peavey Electronics Corporation

Joseph Barcus · From: Volga West Virginia

Mike,
Thank you very much for that imformation, I didnt realize the older amps had that option as well. I will give that a shot this week end and im sure it will be great.
its nice to have someone from the factory that will share this stuff, I will say thats the reason that Peavey is number one in the amps and equipment. Joe

Mike Brown · From: Meridian, Mississippi USA

You are welcome.

Bennie Hensley · From: Yakima, Washington, USA

Since I have a Hilton pedal, does this mean to run run a cord from each of the "out" plug in's on the pedal to the pre-eq patch on the amp and one from the "instrument" input plug on the pedal to the input on the amp?? Thanks, Bennie
Cougar 1095 NV 1000

Mark van Allen · From: Watkinsville, Ga. USA

Hey, Bennie, the Hilton is set up just like any other pedal with parallel outputs- the two out jacks carry the same signal, so you would set it up just as Mike indicated for any other pedal, straight out from your guitar to the amp input, then out to your pedal from the pre-amp out jack and back from either of the pedal output jacks to the pre-amp in jack. I'm not sure you'll get or need the advantages of this setup since the Hilton isn't a pot pedal and passes the guitar signal with no degradation. Try it and see- I'm guessing it'll sound just as good to run the Hilton normally, guitar to volume pedal to amp input. Good luck!

Bennie Hensley · From: Yakima, Washington, USA

Mark, thanks a lot for the information. Being new at this I am just trying to see what sounds I can get. Strickly guess work on my part. I use nothing more than the amp at this time but an interested in exploring different effects for sound.
Thanks again....Bennie

Kenneth Kotsay · From: Davie/Ft Lauderdale, Florida

How do I hook my BOSS DD-3 or any other effects unit.

What about when you have a Profex II and DPC 1400?

KEN

Mike Brown · From: Meridian, Mississippi USA

All effects devices such as a DDL-3 should be placed in the "POST EQ" loop as it is preferred that the equalization of the amp effect the coloring of the effect being used.

Obviously, there is no "pre eq patch" on a processor like the Profex II, so the above "pedal patch" does not apply. The only option is to connect your pedal between the output of the guitar and the input of the Profex II.

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