Another Restoration Story (New): 1975 Peavey Session 400

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Don Mogle
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Location: Round Rock, TX, USA
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Another Restoration Story (New): 1975 Peavey Session 400

Post by Don Mogle »

Hi Everyone,

My restoration series continues with a 1975 Peavey Session 400. This is my fourth restoration story and I hope you've enjoyed taking this journey with me.

This amp sat idle for many years in a clean, dry garage after its former owner abandoned it and left in the care of a friend. I found it on Craigslist here in the Austin area.

HISTORY: This amp was owned by a guy named Gregg Cheser who started playing music when he was in high school in San Antonio. He was in a band called the Swiss Movement. He used the amp in the 70s-80s with various bands around the area. His last gigs took him to Fredericksburg area as the band leader of the Pronto Brothers. He passed away in 2004.

As you can see, the amp was pretty dirty. However, it was not bad once all the dirt was cleaned off. It had good bones and it was all there for the restoration. Here are some before-and-after pictures:


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Here is the work in progress. I always like to see a nice clean chassis for these restorations. This one was nice and clean. I couldn't deal with the red knobs, so I pulled all the original ones I had in my inventory and installed these. I cleaned (flushed) the pots with 99% anhydrous alcohol and followed this up with a drop of sewing machine oil for lubrication. Thanks to Brad Sarno for this tip (obtained from a tech that maintained high-end sound boards for studios). Reference a past Forum post on this subject.


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Here is the final result of the restoration! I went ahead and installed a Peavey 1501-4 BW Spider Web speaker that got the most votes in a recent poll. Thanks to all who gave input...I really appreciate it.

I had a chance to play it a little while today and it sounds fabulous with the 1501-4 BW. I was also struck by the fact it is really clean sounding for an amp of this vintage--no annoying hiss and other extraneous noises!!


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And here is my next restoration project: 1982 Peavey Session 500


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Last edited by Don Mogle on 19 Jan 2022 1:33 pm, edited 5 times in total.
Jeffrey Maxwell
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Post by Jeffrey Maxwell »

Nice looking restoration. Good job. I am really glad you got rid of the red knobs. Now it looks like a Peavey Amp again.
Steve Hinson
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Post by Steve Hinson »

WOW on that Session 400!

Well done,Sir!

SH
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Jack Hanson
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Post by Jack Hanson »

Ooh-la-la! Great amp and an excellent resurrection.

One question: Where did you obtain the black knob inserts (or did you merely replace the original knobs with good'uns)?

I love my old Session head and my LTD combo. Wonderful old amps, and a relative bargain nowadays. Especially compared to $1000+ replica Twin Reverbs and the like.
Don Mogle
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Joined: 10 Aug 2000 12:01 am
Location: Round Rock, TX, USA
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Country: United States

Post by Don Mogle »

Thanks guys! I had black knobs in inventory and just swapped them out. Red is not my color!