Peavey Donor amp build

dcribbs1412 · Post by **dcribbs1412** » Fri Nov 18, 2011 4:31 pm

Got a Peavey Heritage 212 combo with scorpion speakers
4 -6L6 power with SS pre...speakers are decent shape.Good size chassis.
Amp just hums...I feel the need to tear out the boards and
try a BluesMaster style build. Just wondering if the PT can support
3-4 ax7's. I see 8A fuse on the 6.3V on the schem...not sure if that indicates
amperage.Also see 525V. Can I just treat the PT and OT as a Twin style? Any info or comments are greatly appreciated.

Darin

heisthl · Post by **heisthl** » Sun Nov 20, 2011 8:58 pm

If your time is worth more than $1 an hour you will spend more money converting this amp to a "D" style than you would if you built one from scratch.

dcribbs1412 · Post by **dcribbs1412** » Mon Nov 21, 2011 12:59 am

Thanks heisthl...
guess I was hoping to pull a rabbit out of this iron

Darin

Bob-I · Post by **Bob-I** » Mon Nov 21, 2011 2:47 am

I've built 3 Dumble clones from these great old amps. Huge chassis, excellent iron, solid cabinet. My main gigging amp is built from the 60 watt version of this amp, it kills.

I'd go for it. Use the Peavey power supply schem as a starting point, make adjustments on the dropping string to get the voltages in line for the preamp.

dcribbs1412 · Post by **dcribbs1412** » Mon Nov 21, 2011 4:22 am

Thanks Bob-I
seems a shame to let the big iron go to waste...and I have most of the parts...I might just have a project.

Darin

heisthl · Post by **heisthl** » Mon Nov 21, 2011 5:58 am

Bob-I wrote:I've built 3 Dumble clones from these great old amps. Huge chassis, excellent iron, solid cabinet. My main gigging amp is built from the 60 watt version of this amp, it kills.

I'd go for it. Use the Peavey power supply schem as a starting point, make adjustments on the dropping string to get the voltages in line for the preamp.

really? according to the schematic/layout for his particular amp there is no filtering for preamp tubes not to mention no preamp tube sockets, no usable pots, an output tube PCB that should go (and some drilling needed to install chassis mount 8 pin sockets) and once you remove the big PCB with a the pots and stuff you're left with a piece of chassis that is less than ideal to punch 9 pin preamp tube holes and drill out all the faceplate holes for full size pots, cover all the front panel holes you won't be using etc etc Not worth the time unless you work for under $1 an hour.

erwin_ve · Post by **erwin_ve** » Mon Nov 21, 2011 9:07 am

heisthl wrote:
Bob-I wrote:I've built 3 Dumble clones from these great old amps. Huge chassis, excellent iron, solid cabinet. My main gigging amp is built from the 60 watt version of this amp, it kills.

I'd go for it. Use the Peavey power supply schem as a starting point, make adjustments on the dropping string to get the voltages in line for the preamp.
really? according to the schematic/layout for his particular amp there is no filtering for preamp tubes not to mention no preamp tube sockets, no usable pots, an output tube PCB that should go (and some drilling needed to install chassis mount 8 pin sockets) and once you remove the big PCB with a the pots and stuff you're left with a piece of chassis that is less than ideal to punch 9 pin preamp tube holes and drill out all the faceplate holes for full size pots, cover all the front panel holes you won't be using etc etc Not worth the time unless you work for under $1 an hour.

Henry; kits are easier, but; I did the same conversion on the Peavey Classic VTX. First thing is to make a good plan/drawing and what has to be done with the filtering. Iron is good stuff and working with that much space is awesome. The drilling in steel is doable and hole punchers for the pre-amp tubes make it easy.
I made my amp with a built in dlator and didn't have to fill holes in the front panel.
Maybe it's not a commercial project, as you suggest, but it is lots of fun and I'm proud, pleased with the results. It's a killer sounding amp and use it often.

Here's my project: https://tubeamparchive.com/viewtopic.ph ... highlight=

heisthl · Post by **heisthl** » Mon Nov 21, 2011 10:17 am

Heritage has more holes than your classic. Just sayin'

talbany · Post by **talbany** » Mon Nov 21, 2011 12:57 pm

The big problem with these conversions is you sometimes have to use those chassis if you want to use the cabinets they came with..Unless you can find something else that will work but usually those are blanks and have to drill them out anyway..Pretty much all you get from this amp is the chassis transformers and cabinet.. If you enjoy doing these types of builds and willing to spend the time laying the complete amp out before hand they can turn out pretty cool..Here is a Peavey conversion we did years back..Robbie Flint (Alan Jackson) uses it now and 183 loaded Peavey Iron

BTW..Never built one on a Heritage chassis..

Tony

erwin_ve · Post by **erwin_ve** » Mon Nov 21, 2011 1:34 pm

heisthl wrote:Heritage has more holes than your classic. Just sayin'

More holes=more possibilities

dcribbs1412 · Post by **dcribbs1412** » Mon Nov 21, 2011 2:45 pm

Thanks guys
erwin_ve,
appreciate your link to your build...I will be referencing it as I go.

Tony wrote

The big problem with these conversions is you sometimes have to use those chassis if you want to use the cabinets they came with

Good point...this cab is very solid and speakers seem decent to start with
Robbie Flint build looks really nice...love your wood plate and assume
new tolex.

More holes=more possibilities

hoping to get on board loop and reverb...
I hope to figure out the power supply and start soon...worried about the 6.3V capacity...

Darin

Bob-I · Post by **Bob-I** » Tue Nov 22, 2011 2:30 am

heisthl wrote:
Bob-I wrote: really? according to the schematic/layout for his particular amp there is no filtering for preamp tubes not to mention no preamp tube sockets, no usable pots, an output tube PCB that should go (and some drilling needed to install chassis mount 8 pin sockets) and once you remove the big PCB with a the pots and stuff you're left with a piece of chassis that is less than ideal to punch 9 pin preamp tube holes and drill out all the faceplate holes for full size pots, cover all the front panel holes you won't be using etc etc Not worth the time unless you work for under $1 an hour.
Yes, really. My labor is free to me, I'm not in business, I just wanted a nice amp. Drilling holes is no big deal, front panel was simple. The 8 pins were already mounted.

From the peavey I got a decent cab, chassis, iron, and the satisfaction that I gig with my own creation.

passfan · Post by **passfan** » Tue Nov 22, 2011 12:31 pm

dcribbs1412 wrote: Just wondering if the PT can support
3-4 ax7's. I see 8A fuse on the 6.3V on the schem...not sure if that indicates
amperage.

Darin

I can't resist...is this a serious question?

Structo · Post by **Structo** » Tue Nov 22, 2011 1:53 pm

I think he is asking if the 6.3vac winding can supply up to 8 amps.

dcribbs1412 · Post by **dcribbs1412** » Tue Nov 22, 2011 5:10 pm

Yes, really. My labor is free to me, I'm not in business, I just wanted a nice amp. Drilling holes is no big deal, front panel was simple. The 8 pins were already mounted.

From the peavey I got a decent cab, chassis, iron, and the satisfaction that I gig with my own creation.

Agreed...I'm hoping to bring out a decent amp that was probably headed to the dump soon.

passfan wrote:
dcribbs1412 wrote: Just wondering if the PT can support
3-4 ax7's. I see 8A fuse on the 6.3V on the schem...not sure if that indicates
amperage.

Darin
I can't resist...is this a serious question?

Sorry...it just seemed kinda high for a amp running just 4-6L6's and no preamp tubes.I just wanted to check before I started drilling holes.
At close to 8A I guess I could run 4 EL34's and 4 12ax7's...but I'm going to try and do 4 6L6's with 4 ax7's...

Darin

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