Ok, I need some help looking over this Traynor TS-10. It was an impulse buy. Not an ideal specimen, but it's been years since I've seen one pop up so I just went for it.

Here's what the seller said.

It has been serviced in the past, as the power transformer has been replaced and the power cord is non-original. The speaker is also a replacement. It is a bit underpowered (5w continuous) for the amplifier, but works great at practice volume.

There is an external speaker jack installed in the bottom of the chassis if you want to run it to another cabinet.

The amp fires up and all the controls seem to work properly though the speaker is very bright and farts right out at just about any volume and does not look like it was intended for a guitar amp. It's marked 4.9 ohms. I popped it open and it's got a little Peavey transformer in there. I'm happy to replace the speaker, but I kinda want to know if the transformer situation needs to be changed and what ohms it should be.

Edit: I think the pics work now.

VaticanShotglass wrote: Sun Jun 15, 2025 8:08 pm but I kinda want to know if the transformer situation needs to be changed and what ohms it should be.

Won't know unless you measure the rail voltages and see if they're within spec of what the original transformer would have produced.

The speaker is going to have the biggest impact on sound, and what you've got in there now is probably a cheap stereo speaker, which is why it sounds shrill. Definitely get a guitar speaker in there.

VaticanShotglass wrote: Sun Jun 15, 2025 8:08 pm I kinda want to know if the transformer situation needs to be changed and what ohms it should be.

To elaborate on what Nate said, this is a solid state amp and the transformer is a power transformer to convert wall voltage to what the amp wants to see. It is not an impedance (ohms) matching transformer like a tube amp would have.

This delay pedal’s hardwire ac plug’s ground is missing - would that prevent it from passing any signal at all? No sound dry or wet and turning knobs and pressing the switch doesn’t make any noise.

llllllllllllllllllll wrote: Mon Jun 16, 2025 9:11 pm This delay pedal’s hardwire ac plug’s ground is missing - would that prevent it from passing any signal at all? No sound dry or wet and turning knobs and pressing the switch doesn’t make any noise.

Oh well it sold as a ‘project.’ Bye big guy!

llllllllllllllllllll wrote: Mon Jun 16, 2025 9:11 pm This delay pedal’s hardwire ac plug’s ground is missing - would that prevent it from passing any signal at all? No sound dry or wet and turning knobs and pressing the switch doesn’t make any noise.

Nope, the third prong is a safety ground. It shouldn't carry current and won't have any impact on operation. You've got something else going on.

Dr Tony Balls wrote: To elaborate on what Nate said, this is a solid state amp and the transformer is a power transformer to convert wall voltage to what the amp wants to see. It is not an impedance (ohms) matching transformer like a tube amp would have.

Gotcha. I only know a little about amps, but I've read next to nothing about solid state amps. This thing looks like it has a pretty simple circuit, but I'll have to brush up on this stuff.

Here's one schematic I found with a quick search. Will search more to see if there are discrepancies. Then I'll need to get out to the shed this weekend, pull the chassis, and study it.

Nate Dort wrote: The speaker is going to have the biggest impact on sound, and what you've got in there now is probably a cheap stereo speaker, which is why it sounds shrill. Definitely get a guitar speaker in there.

Yeah, this thing is obviously a turd. Was planning to get something more appropriate but I want to make sure I get something that will match what the amp wants to see.

Nate Dort wrote: Mon Jun 16, 2025 7:22 am Won't know unless you measure the rail voltages and see if they're within spec of what the original transformer would have produced.

Hmm. Gonna have to find the best spot to do that on this one. First I need to figure out what the original specs were. I'm not even sure what ohms the original speaker was. Is that obvious from the schematic? I kinda feel like a moron.

Someone over at Tapeop was talking about Pignose amps in the studio and it lead me to this vexing question (the STD is just a box for long instrument cable runs)

Wait, wait, wait. This could be genius. So if you were to go:
Guitar-> ABY -> 1 to STD/big amp in live room, 2 to tiny cranked amp in control room?

I'm surprised I don't know this, but if your Pignose or battery powered Marshall is feeding back in the control room does that mean the proper rig in the live room is also feeding back?

losthighway wrote: Sun Jun 22, 2025 1:46 pm Someone over at Tapeop was talking about Pignose amps in the studio and it lead me to this vexing question (the STD is just a box for long instrument cable runs)

Wait, wait, wait. This could be genius. So if you were to go:
Guitar-> ABY -> 1 to STD/big amp in live room, 2 to tiny cranked amp in control room?

I'm surprised I don't know this, but if your Pignose or battery powered Marshall is feeding back in the control room does that mean the proper rig in the live room is also feeding back?

It's the pickups+string combo that is feeding back, so yes, it would be coming out of the guitar's output jack and feeding both amps.

Nate Dort wrote: Sun Jun 22, 2025 2:20 pm

losthighway wrote: Sun Jun 22, 2025 1:46 pm Someone over at Tapeop was talking about Pignose amps in the studio and it lead me to this vexing question (the STD is just a box for long instrument cable runs)

Wait, wait, wait. This could be genius. So if you were to go:
Guitar-> ABY -> 1 to STD/big amp in live room, 2 to tiny cranked amp in control room?

I'm surprised I don't know this, but if your Pignose or battery powered Marshall is feeding back in the control room does that mean the proper rig in the live room is also feeding back?

It's the pickups+string combo that is feeding back, so yes, it would be coming out of the guitar's output jack and feeding both amps.

This could spell wonderous potential for feedback tracking.