Liverpool gut shot?

[Tdale]

Is there a photo of the inside of a Liverpool anywhere?

Tommy

[UR12]

Here is 2

[kryfcn]

Hi.Ive built half watt version. It sounds ok. By the way huge thanks for all of the information.
Whats the purpose of the diodes on the power tubes to ground? This Ive never seen on famous layouts and shemes.

[pdf64]

See ‘output spike protection’, late on in The Trainwreck Pages.
When I tried it, I put their 0V returns via a dpst switch, so I could easily and repeatedly check for any tonal artefacts / effects. Even with my poor ears, an instant A-B comparison showed that with them switched in, the overdriven tone was smoother, lost a bit of bite.
That wasn’t my preference so out they went.

[kryfcn]

Thanks a lot, im going to look closer on this subject.

[amptone]

Some guts.

[rooster]

Is this a new TW built by the family? And what is that can opener cut at the rear of the chassis?

[Colossal]

Yes, that appears to be a JM wired amp. I believe what looks like a cut is a weld on chassis.

[Littlewyan]

Interesting there's no bright switch on the new ones. I assumed a bright cap was hard wired, but I can't see one there.

[Colossal]

Interesting there's no bright switch on the new ones. I assumed a bright cap was hard wired, but I can't see one there.

There is a video by Matt O'Ree where he explains that Ken did not prefer the sound of the bright cap, but added them at his customer's behest. So it is my understanding that the JM reissues omit the bright cap.

[wpaulvogel]

The irregularities in the chassis at the top right of the picture appears to be the stamped name/identification writing.

[Littlewyan]

Interesting there's no bright switch on the new ones. I assumed a bright cap was hard wired, but I can't see one there.

There is a video by Matt O'Ree where he explains that Ken did not prefer the sound of the bright cap, but added them at his customer's behest. So it is my understanding that the JM reissues omit the bright cap.

Ah yeah I saw that. Did he not also say there was a mod that Ken was experimenting with?

[Colossal]

The irregularities in the chassis at the top right of the picture appears to be the stamped name/identification writing.

Ah yes, good call Paul! I need glasses for close work too now

Wyan, I took the commentary to mean that Ken would put the bright cap in the amp if the customer requested it (and probably as new customers found out about it from existing customers), but his preference was that he liked the amp without the bright cap. I found that interesting.

[RockinRocket]

I don't recall seeing a liverpool/express with out a bright switch on the front panel.

I may have read JM wasn't using bright switches to help keep the amps stable.

[Tweeder]

Thought I would take a chance on reviving an old thread in case anyone is still active in the trainwreck discussion.

Does anyone have a gut shot or layout for an early liverpool design using a valve rectifier?

Seems like all photos and layouts I have found on this forum, and the interwebs in general, show the diode arrangement.

I want the sag and compression of the tube, not the tight fast response of the solidstate design. Even the Rocket layouts all show diodes...

I could work from the schematics, but was hoping to see an actual layout. (as a novice I have still have trouble transposing schematics to layout)

I have built a couple of 5E3 circuits - one in a lovely Black Walnut / Flame Maple head cabinet I made...
I gifted one chassis to a friend and the keeper is going into a country western head cab to match a speaker enclosure I made.
I am going to repurpose the Walnut cabinet and what better amp to put in there than a TW?

Also considering a switchable rectification circuit and put both the valve and diodes in there with a selector switch to go from soft to tight...