Search found 132 matches

by Mr. Lime
Thu Sep 17, 2026 5:53 am
Forum: Trainwreck Files
Topic: Komet 60 files?
Replies: 1
Views: 154977

Re: Komet 60 files?

Use the search function, it would take you 30 seconds to find all you need..
by Mr. Lime
Tue Sep 15, 2026 5:20 am
Forum: Trainwreck Discussion
Topic: Support for Concorde Project
Replies: 4
Views: 7802

Re: Support for Concorde Project

Guess since the tax wars some companies aren't willing to deal with european customers anymore. For the Chassis I would simply take a pre drilled JTM45 housing - it's close enough to the Komet - that's at least what I did. InMadOut does custom orders as well. You might find some other guys for a sma...
by Mr. Lime
Fri Sep 11, 2026 8:36 am
Forum: Trainwreck Discussion
Topic: Komet's Concorde
Replies: 76
Views: 54403

Re: Komet's Concorde

Thanks for the response!

Yeah that would make sense, I just didn't expected a cap to have enough space under the board.
by Mr. Lime
Wed Sep 09, 2026 9:13 pm
Forum: Trainwreck Discussion
Topic: Komet's Concorde
Replies: 76
Views: 54403

Re: Komet's Concorde

Loving the tones that come out of those Komet K60 and K50s for years, I'm curious about the big 220u reservoir cap that can be seen on this K50 gutshot. With solid stage rectifier, 100u pretty much is the highest standard values I usually see in amps. My LLM tells me it's not safe for the PT having ...
by Mr. Lime
Wed Sep 09, 2026 9:04 pm
Forum: Trainwreck Discussion
Topic: Transformers for Komet Style Amp? JTM45 set useful? Technical differences?
Replies: 3
Views: 4916

Re: Transformers for Komet Style Amp? JTM45 set useful? Technical differences?

Thanks for your replies! Well in the meantime I got myself a Ceriatone Expression second hand and experimented a litte. I replaced the parts to basically have a K60 but with the 6K6 OT and 300-0-300 PT. The cool thing about the Ceriatoe OT is that it can be wired for 5k as well which would be betwee...
by Mr. Lime
Wed Aug 12, 2026 6:47 am
Forum: Trainwreck Discussion
Topic: Transformers for Komet Style Amp? JTM45 set useful? Technical differences?
Replies: 3
Views: 4916

Transformers for Komet Style Amp? JTM45 set useful? Technical differences?

Thinking about building (or getting preassembled) a Komet K60 I tried to contact Heyboer for the Transformers. As they didn't responded I was looking for some alternative sources and would appreciate your opinions and experiences. The specs of the Heyboer as far as I found are: power: hts-8593 rh365...
by Mr. Lime
Wed Aug 12, 2026 5:26 am
Forum: Trainwreck Discussion
Topic: What to do with left over Triode in Express circuit?
Replies: 5
Views: 14444

Re: What to do with left over Triode in Express circuit?

Have a look at the Komet Concorde circuit, it uses the unused stage as a cathode follower after the cold clipper. Like written, I tried that and wasn't too impressed. In the sloclone forum we developed an idea with parallel 3rd stages to target odd and even order harmonics by split Ra and Rk for wa...
by Mr. Lime
Sat Jul 18, 2026 7:28 am
Forum: Technical Discussion
Topic: NFB and presence control on a standalone preamp?
Replies: 11
Views: 5036

Re: NFB and presence control on a standalone preamp?

The Bogner Fish preamp takes use of a local negative feedback around the dc coupled cathode follower. On one extreme setting, the presence control takes out the 22n cap that and basically feeds back the signal in full range through 2Meg feedback-R. On the other extreme highs and mids are dimmed so o...
by Mr. Lime
Fri Jul 03, 2026 11:18 am
Forum: Trainwreck Discussion
Topic: What to do with left over Triode in Express circuit?
Replies: 5
Views: 14444

What to do with left over Triode in Express circuit?

Currently I'm thinking about getting an Express kit since my last build is a view years ago. I wanted to ask you guys, what you have done with that left over triode as I hate unused triodes in my amps. In my last Trainwreck kind of amp, I tried a parallel input stage and a dc coupled cathode followe...
by Mr. Lime
Fri Apr 21, 2023 1:17 pm
Forum: Technical Discussion
Topic: Clean preamp circuit with bright input stage?
Replies: 6
Views: 1809

Re: Clean preamp circuit with bright input stage?

The Vox Top Boost circuit has a fully bypassed cathode resistor on the input stage.
I would need a clean channel with a 470n bypass cap instead of 22u.
by Mr. Lime
Wed Apr 19, 2023 4:30 pm
Forum: Technical Discussion
Topic: Clean preamp circuit with bright input stage?
Replies: 6
Views: 1809

Re: Clean preamp circuit with bright input stage?

Thanks for the suggestion. The Hiwatt could be a an interestig circuit. GT Soul-O clean channel is another candidate but has the tone stack after the first stage and I can imagine it would be too bright for me. I have seen simulations of the Hiwatt EQ but never used it before. I usually tend to pref...
by Mr. Lime
Mon Apr 17, 2023 2:03 pm
Forum: Technical Discussion
Topic: Clean preamp circuit with bright input stage?
Replies: 6
Views: 1809

Clean preamp circuit with bright input stage?

Hi guys, I'm currently planning to replace the circuit of my 3 channel 19" preamp with a new circuit. The Crunch and Lead channels are already defined and share a 150k / 1k5, 470n input stage together with the clean channel. I wanted to ask you guys if someone has good experience with a 2 stage clea...
by Mr. Lime
Sun May 09, 2021 9:43 am
Forum: Technical Discussion
Topic: Bridged T Mid Control
Replies: 4
Views: 3780

Re: Bridged T Mid Control

Lately I was playing with the Tone Stack Calculator to see how I can take use of a bridged T mid control in a simple James stack. I came up with this arrangement which is basically a sum up of the controls of the first post's schematic. As already mentioned before, it's quite lossy so I highly recom...
by Mr. Lime
Tue Mar 02, 2021 11:54 pm
Forum: Technical Discussion
Topic: Bridged T Mid Control
Replies: 4
Views: 3780

Re: Bridged T Mid Control

The control would have a deep mid cut while the dual pot shifts the notch from left to right. Theoretically cool but very lossy in practice I would guess. Probably more useful in clean amps as in high gainers.
by Mr. Lime
Wed Jan 13, 2021 5:25 pm
Forum: Technical Discussion
Topic: Mixing Channels with Virtual Earth?
Replies: 6
Views: 1826

Re: Mixing Channels with Virtual Earth?

I once tried an anode mixer and it didn't worked for me. I married a two stage with a four stage channel in front of a shared tone stack but I had squealing problems.
Anyway, an anode mixer isn't an option here and not of my interest.