New Amp Build
Moderators: pompeiisneaks, Colossal
New Amp Build
Here is my new amp build : 100w 4xel34,6x12ax7, 3 channel, high end caps,C-core transformers and point to point wiring.
Biggest challenge was this time to make PTP wiring in small chassis(470x195x60mm).
I am still working on switching, but end result will be with headshell (Italian poplar) only 11.5 kg for full 100w head
Biggest challenge was this time to make PTP wiring in small chassis(470x195x60mm).
I am still working on switching, but end result will be with headshell (Italian poplar) only 11.5 kg for full 100w head
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Re: New Amp Build
Wow! That's full power OCD, and I salute you!
I build and repair tube amps. http://amps.monkeymatic.com
Re: New Amp Build
That is an impressive piece of work there sir. What do you think of those Jupiter caps? I have yet to try any of those, but I amp curious.
Re: New Amp Build
Nice build. Lundahl transformers are a rare sight in guitar amps.
Re: New Amp Build
Cause they're spendy AF.
Tube junkie that aspires to become a tri-state bidirectional buss driver.
Re: New Amp Build
Very nice work! I'd love to see a schematic or just a description of the topology of each of your three channels. Is one of the channels a gain stage added? I'm kinda guessing based on the controls.
Mike
Mike
Re: New Amp Build
I don't have schematic, started from zero. 1-Clean channel ,2-drive channel-First stage parallel-2-3-4-and cf, 3-channel-first parallel-2-3-4 plate driven and different tone stack
Re: New Amp Build
it is very expensive build, free flow build i like that..with all the expensive parts from HiFi collective..IMO maybe no need to go this route, i discovered that some cheap parts works better (EJ parts ) .. been there..
also i never liked exposed terminals on Lundahl , service guy can be electrocuted in a second..
interested to see the results/possible problems..
also i never liked exposed terminals on Lundahl , service guy can be electrocuted in a second..
interested to see the results/possible problems..
Re: New Amp Build
Lundahl are there only for weight savingbepone wrote: ↑Thu Dec 14, 2023 11:56 am it is very expensive build, free flow build i like that..with all the expensive parts from HiFi collective..IMO maybe no need to go this route, i discovered that some cheap parts works better (EJ parts ) .. been there..
also i never liked exposed terminals on Lundahl , service guy can be electrocuted in a second..
interested to see the results/possible problems..
Re: New Amp Build
and price increase you can use torroids it is the same weight (light) and 5* cheaper (using magnetic flux of 1.5T like here (around) to have low number of turns and smaller core
possible problem in using high saturation core like here /discovered in the past / that attack on the note is very fast, so not good for some types of music..for metal is ok
Re: New Amp Build
I will look into Toroidal, maybe try hybrid rectifier: tube and SS at the same time ?bepone wrote: ↑Thu Dec 14, 2023 12:51 pmand price increase you can use torroids it is the same weight (light) and 5* cheaper (using magnetic flux of 1.5T like here (around) to have low number of turns and smaller core
possible problem in using high saturation core like here /discovered in the past / that attack on the note is very fast, so not good for some types of music..for metal is ok
Sad si mi dao zanimaciju
Re: New Amp Build
Yeah, we have different definitions of expensive.
Tube junkie that aspires to become a tri-state bidirectional buss driver.
Re: New Amp Build
When I'm feeling fancy I spring for the 1000v Panasonics. Very nice looking build!