peter,
ive always wanted to try a gainclone, whats the parts cost on something like that? considering you can get a transformer surplus or something...? (not the case, JUST the parts).
ive always wanted to try a gainclone, whats the parts cost on something like that? considering you can get a transformer surplus or something...? (not the case, JUST the parts).
Member
Joined 2002
Yeah. they look verry simple to build and reading all peter's post's he sounds verry impressed over some thing so small and easy.
Parts cost per channel:
IC $7
2 resistors
one coupling cap 4,7u
2 x 1000u/50 PS caps
one potentiometer
Power transformer $60-80 (for new)
8 discreet dides
Plus hardware and casing. You can use cheap parts and your cost may be less than $50, but then, don't expect the greatest sound.
With so few parts it makes sense to use best parts for the job. So I'm using Black Gates which set me almost $100 and Rikken resistors (which seem to be a good sonic match to the rest of the circuit). I'm using oversized 400VA transformer and good rectifiers. But I suspect that the key to the great sound is proper chassiss.😉
IC $7
2 resistors
one coupling cap 4,7u
2 x 1000u/50 PS caps
one potentiometer
Power transformer $60-80 (for new)
8 discreet dides
Plus hardware and casing. You can use cheap parts and your cost may be less than $50, but then, don't expect the greatest sound.
With so few parts it makes sense to use best parts for the job. So I'm using Black Gates which set me almost $100 and Rikken resistors (which seem to be a good sonic match to the rest of the circuit). I'm using oversized 400VA transformer and good rectifiers. But I suspect that the key to the great sound is proper chassiss.😉
here is my near-complete battery powered cd power supply. (dress rehearsal for the pre-amp power supply)
the VU meter isnt hooked up, but it will monitor voltage for the batteries, making sure it never dips too low. wall-wart transformer feeds into a dpst switch that basically steers the power either to the relay bank, or to the charger. in the "off position", power goes to the charger, thus charging batteries, hooked up in parallel. this charges them all at 12v. when the switch is "on", the transformer powers the relays, thus making the batteries a series, at 36v, which is the voltage the cd player needs, thus playing the cd player.
for me this is a big accomplishment. it works well, you flip the switch, relays switch over, and you go from 36V down to 12V, and charging starts. as soon as its all finished, it kicks off, and maintains the charge. once switched on, charger goes off and the cd player is fed with 36V and starts right up.
the VU meter isnt hooked up, but it will monitor voltage for the batteries, making sure it never dips too low. wall-wart transformer feeds into a dpst switch that basically steers the power either to the relay bank, or to the charger. in the "off position", power goes to the charger, thus charging batteries, hooked up in parallel. this charges them all at 12v. when the switch is "on", the transformer powers the relays, thus making the batteries a series, at 36v, which is the voltage the cd player needs, thus playing the cd player.
for me this is a big accomplishment. it works well, you flip the switch, relays switch over, and you go from 36V down to 12V, and charging starts. as soon as its all finished, it kicks off, and maintains the charge. once switched on, charger goes off and the cd player is fed with 36V and starts right up.
Attachments
All recycled parts except for 4 resistors...
The arbutus end caps are still a work in progress....
dave
An externally hosted image should be here but it was not working when we last tested it.
The arbutus end caps are still a work in progress....
dave
planet10 said:
Yes, but what is it? Does it sound better than it looks? And yes, you can be sent to hell for covering up the glow.
Sch3mat1c said:
don't like the tube collers, eh? Damps the tube, keeps them cooler, so they last longer, and i like the looks...
This amp's cosmetics are intended to be a bit of a satire ...
dave
EC8010 said:
The full story on my 5-Buck Amp (named by Allen Wright). This amp is sentimental because it represents my 1st tube amp -- twice -- it is based on the amp that came in the fold-down record player my parents bought when i was just getting into my teens and is the 1st tube amp i built on my own -- Allen helped me & i was going thru my 1st read of Jone's book.
It is a single 50EH5 with about 1.4 w running in pentode. It sounds OK -- somewhat limited on the extremes as you would expect from the massive OPTs.
dave
Headphone amp - outside
Headphone amp - inside
ok,
erix
An externally hosted image should be here but it was not working when we last tested it.
Headphone amp - inside
An externally hosted image should be here but it was not working when we last tested it.
ok,
erix
- Status
- Not open for further replies.