yes i found out the iron i wanted to use didnt fit
the power supply is from u guest it a tape backup lol
it power's the filament
the b+ i have it running at 170v
now to finish it off starting with the back
thats it this is what u can do with a switch box
i got the grounding right because there is no hum even when
the box is closed
so yes it sound's great
the power supply is from u guest it a tape backup lol
it power's the filament
the b+ i have it running at 170v
now to finish it off starting with the back
thats it this is what u can do with a switch box
i got the grounding right because there is no hum even when
the box is closed
so yes it sound's great
Attachments
i know some people go crazy with DAC's around here (and i wouldnt mind building one), but i wanted to just test what i've got as is. the enclosure has a 12v supply, so power's covered. the cdrom has audio out (4 pins for L\R\Gnd) and digital out (2 pins). either out works. the drive i'm using also has a play/next button on the front, so you can change tracks that way. bare bones, no frills, cd player with parts i had around the house.
Sun 411 case...
I've used Sun model 411 cases to build a couple of amps. A link to some pictures (not mine) is here:
http://eintr.net/systems/sun/sun411/
It's well built and compact. I managed to stuff dual GC monoblocks into one of them: dual 18v 160 VA Avel Lindberg torroids, OPA 627 buffers, minimized NIGC with PD's recommended components, WBT RCA plugs and Vampyre binding posts. Also a Noble pot for volume and a vandal momentary switch for on/off. I'll try to post a picture or two when I get home.
I've used Sun model 411 cases to build a couple of amps. A link to some pictures (not mine) is here:
http://eintr.net/systems/sun/sun411/
It's well built and compact. I managed to stuff dual GC monoblocks into one of them: dual 18v 160 VA Avel Lindberg torroids, OPA 627 buffers, minimized NIGC with PD's recommended components, WBT RCA plugs and Vampyre binding posts. Also a Noble pot for volume and a vandal momentary switch for on/off. I'll try to post a picture or two when I get home.
Picture as promised
Here's a picture of the inside. The transformers are on the left. At the back you can see the cube relay used for on/off. In the center are the MUR860 diodes with a 750 ohm resistor and 0.1uF cap across each to dampen ringing. Underneath them is the on/off toggle circuitry. A 1/4" copper bar acts as heatsink. The GCs use Panasonic FC caps and P2P wiring. On the right you can barely see the OPA 627 buffers showing through. The EI transformer in back powers the on/off circuit, power LED, and cooling fan.
Here's a picture of the inside. The transformers are on the left. At the back you can see the cube relay used for on/off. In the center are the MUR860 diodes with a 750 ohm resistor and 0.1uF cap across each to dampen ringing. Underneath them is the on/off toggle circuitry. A 1/4" copper bar acts as heatsink. The GCs use Panasonic FC caps and P2P wiring. On the right you can barely see the OPA 627 buffers showing through. The EI transformer in back powers the on/off circuit, power LED, and cooling fan.
Attachments
Now the back...
And here's the back. It took quite a bit of
to get everything in. The fan is needed to keep the amp from 
but it's run at 5v so it's nearly inaudible. I also build a version using the Sun model 811 case. It's about twice as tall so there's alot more room inside (and the larger fan is totally silent), but it takes alot more work to clean the inside of the case to make it usable. The 811 does have enough room to allow for two inputs and a bigger copper heat sink.
And here's the back. It took quite a bit of
to get everything in. The fan is needed to keep the amp from but it's run at 5v so it's nearly inaudible. I also build a version using the Sun model 811 case. It's about twice as tall so there's alot more room inside (and the larger fan is totally silent), but it takes alot more work to clean the inside of the case to make it usable. The 811 does have enough room to allow for two inputs and a bigger copper heat sink.Attachments
Thanks.
If you think that's good, I'm working on helping a friend build an amp in a 19" rackmount case right now. It will have 5 channels with an active 2 way crossover and will be powering MTMs, each with one amp per driver. Total of 15 amps, 5 active crossovers, 8 EI transformers, 16 bridge rectifiers, two 26,000 uF caps, a soft start circuit, and a VU meter all in one case. The cable management alone is a heroic task. Plus it was done on a budget of under $200.
If you think that's good, I'm working on helping a friend build an amp in a 19" rackmount case right now. It will have 5 channels with an active 2 way crossover and will be powering MTMs, each with one amp per driver. Total of 15 amps, 5 active crossovers, 8 EI transformers, 16 bridge rectifiers, two 26,000 uF caps, a soft start circuit, and a VU meter all in one case. The cable management alone is a heroic task. Plus it was done on a budget of under $200.
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