Everything posted by spritzer
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i'm on a roll... the kgsshv
They are CMF60's so 1/2W. Just labeled RN60D to be mil-spec.
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The Headcase Stax thread
That would be perfect...
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Blue Hawaii Special Edition
The 1486 is partially insulated so you just need the ceramic insulator for them. Better yet, use the KSA1156 where you can.
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Schiit Ragnarok
It's a speaker amp so it's of no use for headphones.
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i'm on a roll... the kgsshv
The other caps are for the servo so anything above 50V is fine.
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Blue Hawaii Special Edition
That psu is just one of many BH variants that I've drawn up over the years. 500V input caps and 450V output caps. You can get it through with some care (that's what she said.... ) but a drill does help. Just make sure to deburr...
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The Headcase Stax thread
Gotta love those SR-X Mk3 Pro's. Just sent out my last set but to the best home imaginable.
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Megatron Electrostatic Headphone Amplifier
The board is actually much smaller....
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The Headcase Stax thread
Me needs some NC stuff... I also need a shill to post non stop about my stuff on HF. Anybody want to get a free amp or something?
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The Headcase Stax thread
Yeah... I'd go with Audio Valve too. Such honest and upstanding company.
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New HiFiMAN headphones
That's their house sound so it's likely. The HE-5 for me is the benchmark of what an excessively forward transducer sounds like.
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Blue Hawaii Special Edition
These boards won't ever be released but we did update the old Headamp design too so that could be shared. No sense in moving away from 20mA for this design. It's those steel bars which hold everything together. They are never the correct size so the amps will become difficult to get right. Having everything terminate in the sinks makes things easier but not always. This is why I'm looking into custom boxes...
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Megatron Electrostatic Headphone Amplifier
That's one of the reasons why I'm hesitant to build more Megatron's. I did design a new PCB for it (hello huge caps plus a bunch of other changes) and get some umbilical cable but it is such a complex amp.
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i'm on a roll... the kgsshv
No jumpers on that one.
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Blue Hawaii Special Edition
Yup, it's a modushop chassis. I'm just about done with them and will have to move into custom stuff. Using these is a bit like building on sand... Anyway, here it is with the toroid I was forced to install after the R-cores were DOA. It's all attached to the top panel which does make things tricky. Aside from some slight transformer noise it runs perfectly and doesn't get too hot. Here is is running on the bench:
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i'm on a roll... the kgsshv
Do a double blind test and then report back.
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Megatron Electrostatic Headphone Amplifier
There is a drawing of them in his ebay listings.
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Megatron Electrostatic Headphone Amplifier
Hehe. Perhaps scrap the terminal blocks and put the transformers at an angle?
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Part Sourcing Assistance/Advice Thread
He's referring to the 2SJ109, the dual J74. Not that easy to find.
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Blue Hawaii Special Edition
While on the subject, my mini BHSE is nearing completion. Same size as the Carbon and just a bit bigger than Justin's amplifier unit but this one has the PSU built in. Was supposed to have a R-core transformer but that went apeshit on me so a toroid was installed in a hurry.
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Blue Hawaii Special Edition
That's also Dalbani, aka the people who sold me hundreds of fake 1968's...
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Blue Hawaii Special Edition
I have enough parts stockpiled to make some 500 BHSE's and I imagine Justin has some spares as well.
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kgst
24V is better so go with that.
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i'm on a roll... the kgsshv
Plugged the ports and played with the springs a bit. Other than that they are stock.
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i'm on a roll... the kgsshv
M4 is what I generally use for this. Locking washers on the bolts so they will never move.