Recent content by hacker

Hi Gareth, what's up with the hnap? Got any photos?

Folks, I put a copy of Jim's original Starfish schematic here: https://www.dropbox.com/s/f2ct739uxrsmg9a/StarFish%20PreAmp%20Schematic.pdf

The latest HackerCAP Gerbers are here: https://www.dropbox.com/sh/ri114g3zzbx3ppn/AADN0tiqaI9uuYMtJ_BxRXyea?dl=0 The latest HackerNAP Gerbers, build manual, BOM (out of date now, I'm sure) and schematic are here: https://www.dropbox.com/sh/i2teeyw3ts6ka99/AAAHmY-VVBReuiiR7Bgij-BJa?dl=0

I got around to building an external PSU for the MM phono stage in the Music Hall pa2.2. It's based on an old R-core transformer I had in the bits box (in fact everything I'm showing you here is from the bits box except the enclosure), a Twisted Pear LCBPS bipolar supply (green PCB), and a...

Agreed! At some point I want to try bypassing the digital preamp/DAC/thing by using the deck -> phono pre -> good preamp (perhaps one of PigletsDad's B4s) -> power amp. It'll be interesting to hear the difference if there is one... I'm not sure my aging ears can hear digital artifacts introduced...

Good grief, I think I still have that old box of PCBs somewhere. I'll see about digging it out.

Hi folks. It's been a while since I had a chance to fiddle with hifi, and it's been even longer since I posted anything on pfm. About time to change that, I think. The back story is that I've been listening to all-digital music for years now, mostly Spotify. I built my system around a single...

Connexelectronic do one for $16 USD https://connexelectronic.com/product/spc1/

Heat shrink will be fine, no worries.

Just to be safe I'm going to assume the worst and proceed under the assumption that you mean +ve and -ve to be the +40V and -40V power rails (which is normally what +ve/-ve would refer to). Placing the inductor//resistor across those would effectively put a short across the power rails because...

I'm finding that approx 25% of the 22uFs are leaky. I put those ones in a separate pile ;-)

It's my take on the Dallas Rangemaster treble booster. I already have prototype #1 that's amazing... really, really good... but I think I can gild the lily a bit more using really great components. The idea is to remove sources of noise/distortion except for the germanium transistor, which does...

Thanks all, I've scored enough to to the job. Much appreciated! For anyone that's interested, this is what Wima had to say when I asked about doing a run of the 22uF/16V: Looks like we'll never see them again :(

Thank you, gents. PMs sent.

I'd take 2, 4, 8, 16... however many I can get my hands on, really. I have use for them in guitar pedals and would love a stockpile for experimenting with.