Search found 8 matches

by grufti
Mon Jan 20, 2020 7:33 pm
Forum: Build
Topic: Flat Balanced Input Moving Coil Phono Preamp Construction Information
Replies: 52
Views: 4021

Re: Flat Balanced Input Moving Coil Phono Preamp Construction Information

I can report on two improvements since I finished the MC preamp. I switched to tabbed jumper shunts. Those are so much easier to move around and I had simply run out. The other item is more interesting. I found a very nice 5W +/-15V switcher at mouser for $20. It's a RECOM RAC05-15DC. The 10W versio...
by grufti
Sun Dec 29, 2019 9:40 pm
Forum: The Peabody Lounge
Topic: "Deboosting" Google or Are We Banned? I'll Call Either A Win.
Replies: 37
Views: 4631

Re: "Deboosting" Google or Are We Banned? I'll Call Either A Win.

From the accident report in the local paper: "... 29-year-old Vista woman was seriously injured Monday morning when her pickup spun out across a rain-slick Escondido freeway ...". The pickup was a Ford Ranger, the driver Misty Epstein - RIP and condolences. I don't know where conspiracies come in on...
by grufti
Sun Dec 29, 2019 7:29 pm
Forum: Build
Topic: Flat Balanced Input Moving Coil Phono Preamp Construction Information
Replies: 52
Views: 4021

Re: Flat Balanced Input Moving Coil Phono Preamp Construction Information

I have finally "boxed" my incarnation of the Moving Coil Phono Preamp. The Mean Well power supply will probably get replaced and relegated to prototype use. It is a surprisingly good supply, but I still need to measure its performance in the box. The turntable connection uses CAT 6A cable. The amp c...
by grufti
Thu Dec 26, 2019 4:35 pm
Forum: Build
Topic: Flat Balanced Input Moving Coil Phono Preamp Construction Information
Replies: 52
Views: 4021

Re: Flat Balanced Input Moving Coil Phono Preamp Construction Information

I drilled out 1/4-20 nuts, also because I couldn't easily get M7 acorn nuts. I was hesitant, but in the end it wasn't a problem at all, worked like a charm.
by grufti
Thu Dec 19, 2019 5:49 pm
Forum: Build
Topic: Mastering Transfer Console
Replies: 3
Views: 257

Re: Mastering Transfer Console

I read the description and thought to myself: "I wonder what the wiring looks like inside that thing?" Then the photo came up. Oh, yeah! Looks amazing!
by grufti
Mon Dec 09, 2019 2:10 pm
Forum: Build
Topic: Flat Balanced Input Moving Coil Phono Preamp Construction Information
Replies: 52
Views: 4021

Re: Flat Balanced Input Moving Coil Phono Preamp Construction Information

This is a cartridge that I thought had one dead channel after another MC phono amp experiment. I installed it for the test figuring that it's broken already so who cares if something else goes wrong. It's actually in great shape. So now I have a 20th century Ortofon Jubilee that's still in great sha...
by grufti
Mon Dec 09, 2019 11:59 am
Forum: Build
Topic: Flat Balanced Input Moving Coil Phono Preamp Construction Information
Replies: 52
Views: 4021

Re: Flat Balanced Input Moving Coil Phono Preamp Construction Information

0.34mV @ 5cm/sec. I used the +52dB gain setting yesterday and applied more gain after software RIAA. It turns out that I could have easily used all +62dB gain for the record that I tested with.
by grufti
Sun Dec 08, 2019 11:03 pm
Forum: Build
Topic: Flat Balanced Input Moving Coil Phono Preamp Construction Information
Replies: 52
Views: 4021

Re: Flat Balanced Input Moving Coil Phono Preamp Construction Information

Stunningly good, thank you Wayne. I just played music through my MC board for the first time ... and it can only get better. I had the your MC board sitting on the bench with a Mean Well supply about a foot away. My 5R cartridge was loaded with 100R and the tonearm cable surgery had uncovered a botc...