Horse First, Then Cart!
Hi Guys, I've been running a much quieter version of my VinyLiberator preamp for about a month, now. I'm feeding U-1 directly from the cartridge and load resistor. The passive HF roll-off network is now after U-1, filtering U-1's noise by the RIAA HF roll-off characteristic, and having far less Johnson noise, as the resistor is now only 5.6 K (100K pot, across for HF trim). The capacitor to ground is .02uf and the pot sets resistance for correct RIAA HF roll-off. It sounds a good 20db quieter. Switching supply noise keeps me from being able to accurately evaluate noise performance. I'll post schematics and do a world-wide You Tube eventually. I do want FAR Circuits to run me some blank boards, so I'm looking to design a simple, low cost version of my preamp and have FAR run me some blank boards late summer or early fall. Thanks Guys!
Attached: Rough, Working Schematic, cleaned up a bit
Hi Guys, I've been running a much quieter version of my VinyLiberator preamp for about a month, now. I'm feeding U-1 directly from the cartridge and load resistor. The passive HF roll-off network is now after U-1, filtering U-1's noise by the RIAA HF roll-off characteristic, and having far less Johnson noise, as the resistor is now only 5.6 K (100K pot, across for HF trim). The capacitor to ground is .02uf and the pot sets resistance for correct RIAA HF roll-off. It sounds a good 20db quieter. Switching supply noise keeps me from being able to accurately evaluate noise performance. I'll post schematics and do a world-wide You Tube eventually. I do want FAR Circuits to run me some blank boards, so I'm looking to design a simple, low cost version of my preamp and have FAR run me some blank boards late summer or early fall. Thanks Guys!
Attached: Rough, Working Schematic, cleaned up a bit
Attachments
VinyLiberator Blue Collar Economy Edition
Hi Guys, here's a shot of my new edition of the VinyLiberator Pre-Amp. It's a simplified, low-cost version, that has no level indicators, and has adequate low-noise performance while using a pair of economical TL072's for amplification. That rascal is designed to drop into an old Westell modem case, so it looks cute and sharp, when fully assembled. You Tube video should on in a couple weeks or so.
Hi Guys, here's a shot of my new edition of the VinyLiberator Pre-Amp. It's a simplified, low-cost version, that has no level indicators, and has adequate low-noise performance while using a pair of economical TL072's for amplification. That rascal is designed to drop into an old Westell modem case, so it looks cute and sharp, when fully assembled. You Tube video should on in a couple weeks or so.
Attachments
Love That Witty Response!
...Not any more than I'd show a picture of my 420 lb fat, sexy, bod in a Skinz Men's Riviera Brief Bikini in a fat people's forum!
Without even cleaning off the solder flux, nevertheless! The difference between *helluvamess and art form is in the eye of the beholder.
*hell of a mess (so people in non-English speaking countries can enjoy, too)
If you're like me, you won't show the bottom of perfboard projects.
...Not any more than I'd show a picture of my 420 lb fat, sexy, bod in a Skinz Men's Riviera Brief Bikini in a fat people's forum!
Without even cleaning off the solder flux, nevertheless! The difference between *helluvamess and art form is in the eye of the beholder.
*hell of a mess (so people in non-English speaking countries can enjoy, too)
Attachments
Last edited:
Reviewed on Interface
Just for gits and shiggles, here's JC, on the program, "Interface", reviewing a custom edition of the VinyLiberator that I built for him.
Just for gits and shiggles, here's JC, on the program, "Interface", reviewing a custom edition of the VinyLiberator that I built for him.
Attachments
I Never Thought Of That!
Hahaha!, I never even thought of it that way!!! Guess it's a good thing the pre-amp wasn't a woodworking project! Thanks for a nice LOL!
Hey, nice presentation by a professional broadcaster. I liked the horse before cart mod also. You got me scared for a moment by who could be JC reviewing your phono until I clicked.
Hahaha!, I never even thought of it that way!!! Guess it's a good thing the pre-amp wasn't a woodworking project! Thanks for a nice LOL!
Endless Pursuit
Hi Guys, I thought I'd show you the results of my endless pursuit of audio perfection in my current state of the art in pre-amp/turntable performance.
You Tube Link Heart-Alone
Hi Guys, I thought I'd show you the results of my endless pursuit of audio perfection in my current state of the art in pre-amp/turntable performance.
You Tube Link Heart-Alone
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.