Search found 3026 matches

by mediatechnology
Wed Jun 20, 2018 6:46 pm
Forum: Pro Audio Design
Topic: Flat Phono Preamp Based on John's P10 and 2SK389
Replies: 237
Views: 206522

Re: Flat Phono Preamp Based on John's P10 and 2SK389

Still not at VW Beetle levels, but been in continuous production longer than the 2CV was! I know what a 2CV is. I owned an ID19B. I had talked to an applications engr. at That & designed a low Z resistive network in front of the 150/SSM2019. This avoids the preamp input seeing the 40 ohms direct fr...
by mediatechnology
Wed Jun 20, 2018 5:47 pm
Forum: Pro Audio Design
Topic: Flat Phono Preamp Based on John's P10 and 2SK389
Replies: 237
Views: 206522

Re: Flat Phono Preamp Based on John's P10 and 2SK389

OK, I was confused the DL-103 is the lower-cost one.
I guess "R" means "reference" :lol:
by mediatechnology
Wed Jun 20, 2018 9:02 am
Forum: Pro Audio Design
Topic: Flat Phono Preamp Based on John's P10 and 2SK389
Replies: 237
Views: 206522

Re: Flat Phono Preamp Based on John's P10 and 2SK389

Thanks Bill. I tried the THAT1512 and at DL-103 levels and impedance it was pretty good. Does the "R" in DL-103R mean re-tipped? Are the DL-103Rs from cartridge bodies returned to Denon? I've been wanting to get an "R" since they're reasonably priced. Is this the preamp/PCB you were working on with ...
by mediatechnology
Fri Jun 15, 2018 6:35 pm
Forum: Document
Topic: Digitizing LPs: How To Get Black Gold On Your Hard Drive
Replies: 4
Views: 76

Re: Digitizing LPs: How To Get Black Gold On Your Hard Drive

I recognised that EMT immediately as soon as I saw it as have seen posts from Christian before. nice setup. I think he might be missing a few tricks though. Not least that there is a very good argument for doing an M-S conversion before declicking as the majority of clicks are vertical. Of course t...
by mediatechnology
Fri Jun 15, 2018 1:27 pm
Forum: Document
Topic: Digitizing LPs: How To Get Black Gold On Your Hard Drive
Replies: 4
Views: 76

Digitizing LPs: How To Get Black Gold On Your Hard Drive

Digitizing LPs: "How To Get Black Gold On Your Hard Drive, A White Paper On A Pitch Black Topic," Christian Rintelen Christian contacted me about the flat moving magnet preamp and sent me this white paper he wrote. http://www.proaudiodesignforum.com/images/pdf/Christian_Rintelen_Digitizing_LPs.pdf ...
by mediatechnology
Thu Jun 14, 2018 5:33 pm
Forum: Pro Audio Design Forum
Topic: Buy PC Boards and Kits from KA-Electronics.com
Replies: 0
Views: 53

Buy PC Boards and Kits from KA-Electronics.com

The address for the KA Electronics Store is http://www.ka-electronics.com

Payment processing is through PayPal.
Guest Checkout and international shipping are available.

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by mediatechnology
Thu Jun 14, 2018 5:25 pm
Forum: Document
Topic: More Flying Rails
Replies: 1
Views: 4103

Current Shunt Monitor Uses Flying Rails/Floating Supply

I think it may have been Gus about 10 years ago that had mentioned a TI, perhaps Burr Brown, flying rail instrumentation circuit. Probably because I wasn't looking for it an image search today turned up this circuit from the INA117 data sheet. http://www.proaudiodesignforum.com/images/jpg/Leakage_C...
by mediatechnology
Mon Jun 11, 2018 8:44 pm
Forum: The Peabody Lounge
Topic: Watch The Water
Replies: 1
Views: 390

Re: Watch The Water

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by mediatechnology
Mon Jun 11, 2018 6:46 am
Forum: Pro Audio Design
Topic: New: A Direct-Coupled Input-Capacitorless Active Mic Preamp
Replies: 80
Views: 82014

Re: New: A Direct-Coupled Input-Capacitorless Active Mic Preamp

I just wanted to make it clear to those joining us late: LF servo resonance is not unique to an input-capacitorless design. I'll draw the analogy that a servo is a subtractive, derived, HP filter. Any servo filter order greater than "1" is prone to peak. Though the preamp's servo filter order may be...
by mediatechnology
Mon Jun 11, 2018 6:10 am
Forum: Pro Audio Design
Topic: New: A Direct-Coupled Input-Capacitorless Active Mic Preamp
Replies: 80
Views: 82014

Re: New: A Direct-Coupled Input-Capacitorless Active Mic Preamp

Ok, so for static correction of the offset we can set aside worries about small unchanging correction currents. LF resonance/peaking is the concern. I think you've said that all along but for those joining us I thought that deserved some clarification. All input-corrected(1) servos we've seen thus f...