As a divorced 5050 father I dont really get so far atm. But I could use a summer estate. Maybe something up in the hills?
My Benz LP (0.28mV) works fine with 58dB phono stage gain. Of course, your preamp gain is relevant too - mine has 11dB of gain.
Regards,
Andy
and the amp gain, and the speaker sensitivity
My preamp is a buffer – DCB1.
Curious, what's your total gain structure and what's your system?
(One day I will be punished for being on constant off topic.)
Aah, OK, a passive preamp - then, yes, I suggest you will need more than 58dB gain in the phono stage.
Just as an example:
* with 55dB gain in the phono stage
* and with my last preamp - which had only 6db gain,
... I didn't quite get the volume I wanted, when the volume control was fully clockwise. Whereas when I moved to my new preamp, its 11dB of gain is plenty - so I no longer need to turn up the preamp to max.
Speakers are Maggies - very low efficiency (83-84dB); amp has 28dB of gain.
Regards,
Andy
I saw those recently and thought they looked interesting (like, maybe they could be rhopoint oem?). Where are you using them in the circuit, Buzz?
The biggest supplyer of VARs seems to be Partsconnexion Vishay VAR-Series "naked" Z-FOIL RESISTOR
Digikey seems to have 3 sizes https://www.digikey.com/product-highlights/us/en/vishay-precision-z-foil-var-resistor/310
Then it is Hificollective that sells CARs Charcroft Z-Foil Resistors for Audio homepage. Does those hold the same qualities? Anyone knows other sources?
Digikey seems to have 3 sizes https://www.digikey.com/product-highlights/us/en/vishay-precision-z-foil-var-resistor/310
Then it is Hificollective that sells CARs Charcroft Z-Foil Resistors for Audio homepage. Does those hold the same qualities? Anyone knows other sources?
I use them as the 1.5K power resistor dividing the current of the folded stage. I have used them as source resistors in both power amp and preamp builds and will be using them in the signal path in my rebuild of the Salas 6v6 preamp. I think you have to go to a 5ppm SMD(Vishay TNPU or Susumu RG) or the Naked Vishay's to see much improvement, but you do so at a large multiple of the price. Is it audible? At this range it is getting tough to discern and the build has to be executed very well to appreciate the subtle differences.
Looks like Charcroft had Vishay make some "special order" resistors for them and just rebranded.
I buy them direct from TEXAS COMPONENTS
Contact Ms. Janet Alcebo - jalcebo@texascomponents.com - she will send you an invoice and you can pay through PAYPAL.
Takes about two weeks for them to make what you want. You can get any value you desire and the price is a little better than any of those other folks will charge you.
The CHARCROFT must be the same thing - sure look the same. I am sure Ms. Alcebo would tell you if there is any difference.
Contact Ms. Janet Alcebo - jalcebo@texascomponents.com - she will send you an invoice and you can pay through PAYPAL.
Takes about two weeks for them to make what you want. You can get any value you desire and the price is a little better than any of those other folks will charge you.
The CHARCROFT must be the same thing - sure look the same. I am sure Ms. Alcebo would tell you if there is any difference.
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Thanks Salas. I had to eBay some cheap 10W resistors before I could try this out. So, with 1R dropping resistors and the 500R dummy load I'm getting 49.5V/50.2V. I'm guessing I will have to increase the value of the dropping resistors then?
Thanks for your help. I don't have any suitable resistors on hand so I'll settle with the slightly high voltage. Now I'll get going with the boring metal work for the chassis. Not exactly looking forward to making the panel holes for the XLR connectors with a hand drill and no large enough drill bits 