He, he, TSSA will look very nice with such toroid metal jacket.
Nah, I have them already and they are not metal, just semi-special.
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Nah, I have them already and they are not metal, just semi-special.
Sissys
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Still we found SMPS regulated PSU deliver better in that particular application.
Do I understand you correctly ... you are suggesting a regulated Switched Mode Power Supply is a good thing for a phono stage?
I'm afraid I have to strongly disagree with you. I bought a SMPS as an "easy" PS for use when I set up my phono modules - in normal operation, they get powered by SLAs. (Doing all the testing to set various operational parameters takes a while, so I found it was easier to have a mains-powered PS, to keep the voltage constant.)
Now, while I can read circuit voltages quite easily with the SMPS, when I start to measure the actual RIAA signal response (and set overall gain) ... the SMPS produces far too much hash on the signal to be able to measure it accurately.
I then built a double-regulated emitter-follower PS which is fed by the SMPS ... and I still got too much hash on the signal to make a good reading of the signal levels at the various frequencies.
So I use the SMPS for setting circuit parameters ... and then use batteries when I am measuring the phono stage output at various frequencies.
So, IME, an SMPS is a definite no-no for a phono stage.
Regards,
Andy
Sissys
3000VA??? Now we are getting out of control
SupposinglyStajo, what are you cooking with two 3KVA beasts?
http://www.diyaudio.com/forums/pass-labs/169323-semisouth-donuts.html. Them are chokes.
Wicked chokes to say the least.
Moderate compared to Maguras air cored monsters. Cant find the thread now, will post it l8er
@AndyR
Siberia refers to his class A MOSFET amplifier PSU. Switched mode on a phono is looking for trouble indeed.
Thank you, Salas. But I find it "interesting" (actually, surprising is more like it! ) that Jim Hagerman's Bugle2 uses an external wall-wart SMPS to deliver 24v to the PCB. (I know because I recently modified a Bugle2 for a mate, to take out the fixed 100ohm res used as the load for 60dB LOMC use. I added a pair of parallel input RCAs for loading plugs ... and this necessitated putting the PCB in to a HiFi2000 metal box (instead of the plastic box the Bugle2 comes in).)
Regards,
Andy
Thank you, Salas. But I find it "interesting" (actually, surprising is more like it! ) that Jim Hagerman's Bugle2 uses an external wall-wart SMPS to deliver 24v to the PCB. (I know because I recently modified a Bugle2 for a mate, to take out the fixed 100ohm res used as the load for 60dB LOMC use. I added a pair of parallel input RCAs for loading plugs ... and this necessitated putting the PCB in to a HiFi2000 metal box (instead of the plastic box the Bugle2 comes in).)
Regards,
Andy
To make an smps with low enough emissions beyond a silent rail in the first place so to house it in the same box even its something that Linn does after years of development and at a cost. I am not sure there are off the self units capable to do best in MC phono without any compromise, but I have not investigated. If it is about an amp I get the size & weight gains but on a phono it becomes moot to even risk a chance for EMI.
Yea. Looks like industrial hi tech vacuum cleaners with materials like carbon for cooling. Third Apollo Project
Crazy Metal Danske
Donut a' la overkill - Solid State - diyAudio.rs
Heres my project. Almost finished Sorry for OT
Donut a' la overkill - Solid State - diyAudio.rs
Heres my project. Almost finished Sorry for OT
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Snyggt
What do you plan to do with such uge chokes ?
- Home
- Source & Line
- Analogue Source
- Simplistic NJFET RIAA