[augustwest]

Schematic for SinglePower MPX3?
 
Does anyone have basic schematic for a SinglePower MPX3? My MPX3 had the usual transformer failure last week. I currently have a amp tech who will replace the it with a more robust one.
 
While he has it apart, I asked that he install a “gain reduction” toggle switch to occupy the hole that was previously used for the “high power” switch that is being removed. To make this request easier, he ask if I could come up with a basic schematic for the amp. I said I would give it a try. . . . . So does anyone have, or know where I can get the schematic for this amp?
 
Thanks for any info you can provide.

 

[elmoe]

Sorry I can't help but I am extremely interested as well (in case mine ever does break), so if you don't mind I will subscribe.

 

[nikongod]

Kevin Gilmore has posted it a few times. 
 
http://www.head-fi.org/t/436281/supra-schematic
 
Same as a supra, with some part value differences in the audio section, and LARGE differences in the power supply section. 
Since every SP is just a little bit speshul, the best you will find is really just a guideline. That should get anyone who should be poking around in there started anyways. 
 
The "gain control" was just a few extra resistors in the volume control. Basically the same thing you would get if you bought those RCA attenuators. 

 

[elmoe]

Thanks!

 

[00940]

http://gilmore.chem.northwestern.edu/singlehoursuprampx.jpg (coming from here )
 
 
edit : oops, I didn't refresh the page and so I didn't see nikongod had already posted it.

 

[augustwest]

Thanks,
 
"Kevin Gilmore has posted it a few times. 
 
http://www.head-fi.org/t/436281/supra-schematic
 
Same as a supra, with some part value differences in the audio section, and LARGE differences in the power supply section. 
Since every SP is just a little bit speshul, the best you will find is really just a guideline. That should get anyone who should be poking around in there started anyways. 
 
The "gain control" was just a few extra resistors in the volume control. Basically the same thing you would get if you bought those RCA attenuators."
 
 
I saw that and was confused by the Supra label. I will forward it on to my amp tech with your note as to it being a basic starting point and not an exact road map.
 
Thanks again!

 

[KenJKM]

I need service manual for a singlePower audio One. MPX3 headphone amp. R59 is black I need the Value of it.also would like the values of ZD1,ZD2,ZD3. please help Ken 6786007627