What r u doing at this moment?? - Page 13

rcavictim · 5th December 2009, 03:24 PM

Last couple of days I've been upgrading the power supply in my 1619-809 A2SET amp shown in my avatar. The orginal power xfmer was too small in the VA department but it was all I had from on-hand parts at the time I built it. In particular the 6.3 volt winding was overloaded considerably with the DC supply load for the pair of 809's. I just managed to shoehorn another filament xfmer under the chassis which takes about 50 watts off the power xfmer load. I used to only have an hour before I had to shut it down. Now it has been tested out to 3-1/2 hours play time without overheating worry. As a bonus I can now put 811A bottles in there as well. They sound quite similar, also very good but are only being idled in this circuit.

This amp has all the magic DHT SET tone some of us have heard and know is to die for. Finally I'll be able to really enjoy it.

Glowbug · 5th December 2009, 04:16 PM

Pics?

Watching the Big East championship game now. Pitt/Cincy. Snowing, looks like great football weather

Gyuri · 23rd December 2009, 02:58 PM

I dug it out my Pink Floyd LPs, I listen to these.
I break walnut meanwhile, in order to be able to prepare the Christmas traditional cake tomorrow.

Gyuri

5th December 2009, 03:24 PM	#121
rcavictim diyAudio Member Join Date: Jun 2004 Location: Cool end of a soldering iron NW of Toronto	Finally time for a small amp upgrade. Last couple of days I've been upgrading the power supply in my 1619-809 A2SET amp shown in my avatar. The orginal power xfmer was too small in the VA department but it was all I had from on-hand parts at the time I built it. In particular the 6.3 volt winding was overloaded considerably with the DC supply load for the pair of 809's. I just managed to shoehorn another filament xfmer under the chassis which takes about 50 watts off the power xfmer load. I used to only have an hour before I had to shut it down. Now it has been tested out to 3-1/2 hours play time without overheating worry. As a bonus I can now put 811A bottles in there as well. They sound quite similar, also very good but are only being idled in this circuit. This amp has all the magic DHT SET tone some of us have heard and know is to die for. Finally I'll be able to really enjoy it. __________________ I.Q.Test. Have you ever purchased a recreational snowmobile?

5th December 2009, 04:16 PM	#122
Glowbug diyAudio Member Join Date: Feb 2006 Location: Hillsborough, NC/McLean, VA	Pics? Watching the Big East championship game now. Pitt/Cincy. Snowing, looks like great football weather __________________ Jim J.

23rd December 2009, 02:58 PM	#123
Gyuri diyAudio Member Join Date: Nov 2003 Location: Budapest	I dug it out my Pink Floyd LPs, I listen to these. I break walnut meanwhile, in order to be able to prepare the Christmas traditional cake tomorrow. Gyuri __________________ Those who would have deserved the life they are all dead already. "Oh, my dead dears!" - Captain Cat

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