6V6 line preamp - Page 141

stajo · 25th January 2013, 09:38 PM

Quote:

Originally Posted by yagoolar

What kind of glue have you used for attaching caps to alu radiator?

None, its Cable ties. But heat glue works fine

Staffan

yagoolar · 25th January 2013, 09:40 PM

Quote:

Originally Posted by stajo

None, its Cable ties. But heat glue works fine

Staffan

I have not noticed. Thanks.

Salas · 25th January 2013, 09:52 PM

Hi Staffan, comes out nicely on the box. Did you get any difference in tone with the DC in the filaments nonetheless?

stajo · 25th January 2013, 10:04 PM

DC worked fine and I didnt hear much of a difference so far. Gonna work off B+ ripple tomorrow and then compare to elevated AC.

But overall its a lovely little rat-amp. I will try it on a friends 6C33 OTL some day, which is especially hard driven.

Staffan

tcqanh · 26th January 2013, 01:52 AM

Hi all,

I've just built 6V6 pre for my friend. Here are some pics. Sound is very good on mid, bass and rich tone.

My schema is based on Salas' one, but I use AC filament with hang of 40Vdc. PSU is with 5V4 tube, CLCRCLC for separate chanel. No hum AC, but I have some hizz on one chanel. I think it's tube noise.

buzzforb · 26th January 2013, 02:11 AM

Very nice. Excellent construction

Salas · 26th January 2013, 02:57 AM

Quote:

Originally Posted by tcqanh

Hi all,

I've just built 6V6 pre for my friend. Here are some pics. Sound is very good on mid, bass and rich tone.

My schema is based on Salas' one, but I use AC filament with hang of 40Vdc. PSU is with 5V4 tube, CLCRCLC for separate chanel. No hum AC, but I have some hizz on one chanel. I think it's tube noise.

Good looks. Did you take any anti microphonic measures? Its the common cathode 15dB gain circuit yes?

RCruz · 26th January 2013, 11:49 AM

Quote:

Originally Posted by tcqanh

Hi all,

I've just built 6V6 pre for my friend. Here are some pics. Sound is very good on mid, bass and rich tone.

My schema is based on Salas' one, but I use AC filament with hang of 40Vdc. PSU is with 5V4 tube, CLCRCLC for separate chanel. No hum AC, but I have some hizz on one chanel. I think it's tube noise.

Splendid build

buzzforb · 26th January 2013, 11:57 AM

R Cruz, I assume that you have built this, having listened to the NJfet RIAA.

RCruz · 26th January 2013, 06:29 PM

No.... unfortunately I do not build anything with bulbs for long now... but I will.

I am using a p2p dcb1 with V12r shunts as a reference.

26th January 2013, 02:11 AM	#1406
buzzforb diyAudio Member Join Date: Oct 2010 Location: Burlington, NC	Very nice. Excellent construction __________________ \|F6 Kit/Trasnformer GB Sign up sheet Closed,\|Primrose GB Sign Up sheetClick Here ...Shape the sound , Man!

26th January 2013, 11:57 AM	#1409
buzzforb diyAudio Member Join Date: Oct 2010 Location: Burlington, NC	R Cruz, I assume that you have built this, having listened to the NJfet RIAA. __________________ \|F6 Kit/Trasnformer GB Sign up sheet Closed,\|Primrose GB Sign Up sheetClick Here ...Shape the sound , Man!

26th January 2013, 06:29 PM	#1410
RCruz diyAudio Member Join Date: Sep 2006 Location: Saxon Blog Entries: 1	No.... unfortunately I do not build anything with bulbs for long now... but I will. I am using a p2p dcb1 with V12r shunts as a reference. __________________ RC

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25th January 2013, 09:52 PM	#1403
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	Hi Staffan, comes out nicely on the box. Did you get any difference in tone with the DC in the filaments nonetheless?

25th January 2013, 10:04 PM	#1404
stajo diyAudio Member Join Date: Jun 2011 Location: Stockholm	DC worked fine and I didnt hear much of a difference so far. Gonna work off B+ ripple tomorrow and then compare to elevated AC. But overall its a lovely little rat-amp. I will try it on a friends 6C33 OTL some day, which is especially hard driven. Staffan

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