RE: Just tried 5U4G.....

Posted by Lord Soth (A) on October 10, 2012 at 09:09:40

In Reply to: RE: Just tried 5U4G..... posted by Captn Dave on October 8, 2012 at 10:50:02:

My Tube amp has an easy fixed (adjustable) bias feature.

I don't really have to measure the B+. There is a built in resistor in the bias circuitry which requires me to simply re-set it to 0.7mV as long as EL34 tubes are used.
This is because after I subbed in the new rectifiers, from 5Y3 to 5U4G, the bias naturally was changed.
I just had to re-adjust it according to the manufacturer's specs.

Not that it matters, I am currently using the RCA 5R4GY rectifier and it blows away the 5Y3 and 5U4G in terms of sonics. I got back my (previously missing) low end bass along with a warmish mid-range and sonic clarity from top to bottom.
The top-end also sizzles in a pleasant way.

I'm done with rectifier tube rolling for the time being. ;)

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Follow Ups Full Thread

Topic - Tube Rectifiers - Need Expert Help - Lord Soth 05:39:58 09/24/12 (19)

JOC, are you looking for a "stiffer" sound? - FenderLover 07:55:46 09/29/12 (7)

RE: JOC, are you looking for a "stiffer" sound? - Lord Soth 03:10:27 09/30/12 (6)

" Bendix 6106 ()200 hrs use) has tight and punchy bass but the midrange is too stiff " - FenderLover 04:00:07 09/30/12 (5)

RE: " Bendix 6106 ()200 hrs use) has tight and punchy bass but the midrange is too stiff " - Lord Soth 04:24:43 09/30/12 (4)

Synergy is the thing here - FenderLover 04:41:42 09/30/12 (3)

RE: Synergy is the thing here - Lord Soth 06:31:15 09/30/12 (2)

RE: Synergy is the thing here - FenderLover 15:07:36 09/30/12 (1)

RE: Synergy is the thing here - Lord Soth 07:10:03 10/1/12 (0)

RE: Tube Rectifiers - Need Expert Help - JSTRM 13:55:07 09/25/12 (0)

RE: Tube Rectifiers - Need Expert Help - Neff 12:17:45 09/24/12 (4)

5R4 and 4uF Capacitor - Lord Soth 09:37:36 09/27/12 (2)

RE: 5R4 and 4uF Capacitor - Cleantimestream 11:36:39 09/27/12 (1)

Plugged in a 5R4 and it works!!!! - Lord Soth 07:19:04 10/1/12 (0)

I like RCA 5Y3GT rectifiers. So did Jeff Korneff" As did the elegant George Wright~nT - Cleantimestream 09:27:51 09/25/12 (0)

RE: Tube Rectifiers - Need Expert Help - Tom Bavis 06:09:31 09/24/12 (4)

Just tried 5U4G..... - Lord Soth 09:30:21 09/27/12 (2)

RE: Just tried 5U4G..... - Captn Dave 10:50:02 10/8/12 (1)

RE: Just tried 5U4G..... - Lord Soth 10/10/1209:09:40 10/10/12 (0)

RE: Tube Rectifiers - Need Expert Help - andy evans 07:32:38 09/24/12 (0)

Follow Ups

RE: Just tried 5U4G..... - Lord Soth 10/10/1209:09:40 10/10/12 (0)

RE: Just tried 5U4G.....

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