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| |-+  DC 30
| | |-+  C30 Rectifier - 1x GZ34 or 2x 5V4
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Question: Which do you prefer and why?
1x GZ34
2x 5V4

Author Topic: C30 Rectifier - 1x GZ34 or 2x 5V4  (Read 7831 times)
archtop
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« on: November 07, 2007, 05:32:30 AM »

Which do you prefer and why?
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toneman
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« Reply #1 on: December 05, 2007, 03:58:17 AM »

I prefer 2x 5V4. Why? It's smoother and sound better to my ears. The GZ34 sound harsher and great when playing loud. I did not manage to push the volume pass 10 o'clock in my apartment yet and I love the sound without the master volume. Try it and decide for yourself. It's definately 2x 5V4 for me.   
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Tonebuddy
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« Reply #2 on: January 03, 2008, 06:25:07 AM »

+1 on two 5V4 (GZ32) rectifiers. The "CUT" control works better all the way, with the master volume bypassed.
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Roe
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« Reply #3 on: January 17, 2008, 10:59:37 AM »

can you use two gz34s for less sag?
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Tonebuddy
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« Reply #4 on: January 18, 2008, 04:07:43 AM »

Interesting. I have never tried that. I wonder if it is pointless? Does it change the sound...
Ask Nik, please.
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jezzbo
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« Reply #5 on: January 18, 2008, 06:26:53 AM »

can you use two gz34s for less sag?

I think that your amp will see to much voltage.

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archtop
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« Reply #6 on: January 19, 2008, 03:26:34 AM »

I got to hear my DC30 for the first time yesterday. My friend had just finished making it for me, as well as an AC30. It was an interesting comparison. While they sound related, they are definately different.

On the rectifier, I tried both the GZ34 and the 2x 5V4's. Both sounded good. 2x 5V4's seemed to make the amp brighter with more headroom. I was testing the amp at all volumes, and cranked (ditorted, no master volume) I think it had more definition, or note separation with 5V4's, and was perhaps a little blurrier sounding with the GZ34. These are just initial observations.

Overall, I prefer the AC30 for pushed, and really dirty sounds, and the DC30 has a more HiFi clean sounds.

For those interested, the DC30 build uses TDS transformers, and doesn't have the bright caps connected at the moment.
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Tonebuddy
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« Reply #7 on: January 19, 2008, 01:45:41 PM »

quote by arctop
Quote
and doesn't have the bright caps connected at the moment

Can you please explain? A somewhat graphical explanation with my eyes on  the layout.

BTW, does the TDS transformers have end bells?

Kind regards, Tonebuddy
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Timd
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« Reply #8 on: July 09, 2008, 08:53:59 AM »

yep, 2x5V4 has made it sound better.  It's subtle but hard to miss...much smoother and distortion sounds better now.
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ampkits
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« Reply #9 on: October 19, 2008, 02:51:57 PM »


We do have 5V4 rectos as an option actually.

Not many ppl ask for them, so...

Thanks!

nik
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alwalt
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« Reply #10 on: April 30, 2009, 07:28:55 PM »

Does this change of rectifyng type requieres any adittional mod to the amp? Or is it just turn off/change them/turn on?

would this Groove Tubes do the same job?

Groove Tube Gold Series GT-5Y3 GZ30 Rectifier Tube

http://www.guitarcenter.com/Groove-Tube-Gold-Series-GT-5Y3-GZ30-Rectifier-Tube-212222-i1125613.gc

Thanks in advance, I'm really tempted to do this mod, as I have read from your experience. I barely tweak my amp, I love just like it is, but now you guys tempted me!
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