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21

Tube Amp Building - Tweaks - Repairs / Re: Any tips for taming a wild 5E3?

« Last post by tubeswell on June 11, 2026, 03:37:59 am »

To tame a 5E3


Use lower gain tubes in the preamp (5751 or 12AY7 in V1, and/or 12AT7 in V2)
Ditch one or more of the preamp cathode bypass caps.
Reduce coupling caps to 22nF (instead of 100nF)
Attenuator

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Tube Amp Building - Tweaks - Repairs / Re: Any tips for taming a wild 5E3?

« Last post by tubeswell on June 11, 2026, 03:34:13 am »

Robinette's 1/4 Power switch: https://robrobinette.com/5e3_Modifications.htm#Quarter_Power_Switch

That's Fender's switch - not Rob's. He plagiarises everything and calls it his.


(Fender put it on their Eric Clapton Tremolux)

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Tube Amp Building - Tweaks - Repairs / Re: Any tips for taming a wild 5E3?

« Last post by passaloutre on June 10, 2026, 08:37:41 pm »

Yes I’ve used something like that before also, but a simpler implementation. It sounds good!

24

Other Topics / Re: Meme of the day

« Last post by shooter on June 10, 2026, 06:13:12 pm »

...

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Tube Amp Building - Tweaks - Repairs / Re: First amp build

« Last post by Mongrel714 on June 10, 2026, 05:22:41 pm »

You keep quoting my posts about the standby switch wiring asking about fusing, but it was Rontone that made the fuse comment. I'll defer to him to answer the fusing questions.

Sorry bout that, having some long days at work.

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Tube Amp Building - Tweaks - Repairs / Re: First amp build

« Last post by JPK on June 10, 2026, 01:04:02 pm »

You keep quoting my posts about the standby switch wiring asking about fusing, but it was Rontone that made the fuse comment. I'll defer to him to answer the fusing questions.

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Other Topics / Re: Anybody watching Gold?

« Last post by shooter on June 10, 2026, 08:57:26 am »

I put a few $$'s on a Canadian mining company i've been buy'n/sell'n for 15+ years.


still expecting silver to stabilize @ $50-$60, then  start it's upward run peak'n by years end.

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Other Topics / Re: Anybody watching Gold?

« Last post by EL34 on June 10, 2026, 08:37:05 am »

Gareth's update

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Other Topics / Re: Anybody watching Gold?

« Last post by EL34 on June 10, 2026, 08:19:52 am »

After all the speculators and short term people jumping into silver ran the price up to $120, the selloffs and consolidation sideways is winding down.
Gold and silver have now crossed the 200 day moving average which means silver will now test the next level down

$58 or $53 are the next support levels

The red line is the 200 day and the yellow line is the 50 day moving average

 

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Tube Amp Building - Tweaks - Repairs / Re: First amp build

« Last post by Mongrel714 on June 09, 2026, 06:07:06 pm »

'"Im not crazy about the bias power supply switching off with the Standby switch. Should be powered in Standby like the heaters. There are better layouts out there as was mentioned. I attached the last 50 watt I assembled. Bias power is not switched off in Standby."

Ok I have studied these all day and I do see what you mean, In the fuse page I was sent too it said better to fuse on the AC side than the DC side, After diodes is DC?? is that correct? and it talks about fusing both leads, I have not seen one schematic with that fusing, I see the positive about it, but is it really a must or is it ok to just use the HT fuse already on the amp? the way you and others have it wired up? Thanks guys!