Amp/Tubes

Archived Posts from this Category

No O-rings needed for tube dampener

Posted by on 10 May 2017 | Tagged as: Amp/Tubes, Guitar Related

Over the years I have used O rings to dampen microphonic tubes. But I read online about using silicon “glue” to do the same. So I found this RTV Silicon Gasket maker and it will withstand temperatures to 650 degrees which should be fine! You can apply it in any thickness you want and it works great!

Acoustic Gig Bag

Posted by on 03 Apr 2017 | Tagged as: Amp/Tubes, Guitar Related

Got this as a gift and it’s pretty cool! Nice bag!

One of the best books on tube amp modding

Posted by on 03 Apr 2017 | Tagged as: Amp/Tubes

I love this series! I have several of them, but this book is a good beginning!


Ultimate Tone Volume 1

Posted by on 17 Nov 2015 | Tagged as: Amp/Tubes

Want to know about tube amps and how to modify them? I have this book and it is excellent! There is tons of information on tube amp circuitry, this is a must-have if you want to learn about tube amps.


One tube of amp showing basically zero current

Posted by on 11 Aug 2015 | Tagged as: Amp/Tubes

My Fender Bassman was showing zero current at idle on one of the two 6L6GC tubes. I knew it was isolated to the socket because swapping the tubes showed the same zero current on the same socket. To make a long story short, the screen resistor (470 ohm) was fried. This is a 1 watt 470 ohm resistor that goes across pins 4 and 6 on the output tubes. The real culprit was a bad tube that would draw too much current.
Replaced the screen resistor and tube and all is good.

The symptoms of the bad tube/burnt screen resistor was low output volume and extremely low/none current across the 1 ohm cathode resistor.

Tubes for dummies article

Posted by on 28 Jul 2015 | Tagged as: Amp/Tubes

Here’s an old article I wrote for beginners to understand tubes a little more – coming from a stompbox perspective:
Tubes for dummies

Vintage Fender amp schematics and layouts

Posted by on 28 Jul 2015 | Tagged as: Amp/Tubes

Looking to repair your old Fender amp?
This site has a ton of schematics and layouts and they are cleaned up.
Nice site!

Vintage Fender Amp Repair

Cool DIY “beam blockers”

Posted by on 13 Aug 2009 | Tagged as: Amp/Tubes

Very interesting use of foam to help prevent “beaming” of speakers.

Check it out.

Good thread about cathode bypass caps

Posted by on 28 Jul 2009 | Tagged as: Amp/Tubes

as used in Tube Amps. Check it out.

Here’s a great thread about PS caps

Posted by on 28 Jul 2009 | Tagged as: Amp/Tubes

A great Music Electronics Forum thread on power supply capacitors for your amp. I used the balancing resistors on my 64′ Fender amp and it has worked great!

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