Marshall Artiste with low P/T secondary and low output

[christarak]

A pre-emptive thanks to my learned colleagues.

This is a problem with a Marshall Artiste 50w from about 1978.

It came in with...

[Ben N]

I am switching the power transformer in my SF Vibro Champ to an export-style PT, switchable 120v/220v/240v primary. The original fuse is a 250v 1A slow blow....

[bobloblaws]

I have a small amp here which has no power transformer. From what I have read this is unsafe and it is recommended to use an isolation transformer. I have...

[dannythetrucker]

I'm working on a guitar amp (my first build) with 2-6SN7 preamp tubes, single 6L6GB power tube, a VR-150, and GZ34 rectifier.

I had planned...

[slidincharlie (Carlo P)]

G'day all!
The amp: my '79 Fender Vibrolux Reverb with international power tranny (100 to 260 VAC selector).
Foreword:
a few years ago...

[Skoked]

I am trying to find a replacement power transformer for Kustom "The Defender" 50w 1x12 amp.

I can get one from the manufacturer for...

[Billyaxe]

Hello, I've acquired a replacement PT for my B-15N but the wire colors don't match the existing PT.
The replacement acquired on ebay from DBHarmony...

[roadking]

Hi Guys... I'm new here... so be gentle :-)

I have a RK II which is USA version currently working ( PT installed is 561142) with a dropdown transformer...

[roadking]

Hi I'm new here so be gentle :-)

I have a (USA Version) road king II that is currently being used with a drop down external transformer to...

[ScarTube]

Hello people,


i´me building the Champ 5C1 schematic. Its my fifth DIY-amp project and I really love it. Everything works and sound...

[Mr Johnny Birchwood]

Hey guys, I'm experimenting with a huge old GE transformer i found in a junk pile. The tranny puts out 480VAC and is rated at 250VA. No center tap on the...

[Mr Johnny Birchwood]

Building a 5E3 clone on an old Hammond 6v6 push-pull chassis. Chassis is unidentified, just using the steel box and the power transformer. No ID markings...

[MitchK]

Hey everyone, its been a long time since I've posted here but I have a question!

A friend brought over his dual rectifier so we could do some...

[TomCarlos]

Ok... time to understand PT Specs...

I have a PT for a Fender Amp, part 036958. This is a common PT and there are several replacement options....

[AppleScrappler]

The PT in my 5e3 is a Heyboer and offers two center taps for the high voltage. Just wondering what the difference is. the specs are as follows:
...

[elushi]

I got a problem with my amp. It's not a known brand, because it's from an old Argentinian maker. It’s a very very simple amp: SS rectifier, a 12AX7 in the...

[Tiago]

Hello,
I'm just about to replace the power transformer on a JCM 900 that is blowing fuses.
It's a 100 watt Model (4102).
Can someone...

[motzu]

Hello,

I'm thinking about using Hammond power transformers for my next build (specifically, I'm looking at the 291AEX and 291BEX models, spec...

[ERB]

Type AP
Model #DR-504
Serial #441

I purchased this head from a buddy who worked at American Music Service Department (Fremont,...

[mfwalker1]

Hi.
I suspect the answer is a great big NO, but I thought I ask.
I have a friend who's bought an American amp on eBay for use here in Australia....

[Groover]

I want to put the power amp section of my MM Bass amp into my Vibro-Champ chassis to make it a 12 watt VC, and convert the MM Bass to a 5F2 single ended,...