Category Archives: Guitar Amps

“Shadow” the new Little Barrie album is now out.

By Frank | Published: May 29, 2014

Check out the new Little Barrie album “Shadow”. Barrie used a JPF Regent combo and a Fender Blonde Tolex Bassman for all the guitars on the album. You can see (and hear!!) Barrie demoing the combo on our Youtube channel.      

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Fender AB763-style Valve Guitar Pre-amp Custom Build

By Frank | Published: May 21, 2014

We were asked to make a valve pre-amp for a customer who wanted a simple clean Fender-style pre-amp, mainly for playing jazz. Here are some of the parts before the build.     The PCB is a charge pump circuit from Tube Town that boosts the incoming voltage (12VDC in this case) to a user-adjustable […]

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New JPF Sound Sample and “Rockumentary”

By Frank | Published: December 9, 2013

We now have a “rockumentary” on Youtube where I go into some detail about the design and construction of JPF amps, and there is also some footage of David PAge demonstrating the a SC15 combination. These can be accessed via our media page.

Also posted in Amp building, JPF Amps, Sir Charles | Comments closed

Fender Blues Junior Guitar Amp Repair

By Frank | Published: August 9, 2013

I see quite a few Fender Blues Juniors in the workshop for repair; not that they are unusually unreliable, it’s just there are a lot of them out there! However you do see many of the same faults occurring, so here’s some photos highlighting these from a recent repair. Firstly, like many amps that use […]

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Aguilar AG500 Bass Amp Repair: Man vs SMD Round 1

By Frank | Published: July 31, 2013

Here’s a repair I conducted on a more modern amp, a Aguilar AG500 bass guitar amplifier, where we were dealing with the dreaded SMDs. This amp is quite an interesting design as it has a class D output stage, however unlike most class D amps it’s not ultra light. It employs a linear power supply […]

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VOX Night Train Guitar Amplifier Repair

By Frank | Published: June 17, 2013

Here’s some photo’s from a recent repair of a VOX Night Train amplifier. The amplifier was producing no sound. Curiously the HT voltage on the first pre-amp valve was only 95 VDC, way below spec. I removed the valves and the HT on the first valve stage was still only 95 VDC. On further investigation […]

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Peavey Classic 30 Guitar Amplifier Repair

By Frank | Published: May 30, 2013

Here are some photos from the inside of a Peavey Classic 30 that I recently repaired. The amp was brought in making a ton of crackling noises and was cutting out intermittently. It had been looked at previously by someone who had concluded that the PCB had absorbed moisture (not possible), and had tried to […]

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More safety earthing issues. VOX AC30 and Yamaha PA

By Frank | Published: April 10, 2013

A couple of safety earthing issues I’ve seen over the last few weeks. Here’s the safety earth from a recent repair on a JMI era VOX AC30. Suffice to say, if you were going to solder the safety earth to something, then the chassis might have been a better bet…… OK, that was a vintage […]

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Brighton Guitar Workshop website now active

By Frank | Published: March 21, 2013

I’ve posted previously that a friend of mine, Nathan, is building and repairing guitars in Brighton. Nathan’s now got his web-site, Brighton Guitar Workshop,  up and running so you can check out his work.    

Also posted in Amp repair, Bass Amps, Effects pedal, Effects repair, Guitar repair, JPF Amps, Vintage guitars | Comments closed

JPF 2 x 10″ 15W combo in action with Tom Robinson

By Frank | Published: March 3, 2013

Here’s some Youtube footage of one of our combination amps in action at a recent Tom Robinson gig in Ypres. The amp is a 15W 2 x 10″ Sir Charles 15W combination. Incidentally, the speakers are Tayden True Brits.

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