Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: TubeGeek on August 12, 2016, 04:48:41 pm

Title: Custom Shop Vibro-King on the bench
Post by: TubeGeek on August 12, 2016, 04:48:41 pm

Dead reverb.


Found disconnected wire on reverb tank rca connector.  Simple fix.


Thought I'd share pics of this beast as it's not common.

Title: Re: Custom Shop Vibro-King on the bench
Post by: eleventeen on August 12, 2016, 09:15:45 pm

That's quite the giant power transformer for a 40-watt Fender amp, looks substantially bigger than even a Twin.

Title: Re: Custom Shop Vibro-King on the bench
Post by: mresistor on August 16, 2016, 06:47:29 pm

what year is that amp? 1993?  eleventeen  I think these are 60w amps.

Title: Re: Custom Shop Vibro-King on the bench
Post by: TubeGeek on August 17, 2016, 09:37:58 am

The schematic says 1993.


The first thing I noticed were the huge PT. 

Title: Re: Custom Shop Vibro-King on the bench
Post by: mresistor on August 17, 2016, 10:01:21 am

The PT looks like a Hammond 290SX  which they list as a replacement for Fender Vibro King.      http://www.hammondmfg.com/pdf/EDB290SX.pdf (http://www.hammondmfg.com/pdf/EDB290SX.pdf)


(http://www.hammondmfg.com/jpeg2/290SX_B.jpg)

Title: Re: Custom Shop Vibro-King on the bench
Post by: mresistor on August 17, 2016, 10:05:18 am

It also looks like they closely studied CBS Silverface wiring methods..    :l2: