Watkins Joker

The Story on this amp

I have been looking for this amp for a while and one day it appeared on Ebay. Unfortunately it was in Australia which meant heavy shipping costs. Then I found out that there were some heavy bids after this amp. But let me tell you, the name of this amp lives up to itself. I paid top dollar for it and it was a Joke when I received it . OK, I knew it wasn¹t working when I bought it but how bad was another story or should I say joke. This was one basket case. Nothing worked, I mean nothing. The first thing I had to find was some history on the amp it self. I went to the Watkins site and to some others that I knew that had these amps at one time. I got in touch with Charlie Watkins - the man who invented this amp. He had a friend of his that owned one and lived in LA. lucky he had the printout for the amp, but of course it was not very clear. All the listings were unclear and all the resistors values were gone. The cap listings were sort of there. This was going to become one big guessing game.

The Journey

I needed to find the original mains transformer and original output tranny. Well that was almost impossible.  So I had the mains made to spec. At least I thought I was. I had found a company that said that they could. I gave them the exact measurements and current specs. Well I almost got that. When I had received the transformer after waiting 5 months I didn’t get what I had ordered. It was very good but not what I had ordered. At that time I didn’t know that there were other amps that Watkins used that had the same output transformer. I now have the original output tranny. Just to get going on this I had acquired an output tranny for the AC30.

Now the fun!

That’s right nothing worked. I had no idea what was going on.

Now to find the problems. . .

Two very good email friends of mine were kind enough to guide me through this.  Tim Fletcher has two of these amps in non-working condition.  He was able to send me lots of pictures of the amp so I could see what was going on in there and what the original parts would look like – well, sort of. That was such a good help to me.

Alan Vale also guided me through the electronics of the amp and gave me hints on what to look for. Another great help was Rich Johnson from New York Music in L.I. N.Y. Mitch Colby from Marshall/Korg USA also helped out as well.  At first I thought the problem was the wrong output tranny. Mitch let me know one morning that the problem was not the tranny so that directed me to look elsewhere in the amp. That’s where Rich came in also.

I decided to check over all the parts in the pre amp section.  I had seen that some of the caps where changed and replaced with incorrect values. I decided to replace them with the correct ones, checked the other hunts caps that were in there to find they were not good. Well as soon as I changed them, wow, the power was back. What a great sound.

The tremolo was OK.  It did sound better with newer caps. The Copycat was not recording though. To make another long story short I noticed that a dropping resistor was changed. That’s right it was the wrong resistor in there.  It needed a 3.3k resistor not the 330k that it was replaced with and like magic the Copycat worked - it was now receiving the correct voltage. I got the heads aligned properly and now the tape delay section sounds great.

Was it worth it? For me, yes. For you, who knows.

I was just told by Charlie Watkins people are asking for this amp again. Oh, there were only 400 made.

 

 
   


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