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previous: JOE Does the 59 bassman reissue sound a... -- 8/28/2000 2:10 AM

Re: reissue 59 bassman-any good?

8/28/2000 11:36 PM
Gary J	Re: reissue 59 bassman-any good? Joe, a few weeks ago, I repaired a 58 bassman. It was the first "Original" of the tweed bassmans that I had the chance to see opened up. Either Fender didn't always go by the 5F6-A schematic or someone made a few changes inside the amp and made it look original. The solder joints looked original to me. I was curious so I compared the schematic to the actual amp and these are the changes from the schematic that I found: 1) In the tone stack, the slope resistor was 100K instead of 56k like the schematic says. The bass cap was .1uf instead of .02 like the schematic. 2) In the phase inverter circuit, there was a 6.8K instead of a 10K between the 470 ohm and the presence control. 3) The presence circuit was like the 6G6 (Blonde) schematic. 25kL pot with .1uf in parallel with a 4.7K to ground instead of the 5K pot/.1uf. I have never seen the inside of a reissue, but some of the differences described above seem to be like the original amp I was looking at. I have no idea if these kinds of changes were common during production runs or not? Maybe some of the people here that have repaired other bassmans that were built on the 5F6-A chassis would know. All I know is what that amp had inside it. BTW, It sounded great! Wish it was mine!

8/28/2000 11:36 PM

Gary J

Re: reissue 59 bassman-any good?

Joe, a few weeks ago, I repaired a 58 bassman. It was the first "Original" of the tweed bassmans that I had the chance to see opened up. Either Fender didn't always go by the 5F6-A schematic or someone made a few changes inside the amp and made it look original. The solder joints looked original to me. I was curious so I compared the schematic to the actual amp and these are the changes from the schematic that I found:

1) In the tone stack, the slope resistor was 100K instead of 56k like the schematic says. The bass cap was .1uf instead of .02 like the schematic.

2) In the phase inverter circuit, there was a 6.8K instead of a 10K between the 470 ohm and the presence control.

3) The presence circuit was like the 6G6 (Blonde) schematic. 25kL pot with .1uf in parallel with a 4.7K to ground instead of the 5K pot/.1uf.

I have never seen the inside of a reissue, but some of the differences described above seem to be like the original amp I was looking at. I have no idea if these kinds of changes were common during production runs or not? Maybe some of the people here that have repaired other bassmans that were built on the 5F6-A chassis would know. All I know is what that amp had inside it. BTW, It sounded great! Wish it was mine!

Replies:

Peter S Gary, If you get 5 or 6 or... -- 8/29/2000 3:14 AM