I have a 1981 Fender Concert head I'd like modified to bring it into line with something close to the Dumble sound. Does anyone have ideas, suggestions or skill? I'm new to this group.
It has got a pair of National Union 350Bs in it and I swap them out from time to time with a pair of nos 7581As.
Many thanks.
Ellis
1981 Fender Concert head
Moderators: pompeiisneaks, Colossal
Re: 1981 Fender Concert head
Search on comments by Darkbluemurder and me. I don't believe anyone else here has used the series II line. I added eyelets by judiciously attaching wire crimp lugs with a pop rivet. I don't know how DBM did his.
Mine is BF clean and ODS on the distortion channel. I was able to move the hum pot to the side wall and use that rear hole for the OD Trim. My schematics are posted in the Dumble Files area. I've made a few of the suggested changes since drawing those up. hth
Mine is BF clean and ODS on the distortion channel. I was able to move the hum pot to the side wall and use that rear hole for the OD Trim. My schematics are posted in the Dumble Files area. I've made a few of the suggested changes since drawing those up. hth
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Darkbluemurder
- Posts: 584
- Joined: Tue Jan 03, 2006 7:28 pm
Re: 1981 Fender Concert head
I did it without extra eyelets. One of the preamp gain stages has a split plate load. I just moved things around a bit with the plate resistors. The additional cathode resistor/bypass cap went to one of the existing ground points (this is not really recommended but I was experimenting). I did not use the OD input trimmer. I used a fixed voltage divider instead.
The II series has one good aspect about the layout (the wires to the tone controls are short) but all in all it looks like a real rat's nest. No comparison to the fine layouts here on this site.
The II series has one good aspect about the layout (the wires to the tone controls are short) but all in all it looks like a real rat's nest. No comparison to the fine layouts here on this site.