Need help: Framus Dragon to Cobra specs conversion

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MikeO
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Need help: Framus Dragon to Cobra specs conversion

Post by MikeO »

The Framus Dragon and Cobra are essentially the same amp with a few different resistor and capacitor values to account for the difference in voicing and gain. I have a Framus Dragon that I want to fully convert over to Cobra specs, I already had the mid notch switches added and a resistor changed to get Cobra level gain years ago, but didn't get the capacitors swapped to change the voicing.

I know that I have seen a doc showing which capacitors and resistors to swap out for what values before, but can't for the life of me find a copy at the moment. Anyone have a copy, or know where I can find one?
Amps: 5150 (w/bias mod), 5150 II, PRS MT-15, FJA PV XXX, Framus Dragon, FJA PV Penta, PV Rockmaster-->Marshall 9100, PV Ultra 120
Cabs: 3 Marshall 1960B, Laney GH412, Avatar 2x15, PV XXX 4x12, Bogner OS 2x12.
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Zozobra
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Re: Need help: Framus Dragon to Cobra specs conversion

Post by Zozobra »

You can find the schematics for each amp here: http://www.warwickbass.com/en/Framus--- ... nt_site_id

the main caps you want to change are the ones on the mid control. The cobra uses 22n caps and the dragon 10n. The dragon has a few slight differences to the james/bax tonestack too but the meat of the difference is in the mid scoop.
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MikeO
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Posts: 888
Joined: Tue Jan 22, 2013 12:21 pm

Re: Need help: Framus Dragon to Cobra specs conversion

Post by MikeO »

Zozobra wrote:You can find the schematics for each amp here: http://www.warwickbass.com/en/Framus--- ... nt_site_id

the main caps you want to change are the ones on the mid control. The cobra uses 22n caps and the dragon 10n. The dragon has a few slight differences to the james/bax tonestack too but the meat of the difference is in the mid scoop.


Thanks! :thu:
Amps: 5150 (w/bias mod), 5150 II, PRS MT-15, FJA PV XXX, Framus Dragon, FJA PV Penta, PV Rockmaster-->Marshall 9100, PV Ultra 120
Cabs: 3 Marshall 1960B, Laney GH412, Avatar 2x15, PV XXX 4x12, Bogner OS 2x12.
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