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Old 26th January 2006, 08:24 PM   #1
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Default need suggestion on graphic eq for bass

hi , i just found boss ge7 ( 7 bands graphic eq for guitar ) i wanna use it for my bass , and i need to change the frqs to these :

40-120-400-500-800-4k-10k

so how can i change the caps to give me these freqs ?
thnx a lot ...

( the ge7 circuit s here : http://web.tiscali.it/boxsmt2clone20...k_boss_ge7.htm )
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Old 26th January 2006, 09:15 PM   #2
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http://sound.westhost.com/project64.htm
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Old 27th January 2006, 06:22 AM   #3
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hi .. i want to change these ge7 freqs to bass guitar range .. i review the Rod Eliot project 64 , but i couldn t understand which values i should change .. anybody help ?
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Old 27th January 2006, 08:47 AM   #4
sreten is offline sreten  United Kingdom
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Hi,

as bass is tuned an octave below a guitar the simplest
thing to do is double the value of all the capacitors used
for EQ. You also need to double any coupling capacitors.

/sreten.
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Old 27th January 2006, 09:14 AM   #5
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sorry i m so new in electronic :P ..
u mean i should double the value of c1-c2-c4-c5-c7-c9-c10 ?? wat bout c3-c15-c6-c14-c8-c10 ??
and which one s couplin cap ?
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Old 27th January 2006, 10:25 AM   #6
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There seems no point in changing it at all?, why not just buy a bass one?, check the new (very cheap!) Behringer pedal Here.
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Old 27th January 2006, 11:20 AM   #7
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cuz i cant find any bass effetct pedal here ... unfortunately ...
u can find any guitar effect , anything u want bout guitar ... but lack of bass stuffs , ...
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Old 27th January 2006, 11:32 AM   #8
sreten is offline sreten  United Kingdom
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Quote:
Originally posted by Ahmad_tbp
sorry i m so new in electronic :P ..
u mean i should double the value of c1-c2-c4-c5-c7-c9-c10 ?? wat bout c3-c15-c6-c14-c8-c10 ??
and which one s couplin cap ?
Hmm.....

asking this question perhaps you should just buy a cheap pedal,
its a lot easier, and it will work.
I suspect the results of your efforts might be a very dead pedal.

But you can safely ~ double every capacitor in the top half of the circuit.
(except the the low noise mod capacitor)

You can reuse most capacitors somewhere else e.g. C8 becomes C14.

/sreten.
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Old 28th January 2006, 06:44 AM   #9
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u mean tantanium caps , right ? :P
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