I finally put the capacitors in and it works perfectly. It has a strong punchy low end BD on either side all the way up to clicking popping sounds. I highly recommend the modifications for a more versatile twin-t drum module.
500k pots where the 470k resistor is for pitch adjustment.
Change the capacitors: 1N to 4N7 and 10N-47N 470P-2N2 and 4N7-22N
They are the Caps connected to the 500k pots. This is to drop the pitch because the 500k pots only go from the unmodded pitch up to a click. These caps bring the Kick down to an almost unadioable range up to the popping sound (its a good sound) and the Tom down to a low BD up to the popping sound
Bring the Res to the front for "Decay" control. It lets the low BD ring longer to just a quick click. It is touchy when tuning it going into self-osc very easily.
Thanks for your help Ken.
Steve
________________________________
From: "sasami@..." <sasami@...>
To: cgs_synth@yahoogroups.com
Sent: Saturday, December 29, 2012 4:50 PM
Subject: Re: [cgs_synth] CGS18 Drum simulator pitch drop question
Double the value of the capacitor to halve the frequency = 1 oct down.
So 1n > 4n7 and 10n > 47n will give a bit over 2 octaves down for the 'kick'.
470p > 2n2 and 4n7 to 22n will give a bit over 2 octaves down for the other.
way up to a popping click. The pitch goes from the unmodified state on up
but my question is how to drop it a couple octaves.
Ken Stone sasami@... otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
[Non-text portions of this message have been removed]
500k pots where the 470k resistor is for pitch adjustment.
Change the capacitors: 1N to 4N7 and 10N-47N 470P-2N2 and 4N7-22N
They are the Caps connected to the 500k pots. This is to drop the pitch because the 500k pots only go from the unmodded pitch up to a click. These caps bring the Kick down to an almost unadioable range up to the popping sound (its a good sound) and the Tom down to a low BD up to the popping sound
Bring the Res to the front for "Decay" control. It lets the low BD ring longer to just a quick click. It is touchy when tuning it going into self-osc very easily.
Thanks for your help Ken.
Steve
________________________________
From: "sasami@..." <sasami@...>
To: cgs_synth@yahoogroups.com
Sent: Saturday, December 29, 2012 4:50 PM
Subject: Re: [cgs_synth] CGS18 Drum simulator pitch drop question
Double the value of the capacitor to halve the frequency = 1 oct down.
So 1n > 4n7 and 10n > 47n will give a bit over 2 octaves down for the 'kick'.
470p > 2n2 and 4n7 to 22n will give a bit over 2 octaves down for the other.
>Hello,500k pot from the 470k resistor which has given me a range from kick all the
>I have the twin-t drums with the res brought out to the front panel and a
way up to a popping click. The pitch goes from the unmodified state on up
but my question is how to drop it a couple octaves.
>put higher or lower capacitors to get the desired effect?
>I know there are caps that can be altered in a 1 to 10 ratio but would I
>What capacitor ratings would drop the kick about 2 octaves?__________________________________________________________
>
>Has anybody tried this modification?
>
>
>[Non-text portions of this message have been removed]
>
>
>
>------------------------------------
>
>The CGS Modular Synth home page: http://www.cgs.synth.net/
>Yahoo! Groups Links
>
>
>
>
Ken Stone sasami@... otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
[Non-text portions of this message have been removed]