eh là bas ma
Well-known member
Just finished a Timmy (earlier version) circuit on perfboard.
I did it to practice on perfboard and join the Zendrive i built two or three weeks ago, on veroboard.
I read it's a good combo, I tend to agree, but one of them needs to have the gain control down to be musical. I guess the idea of the combo is to let the first drive shape the sound for the second one.
Zendrive can sound very raw and dirty with a noticeable mids hump, Timmy has a bass control, clipping options, and sound very polished and refined, according to the IC you're using. Mids are also increased but quite less than in the Zendrive. I guess the order is clear : Zendrive first, unless i want something unpolished with mids...
I changed all the pot values on the Timmy, and yet it sounds right, they're effective through the whole rotation :
Treble, Bass = C100k instead of C50K; Drive = A1M instead of A500k; Volume =A50k instead of A25k.
I've been testing RC4558P, TL72IP, MC1458 and NE5532P in Timmy'circuit. The final duo was MC1458 and NE5532, I kept MC1458...
On Zendrive, I am using NE5532.
I also substitute the pot I didn't have for the closest higher value. Everything sounds fine, especially the gain knob wich has much more range than the original unit, I suppose : B1M instead of B500K.
Based on these projects :
effectslayouts.blogspot.com
effectslayouts.blogspot.com
Both boxes have acrylic artworks, coated with acrylic varnish.
Quick question : When I double a pot value, am I right to consider the new pot set at half rotation sounds like the standard one set fully CW ? So on a 50k reverse log pot replaced by a 100k (rev log), when the 100k is set at 12', it's like when a 50k pot is set fully CW ?
I did it to practice on perfboard and join the Zendrive i built two or three weeks ago, on veroboard.
I read it's a good combo, I tend to agree, but one of them needs to have the gain control down to be musical. I guess the idea of the combo is to let the first drive shape the sound for the second one.
Zendrive can sound very raw and dirty with a noticeable mids hump, Timmy has a bass control, clipping options, and sound very polished and refined, according to the IC you're using. Mids are also increased but quite less than in the Zendrive. I guess the order is clear : Zendrive first, unless i want something unpolished with mids...
I changed all the pot values on the Timmy, and yet it sounds right, they're effective through the whole rotation :
Treble, Bass = C100k instead of C50K; Drive = A1M instead of A500k; Volume =A50k instead of A25k.
I've been testing RC4558P, TL72IP, MC1458 and NE5532P in Timmy'circuit. The final duo was MC1458 and NE5532, I kept MC1458...
On Zendrive, I am using NE5532.
I also substitute the pot I didn't have for the closest higher value. Everything sounds fine, especially the gain knob wich has much more range than the original unit, I suppose : B1M instead of B500K.
Based on these projects :
Lovepedal/Hermida Audio Zendrive
Got a request for this one. The Zendrive is a low-to-medium gain overdrive, delivering blues to jazz tones. It has an interesting clipping s...
effectslayouts.blogspot.com
Paul Cochrane's Timmy
Often cloned without giving credit to where credit is due (cough*lovepedal*cough), the Timmy is one of the most sought after overdrives on t...
effectslayouts.blogspot.com
Both boxes have acrylic artworks, coated with acrylic varnish.
Quick question : When I double a pot value, am I right to consider the new pot set at half rotation sounds like the standard one set fully CW ? So on a 50k reverse log pot replaced by a 100k (rev log), when the 100k is set at 12', it's like when a 50k pot is set fully CW ?
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