vca with more than unity gain

vqlk · Post by **vqlk** » Fri Sep 27, 2013 9:12 am

cheapest?

PhineasFreak · Post by **PhineasFreak** » Fri Sep 27, 2013 9:15 am

put a Doepfer a-183-3 downstream of the vca?

square_wave · Post by **square_wave** » Fri Sep 27, 2013 10:02 am

Doepfer a-132-3.

From the website: "For the new version with SSM2164 the amplification is not limited to 1. If the control voltage is increased even a higher amplification than 1 is possible... Amplification "1" is obtained at about position "8" (i.e. 3 o'clock position) of the manual control "Gain" for both linear and exponential mode."

vqlk · Post by **vqlk** » Fri Sep 27, 2013 10:12 am

exponential is desired.

L-1 · Post by **L-1** » Fri Sep 27, 2013 12:54 pm

Will test this weekend how much gain can give my Quad VCA.
Can assembly 'special version' just for you.
But it's not very cheap - $350, but HQ.
http://l-1.su/QuadVCA.html

Contact me if you are interested.

vqlk · Post by **vqlk** » Fri Sep 27, 2013 1:14 pm

i don't think i can afford that right now, sorry.

i was looking into buying an L1 vca from somewhere else... i'm right that it won't self oscillate if patched into itself?

does the wiard amplify?

L-1 · Post by **L-1** » Fri Sep 27, 2013 1:30 pm

yes, you are right, it doesn't oscillate.
Changng one resistor per vca can add gain.

defenestration · Post by **defenestration** » Fri Sep 27, 2013 2:28 pm

http://www.analoguehaven.com/brokensilicon/gainsburg/

not cheap but I am curious about this one

nothings · Post by **nothings** » Fri Oct 04, 2013 4:32 pm

PhineasFreak wrote:put a Doepfer a-183-3 downstream of the vca?

Thanks, I just came here looking for the non-vca version of this, and the a-183-3 is exactly what I was looking for. (Well, now that I know what to look for, maybe the ADDAC202 is closer, but also way more spendy.)

I had to fake it the other night by feeding my signal into a buffered mult, then summing the ouputs of that with a unity mixer...

kimu · Post by **kimu** » Fri Oct 04, 2013 4:42 pm

cvtools offers 2x gain

DonKartofflo · Post by **DonKartofflo** » Fri Oct 04, 2013 8:58 pm

wmd mmvca has a gain of 2 max

analogPedagog · Post by **analogPedagog** » Fri Oct 04, 2013 11:35 pm

The PTG can add up to ~44.5dB using both the internal gain amps and the VCA. That's ~x169 gain! One gain amp and VCA will give you up to 22dB or x13 gain. Totally adjustable.

vqlk · Post by **vqlk** » Mon Nov 25, 2013 8:09 pm

basically (and i'm not sure i explained but) i was looking to make some feedback loops inside the synthesizer. i have like the evin and stilton but it kept occurring to me that i was missing out by limiting myself to pedals. so i have the pittsurgh inout, m3, and just use a bog standard vca if i want to modulate the scream... i'm fairly satisfied with the results, but please do stop me if you have anyrthing to add

Kodama · Post by **Kodama** » Tue Nov 26, 2013 1:24 am

A133 does 2.5x in bipolar times 2!

warnton · Post by **warnton** » Tue Nov 26, 2013 2:01 am

defenestration wrote:http://www.analoguehaven.com/brokensilicon/gainsburg/

not cheap but I am curious about this one

if you want to scream, it really SCREAMS

vqlk · Post by **vqlk** » Tue Nov 26, 2013 2:05 am

Kodama wrote:A133 does 2.5x in bipolar times 2!

FTR i didn't get anything from it, sadly...

unease · Post by **unease** » Tue Nov 26, 2013 3:48 am

Circuit Abbey Gozinta is a dual amplifier and will give you up to 36dB of gain. I guess it is similar to the ADDAC202 but with more gain and cheaper. Its not red though... :-)

--------->

vqlk · Post by **vqlk** » Tue Nov 26, 2013 4:54 am

anyone willing to demonstrate its no input feedback range??

MUFF WIGGLER

MUFF WIGGLER

vca with more than unity gain

vca with more than unity gain