Date: Tue, 8 Mar 2005 01:15:06 EST
To: analogue@hyperreal.org
From: Vco3@aol.com
Subject: ROLAND VCF/VCA/ENV circuit info
HI I thought I would post this for everyone to check out:
SH-7
VCO – discrete
LP VCF – uses 4 CA3080 transconductance amps, similar to the crumar DS-2
VCF design.
VCA – CA3080
SH-5
VCO – discrete (uA726, 1458, 741, 301, CA3130, etc.
SH-09
VCO – discrete (uA726, 4558, TL082, etc.)
VCF – 4 ba662s (similar to system-100m)
VCA – ba662
ENV – discrete
SH-3
VCO – discrete
VCF – transistor ladder
VCA – CA3080
ENV – discrete
SH-101
VCO – CEM3340
LP VCF – IR3109 transconductance amp block
VCA – ba662 transconductance amp block
system-700
VCO – discrete (uA726, LM301A, LM311, LF356A, 1458, etc.)
LP VCF – uses 4 CA3080s, similar to the crumar DS-2 VCF design.
MM VCF – uses a fairly standard multimode design similar to the oberheim
SEMs (741s, CA3080s).
VCA – CA3080
ENV – discrete
system 100
VCO – discrete (uA726, CA1458, CA3130, 301AH)
LP VCF – transistor ladder design (sort of). (probably more of a diode
ladder since all transistor collectors are left unconnected.) it’s
different from the TB-303 transistor ladder design.
VCA – CA3080 (selected C), TA7136P
ENV – discrete
system-100m (similar to many of the 700 designs in many ways.)
VCO – discrete (similar to jupiter-8)
LP VCF – ba662 transconductance amp block (basically substituted for the
system 700 design’s CA3080s)
VCA – ba662 transconductance amp block
ENV – discrete
Jupiter-8
VCO – discrete (4558, 3046, TL080, etc.)
LP VCF – IR3109 transconductance amp block
VCA – ba662 transconductance amp block
ENV – IR3R01
Jupiter-6
VCO – CEM 3340
MM VCF – IR3109 transconductance amp block
VCA – CEM3360
ENV – software
cya analoguejeff
Date: Mon, 7 Mar 2005 22:24:09 +0100
To: ,
From: “Damir Kristijan Rogina”
Subject: Re: [AH] ROLAND VCF/VCA/ENV circuit info
Message-ID:
SH 2
VCO (ua 726)
VCF – 4 ba662s (similar to system-100m)
VCA – ba662
ENV – discrete
Promars and Jupiter 4
VCO (ua 726)
VCF – 4 ba662s (similar to system-100m) – last revision had IR3109
VCA – ba662
ENV – discrete
MC 202 same as 101