Circuit Description; Compellor Circuit Description (All Models) - Aphex COMPELLOR 300 Operating Manual

6.0 CIRCUIT DESCRIPTION
The circuits that make up the Aphex COMPELLOR Model 300 are grouped
onto several boards, including: two Audio Processing Boards, two Display
Control Boards, and a Power Supply Board for AC to DC voltage conversion
via the separate AC line transformer. The Model 301, being a mono unit, has
one less set of Audio and Display Control boards. The Model 303 has the
same number of boards as the Model 301, and also includes an Exciter board.
The following text is divided into two main sections: COMPELLOR Circuit
Description and AURAL EXICTER Circuit Description. The COMPELLOR
section applies to all models, while the AURAL EXCITER section describes
additional circuits found only in the Model 303.
6.1 COMPELLOR Circuit Description
Block diagrams of the Model 300 and Model 301 COMPELLOR ( shown in
Fig. 6-1 and Fig. 6-2) disclose the circuit elements and connections in a sim-
plified form. The COMPELLOR/AURAL EXCITER Model 303 block dia-
gram can be found in Section 6.2. Refer to these diagrams, as well as the
circuit schematics ( located at the end of the manual), during the discussion of
the COMPELLOR circuits. For the sake of brevity, only channel 1 compo-
nents are mentioned in the following discussions.
wCEP OJR•DT
OPPOIRE >ORR& DE.01111 Oemee.
IN PUT 00.11.evel, 11,W
,
UAW
ED
STACIE
>A1.
SW« GATE
LEDDELLORI
i
VIREO EAREEC ER
2112
4
O MO
DECTOR LEOPEIRUNI
!MRCS.°
2.1>
'PROCESS em.mer
LAIR LED IMES
DEC
Sr
COI MEMO«
MOE CPR.
041
L EVELPEO DE TC
TARE'
c"'"?.W.leicT
MEMO 1
.
1E
14
Dee
RAU
OUTPUT
M• GRE .0 Ul
t
p
..0
LED ID AL EN 01
NAMES ENCLOSED IN QUOTES ARE OPERATOR CONTROLS
ONE CHANNEL OF TWO IDENTICAL CHANNELS IS SHOWN
-4> AUDIO SIGNAL PATH
- CONTROL SIGNAL PATH
. AUDIO GROUND
IAA ame.. SETHI MO METES SELECT
MAR RED.ECTOr
'PREXIPME
.
Fig. 6-1. Block diagram of COMPELLOR Model 300 circuits (one channel
shown).
Circuit Description 6-1