Inter-M DSA-100D - Manual (Page 9)

DIGITAL SR AMPLIFIER
7 DSA-100D/DV
Bridge connection: wire the “hot”/positive lead to the “+” terminal of CH1, the “common”/negative lead to
the “-” terminal of CH2.
※ NOTE : Before connecting speakers to the unit, be sure to disconnect the AC power cable. Make certain
that the total impedance is not less than the rated impedance indicated.
Do not put the speaker cable close to input signal cable.
4. VCA (VOLTAGE CONTROLLED AMPLIFIER) TERMINAL (Only DSA-100DV)
When the potentiometer is connected, it allows for remote control of the master volume level.
CH1 remote volume : connect into "V1, C1, G" with 10kΩ volume (B curve type)
CH2 remote volume : connect into "V2, C2, G" with 10kΩ volume (B curve type)
Connections of VCA control terminal. (see below picture)
* VCA (VOLTAGE CONTROL AMPLIFIER)
Voltage-controlled amplifier is an electronic amplifier that varies its gain depending on a control voltage.
These two terminals provide connection for an external potentiometer. When the potentiometer is
connected, it allows for remote control of the master volume level without sound distortion.
※ NOTE : Note that individual input volume control positions limit the maximum output level adjustable with
the remote volume control
If VCA control unit is seperated from the unit, it goes back to level of front panel volume control
so do not separate the VCA control unit while it is in use.
5. POWER MODE SELECTION SWITCH
- There are 3 selectable power mode switch. (ON/REMOTE/OFF)
- Switches to ON : Power ON
- Switches to OFF : Power OFF
- Switches to REMOTE and Remote power connector is triggerd : Power ON
- Switch to REMOTE and Remote power connector is not triggerd : Power OFF
6. REMOTE POWER CONNECTOR
Power Mode switch is
selects as REMOTE and Remote power connector is triggerd : Power ON
selects as REMOTE and Remote power connector is not triggerd : Power OFF
INPUT 1
AC INPUT
SPEAKER OUT
REMOTE
POWER
VCA CONTROL
2CH BRIDGE
V1 C1 G C2 V2
MODE
ON OFF
HPF
+4dBu -20dBu
GAIN
OFF
REMOTE
ON
POWER
CLASS 2 WIRING G
INPUT 2
G
CH 2 4Ω 4Ω
8Ω
CH 1
BRIDGE