SCR2A Speaker Control Relay Installation
Description
The SCR2A Speaker Control Relay is a switching device to be used with the Mclntosh C34V Audio/Video Control Center or any of the Mclntosh Preamplifiers: C28, C29, C30, C32 or C33. The SCR2A will do the following:
1.Switch on and off two sets of loudspeaker systems.
2.Switch on and off two high power 120VAC outlets for a total of 1800 watts.
The SCR2A is similar in function to the SCR3, but the devices use different control circuits and can not be used interchangeably. The SCR2A supersedes the SCR1 and SCR2.
Connections
SCR2A SPEAKER CONTROL RELAY
FROM POWER AMPLIFIER
C L C R
TO SPEAKERS 1
C L C R
1.Connect SPEAKER 1 terminals on the SCR2A to loudspeaker system 1 (the main speakers). Make sure the speaker polarity and the right and left channels are connected correctly.
TO SPEAKERS 2
C L C R
2.Connect SPEAKER 2 terminals to loudspeaker system 2 (the remote speakers).
3.Connect POWER AMPLIFIER terminals to the output of the power amplifier, making sure polarity and channels are connected correctly. When connecting to the power
amplifier, be aware that speaker systems 1 and 2 are in parallel when both systems are playing. The impedance seen by the power amplifier is the impedance of the speakers in parallel. For example, two 8 ohm speaker systems will present a load of 4 ohms.
4.Plug the heavy AC line cord on the SCR2 directly into a wall outlet. Use the two AC outlets on the SCR2A to supply AC power to amplifiers or to other equipment requiring heavy power.
5.Connect the SCR2A control cable to the SCR connector on the Control Center or Preamplifier.
Operation
Loudspeakers may be turned on and off by touching SPEAKERS 1 and 2 pushbuttons on the Control Center or Preamplifier.
Power to the SCR2A outlets is turned on and off by the POWER switch on the Control Center or Preamplifier.
MclNTOSH LABORATORY INC. |
2 Chambers Street |
Binghamton, NY 13903 |
039685 |
BE122004
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