Pioneer PRS-D4000F - Premier Amplifier Service Manual - Page 35
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7.3 PRODUCT DESCRIPTION
- Input Sensor Switch
The details on "Input sensor switch" is shown below. For other switches and control terminals, please refer to 05 system
GM AMP.
With this product, the RCA input terminal has the function of SP input terminal.
1. When you use it as an RCA input, select Input Sensitivity: SW: "RCA", and connect it to the product that has an RCA
output such as Main unit.
Furthermore, On/Off of amplifier is controlled by connecting the Bremote terminal of Main unit to the same terminal of
amplifier.
2. When you use it as an SP input, select Input Sensitivity: SW: "SP", and connect it to the product that does not have an
RCA output such as OEM product.
In this case, use the cable [RCA - untied cable] included with the amplifier. Connect the untied cable to SP output line of
OEM product etc. (when the speaker is already connected to the OEM product, the amplifier is connected in parallel with
the speaker).
Furthermore, as the OEM product has no Bremote terminal, the Bremote terminal of amplifier is opened.
However, with this amplifier, the circuit that controls On/Off of amplifier by detecting DC element of SP output line of OEM
product is mounted. This is called "Input Sensor".
Therefore, if there is a DC element in SP output, the Input Sensor functions.
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