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P1000S/P2500S/P3500S
4.
Preparation for BRIDGE mode
Attenuator
“0” (MAX) Effective only channel A.
Input terminal
cannon connector 2PIN-HOT/3PIN-COLD/1PIN-GND
MODE switch
BRIDGE
SUB WOOFER/LOW CUT switch
OFF (except P1000S)
YS Processing switch
OFF (except P1000S)
HPF switch
OFF (P1000S only)
Load resistor
8+8 ohms +/- 1 %
Connection for measuring: Measure the output at the point as shown below.
5.
Inspection
5.1
gain
The output voltage shall be +22.1 +/- 1 dBu when input signal is 1 kHz, -10.0 dBu.
5.2
Frequency response
Input signals are each 20 Hz, 1 kHz and 20 kHz, -10 dBu.
The output voltage shall be 0.0 +/- 0.5 dB at 20 Hz, -0.5 +/- 0.5 dB at 20 kHz compared to the 1 kHz.
5.3
Distortion Factor
Input signals are each 20 Hz and 20 kHz.
The distortion shall be less than 0.1 % when output voltage as follows.
This inspection should have been finished within 30 seconds.
5.4
Output Noise level
Shunt the input terminal (2pin-hot and 3pin-cold) with 600 ohms.
The noise level of output terminal shall be less than -60 dBu.
Next, set the input attenuator to MIN.
The noise level shall be less than -65 dBu.
6.
Preparation of Delivery
Attenuator
MIN
MODE switch
STEREO
SUB WOOFER/LOW CUT switch
OFF (except P1000S)
YS Processing switch
ON (except P1000S)
FREQUENCY
25 Hz (except P1000S)
HPF switch
OFF (P1000S only)
SPEAKERS
A+
B+
R
8 ohms
R
8 ohms
INPUT
GND
MEASURING
INSTRUMENT
P1000S
P2500S
P3500S
28.28 V
44.72 V
52.92 V