Akai ACA-2664 Service Manual page 15

Client Name: AKAI
Model Name: ACA-2664
PO. Number:
Item
NO
Work normally
On-off power part No signal input
8
testing
THD10% 2Ω
THD10% 4Ω
9
Phase between channels
Gain difference Volume output ( max~max
10
between channels
11 Stability
12 Bass boost range
Low-Pass crossover
（Min.）
13
Low-Pass crossover
（Max.）
High-Pass crossover
（Min.）
14
High-Pass crossover
（Max.）
15 Power supply
16 Function testing
[Heat sink] with [power supply (+/-)
terminal]、[speaker (+/-) terminal]、
[power supply (+) terminal] with
terminal short-circuit
17
[speaker (+/-) terminal]、[VR crust]
testing
[power supply (-) terminal] with
[speaker (+/-) terminal]、[VR crust]
Note:
Power supply voltage: 14.0V
Operated by: Xiaoyulin
Capability Request / ACA-2664 2/2
Car audio amplifier capability request
Condition
Unit
Frequency kHz
Power
supply V
voltage
Work normally ---
dB
decrese 46dB )
Rated ---
1/2f 23 Hz
dB
f 45 Hz
2f 90 Hz
1/2f 15 Hz
dB
f 30 Hz
2f 60 Hz
1/2f 100 Hz
dB
f 200 Hz
2f 400 Hz
1/2f 17 Hz
dB
f 35 Hz
70 Hz
2f
2.25 KHz
1/2f
4.5 KHz dB
f
2f 9 KHz
(Rated)
Distortion:10%
W
Static
Power on delay
Remote Switch
Short circuit Protection
DC offset Protection
no sound on/off
caraudio on/off
Amplifier on/off
Temperature testing
[VR crust] 、[RCA terminal]
、[RCA terminal]
、[RCA terminal]
Approved by:
Capability request
Product specification
In-phase
≤ 3
Not self-excitation and
parasitism
Product specification
Product specification
Product specification
Product specification
Product specification
Product specification
Product specification
1/3 Max. Power 4hours testing
No noise or spark
Zhaozhigang
Serial Number :
Accomplished Q'ty:
Accomplished Date:
Sample1：
35.79
Amplifier: +/- 32.16 Preamp: +/- 16
Amplifier: +/- 26.45 Preamp: +/- 15
Amplifier: +/- 28.79 Preamp: +/- 16
Output in-phase
CH1&CH2 contra-phase / CH3&CH4 contra-phase
≤1.5
OK
CH1 & CH2: ≥ + 8 CH3 & CH4: ≥ +8
CH3 & CH4:≥+12
CH1 & CH2: ≥ + 12
CH1 & CH2: ≥ + 8 CH3 & CH4: ≥ +8
CH1 & CH2: - 0.5 CH3 & CH4: -0.5
CH1 & CH2: - 3 CH3 & CH4: -3
CH1 & CH2: - 8 CH3 & CH4: -8
CH1 & CH2: - 0.5 CH3 & CH4: -0.5
CH1 & CH2: - 3 CH3 & CH4: -3
CH1 & CH2: - 12 CH3 & CH4: -12
CH1 & CH2: - 16 CH3 & CH4: -16
CH1 & CH2: - 3 CH3 & CH4: -3
CH1 & CH2: + 1 CH3 & CH4: +1
CH3 & CH4: -7
CH1 & CH2: - 7
CH1 & CH2: - 3 CH3 & CH4: -3
CH1 & CH2: - 1 CH3 & CH4: -1
/
/
3s
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
Date: 2006/03/02