Akai ACA-2624, Service Manual

Page: 15 / 16

NO Item Unit
Car audio amplifier capability request
Client Name: AKAI Serial Number :
Condition Capability request
Sample1 ：
Model Name: ACA-2624 Accomplished Q'ty:
PO. Number:
Accomplished Date:
Work normally Frequency kHz
No signal input Amplifier: ±25.95 Preamp: +/- 16
THD10% 2 Ω Amplifier: ±23.12 Preamp: +/- 15
THD10% 4 Ω Amplifier: ±23.75 Preamp: +/- 16
1/2f 23 Hz
CH1 & CH2: ≥ + 8 CH3 & CH4: ≥ +8
f 45 Hz
CH1 & CH2: ≥ + 12
CH3 & CH4:
≥
+12
2f 90 Hz CH1 & CH2:
≥
+ 8 CH3 & CH4:
≥
+8
1/2f 15 Hz CH1 & CH2: - 0.5 CH3 & CH4: -0.5
f 30 Hz CH1 & CH2: - 3 CH3 & CH4: -3
2f 60 Hz CH1 & CH2: - 8 CH3 & CH4: -8
1/2f 100 Hz CH1 & CH2: - 0.5 CH3 & CH4: -0.5
f 200 Hz CH1 & CH2: - 3 CH3 & CH4: -3
2f 400 Hz CH1 & CH2: - 12 CH3 & CH4: -12
1/2f 17 Hz CH1 & CH2: - 16 CH3 & CH4: -16
f 35 Hz CH1 & CH2: - 3 CH3 & CH4: -3
2f 70 Hz CH1 & CH2: + 1 CH3 & CH4: +1
1/2f 2.25 KHz CH1 & CH2: - 7 CH3 & CH4: -7
f 4.5 KHz CH1 & CH2: - 3 CH3 & CH4: -3
2f 9 KHz CH1 & CH2: - 1 CH3 & CH4: -1
Operated by: Xiaoyulin Approved by: Zhaozhigang
8
On-off power part
testing
Product specification
37.02
Power
supply
voltage
V
Output in-phase
CH1&CH2 contra-phase / CH3&CH4 contra-phase
10
Gain difference
between channels
Volume output ( max~max
decrese 46dB )
dB
≤ 3 ≤ 1.5
9
Phase between channels
In-phase Work normally ---
Not self-excitation and
parasitism
OK
12 Bass boost range dB Product specification
11 Stability Rated ---
Low-Pass crossover
（
Max.
）
dB Product specification
13
Low-Pass crossover
（ Min. ）
dB Product specification
High-Pass crossover
（ Max. ）
dB Product specification
14
High-Pass crossover
（
Min.
）
dB Product specification
15 Power supply
(Rated)
Distortion:10%
W Product specification
/
Static /
16 Function testing
Power on delay
Product specification DC offset Protection
Amplifier on/off
3s
Remote Switch OK
Short circuit Protection OK
OK
no sound on/off OK
caraudio on/off OK
OK
Temperature testing 1/3 Max. Power 4hours testing OK
17
terminal short-circuit
testing
[Heat sink] with [power supply (+/-)
terminal] 、 [speaker (+/-) terminal] 、
[VR crust] 、 [RCA terminal]
No noise or spark
OK
[power supply (+) terminal] with
[speaker (+/-) terminal] 、 [VR crust]
、 [RCA terminal]
OK
[power supply (-) terminal] with
[speaker (+/-) terminal] 、 [VR crust]
、 [RCA terminal]
OK
Note:
Power supply voltage: 14.0V
Date: 2006/03/01
Capability Request / ACA-2624 2/2