BMW-483

Measured Voltage

13.8V

Test Date

2008.7.19

Conclusion

CH 1

CH 2

CH 3

CH 4

Output Power (RMS) @ full load (W) @ 0.5% THD     80 Hz

38W

39W

38W

38.8W

Load4ohm

Output Power (RMS) @ full load (W) @ 1% THD   1K Hz

41.5W

39.3W

40.4W

39.8W

Load4ohm

Bridged Output Power (RMS) (W) @ 1% THD   1K HZ

102W

103W

Load4ohm

Output Power (RMS) @ full load (W) @ 1% THD       1KHZ

53W

50W

51.9W

51.5W

Load2ohm

THD          (%)  @1W        

0.22%

0.21%

0.20%

0.21%

Load4ohm

THD          (%)  @ 1W     

0.28%

0.25%

0.26%

0.28%

Load2ohm

Frequency Response         (HZ)   @-3dB 1KHz

1W

20HZ∼20KHZ(±1dB)

Rated Power

20HZ∼20KHZ(±1dB)

Frequency Adjustment     (HZ)    @  1W   -3dB

Low pass

37HZ∼245HZ

 20Hz (0dB)

High pass

45HZ∼1KHZ

 5KHz (0dB)

Boost (dB) @1W

Low Pass

45 HZ

0~+8.0dB

S/N Ratio(A+)      (dB)

@ 1KHz

1W

66dB

Rated Power

80dB

Channel Separation @ rated power  (dB)

-66dB

Input Sensitivity

(Potentiometer from max to min)

Low Level

Rated Power

120mV∼1.28V

High Level

Rated Power

1.29V∼8.46V

Switch Mode  FULL/LPF/HPF

FULL / LPF / HPF

Delay time of turn on         (m)

2m

Delay time of turn off           (m)

2m

POP noise

(Yes or No)

Turn on

No

Turn off

No

Circuit Protection

Temperature   ()

Unit protect temp73     

Protect Time    __1K_HZ

10 minutes 15seconds

 2_ohm  4*51W

Speaker Short circuit

yes

Fuse     (A)

1*40A

Max Current @ load     (A)

34.3A

1KHz 2ohm THD 1%

Efficiency of Power    (%)

59.8%

1KHz 4ohm THD 1%

Treat method of heatsink appearance

Wired drawing or sandy painting

Wired drawing

Oxidize or painting

Oxidize

PCB type       Single side or double side

Single side

Cooling Method Single side cooling or double side cooling or three side cooling

Two side cooling

Power supply or connector

Gold plating or nickel plating

nickel plating

Smash wired terminal or  Phillips

Smash wired terminal

AV holder

Gold plating or nickel plating

Gold plating