Alphard Machete M15D1 Sport [7/20] Bass reflex box
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Alphard Machete M15D1 Sport [7/20] Bass reflex box

Alphard Machete M12D4 [7/20] Bass reflex box
SELECTION OF THE SPEAKER CABLE DIAMETER
Bass reflex box
Д
Ш
В
The recommended amount of liters
Port area, cm²
Port length, cm.
Hz setting
50
90
150 200
62 40
35 35
Parameters/Model
M12 SPORT M15 SPORT
W*H*L = body volume
4. RECOMMENDED ENCLOSURE PARAMETERS
The correct choice of the amplifier, its settings and design prolong the lifetime of your subwoofer. You should select an
amplifier with a nominal power below the nominal power of the subwoofer. Proper coordination of the head unit (HU) with the
amplifier will provide a clean, undistorted signal fed to the subwoofer, which prevents overheating and voice coil damage. Like
any other speaker the subwoofer has moving and stationary parts. We strongly recommend that the moving parts of the
subwoofer should be warmed up at the beginning of operation. Be extra careful when warming up the parts. Warm up the
subwoofer using musical material for 40 hours on medium power. If, during operation at maximum volume you feel strange
smell, you should make the volume of the subwoofer low and cool the device down at a low volume.
Recommended settings of the amplifier and HU: Volume of HU should not exceed 80%. The amplifier sensitivity is 50%,
subsonic filter frequency (Subsonic) is 5 Hz below the port settings. For example, if you configure the port at 30 Hz, Subsonic is
should be 25 Hz. The low pass filter LPF (the filter that cuts all frequencies above those set for the filter) 63-80 Hz, bassboost to 0.
5. HOW TO USE
EN
7
Use the table below to select the desired diameter based on the length and the power consumption.
20 000
25 000
15 000
10 000
8000
6000
4000
2000
1000
500
250
100
0-1 1-2 2-3 3-4 4-5 5-6 6-7
Cable length (m)
Power consumption (W)
7-8
16,8
8,37
5,26
2,08
5
8
10
14
A.W.G
mm²
Size

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