HiFi-Active Unit by Number One


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Item Information

Subwoofer Active Module With this active module developed in Germany, excellent subwoofer speaker systems for HiFi and home cinema can be built up in connection with the dual voice coil bass speakers (1 x 4Ω or 1 x 8Ω) shown as follows as well as with all other high-quality bass speakers.Powerful active module of highest operating safety due to jumpers suitable for subwoofers (12dB slope) and full range speaker systems, continuously adjustable phase control, ground lift switch of the professional technique against hum interference, 24dB subsonic filter, automatic switch-on system and extensive protective circuits (short circuit, overheating and DC voltage overload).In case of usual modern music material, with a crossover frequency below 100Hz, the power of the SAM-1 for the bass range corresponds to a total amplifier power for the full frequency range of several hundred watts.
Packed Quantity
1 per pack
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Full Details

Output power rms 4Ω 90WRMS
Output power rms 8Ω 65WRMS
Music output power 4Ω 120WMAX
Music output power 8Ω 90WMAX
THD at rms power < 0.1%
Frequency range, full range 20Hz-20,000Hz
Frequency range, satellite -
Frequency range, subwoofer 20Hz - (var. 50-150Hz)
Output impedance 4-8Ω
Input impedance line: 24kΩ/high: 17kΩ
Max. input voltage  
  Line in 4.7V mono/ 2.3V stereo
  High power in 33V stereo
Max. power of high level input 4Ω 2 x 270WMAX
Max. power of high-level input 8Ω 2 x 135WMAX
S/N ratio > 70dB
Power consumption, no load 2.5VA
Power consumption, stand-by 0.6VA
Stand-by activation time approx. 7 min.
Power supply 230V˜/50Hz/120VA
Required mounting cutout 140x250mm
Mounting depth w/o front panel 90mm
Weight 3.3kg