morca

I have very good experience whit Hypex,a Company from Holland http://www.hypex.nl/

I have these 2 plate,s on 2 JL audio 13W3v3 http://www.hypex.nl/product/2012-11-23-13-44-01/2012-11-23-13-44-19/ds4-0.html

DS4.0 400Watt Class D subwoofer plate amplifier with active filtering. Key features are:

Specifications

GENERAL FEATURES:
- High efficiency Class D design
- Active subwoofer amplifier


TECHNICAL DATA:
Continuous output power (8 Ohm): 210 Watts (+0, -0.5dB)
Continuous output power (4 Ohm): 400 Watts (+0, -0.5dB)
Subsonic-filter: 12Hz / -3dB, 24dB/Octave
Phase: 0° - 180°, 180° - 360°
Crossover frequency subwoofer: 30Hz - 120Hz, 18dB/Octave
Bassboost: 20Hz - 50Hz
Bassboost level: 0dB - +6dB
Damping factor: 1000
Protection: Output shortcut / DC-error
Crossover filtering: Linkwitz-Riley, 18dB/Octave
Input impedance RCA: 10kOhm
Input impedance high level: 1kOhm
230/115Vac switchable

Also available for a little more power

DS8.0 800Watt Class D subwoofer plate amplifier with active filtering.

Specifications

GENERAL FEATURES:
- High efficiency Class D design
- Active subwoofer amplifier


TECHNICAL DATA:
Continuous output power (8 Ohm): 530 Watts (+0, -0.5dB)
Continuous output power (4 Ohm): 800 Watts (+0, -0.5dB)
Subsonnic-filter: 12Hz / -3dB, 24dB/Octave
Phase: 0° - 180°, 180° - 360°
Crossover frequency subwoofer: 50Hz - 150Hz, 18dB/Octave
Bassboost: 20Hz - 50Hz
Bossboost level: 0dB - +6dB
Damping factor: 1000
Protection: Output shortcut / DC-error
Crossover filtering: Linkwitz-Riley, 24dB/Octave
Input impedance RCA: 10kOhm
Input impedance XLR: 10kOhm
230/115Vac switchable