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|  | SQ-3000Fitted with high end Burr Brown lcs
German made magnet
High pass variable crossover
Low pass variable crossover
Each channel input gain control
| LS-800Adjustable input gain volume
Low input / High input push switch
Protection circuit for thermal, SP short, DC reverse, DC offset
Power on led
Protection led
| CS-700TBass / Treble Control
Two step subwoofer crossover ( 50Hz / 125Hz at 12dB OCT )
Three step bass boost ( 0dB, 6dB, 18dB at 45Hz )
Protection circuit for thermal, overload, DC reverse, DC offset
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