HARMAN KARDON DPS-12
Manual de Servicio

Amplifier/Subwoofer

PSW-D112/DPS-12

OPERATION

Crossover Adjustments
High-Pass Control
If you hooked up your subwoofer as shown in Speaker Connection 4 on page 9. you also have the capability of adjusting the high-pass frequency. The High-Pass control determines the frequency at which the main speaker will start reproducing sounds. If your main speakers can comfortably reproduce some low-frequency sounds, also set this control to a lower frequency setting, between 50Hz � 100Hz. This will concentrate the subwoofer�s efforts to the ultradeep bass sounds, while your main speakers continue to reproduce the mid-bass information. If you are using smaller bookshelf speakers that do not extend to the lower bass frequencies, set the high-pass crossover control to a higher setting, between 125Hz � 180Hz. With this setting, your main speakers will not have the burden of reproducing any low-frequency sounds. If you hooked up your subwoofer as shown in Speaker Connection 1 on page 8, the high-pass frequency is fixed at 150Hz. If you hooked up your subwoofer as shown in Speaker Connection 2 or 3 on page 8 and 9, no high-pass control adjustment can be made from the subwoofer. Unless you receiver/amplifier incorporates a high-pass crossover, your main speakers will continue to get a full-range signal. Final adjustment and blending of the low-pass and high-pass controls may evolve over several listening sessions. A good starting point would be to set both the lowand high-pass controls to the same frequency and adjust from that point.

Phase
Phase Control
The Phase Control determines whether the subwoofer speaker�s piston-like action moves in and out with the main speakers, 0° , or opposite the main speakers, 180° . There is no correct or incorrect setting. Proper phase adjustment depends on several variables such as room size, subwoofer placement and listener position. Adjust the phase switch to maximize bass output at the listening position. Remember, every system, room and listener is different. There are no right or wrong settings; any setting you choose will result in excellent performance. Should you decide to fine-tune your system for optimum performance, be patient and trust your ears. It will be worth the effort involved to fully �tweak� your system.

Low-Pass Control
The Low-Pass control determines the highest frequency at which the subwoofer reproduces sounds. If your main speakers can comfortably reproduce some low-frequency sounds, set this control to a lower frequency setting, between 50Hz � 100Hz. This will concentrate the subwoofer�s efforts on the ultradeep bass sounds required by today�s films and music. If you are using smaller bookshelf speakers that do not extend to the lower bass frequencies, set the low-pass crossover control to a higher setting, between 120Hz � 180Hz.

7