10
O W N E R ’ S M A N U A L
MODEL 500 AMPLIFIER
S P E C I F I C A T I O N S
S E T U P (continued)
D
Frequency Response: 20Hz – 300Hz
Crossover Frequency: 40Hz – 120Hz (Low-pass lter with bypass switch)
Phase Adjustment: 0 – 180 degrees (Continuously variable)
Amplier Output Power: 500 watts RMS into 4 ohms, with thermal and clipping limiters
250 watts RMS into 8 ohms, with thermal and clipping limiters
Distortion: Less than 0.2% at rated power
Audio Inputs: Summing stereo line level (RCA x2)
LFE (RCA shared with Left input connector)
Input Impedance: Line Level – 20k ohms, Unbalanced
Input Power: 120V 60Hz AC
Input Power Connection: IEC 2-wire receptacle with integral fuse holder
Power (Mains) Fuse: 5A 250V T5AL (5x20mm) style Slow Blow
Power Modes: Auto signal sensing and always on
Auto Off Delay: ~10 minutes
Dimensions: 16-7/8"W x 3-7/8"H x 14.75"D, (429W x 98H x 375D)mm (with feet, without ears)
Weight: 15lbs (6.8kg)
Shipping Dimensions: 21.5"W x 8.5"H x 17.5"D, (550W x 220H x 450D)mm
Shipping Weight: 20lbs (9.1kg)
Other Controls
Subsonic Filter
This control is used to protect the subwoofer from damage due to excessive excursion, reduce distortion,
and also to preserve the ampliers power in installations where the subwoofer is incapable of reproducing
extremely deep bass passages. Ideally, the control should be set at or just below the woofer’s low frequency
limit. The factory default position is 35Hz. This will work well for most subwoofers 12” or less in diameter.
For large subwoofers or where the woofer is capable the control should be lowered below the 35 Hz position.
Crossover Switch
If you choose to bypass the internal crossover and use an external crossover, such as those located in most
modern receivers and processors, then you will need to ne tune the system based on the adjustments
provided by the manufacturer of your electronics in conjunction with the Level and Phase controls on the
MODEL 500. Note, the Level and Phase adjustments on the MODEL 500 are not bypassed and will still
function as indicated above.
To bypass the internal crossover, move the Crossover switch to the Bypass position. The subwoofer will
now pass signals up to 300Hz.
Auto Power Mode Switch
The MODEL 500 contains a circuit that automatically powers up the amplier when a signal is detected. The
same circuit also places the MODEL 500 into standby mode when no signal has been detected for a period
of approximately 10 minutes. This signal sensing circuit can be bypassed by switching the Auto switch to
the ON position if it is preferable to control the MODEL 500’s power with a remotely operated power source.
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