Crown Stereo Amplifier LPS 1500 User Manual

L P S S E R I E S  
LPS SERIES  
he LPS Series of power amplifiers from  
Crown® represents a new era in afford-  
Table, quality power amplification. All three  
models in the series are powerful, rugged and  
reliable. They are suited for applications such as  
churches, concert tours, stages, disco, pubs, or  
any place that requires amplifier installation.  
The three models in the series are the LPS-  
800, LPS-1500 and LPS-2500. They are identi-  
cal except for output power.  
Features include XLR inputs, Speakon® and  
binding post outputs, stereo/parallel/bridge-  
mono mode, power/fault/signal presence/clip  
indicators, forced-air cooling; and protection  
against shorts, no-load, on/off thumps and  
radio-frequency interference. Every LPS Series  
amplifier is backed by a one-year limited war-  
ranty.  
With over six decades of experience designing  
and building rock-solid products, Crown is the  
standard in amplifier technology. So check out  
the affordable Crown LPS Series. They are a  
powerful argument for quality and value!  
Features  
Stereo/parallel/bridge-mono mode  
Two level controls, power switch, power  
LED, and six LEDs which indicate signal  
presence, clip and fault for each channel  
Efficient forced-air cooling prevents exces-  
sive thermal buildup  
For more details about the LPS Series, contact  
your authorized Crown distributor.  
Protection against shorts, no-load, on/off  
thumps and radio-frequency interference  
Electronically balanced XLR inputs; binding  
post and Speakon® outputs  
Specifications  
The following applies to units in Stereo mode with 8-ohm loads  
unless otherwise specified.  
Performance  
Front Panel Controls and Indicators  
Fault Indicator: Red LED, one per channel ,  
indicates channel shutdown.  
Power Charts  
Sensitivity (for full rated power at 4 ohms):  
1.25 V rms.  
*1 kHz  
Power  
LPS-800  
Frequency Response (at 1 watt): 40 Hz - 20  
kHz, +0/–3 dB.  
Clip Indicator: Red LED, one per channel,  
flashes when signal is audibly distorting.  
300W  
150W  
600W  
4-ohm Stereo (per channel)  
8-ohm Stereo (per channel)  
8-ohm Bridge-Mono  
Signal-to-Noise Ratio (below rated power, 20  
Hz to 20 kHz, A-weighted): >100 dB.  
Signal Presence Indicator: Green LED, one  
per channel, flashes when input signal exceeds  
–40 dBu.  
Total Harmonic Distortion (THD): < 0.5%, 20  
Hz - 20 kHz.  
*1 kHz Power: refers to guaranteed minimum power  
in watts at 1 kHz with 0.5% THD.  
Power Switch: Push-on, push-off.  
Intermodulation Distortion (IMD)  
(60 Hz and 7 kHz at 4:1 from full rated output to  
–30 dB): < 0.3%.  
Power Indicator: Blue LED illuminates when  
*1 kHz  
Power  
amplifier is on.  
LPS-1500  
Volume Control: Sets output level of each  
channel.  
Damping Factor (8 ohms, 10 Hz - 400 Hz):  
>300.  
400W  
250W  
800W  
4-ohm Stereo (per channel)  
8-ohm Stereo (per channel)  
8-ohm Bridge-Mono  
Back Panel Controls and Connectors  
Reset Button: Resets the circuit breaker.  
Output Connectors: One Speakon® per channel  
connects to loudspeakers. One pair of binding  
posts per channel connects to loudspeakers;  
accepts banana plugs or bare wire. (European  
models do not accept banana plugs.)  
Crosstalk (below rated power):  
at 1 kHz: –76 dB.  
at 20 kHz: –58 dB.  
*1 kHz Power: refers to guaranteed minimum power  
in watts at 1 kHz with 0.5% THD.  
Input Impedance (nominal): 20 kilohms bal-  
anced, 10 kilohms unbalanced.  
*1 kHz  
Power  
Output Power: See power charts.  
LPS-2500  
Load Impedance: (Note: safe with all loads).  
4 ohms in stereo mode, 8 ohms in bridge-mono  
mode.  
725W  
550W  
1,450W  
Input Connectors: Balanced XLR, one per  
channel.  
4-ohm Stereo (per channel)  
8-ohm Stereo (per channel)  
8-ohm Bridge-Mono  
Output Mode Switch: Stereo (dual), Parallel or  
Bridge.  
AC Line Voltage and Frequency Configurations  
Available ( 10%): 120VAC/60Hz,  
220VAC/50Hz, 240VAC/50Hz.  
*1 kHz Power: refers to guaranteed minimum power  
in watts at 1 kHz with 0.5% THD.  
 

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