User’s Guide for the C R AT E A U D I O SPA100 Power On Off Power Signal Limit Protect 1/2-Rack Power Amplifier In order to achieve maximum performance from your new Crate Audio SPA Series Power Amp we recommend that you read this user’s guide prior to its use.
SPA100 1/2-Rack Power Amplifier Table of Contents: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Front Panel Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Rear Panel Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Speaker Impedances And Power Ratings . . . . . . . . . . . . . . . .6 Joining Two Amplifers For Rack Mounting . . .
SPA100 1/2-Rack Power Amplifier Introduction: Congratulations. You have selected one of the finest sound reinforcement amplifiers available, the Crate Audio SPA100 1/2-Rack Power Amplifier. Our many years of experience in high-performance audio equipment, combined with our extensive research and development procedures, have enabled us to produce an amplifier which provides the highest quality and reliability possible.
SPA100 1/2-Rack Power Amplifier Front Panel Information: Power On Off 1 2 Signal Limit Protect 3 4 5 6 7 1: POWER SWITCH: This switch applies AC power to the amplifier. The amp is on when the top of the switch is depressed, off when the bottom of the switch is depressed. The Power LED indicator (#3) illuminates when the amplifier is on. quency drivers.) Periodic flashing of the Limit LED indicates operation at or near full output. This is normal.
SPA100 1/2-Rack Power Amplifier Rear Panel Information: LINE INPUTS SPEAKER OUTPUTS USE ONLY 250V FUSE 110-120 220-240 115V 60Hz FUSE: T3AA, 250V 230V 50Hz FUSE: T2A, 250V 4 OHMS MIN 8 9 10 11 12 13 14 8: FAN INTAKE AREA: Air for cooling the SPA100 is drawn in by the fan at the rear and side, directed through the amplifier, and exhausted through the front panel vent. Do not block or impede the airflow through these vents and keep the area free of foreign materials.
SPA100 1/2-Rack Power Amplifier Speaker Impedances And Power Ratings: When connecting speaker cabinets, you must observe proper load impedances. Whenever connecting multiple cabinets to an amplifier, the total load impedance must be calculated to insure proper performance from the amplifier. The impedance chart which follows shows the total load impedances of many common parallel speaker combinations: IMPEDANCE CHART: The formula for this chart is: SYSTEM ONE TWO SPEAKERS IN PARALLEL 16 8:16 16:16 5.
SPA100 1/2-Rack Power Amplifier Installations and Operation: Mono Operation (One Amplifier): Connect a SPA100 between the outputs of your mono signal source and your speaker(s). The minimum impedance for the speaker(s) is 4 ohms. LINE INPUTS SPEAKER OUTPUTS USE ONLY 250V FUSE 110-120 220-240 115V 60Hz FUSE: T3AA, 250V 230V 50Hz FUSE: T2A, 250V 4 OHMS MIN 8 OHM SPEAKERS (PE12, PE15, etc.) GRAPHIC EQ (LS1-131) OUT IN MIXING CONSOLE (CSX12, CMX62, etc.
SPA100 1/2-Rack Power Amplifier Installations and Operation: Stereo Operation (Two Amplifiers): Connect one SPA100 between the left channel output of your stereo signal source and your left channel speaker(s). Connect another SPA100 between the right channel output of your stereo signal source and your right channel speaker(s). The minimum impedance for the speaker(s) is 4 ohms for each amplifier.
SPA100 1/2-Rack Power Amplifier Installations and Operation: Stereo Operation (Two Amplifiers): Connect one SPA100 between the output of your house speaker signal source and your house speaker(s). Connect another SPA100 between the output of your monitor signal source and your monitor speaker(s). The minimum impedance for the speaker(s) is 4 ohms for each amplifier.
SPA100 1/2-Rack Power Amplifier Installations and Operation: Biamping (Two Amplifiers): Connect one SPA100 between the output of your low frequency signal source and your low frequency speaker(s). Connect another SPA100 between the output of your full range signal source and your full range speaker(s). The minimum impedance for the speaker(s) is 4 ohms for each amplifier.
SPA100 1/2-Rack Power Amplifier Installations and Operation: Triamping (Three Amplifiers): Connect one SPA100 between the output of your low frequency signal source and your low frequency speaker(s). Connect another SPA100 between the output of your mid frequency signal source and your mid frequency speaker(s). Connect a third SPA100 between the output of your high frequency signal source and your high frequency speaker(s). The minimum impedance for the speaker(s) is 4 ohms for each amplifier.
SPA100 1/2-Rack Power Amplifier Technical Specifications POWER OUTPUT 100 Watts RMS @ 4 ohms 75 Watts RMS @ 8 ohms FREQUENCY RESPONSE +/-0.5dB, 20Hz – 20kHz @ full rated power TOTAL HARMONIC DISTORTION Less than .06%, 20Hz – 20kHz Typical .02% @ 1kHz INTERMODULATION DISTORTION Less than .05% @ 300W / 4 ohms SLEW RATE 20 volts per nanosecond SIGNAL TO NOISE RATIO Greater than 100dB INPUT TYPE AND IMPEDANCE Transformerless electronically balanced, 20k actual load impedance.
