Carvin 1584 Instruction Manual - Page 4

POWERED MODELS APS ACTIVE POWERED SYSTEMS APS BI-AMPED/TRI-AMPED LOUDSPEAKERS Carvin's APS™ Active Powered Speakers are more than just another "power amp in a cabinet". With two separate power amps in the 2-way systems and three separate power amps in the 3-way systems, a more efficient design adds clarity as each amp only needs to reproduce frequencies for it's respective driver. Compared to other powered speakers the APS system will deliver more clarity with greater power. APS POWER AMPS APS loudspeakers utilize Carvin's DCM power amp technology to supply continuously rated RMS power. APS TIME ALIGNMENT CIRCUITRY Due to the physical size and placement of various drivers in a speaker enclosure, the sound of each driver reaches your ears at different times. This difference is enough to cause a slight phase change. To alleviate this problem, the APS utilizes time delay circuits to time-align the drivers with one another. DISTANCE DELAY 360µs APS ACTIVE ELECTRONIC CROSSOVERS An electronic crossover splits the incoming signal into specific frequency ranges before going to the separate amps for each driver. For superior frequency control and maximum phase accuracy, the APS utilizes the design of our XC3000 crossover featuring sharp 4th order 24dB/octave Linkwitz-Riley filters. Perfect crossover points are achieved with appropriate frequencies going to each driver. A subsonic filter improves woofer efficiency by removing extremely low frequencies under 20 Hz that waist power. APS HOOK-UP 1. INPUT/THRU OUTPUT Use the balanced XLR or 1/4" connectors featured on the rear control panel. Using a balanced source will reduce noise which may be picked up by the cable. You may DAISY-CHAIN as many APS systems as you wish. All connectors are wired in parallel. 2. APS EQUALIZATION The APS powered loudspeakers offer a by passable 3-band mid sweep equalizer for custom tuning to the acoustical environment. The EQ system is engineered specifically for the APS, featuring a boost and cut range of ±6dB to prevent radical adjustments that could otherwise compromise the sound of the system. The Mid-band sweep is particularly useful for enhancing critical mid range frequencies for stage monitoring or for cutting certain frequencies to compensate for room resonances. Press the "EQ IN" switch to activate the equalizer. The BLUE LED displays when the EQ is active. 3. LEVEL CONTROL The LEVEL control adjusts the output volume of the APS. Start by setting the LEVEL at "0". Weak input signals can be boosted by setting the LEVEL at "+6". Strong signals can be reduced by turning the LEVEL toward "-12". The RED LED will flash if the internal power amps start to clip. Turn the LEVEL control down to avoid clipping. Damage to the drivers can result from operating at a level where the RED CLIP LED is constantly illuminated. 4. POWER/PROTECT/CLIP INDICATOR Power up your audio source first, then turn on the APS with the power switch. When the system is active, the LED will indicate GREEN. When shutting down turn off the APS first, then turn off the mixer. If any of the power amps are clipping, the LED will indicate RED and you should reduce the output level. If the system should go into protect mode, the LED will indicate YELLOW and the power amps will shut off. This may occur if; a) the system is overheated due to clipping the power amps for an extended period of time, b) one of the internal drivers developed a short or c) the power amps require service. 5. POWER Push this switch to the UP position to apply power to the unit. The POWER LED will light to show the system is on. 6. AC POWER Use a standard grounded AC cord. Whenever possible, use dedicated circuits for powered speakers. The powered speakers are available in either 120V or 240V models. 7. CROSSOVER FREQUENCY SWITCH The CROSSOVER FREQUENCY switch selects the crossover point for the APS. The 120Hz out setting is generally used with small to mid sized speakers in your setup. Almost all 12" and 15" woofers will benefit from the 120Hz setting. The 80Hz (switch in) setting is generally used with larger 18" woofers. APS BI-AMP/TRI-AMP REAR PANEL: 2 LOW 0 -3 +3 MID 0 -3 +3 3 MID SWEEP 1kHz HIGH 0 -3 +3 -6 +6 EQ IN -6 +6 100Hz 5kHz -6 +6 742A TIME-ALIGNED BI-AMP SYSTEM 300 W RMS 0 LEVEL -12 +6 RED CLIP YELLOW GREEN PROTECT POWER MADE IN THE USA ! CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION ± TO PREVENT ELECTRICAL SHOCK DO NOT DEFEAT THE SAFETY GROUND ON THE POWER CORD. DO NOT REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE. WARNING ± TO PREVENT FIRE OR SHOCK HAZARD DO NOT EXPOSE TO RAIN OR MOISTURE. REFER SERVICING TO QUALIFIED PERSONNEL. Serial No. 120VAC 60Hz 300VA ATTENUATION dB ATTENUATION dB 20Hz Low Frequency Low Pass Filter 300 Watts 742A, 832A 1 kHz High Frequency High Pass Filter 50 Watts BI-AMP 20 kHz Low Frequency Low Pass Filter 1584A 300 Watts 1588A 700 Watts 20Hz Mid Frequency Band Pass Filter 75 Watts 120 Watts 1 kHz High Frequency High Pass Filter TRI-AMP 50 Watts 80 Watts 20 kHz THRU OUTPUT INPUT 1 45 6 SW1801 SUBWOOFER 8. CROSSOVER BYPASS SWITCH The crossover bypass switch bypasses the internal active crossover allowing the use of an outboard active crossover. 8 3 7 CROSSOVER BYPASS SW1801A CROSSOVER FREQUENCY 120Hz 80Hz ACTIVE SUBWOOFER SYSTEM 700W RMS HI PASS OUTPUT 0 LEVEL -12 +6 RED CLIP YELLOW GREEN PROTECT POWER MADE IN THE USA ! CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION ± TO PREVENT ELECTRICAL SHOCK DO NOT DEFEAT THE SAFETY GROUND ON THE POWER CORD. DO NOT REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE. WARNING ± TO PREVENT FIRE OR SHOCK HAZARD DO NOT EXPOSE TO RAIN OR MOISTURE. REFER SERVICING TO QUALIFIED PERSONNEL. Serial No. 120VAC 60Hz 700VA THRU OUTPUT INPUT 1 45 6