Carver PM 700 Owners Manual
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Extracted text from Carver PM 700 Owners Manual (Ocr-read)
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Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .1 Unpacking and Paperwork . . . . . . . . . . . . . . .1 Features and Specifications pm700 . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 pm950 . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Controls and Functions . . . . . . . . . . . . . . . . . .6 Installation Location and General Precautions . . . . . . . . . . . . . . . . . .8 Mechanical Considerations . . . . . . . . . . . . .8 Rear Support for Road Applications . . . . . . . . . . . . . . . . . . .8 Thermal Considerations . . . . . . . . . . . . . . .8 AC Power Considerations . . . . . . . . . . . . . .9 Magnetic Leakage Considerations . . . . . . . . . . . . . . . . . . . . . .9 Input W iring . . . . . . . . . . . . . . . . . . . . . . . .9 Input Sensitivity . . . . . . . . . . . . . . . . . . . . .9 Output W iring . . . . . . . . . . . . . . . . . . . . . .10 Installation (continued) Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . .10Dual Mono . . . . . . . . . . . . . . . . . . . . . . . .10 Bridged Mono . . . . . . . . . . . . . . . . . . . . .10 Parallel Mono . . . . . . . . . . . . . . . . . . . . . .10 70V Distribution Systems . . . . . . . . . . . . .11 Clipping Eliminator . . . . . . . . . . . . . . . . . 11 Level Defeat . . . . . . . . . . . . . . . . . . . . . . . 11 Power ON Sequencing . . . . . . . . . . . . . . .11 Remote Turn-On of One or More Amplifiers . . . . . . . . . . . . . .12 Operating Tips Using the pm700/pm950 . . . . . . . . . . . . . .13 Accessory Options . . . . . . . . . . . . . . . . . .13 Servicing Instructions . . . . . . . . . . . . . . . . . .14 In Case of Difficulty . . . . . . . . . . . . . . . . . . .15 Care and Service Assistance . . . . . . . . . . . . .16 W arranty Information . . . . . . . . . . . . . . . . . .17 Table Of Contents CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER (OR BACK) NO USER-SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure, that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and main- tenance (servicing) instructions in the literature accompanying the appliance. Safety Information
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Introduction Congratulations on your purchase of a new Carver Professional Power Ampl\ ifier. It is backed by state-of-the-art engineering and manufacturing techniques to bring you the best in quality craftsmanship and reliable performance. The pm700 and pm950 are speciall\ y designed for pro sound applications. Their rugged construction and low profile make them \ ideal for sustaining the abuses of the road with reliability and space-saving economy. And their accurate sound and ample power make them ideal for critical studio applications as well. The pm70\ 0 is rated at 350 watts perchannel into 4 ohms and 225 watts per channel into 8 ohms. In bridged mo\ no operation it is rated at 700 watts into 8 ohms. The pm950 is rated at 475 watts per channel into 4 ohms and 325 watts per channel into 8 ohms. In bridged mono operation it is rated at 950 watts \ into 8 ohms. The sophisticated protection circuits designed into these amplifiers will protect your sys\ tem should an unexpected fault occur. They also protect the amplifiers from excessive temperature, continuous current limiting and shorted outputs. The balanced input uses a high quality, high common-mode reject\ ion differential amplifier for excep- tional hum and noise rejection. The sequencing feature allows a rack of \ amplifiers to be powered up from a remote location. The daisy-chain connection scheme causes each amplifier\ to turn on in sequence, preventing the l a rge in-rush current that can occur when an entire rack of amplifiers is turned on s i m u l t a n e o u s l y . These power amplifiers were designed and manufactured by people with a lifetime commitment to providing the worlds finest components for music and s\ ound reproduction. Thanks for placing your confidence in Carver Professional. We know your amplifier will provide many years of dependable s e r v i c e and reliable sound reproduction. Unpacking and P aperwork Carefully unpack the amplifier and keep the original carton and packing \ materials for future moving, shipment or long-term storage. After opening the box, please check for a\ ny visible signs of damage that were not apparent from the outside of the box. If you do encounter what appea\ rs to be concealed damage, please con- sult your Carver Professional Dealer before installing the unit. Important Paperwork Make sure to save your sales receipt. Your receipt is extremely important to establish the duration of your Limited W arranty, and for insurance purposes. Next, make a note of the serial num\ ber which is located on the back of the amplifier. Record it in the space provided below for conveni\ ent reference. Model: pm700 pm950Serial Number: Purchased at: Date: F i n a l l y , take a moment to fill out and return the Warranty Registration Card pa\ cked with the amplifier and return it to Carver Professional. This will allow us to keep you informed about\ new products as they become available. 1
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Power Output: (20 Hz to 20kHz, with no more than 0.1%)325 watts per channel into 8 ohms 475 watts per channel into 4 ohms Bridged Mono: 950 watts into 8 ohms at 1kHz, with no mor e than 0.1% THD Dynamic Headroom: >2.0 dB Frequency Response: 20Hz to 20kHz (±0.75dB) Channel Separation: >65 dB @ 1kHz Damping Factor: <400 Input Impedance: 25 Kohms unbalanced 50 Kohms balanced Sensitivity: High: 0.775VRMS for rated power into 4 ohms 72mV RMS for 1W into 4 ohms Low: 1.5 V RMS for rated power into 4 ohms 140mV RMS for 1W into 4 ohms Gain: High: 35.0dB (±0.5 dB) Low: 29.0dB (±0.5 dB) Input Overload: +18 dBu THD: < 0.1% IM Distortion: < 0.1% Signal-to-Noise Ratio: >100dB, A-weighted,ref. to rated power into 4 ohms Slew Rate: 40V / µS (Band width limited) CMRR: >80dB @ 1kHz Power Consumption: 90W at idle; 725W withmusical program;1370W at full power into 8 ohms (continu - ous); 2000W at full power into 4 ohms (continuous) Power Requirements: 120VAC / 60Hz (USA and Canada) Other voltages as required for export Fusing: 12 amp slo-blo (120V / 60Hz) 8 amp slo-blo (230V / 50Hz) Sequence Receive Terminal: +7V to +15VDC 50mAmin. current require- ment Display: 7 LED indicators per channel, 1 green READY, 5 yellow SIG- NAL, 1 red CLIP/ PRO - TECT Size (H x W x D): 3.50 (2U) x 19 x 13.25 89 mmx 483 mm x 337 mm Net Weight: 34 lbs. (15.4 kgs) Shipping Weight: 36 lbs. (16.36 kgs) Due to ongoing product development, features, specifications, and availability are subject to change without notice. 5 BACK
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Output Wiring Use heavy gauge wire for speaker connections. The greater the distance b\ etween the amplifier and the speakers, the larger the diameter the wire should be to minimize pow\ er losses across the wire and improve the damping of the speaker. W ire thickness specifications (or gauges) get larger as the wire gets thinner; thus 14-gauge wire is thicker than 16-gauge wire.\ Use the following as a guide: up to 25 ft. use 16 gauge, up to 40 ft. use 14 gauge, up to 60 ft\ . use 12 gauge, up to 100 ft. use 10 gauge, up to 150 ft. use 8 gauge, up to 250 ft. use 6 gauge. This will insure that the resistance of the speaker wire is less than 5%\ of 4 ohms, resulting in a transmission loss of less than 0.5 dB. The multi-way binding posts can accept spade l\ ug, bare wire or banana connections.Be sure that all the fine strands of the wire are twisted together and c\ ontained within the connector. If even one strand is loose and can touch the adjacent terminal, a short circuit\ may result. Class I (NEC) wiring must be used. Polarity Loudspeakers must be connected with consistent polarity for correct phas\ ing between them. Incorrectphasing will do no physical harm, but frequency response will be affecte\ d. The key is to make sure that both speakers connected to the speaker terminals are hooked up the same way. \ Connect (–) at the speaker outputs to (–) on the back of the speaker, and (+) at the speaker outputs\ to (+) on the back of the speaker. Dual Mono The Stereo/Mono switch is located on the Input Board which is connected \ to the input panel. Connect the input signal to CH2 input (CH1 input becomes disabled). Connect the speakers to the Speaker Outp\ uts on the amplifier in the same way that you would for normal stereo operation. Bo\ th speaker outputs will carry the signal that is connected to the CH2 input. Bridged Mono The Stereo / Mono switch is located on the Input Board which is connected to the inpu\ t panel. Connect the input signal to CH2 input (CH1 input becomes disabled). Connect the sp\ eaker(s) to the two (+) speaker terminals. The CH2 (+) terminal is the hot (non-inverting) side, and\ the CH1 (+) terminal is the low (–,inverting) side. When connected in this way, each channel sees \ one-half the impedance of the speaker that is connected between them. If an 8 ohm speaker is used, each channel wil\ l see a 4 ohm load. Therefore it isnot recommended that any load lower than 8 ohms be connected in this mod\ e of operation. Use Parallel Mono operation for lower impedances. Note:Be sure to set both of the input level controls to the exact same setting for equal power distribution per channel. Switching the Level De\ feat Switch off is a handy way to insure that both channels are operating at the same level. CAUTION: In bridged mono operation, the output connections are actually a balanced output configuration. This means that both output terminals have voltage presen\ t (neither one may be grounded). Parallel Mono Parallel-mono operation is useful when you are running sustained high le\ vels into a single load, or when driving a low impedance load. To configure the amplifier for parallel-mono opera\ tion, contact Carver Technical Service Department for Field Application Bulletin pm700-1. It contains detailed instructions describing the simple procedure for modifying both the pm700 and pm950 power amplifiers for pa\ rallel-mono operation. 10