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Extracted text from Carver PM 700 Owners Manual (Ocr-read)
Page 1
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
Page 2
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
Page 6
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
Page 11
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