Справочник Пользователя для Carvin 742-742p-2003
SPS™ 742P POWERED AMP SPECS
Frequency Response:
20 Hz to 20 kHz ±1 dB
THD:
less than .1%
Power :
300 watts @ 8
Ω
Duty Cycle :
Continuous without power reduction circuits
Sensitivity:
.5VAC for full output, 12 dB pad
Input/Through:
XLR & 1/4" Balanced
Input Impedance:
10k
Ω, (for 100 to 600 Ω inputs)
Input Common Mode Rejection:
72 dB @ 1k Hz
Overload Protection:
Yes
AC Power Muting:
Yes
Power Supply:
Toroid Design
Power Amp Design:
High Slew Rate Digital DDPA™
Power Amp Efficiency :
91%
AC Voltage, VA:
120 or 240 VAC models, 400VA
Idle VA:
15VA
AC Connection:
3 prong connector (grounded)
AC Power Cable:
16 Ga (heavier for long runs)
Wt:
52 lbs.
742P
SPS™ POWERED SPEAKER FEATURES
Carvin’s SPS™ SMART POWERED SPEAKERS™ are more than just another
“power amp in a cabinet”. They offer advanced electronics to perfectly control
every speaker component. Woofers are power-managed through active
filtering, allowing more low-end punch and preventing over excursion. The
mid range has exceptional detail without harshness and the top-end remains
crystal clear. The exclusive optoisolator limiter helps keep your peaks under
control reducing distortion. Surprising transparency is delivered by pure,
uncolored power from ultra-fast slew rate power amps.
every speaker component. Woofers are power-managed through active
filtering, allowing more low-end punch and preventing over excursion. The
mid range has exceptional detail without harshness and the top-end remains
crystal clear. The exclusive optoisolator limiter helps keep your peaks under
control reducing distortion. Surprising transparency is delivered by pure,
uncolored power from ultra-fast slew rate power amps.
The heart of every Carvin SPS™ powered speaker is our exclusive Digital
Powered Processing Amplifier (DPPA™), which is fundamentally, a very
sophisticated delta-sigma V/A converter. The amplifier's THD is less than .1%
from 20-20k Hz. The 742P SPS™ offers 300 watts direct to the drivers with no
cable loss. SPS™ powered speakers have an incredible 91% efficiency
allowing you to run more powered speakers from the same 15 or 20 amp AC
circuit. They run cool because power is not wasted into the heat sink. This
also means you can expect full output 24 hours continuously - not reduced as
with other systems when they get hot. Of course, mute and protection circuits
are standard to save your gear from any unfriendly stage conditions. The
biggest advantage of Carvin powered speakers is rock-solid reliability and
convenience while only adding 6 lbs over the weight of our standard
enclosures!
sophisticated delta-sigma V/A converter. The amplifier's THD is less than .1%
from 20-20k Hz. The 742P SPS™ offers 300 watts direct to the drivers with no
cable loss. SPS™ powered speakers have an incredible 91% efficiency
allowing you to run more powered speakers from the same 15 or 20 amp AC
circuit. They run cool because power is not wasted into the heat sink. This
also means you can expect full output 24 hours continuously - not reduced as
with other systems when they get hot. Of course, mute and protection circuits
are standard to save your gear from any unfriendly stage conditions. The
biggest advantage of Carvin powered speakers is rock-solid reliability and
convenience while only adding 6 lbs over the weight of our standard
enclosures!
SMART POWERED SPEAKERS™ are easy to connect via a 1/4” or XLR
balanced inputs. Daisy-chain as many powered speakers as you need for
additional coverage. A 12 dB gain switch matches every audio source. A
removable AC cord frees the enclosure when transporting.
additional coverage. A 12 dB gain switch matches every audio source. A
removable AC cord frees the enclosure when transporting.
Read general information about the 742 enclosure for specs, warranty and
precautions on the other side.
precautions on the other side.
REAR POWERED CONNECT PLATE
12dB PAD
OUT
IN
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.
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.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
!
INPUT
THROUGH
MADE
A
US
IN THE
Serial No.
0B
PRO SOUND REINFORCEMENT
POWERED – 300 WATTS
ACTIVE MODE
INTERNAL AMP
PASSIVE MODE
8
Ω / 300W
SPEAKER INPUT
742P
POWER
GREEN
PROTECT
YELLOW
120VAC 60Hz
700VA
AC power
connector
connector
Power
Switch
Switch
Status LED
GREEN-Normal
YELLOW-Protect
GREEN-Normal
YELLOW-Protect
Use any of the 3 connectors
from your audio source.
Daisy-chain to other
systems. All connectors are
balanced.
12dB PAD switch to reduce the level
742P POWERED/PASSIVE SPEAKER
INSTRUCTIONS
Internal
Amp Bypass
Switch
Amp Bypass
Switch
Passive Input -
speaker cable from
outboard amp
speaker cable from
outboard amp
INPUT
For any distance over 25’, use a balanced source. Use the balanced XLR or
1/4” connectors featured on the rear connect plate. You may DAISY-CHAIN as
many speakers as you wish. All connectors are wired in parallel.
many speakers as you wish. All connectors are wired in parallel.
12dB PAD
To start the initial hook up, be sure the 12dB pad switch is in the “IN”
position. This will be the least sensitive position for your input source. If
your signal is weak, depress the Pad switch to the “OUT” position, which will
raise the level of your powered speaker.
your signal is weak, depress the Pad switch to the “OUT” position, which will
raise the level of your powered speaker.
SOFT LIMITING
Unlike other limiters, the SPS™ incorporates an exclusive optoisolater limiter
system, which does not add distortion when limiting. Soft limiting starts to
occur when you approach the maximum output of your powered speaker
allowing you to get more usable power out of your system without severe
clipping. However, when you hear distortion, hard clipping or cutting out,
reduce the overall level as you have exceeded the system’s capacity.
occur when you approach the maximum output of your powered speaker
allowing you to get more usable power out of your system without severe
clipping. However, when you hear distortion, hard clipping or cutting out,
reduce the overall level as you have exceeded the system’s capacity.
POWER/PROTECT
When the system has been activated by the power switch, the LED will
indicate GREEN. If the system should go into protect, the LED will indicate
YELLOW which may occur if; a) one of the internal drivers short or b) if the
power amp should require service.
YELLOW which may occur if; a) one of the internal drivers short or b) if the
power amp should require service.
AC POWER
The 742P is available in either 120V or 240V models. Always use dedicated
circuits for powered speakers. Every Carvin SPS™ powered speaker is
designed to be left on continuously in the case of permanent installations.
designed to be left on continuously in the case of permanent installations.
ACTIVE MODE/PASSIVE MODE
Normally this switch is left in the ACTIVE MODE setting, which uses the
speakers internal amplifier to power the speaker. If desired, switch to
PASSIVE MODE to bypass the internal amplifier and connect an external
amplifier directly to the speaker through a 1/4" speaker cord. Note: Make sure
to use the SPEAKER INPUT jack, and not the audio input jack for this
purpose. The power cord does not need to be connected to the speaker in
PASSIVE MODE- it will function like a regular, non-powered speaker.
Normally this switch is left in the ACTIVE MODE setting, which uses the
speakers internal amplifier to power the speaker. If desired, switch to
PASSIVE MODE to bypass the internal amplifier and connect an external
amplifier directly to the speaker through a 1/4" speaker cord. Note: Make sure
to use the SPEAKER INPUT jack, and not the audio input jack for this
purpose. The power cord does not need to be connected to the speaker in
PASSIVE MODE- it will function like a regular, non-powered speaker.
76-00742A 0503