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.
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.
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.
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.
AC POWER
The 1283P 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.
SPS™ 1283P 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:
74 lbs.
1283P
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. Midrange drivers reproduce exceptional
detail without harshness and the top-end is 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 1283P 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.
Read general information about the 1283 enclosure for specs, warranty and
precautions on the other side.
REAR POWERED CONNECT PLATE
1283P
PRO SOUND REINFORCEMENT
MADE IN THE
USA
POWER 300 Watts
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 .
WARNING - TO PREVENT FIRE OR SHOCK HAZARD DO NOT EXPOSE TO RAIN
OR MOISTURE. REFER SERVICING TO QUALIFED PERSONNEL.
Serial No.
AC power
connector
Power
Switch
Status LED
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
Serial
Number
1283P POWERED SPEAKER
INSTRUCTIONS
