CARVIN SCx1112, SCx1115, SCx1253, SCx1118, SCx1118A User Manual

CARVIN ENGINEERING DATA SCx1000 series LOUDSPEAKER SYSTEMS

Carvin’s SCx 1000 series loudspeakers are a durable high performance solution for bands and audio companies
for small to mid sized venues. They feature the latest innovations for both live sound and recorded music
playback, incorporating drivers that deliver clear, very musical sound quality at high volume levels up to 134
dB. Smart crossovers with Speaker Guard™ circuitry protect high frequency drivers from overload. Rugged
construction features CNC machined, multi-ply Baltic Birch enclosures protected with UV and weather resistant
Duratec™coating and powder coated radiused steel grills. Twist-loc input connectors, pole mounts, large side
handles and recessed pockets for stacking add to a list of great performance values that are designed for today’s
pro audio.

The SCx1112 is a 12” 2-way enclosure for smaller applications and great for vocal stage monitors. The full range
1200 watt peak power rating and high SPL output permits the performer to really hear their mix. The 60x90 degree
horn is vertically oriented for even floor monitor coverage at close or far angles, and horizontal pole-mounting
provides wide audience coverage when used as front-of-house mains in smaller venues and events.

The SCx1115 is a 15” 2-way multi-purpose enclosure for front of house mains, stage monitors, or DJ sound.
Loaded with a 15” heavy-duty woofer, it will handle up to 1600 watts peak. This is an exceptional sounding
enclosure for most applications requiring extended bass from a small enclosure.

The SCx1253 is a high performance, compact, dual 15” 3-way loudspeaker. The 15” woofers are co-planar
mounted resulting in a compact size that produces exceptional bass with real low-end punch. The 6 1/2” mid-range
horn loaded driver adds a new dimension of clarity to vocals and drums. The high frequency mylar compression
driver features a 90x50 degree horn with a 1-inch exit extending response to 20kHz. The twist-loc input connectors
allow for easy bi-amping. With a 4 ohm impedance and 3200 watt peak power handling, this wide dispersion
loudspeaker system delivers a high intelligibility, studio quality sound with a high SPL peak output of 134 dB.
There is nothing on the MI market matching it’s sound or output at this size and weight.

SCx1112

For more low-end thump, all SCx systems can be supplimented with SCx1118 passive subs or SCx1118A active
subs. The heavy-duty 18” woofer is housed in a bass reflex enclosure delivering sub-bass down to 35 Hz, adding
real depth and feel to your performances. The 8 ohm, 3” voice-coil is designed to handle up to 2000 watts peak.
The active SCx1118A features an internal 1400 watts peak power amp. Ideal for multi-stacking or stacking mains on
top, this compact hi-output subwoofer is a real work-horse that you can depend on, night after night.

Step up to a new experience in high performance sound with Carvin’s SCx loudspeakers.

SCx1115

SCx1253

76-12530A 0113 EP

SCx1118
SCx1118A

12340 World Trade Dr.

San Diego, CA 92128

carvin.com

carvinworld.com

choosing the coRRect ampliFication

SCx Loudspeakers are designed to be used with professional power amplifiers capable
of producing the correct power into equivalent speaker loads. Care should be taken to
avoid amplifier clipping. Due to the fact that music signals have a high peak-to-average
“crest” factor, a lesser power amplifier driven into clipping is more likely to damage a
speaker than a higher power amplifier used within its ratings. When an amplifier is over
driven, its output waveform is clipped or squared off reducing the crest factor. If an
amplifier is extremely over driven, the output waveform can approach that of a square
wave. Under these extreme conditions, an amplifier is capable of producing far more
power than its un-distorted rated power output.

Carvin recommends an amplifier capable of producing at least the power rating, up to

1.5 times the power rating of the speaker. (See TECHNICAL SPECIFICATIONS).
The use of amplifiers with outputs greater than this is not recommended.

Always turn on the amplifiers after the mixer and control systems have been powered
on. This will eliminate power peaks due to switch on surges which can damage
loudspeakers. When powering down the system, reverse the sequence and switch off
the power amplifiers first.

Connection Plates

1. Full Range/Biamp switch

Slide switches to the FULL RANGE position when using a single amplifier delivering
a full range signal, the internal passive crossover network divides the signals to the
appropriate drivers. Replace the rubber plug to seal the cabinet.
Slide the switch to the BIAMP position when using external active crossover and
multiple amplifiers in a bi-amp configuration. The BIAMP position bypasses the
internal passive crossover network. Replace the rubber plug to seal the cabinet.
For the 3-way SCx1253, the Mid-High is driven by one amp and the dual 15” drivers
by another.

2. Full Range/cRossoveR switch

Use the CROSSOVER position to engage the internal Low-Pass Crossover network.
(150Hz, 6dB/oct.)
Slide the switch to the FULL RANGE position when using an amplifier driven by an
external active crossover, the internal passive crossover network is bypassed.
Replace the rubber plug to seal the cabinet.

3. twist-loc Full Range / Biamp input

This input can be used for Full Range or Biamped Input.

4. twist-loc thRough

This jack is wired in parallel with the full range input jack for daisy chaining additional
enclosures. All 4 pins are connected in parallel with the Input.

5. 1/4” input

Use this input when using a single amp configuration. Ensure switches are in FULL

RANGE position.

6. 1/4” thRough

This jack is wired in parrallel with the 1/4” input jack for daisy chaining additional

enclosures. Ensure switches are in FULL RANGE position.

CONNECTING SCx PASSIVE SPEAKERS

The rear panels of the the SCx passive loudspeakers are fitted with both 1/4”
and 4-pin twist-loc connectors. All connectors are wired in parallel. The twist-loc
connection must be used for BIAMP.

4 pin Bi-amp Passive Subwoofers

1+ Low Freq. Positive Positive Input Positive Input
1– Low Freq. Negative Negative Input Negative Input
2+ High Freq. Positive Through Through
2– High Freq. Negative Through Through

(SCx1112, SCx1115, SCx1253)

(SCx1118)

scx1118a poweReD suBwooFeR

Carvin’s SCx1118A powered sub takes the guesswork out of selecting the
ideal power source to drive your subwoofers. Designed to handle the most
demanding applications, the amplifier is perfectly mated with the subwoofer
and enclosure, creating an optimally designed system. The SCx1118A pow­ered system makes setup and operation easier as well, with less gear to haul.
Feed your mixer’s output directly to these loudspeaker systems, and you’re
ready.

SCx1118A POWER AMP SPECS:

700w RMS Continuous/1400w Peak
THD less than .05% @ 90%, .1% at full power
Crossover: Active, 24dB/Octave @ 80 & 120 Hz
Protection systems: Short circuit, themal and Speaker Guard™ protection
Power Requirement: 120/240 VAC, 50-60Hz

scx1118a contRol panel

1. input/thRu output

on the rear control panel to connect to your mixer. Using a balanced source will
reduce noise which may be picked up by the cable. You may DAISY-CHAIN as many
systems as you wish. All connectors are wired in parallel, however if the HI PASS
switch is used the THRU range will be set by the CROSSOVER FREQUENCY switch.

2. level contRol

by setting the LEVEL at “0”. Weak input signals can be boosted by setting the
LEV EL 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.

3. poweR/pRotect/clip inDicato Rs

source first, then turn on the powered sub. When the system is active, the LED will
indicate BLUE. When shutting down turn off the powered sub first, then turn off
the mixer. If any of the power amps are clipping, the LED will indicate RED and you
should reduce the input 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 amp requires service.

4. poweR switch

unit. The POWER LED will light to show the system is on.

5. ac poweR

dedicated circuits for powered speakers.

Use a standard grounded AC cord. Whenever possible, use

6. cRossoveR Bypass switch

the internal active crossover allowing the use of an external active crossover.

7. cRossoveR FRequency switch

switch selects the internal crossover point. The 120Hz (swich out) setting is generally
used with small to mid sized speakers in your setup. The 80Hz (switch in) setting is
generally used with mid to large speakers. The SCx1112 is usable with either setting
depending on preference, but 80Hz is recommended for use with the SCx1115 and
SCx1253 to eliminate muddiness in the 120Hz range from multiple sources.

8. hi pass output switch

output of the XLR thru output from a parallel of the Input XLR to a hi pass (all
frequencies above) the crossover switch setting. This is good for going to a top
cabinet that can not handle the sub’s low frequencies.

scx1118a

Use the balanced XLR or 1/4” connectors featured

The LEVEL control adjusts the output volume. Start

Power up your audio

Push this switch to the UP position to apply power to the

The crossover bypass switch bypasses

The CROSSOVER FREQUENCY

The hi pass output switch changes the

8

scx1112, scx1115, scX1253 scx1118

4135 6

1

2

4

435 62

5

3

6

7