Carvin 742-B Owners manual

MODEL 742 SPEAKER SYSTEM SPECS:

Frequency Response: 65 Hz to 17 kHz ±3 dB

Useable Low Frequency: 42 Hz (-10 dB)

Power Handling: 400w Continuous Power

Recommended Amp: 5 to 600 watts

Sensitivity: 101 dB SPL, 1 Watt @ 1 meter

Coverage Angles: 90° Horizontal, 45° Vertical

Imp: 8Ω

Horn Driver Protection: Yes

Inputs/Outputs: Two 1/4"

Woofer Enclosure Type: Closed Box

Enclosure Covering: Black Duratuff II™

Dim/Wt: 20"W x 14"D x 26"H, 46lbs.

Warranty: One Year

Options: Cover: CVS742

742 FREQUENCY RESPONSE

76-00742 0902

12340 World Trade Drive, San Diego, CA 92128

[phone]

www.carvin.com

SPEAKER CABLES

The PH50 is our standard cable when purchasing a complete sound system.
These cables feature 1/4” plugs and heavy 16 gauge copper wire. The PH50 is
adequate for lengths up to 50’ under normal use. You can DAISY-CHAIN up to one
additional speaker per cable by using the unused 1/4” OUTPUT” jack (right side)
on your speaker jack plate. Be sure to note the total impedance to the amp so it is
not lower than it’s recommended impedance. See Typical Loudspeaker Impedance

Configurations.

SUGGESTIONS FOR OPTIMAL PERFORMANCE

To help control feedback, use a graphic equalizer. Keep the speakers in front of
the microphone. Never direct the microphone towards the speaker. For greater
coverage, add additional monitors.

742

Serial No.

MADE

AUS

IN THE

POWER RATING: 400 Watts

PRO SOUND REINFORCEMENT

IMPEDANCE: 8 Ohms

JACKS WIRED

PARALLEL

EXT. SYSTEMINPUT

TWIST-LOK

1+1–SIGNAL

GROUND

2+2–NOT USED

NOT USED

CARVIN ENGINEERING DATA 742 SPEAKER SYSTEM INSTRUCTIONS

742

Congratulations on your selection of the 742

monitor speaker.

The 742
is our top of the line 15” monitor speaker designed to cut through on
any stage. This monitor will easily handle 400 watts and at the same
time offer studio quality sound even when pushed to extreme levels.
Because of it’s controlled dispersion, feedback problems are minimized.

RECEIVING INSPECTION

INSPECT YOUR SPEAKER FOR ANY DAMAGE

which may have occurred during
shipping. If any damage is found, please notify the shipping company & CARVIN.
SA

VE THE CARTON & ALL PACKING MATERIALS. In the event you have to re-ship your
unit, always use the original carton and packing material. CARVIN and the shipping
company are not liable for any damage caused by improper packing.
SAVE YOUR INVOICE. It will be required for warranty service if needed in the future.
SHIPMENT SHORTAGE. If you find items missing, they may have been shipped
separately. Please allow several days for the rest of your order to arrive before inquiring.
RECORD THE SERIAL NUMBER

on the enclosed warranty card or below on this manual

for your records. Return the warranty card with your name and comments to us.

WARRANTY

Parts and labor are covered for 1 year on manufacturer’s defects. Warranty does not
cover burned out drivers caused by excessive power or distortion, or physical damage
caused by general use, moisture or dust. CAUTION: Distortion from power amps can
destroy drivers much faster than clean power. Contact Carvin’s Customer Service at
800-854-2235 or [e-mail]. Customer is responsible for shipping
charges.

TYPICAL LOUDSPEAKER IMPEDANCE CONFIGURATIONS

Individual speaker or speaker cabinet wiring examples for total impedance.

For your records, you may wish to record the following information.

Serial No._____________________ Invoice Date_______________

SERIES CONNECTION

16Ω TOTAL IMPEDANCE

+

+

+

PARALLEL CONNECTION

4Ω TOTAL IMPEDANCE

+

+

+

8Ω TOTAL

IMPEDANCE

SERIES/PARALLEL

CONNECTION

8Ω TOTAL IMPEDANCE

+

+ +

+

+

+

+

8Ω

8Ω

8Ω

8Ω

8Ω

8Ω

8Ω

4Ω8Ω

8Ω

16Ω8Ω8Ω

REAR CONNECT PLATE

Two professional Twist-Lok™ connectors and two standard 1/4” phone jacks are
featured. Use either the 1/4” or Twist-Lok™ connectors for connecting to the
power amp and daisy chaining to an additional speakers.

See other side for SPS™ Powered Speaker operation

Twist-Lok™ & 1/4”
through connectors for
additional speakers

Twist-Lok™ & 1/4” inputs
from power amp output.

c

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 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.

SPS™ 742P POWERED AMP SPECS

Frequency Response: 20 Hz to 20 kHz ±1 dB

THD: less than .1%

Power : 300 watts @ 8Ω

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 ultra­fast 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!

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 742 enclosure for specs, warranty and
precautions on the other side.

REAR POWERED CONNECT PLATE

742P

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

742P POWERED SPEAKER

INSTRUCTIONS