Inter-m DIV-9123 Operating Manual

DIV-9123

Electronic Crossover

Copyright 2004 Inter-M Corporation

DIV-9123 Electronic Crossover

Contents

Welcome ..................................................................................................................................... 3

Unpacking ............................................................................................................................... 3

Warnings .................................................................................................................................. 3

Operation................................................................................................................................. 5

Electronic Crossover ............................................................................................................... 6

Features ....................................................................................................................................... 6

Front Panel Controls.................................................................................................................... 7

Rear Panel Controls .................................................................................................................... 8

Connections................................................................................................................................ 9

Schematic ................................................................................................................................. 10

Specifications............................................................................................................................ 11

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DIV-9123 Electronic Crossover

Welcome

A personal welcome to you from the management and employees of Inter-M

Thank you for purchasing this fine Inter-M product. All of us here at Inter-M are dedicated
to providing you the highest quality products and the best value.

We sincerely trust this product will provide you with years of satisfactory service, but if
anything is not to your complete satisfaction, we will endeavor to make things right.

Welcome to Inter-M, and thank you for becoming a part of our worldwide extended
family!

Unpacking

Although your DIV-9123 is neither complicated nor difficult to operate, we recommend
you take a few minutes to read this brief manual and familiarize yourself with the
important information regarding product features, setup and operation.

As with most electronic devices, we strongly recommend you retain the original
packaging. In the unlikely event the product must be returned for servicing, the original
packaging (or reasonable equivalent) is required.

Warnings

Environment

Never place this product in an environment that could alter its performance or reduce its
service life. Such environments are usually characterized by high levels of heat, dust,
moisture, or vibration.

Safety

1. Read these instructions carefully.

2. Follow all instructions.

3. Keep all warnings.

4. Do not operate this apparatus near water.

5. Clean only with a damp cloth.

6. Do not block any of the ventilation openings.

7. Install only in accordance with the instructions in this manual.

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DIV-9123 Electronic Crossover

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other
devices (including amplifiers) that produce heat.

9. Do not defeat the safety purpose of the polarized or grounding type plug. A polarized
plug has two blades, with one wider than the other. A grounding type plug has two
blades and a third grounding prong. The wide blade or the third prong is provided for
your safety. If the provided plug does not fit into your outlet, consult an electrician for
replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched, particularly at plugs,
convenience receptacles, and the point where it is attached to the apparatus.

11. Use only the attachments/accessories specified.

12. Use only with a cart, stand, tripod, bracket, or table specified, or sold with the
apparatus. When a cart is used, use caution when moving the cart/apparatus
combination to avoid overturning.

13. Unplug this apparatus during lightning storms or when unused for long periods of
time.

14. Refer all servicing to qualified service personnel. Servicing is required when the
apparatus has been damaged in any way, such as power supply cord or plug is
damaged, liquid has been spilled or objects have fallen into the apparatus, the
apparatus has been exposed to rain or moisture, does not operate normally, or
has been dropped.

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DIV-9123 Electronic Crossover

Operation

Make certain speakers and input sources are properly connected before switching the
unit on.

Keep volume levels at minimum gain before switching on.

NOTE: The system’s operation is delayed by approximately three seconds after pressing
the AC Mains power switch. This is due to the built-in protection circuitry, designed to
protect the speakers and other system components.

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DIV-9123 Electronic Crossover

DIV-9123
Electronic Crossover

Features

Two-way Stereo or Three-way Mono Operation

• Functions in either mode with extra mono subwoofer channel.

• Two-way stereo mode: low, high.

• Three-way mono mode: low, mid, high.

XLR Inputs and Outputs

• Balanced, line-level, professional connections.

80Hz – 8kHz Crossover Frequency

• Precise rotary controls allow accurate selection of crossover frequencies.

Mono Subwoofer Output

• Mono summed circuit for single subwoofer systems.

• Adjustable from 60Hz to 250 Hz with a slope of 24dB per octave.

• 30Hz high-pass filter protects amps and speakers from subsonic noise.

Mute Switch on each Output

• Enables easy system setup.

Ground Lift

• Simple switching for eliminating ground loops.

<0.01% THD

• Low harmonic distortion rating under .01%.

Rack Mountable

• 1RU, single rack space form factor.

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DIV-9123 Electronic Crossover

Front Panel Controls

1. Input Level Controls

Clockwise rotation yields an increase in level.

2. Peak LED

When the maximum output level exceeds +4dBu (at 0db=0.775 V rms) this peak
LED illuminates. User Tip: Decrease input level until LED stops illuminating.

3. Output Level Controls

Allows individual output level adjustment of high, mid, and low frequencies.

4. Mute Switch

Allows adjustment of each frequency band without affecting other frequency
band levels.

5. Crossover Frequency Controls

Selects the crossover point between frequency bands.

6. Frequency Range Switches

Selects crossover frequency sweep ranges.

7. High Pass Filter Switch

Enables a 30Hz (18dB/oct) filter for eliminating subsonic rumble.

8. Power Switch
Pressing this switch switches the unit on, as indicated by the Power LED in the
switch. Pressing it again switches the unit off.

9. Mode Indicator
Indicates stereo mode operation when illuminated.

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DIV-9123 Electronic Crossover

Rear Panel Controls

1. AC Connector

Connect the supplied standard AC input cable here.

2. AC Fuse Holder

This holder contains the AC overload protection fuse. If the fuse has blown out,
replace it with a fuse of the same type and rating.

If the fuse continues to blow, refer servicing to a qualified service technician.

3. Ground Lift Switch
For eliminating ground loops.

4. Crossover Output Connectors

Convenient XLR connectors for two band stereo connections to amplifiers.

5. Input Connectors

Two balanced line level inputs on XLR jacks.

6. Subwoofer Output Connector

XLR output of a summed mono signal for connection to a subwoofer amplifier.

7. Mode Selector

Selects two-way stereo or three-way mono mode. Mode indicator located on
front panel.

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DIV-9123 Electronic Crossover

Connections

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DIV-9123 Electronic Crossover

Schematic

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DIV-9123 Electronic Crossover

Specifications

ELECTRICAL

Crossover Mode 2-way stereo / 3-way mono
Crossover Frequency 80Hz to 8KHz (Sweepable)
Crossover Cutoff Slope 24dB/Octave
Subwoofer Frequency 60Hz to 250Hz (Sweepable) 24dB/Octave

High Pass Filter 30Hz, 18dB/Octave
Input Level/Connector 0dBu (0.775V rms)/Balanced XLR
Input Impedance 20KΩ active balanced
Maximum Input +20 dBu

Output Level/Connector 0dBu (0.775 Vrms)/Balanced XLR
Output Load Impedance 600Ω rated active balanced
Maximum Output +20 dBu

Frequency Response 20Hz – 20KHz (±1dB)
Distortion (THD) Less than 0.1%
Signal-to-Noise Ratio Greater than 75dB

GENERAL

Power Source 100-120 or 220–240VAC, 50/60Hz
Power Consumption 15 W
Power Switch Push-on/Push-off with integral LED
Weight 4 Kg (8.8 lbs.)
Dimensions 482 (W) x 44 (H) x 280 (D) mm

19 (W) x 1.75 (H) x 11 (D) inches

Specifications and design subject to change without notice for improvements.

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DIV-9123 Electronic Crossover

Inter-M, Ltd. (Korea) began operations in 1983.

Since then, Inter-M has grown to become one of the largest manufacturers
of professional audio and commercial sound electronics equipment in the world.

Inter-M has gained worldwide recognition for its own branded products,
as well as private label manufacturing of electronics sold under other names (OEM).

The company is no longer just a Korean company, but rather a global company
that is truly international in scope, with factories and offices in Korea and China,
and sales and marketing operations located in Japan, Europe, and the U.S.A.

With more than 850 employees around the globe, Inter-M is well-poised for further growth and
expansion.

INTER-M AMERICAS, INC.

1 EAST BEACON LIGHT LANE, CHESTER, PA, USA 19013-4409
TEL: [phone], FAX: [phone]
Home Page:http://www.inter-m.net, E-mail: [e-mail]

INTER-M Corporation

SEOUL OFFICE: 653-5 BANGHAK-DONG, DOBONG-KU, SEOUL, KOREA
TEL: [phone]~8, FAX: [phone]
Home Page:http://www.inter-m.com, E-mail: [e-mail]

0704DIV9123 PRINTED IN KOREA

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