Bag End INFRA-MXB Datasheet

INFRA - MXB

BAG END

S P E C I F I C A T I O N S

INFRASUB™ TECHNOLOGY

INFRA-M B

LOW FREQUENCY INTEGRATOR

MODULAR SOUND SYSTEMS, INC. ALGONQUIN, ILLINOIS

M

ADE IN U.S.A

B

ALANCED INPUT: PIN 1 SHIELD, PIN 2 +SIGNAL, PIN 3 -SIGNAL

OUTPUT: PIN 1 SHIELD, PIN 2 +SIGNAL, PIN 3 -SIGNAL

NBALANCED INPUT: JUMPER PINS 1 AND 3 SHIELD, PIN 2 +SIGNAL

U

O

UTPUT: PIN 1 SHIELD, PIN 2 +SIGNAL, PIN 3 NO CONNECTION

GENERAL SPECIFICATIONS

x

Input Connectors:

XLR female

Maximum Input Signal:

4.5 V (+16 dBu)

Output Connectors:

XLR male

Maximum Output Signal:

4.5 V (+16 dBm)

Balanced In/balanced out:

+6dB gain

Balanced in/unbalanced out

Unity gain

Unbalanced in/balanced out:

Unity gain

Unbalanced in/unbalanced out:

Unity gain

Output Impedance:

< 50 Ohms

Power-on Indication:

Green LED

Operating Input Voltage:

12 - 15 VDC

Operating Current Required:

200 mA

Input Voltage Connector:

Miniature DC 2.5 mm

Input Voltage Polarity:

Center pin +

INFRA

INTEGRATOR

INFRA SPECIFICATIONS HI PASS SPECIFICATIONS

INFRA GAIN

Maximum INFRA Gain:

THRESHOLD

DYNAMIC FILTER

RIGHT HI OUT LEFT HI OUT

Hi Pass Gain: Unity

10 dB

Hi Pass Filter Frequency

Maximum INFRA Attenuation:

10 dB

INFRA Cutoff Frequency
Programming:

Plug in resistors

INFRA Cutoff Frequency:

8 Hz to 40 Hz

Programming:

Plug in resistors

Factory Set Hi Pass Filter
Frequency:

- 3 dB @ 130 Hz/-6 dB @ 97 Hz

Hi Pass Filter Frequency Range:

50 Hz to 200 Hz

Factory default 18 Hz

Hi Pass Filter Slope:

INFRA Output Mode:

12 dB/octave

Sum in Stereo Mode

Hi Pass Circuit Noise:

Nominal Dynamic Filter

< -90 dBu (20 Hz to 20 kHz)

Threshold: 0 dBu Output

Hi Pass Dynamic Range:
Minimum Dynamic Filter
Threshold: -10 dBu Output

Maximum Dynamic Filter
Threshold: +10 dBu Output

Maximum Dynamic Filter
Reduction Capability at 18Hz:

30 dB

Dynamic Filter Threshold
Exceeded Indication:

Red LED

INFRA Circuit Noise:

< -90dBu (20 Hz to 20 kHz)

INFRA Dynamic Range:

> 105 dB (20 Hz to 20 kHz)
(bandwidth unweighted)

INFRA Output:

Use with Infrasub™ or INFRA™
type loudspeakers only.

> 105 dB (20 Hz to 20 kHz)

(bandwidth unweighted)

PHYSICAL SPECIFICATIONS

Enclosure:

Black powder coated steel

Enclosure Mounting:

1U EIA rack (1.75")

Dimensions:

1.75"h x 19"w x 5.25"d

5 cm x 49 cm x 14 cm

Weight:

5 lbs.

2.3 kg

Shipping Dimensions:

6" x 22" x 12"

16 cm x 59 cm x 31 cm

Shipping Weight:

7 lbs.

3.2 kg

INFRA SUM OUT

RIGHT IN LEFT IN

12 VDC
POWER

Applications:

Recording Studios

Film Post Production

Video Editing Suites

Mastering Labs

Theatrical Production

Cinema Reproduction

Home Theater Systems

Stadiums and Arenas

Concert Sound Reinforcement

Musical Instrument Systems

Description: The Bag End INFRA-

MXB system module is a two-chan­nel loudspeaker controller designed
for stereo 2-way operation with a
mono sum INFRA low frequency out­put. The INFRA-MXB incorporates
the INFRA dual integrator, frequen­cy dividing, and system protection
in an easily operated configuration
where the system parameters are
internally preset or available on
front panel rotary controls.

Use INFRA™ output with
Bag End Infra loudspeakers only.

BAG END Loudspeakers

1201 Armstrong Street

Algonquin, Illinois

60102 USA

Voice 847 658 8888

Fax [phone]

www.bagend.com

BAG END Loudspeakers 1201 Armstrong Street Algonquin, Illinois 60102 USA Phone [phone] Fax [phone]

INFRATM, CVR LimiterTMand BAG END®are trademarks of Modular Sound Systems, Inc.

INFRA-MXB

General: Upon
detailed evaluation
and analysis of an
INFRA system, it is
clear that the fun­damental impres­sion of power and impact is greater
with an INFRA system when com­pared to conventional bass sys­tems. This is true even when the
two systems will measure the exact
same calibrated dB sound pressure
level. We believe this is because an
INFRA system compacts the bass
energy into a tight packet aligned
with the upper range signal rather
than the typical time smears inher­ent in conventional bass systems.
Objectively, the INFRA system
exhibits superior phase response
and low group delay.

The front panel controls are uni­formly calibrated in even dB incre­ments with a 20 dB control range
and are flush mounted so that the
control settings are not accidentally
changed.

The INFRA-MXB operates on 12 Volt
DC which insures complete interna­tional compatibility and easily
allows custom portable and auto­motive applications.

The INFRA-MXB requires no connec­tion to the output of the amplifier. To
set the Dynamic Filter protection
threshold, refer to the amplifiers input
sensitivity and adjust the front panel
control accordingly.

Dynamic Filter: The Dynamic Filter
circuit is a complimentar y technolo­gy to the INFRA. Set to the proper
threshold, it insures that unexpect­edly large signals will not overload
the system resulting in possible
damage or audible distortion. This
allows high level operation close to
the maximum system capabilities

without fear of accidental overload.
The Dynamic Filter is not a band
limiter. It automatically reduces the
low frequency extension and leaves
the rest of the bass unaffected.

Hi Pass: The Infra-MXB includes a
stereo Hi pass section for each
channel. This section provides a
very low noise unity gain Hi pass
filter factory set to roll off at 12dB
per octave. The filter frequency is
factory set to -3dB at 130 Hertz.
This makes the -6dB point of 95
Hertz the standard factory set
crossover frequency. This setting
will be correct for most applications.
The frequency can be changed for
special application by changing
internal socketed resistors.

Polarity: The INFRA and Hi pass
polarity in the INFRA-MXB have
been internally set for proper cross ­over functions. A simple polarity
tester may show reversed polarity
as referenced to DC. In audio, we
listen to AC signals and the best
actual polarity determination is
made at the crossover point with
an asymmetrical signal. Under
these conditions, the INFRA-MXB
will exhibit the correct polarity at
crossover and provide the most
even blend between the upper
range system and the INFRA speak­ers. Reversing the INFRA polarity
will add energy in the upper bass
region near crossover and may
mask the lower bass output.

What is INFRASUB™ technology?

Infrasub is Bag End's second generation
dual integrator bass extension technology.
Utilizing Surface Mount Technology, the
Infrasub technology provides improve­ments over earlier dual integrators
through modern manufacturing. The
extended low frequency approach insures
that the lowest 3 octaves of the audio
and sensory spectrum are reproduced
acoustically in the same time and fre­q

uency relationship as the electrical input

to the system.

A fundamentally new approach to low fre­quency reproduction, the INFRA™ employs
electronic compensation to the uniform
response that a sealed box loudspeaker
system exhibits below its resonance fre­quency. The resultant frequency response
can be extended well below the audible
range while at the same time greatly
reducing the influence of the system reso­nance. An INFRA™ system reproduces
each note with precision and uniformity
while maintaining a flat frequency and
phase response, eliminating the tendency
to emphasize the notes around resonance
as in conventional bass systems. The
enhanced INFRA™ dual integrator pro­vides both a very flat response below res­onance and the high frequency roll-off
above resonance, for crossover to the
midrange driver, without the use of con­ventional low pass filters and the delay
typically introduced by them. An inherent
bonus of the process requires the enclo­sures to be small. For example, a double
10-inch INFRA™ system measures only
13" x 22" x 13" (1.5 ft

6 Hz 200 Hz

Electrical frequency response of the
INFRA™ dual integrator

Acoustical output of the INFRA™
system

Acoustical frequency response of the
INFRA™ loudspeaker in a sealed box

Impedance amplitude of INFRA™
loudspeaker in a sealed box

3

).

BAG END Loudspeakers 1201 Armstrong Street Algonquin, Illinois 60102 USA Phone [phone] Fax [phone]

INFRATM, CVR LimiterTMand BAG END®are trademarks of Modular Sound Systems, Inc.