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HomepageMonitoringSubwoofers › Bag End ISUB-18
Bag End ISUB-18

The Bag End ISUB-18 is a self-powered 18" Studio Infrasub and has 5.1 bass management

The ISUB-18 is a self powered professional subwoofer system. It employs bass management, hi pass filtered outputs, a sealed front firing 18" cone loudspeaker, and the INFRA dual integrator driving a 700 watt power amplifier. This provides a flat acoustical response down to 8 Hertz. Six inputs allow the combining of all the bass information on 5.1 surround programs and 2 level controls and a 10dB attenuator provide relative adjustment of the bass information from the 5 full range channels and the dedicated low frequency effect channel. 5 hi pass line level filtered outputs are provided for the upper range loudspeakers and a line level INFRA output is provided for additional INFRA bass speakers. Internally set Dynamic Filter protection maintains undistorted audio reproduction under accidental overload conditions. A remote indicator module is provided and may be placed in a convenient visible location to indicate the dynamic filter protection threshold has been reached.

INFRA™ TECHNOLOGY DESCRIPTION:
The INFRA driver is operated below resonance and flattened with an electrical boosting circuit, the INFRA dual integrator. Operating below resonance the INFRA system exhibits predictable, uniform response and reproduces each note with the same emphasis, reducing the influence of the resonances found in conventional above resonance bass systems. In addition, the use of a low pass filter is eliminated (and with it the associated long variable delay) and replaced with the INFRA dual integrator with its short uniform delay. Upon close listening, it is clear that the 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 Sound Pressure Level on a calibrated SPL meter. This is because the INFRA subwoofer maintains the bass energy in a tight packet, aligned with the upper range signal, providing a greater body impact and a seamless musical connection with the main loudspeakers. Objectively, the INFRA system exhibits superior frequency and phase response.
Specifications
Output Configuration:
5 Balanced hi-pass XLR male line level
1 Balanced INFRA XLR male line level

HI-Pass Filter Frequency:
- 3 dB @ 130 Hz/-6 dB @ 95 Hz

Hi Pass Filter Slope:
12 dB/octave

Hi Pass Gain:
Unity

INFRA Output Mode:
Sum of all inputs

INFRA Module:
8 Hz dual integrator

INFRA Frequency Response:
±3 dB 8 Hz to 95 Hz (2p Steradians)
INFRA system -6 dB frequency 95 Hz (not adjustable)

INFRA Level Control:
Adjustable level control and 10 dB
attenuator on Input F

INFRA Cutoff Frequency:
Switchable 8 Hz or 20 Hz

INFRA Overload Protection:
Preset threshold Dynamic Filter circuitry
RTI: Remote Threshold Indictor
Threshold exceeded indication red LED

Amplifier Output Power:
700 Watts continuous sine wave

Enclosure:
3/4" MDF

Finish:
Black textured finish or
optional high gloss automotive finish

Grille:
Black nylon cloth on frame

Dimensions:
22"h x 21"w x 18"d
55.8cm x 53.3cm x 45.7cm

Weight:
75lb. - 34 kg
Reviews
Price
$2945.00
$2504.00
Free shipping in Canada. Conditions
Rental
 
Price/Day
Total
1 Day
$72.00
$72.00
3 Days
$48.00
$144.00
5 Days
$36.00
$180.00
12 Days
$24.00
$288.00
28 Days
$15.00
$420.00
Additional information
For more information about the ISUB-18, please visit the website of Bag End
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