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The Bag End INFRASUB-12 is a self powered subwoofer system employing a direct radiating 12" cone loudspeaker in a sealed enclosure and a 400 Watt power amplifier mounted to an aluminum plate on the back of the enclosure. The INFRASUB-12 also includes a built-in INFRA dual integrator providing a flat acoustical response down to 8 Hertz, well below the audible range of human hearing.
INFRA TECHNOLOGY:
The INFRA driver is operated below resonance and flattened with an
electrical boosting circuit, the INFRA dual integrator. Operating below
resonance the INFRA sytem 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 meets within the Time-Align®
specification and exhibits superior frequency and phase response.
Applications:
- Home Stereo
- Home Theater
- Project Studio
Specifications:
| Enclosure: |
3/4" MDF
|
Low Frequency Transducer:
|
EL-12P 12" Cone |
Amplifier Output Power:
|
400 Watts continuous sine wave |
INFRA Module:
| 8 Hz dual integrator |
System Type:
| 1.5 cu. ft. Sealed box |
| Driver Nominal Impedance:
| 4 Ohms |
Input Connectors:
|
Left, Center, and Right channel line level RCA jacks |
| Output Connectors: |
Left and Right speaker level spring terminals |
Hi-Pass Outputs:
| Left, Center and Right channel line level RCA jacks |
| Hi-Pass Filters:
| 12dB per octave, -6dB at 95 Hz |
Frequency Response:
| ±3 dB 8 Hz to 95 Hz (2pi Steradians)
INFRA system -6 dB frequency 95 Hz (not adjustable) |
Overload Protection:
| Preset threshold Concealment™ circuitry
|
Fuse:
| 6.3 Amp GDC time-lag |
Finish:
|
Black textured paint |
Grille:
|
Black nylon cloth on frame |
Magnetic Shield:
|
Low flux leakage |
Dimensions:
|
15.5"h x 18"w x 15.75"d
39.4cm x 45.8cm x 40.1cm |
Weight:
|
57 lbs. (25.86 kg) |
Shipping Dimensions:
|
21" x 25" x 21"
53.4cm x 63.5cm x 53.4cm |
Shipping Weight:
|
66 lbs. (29.94 kg) |
For more information, click here [PDF] | 
