Bag End D18E-I Specifications

ACOUSTIC AND ELECTRICAL

Enclosure:

18 mm 13-ply birch plywood

Low Frequency Transducers:

2 - 18" INFRA cone
3" Voice coil
12O oz. Magnet

Input Connectors:

Cinch 142 screw terminal
barrier strip

Grille:

16 Gauge black vinyl coated
perforated steel

Standard Hardware:

8 - Machined aluminum speaker
mounting clamps

Optional Hardware:

Rigging points

SYSTEM COMPONENTS

PHYSICAL

System Type:

Infrasub sealed chamber (3 ft

3

)

Impedance:

4 Ω

Crossover Network:

Requires INFRA Integrator

Finish:

Black paint

Dimensions:

43"h x 22"w x 18"d
110 cm x 56 cm x 46 cm

Weight:

126 lbs.
58 kg

Shipping Dimensions:

20" x 45" x 25"
51 cm x 115 cm x 64 cm

Shipping Weight:

138 lbs.
63 kg

D18E-I

BAG END

SPECIFICATIONS

Frequency Response:

8 Hz to 95 Hz ±3 dB
(2π Steradians, with
8 Hertz Integrator)

Sensitivity:

100 dB SPL @ 80 Hz (1W @ 1m)
(for additional information,
see INFRA Speaker Sensitivity
Technical Note)

Power Handling:

800 W continuous sine wave
800 W instantaneous peak

APPLICATIONS:

Film & Video Post Production

5.1 Digital Format Subwoofer
Recording Studio
PA System Installations
Home Theater
Discotheque

D18E-I The D18E-I is a very high output INFRA subwoofer sys­tem designed to provide high fidelity extended low frequency
audio reproduction from a relatively small enclosure. The D18E-I
provides perfectly flat response down to 8 Hertz when used in
conjunction with the 8 Hertz Integrator. Designed for permanent
installation, the D18E-I offers a flat black painted finish and a
black coated steel grille.

ABOUT INFRASUB TECHNOLOGY

Almost all specifications for
subwoofer systems are fixated on the frequency response
domain. However, the impression of power and quality is equal­ly related to the time domain performance of a system.
Because of the long wavelengths of low frequencies, this is par­ticularly true with subwoofers.

Likewise, the maximum SPL is not a very reliable way to judge
the impact of a subwoofer. A poor time domain performer will
not have the same impact or natural sound as a time correct
INFRA system.

The reason that INFRA technology sounds dramatically better
than the others is because of their superior time domain perfor­mance. 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.

Conventional sub designs perform so poorly in the time domain
because designers have used methods that sacrifice the phase
response for more control over the frequency response (e.g.,
steep low pass filter slopes, vented speaker enclosures, and
narrow bandwidth systems). With the INFRA technique, we do
not degrade the phase response while extending the frequency
response.

While the INFRA dual integrator does function as the system
crossover, it does so without using a low pass filter. Adding a
low pass filter, analog or digital, will have a degrading effect on
the time domain performance of the INFRA subwoofer. A low
pass filter adds signal delay to the sound which varies with fre­quency. Also, narrowing the pass band increases the influence
of the rolloff on both ends of the subwoofer spectrum. The
result is the smearing of the arrival times of the low frequency
sound components, changing the timbre and downgrading the
impact of transient sounds.

The Bag End INFRA subwoofers are designed as no-compro­mise, high fidelity reproduction systems. We believe they are
the finest subs available, regardless of price.

BAG END Loudspeakers

22272 Pepper Road

Barrington, Illinois

60010 USA

Voice 847 382 4550

Fax [phone]

www.bagend.com

INFRA™, Infrasub™ and BAG END®are trademarks of Modular Sound Systems, Inc.

BARRIER STRIP INPUT

+ RED

− BLACK

SYSTEM SCHEMATIC

DRIVER

DRIVER

D18E-I

LOGO
Z−301

DRIVER
EL−18A (2)

GRILLE

VINYL
COATED STEEL
AFG−1

WASHER

#8 BLACK

NYLON Z−110 (6)

SCREW

#8 x 3/4"
PHIL FH SMS
Z−103 (6)

GASKET TTAPE
Z−516

GASKET
LOOP
Z−519

NOT SSHOWN:
SHIPPING CARTON Z−603 (1)

PLASTIC BAG Z−627 (1)
CORNER GUARD Z−629 (8)
EDGE GUARD Z−630 (32)

BOLT

5/16"−18 x 1 1/2"
SOCKET HEAD CAP SS
Z−105 (8)

SPEAKER MMOUNTING
CLAMP

Z−208 (8)

SCREW

#8 x 3/4"
PHIL PH SMS
Z−101 (4)

BARRIER SSTRIP
CINCH 142
Z−322

+

-

BAG END Loudspeakers 22272 Pepper Road Barrington, Illinois 60010 USA Phone [phone] Fax [phone]