Bag End D18E-R Specifications

ACOUSTIC AND ELECTRICAL

Enclosure:

3/4" 7-ply poplar plywood

Low Frequency Transducers:

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

Input Connectors:

2 - Dual banana
2 - Neutrik Speakon

Grille:

16 Gauge black vinyl coated
perforated steel

Standard Hardware:

8 - Recessed handles
1 - 35 mm Pole mount adapter
8 - Machined aluminum speaker
mounting clamps
8 - Interlocking corners
1 - Protective grille cover
2 - 3 1/2" Rigid casters

SYSTEM COMPONENTS

PHYSICAL

System Type:

Infrasub sealed chamber (3 ft

3

)

Impedance:

4 Ω

Crossover Network:

Requires INFRA Integrator

Finish:

Black carpet

Dimensions:

44"h x 23"w x 18.5"d
112 cm x 59 cm x 47 cm

Weight:

140 lbs.
64 kg

Shipping Dimensions:

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

Shipping Weight:

151 lbs.
69 kg

D18E-R

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

D18E-R

The D18E-R is a very high output INFRA subwoofer sys­tem designed to provide high fidelity extended low frequency
audio reproduction from a relatively small enclosure. The D18E­R provides perfectly flat response down to 8 Hertz when used in
conjunction with the 8 Hertz Integrator. Designed for portable
use, the D18E-R includes handles, protective corners, casters,
a grille cover and a pole mount adapter on a carpeted enclo­sure.

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.

APPLICATIONS:

PA Systems

Auditorium Reinforcement

Discotheque Subwoofer

Cinema Subwoofer

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

BAG END Loudspeakers

22272 Pepper Road

Barrington, Illinois

60010 USA

Voice 847 382 4550

Fax [phone]

www.bagend.com

SYSTEM SCHEMATIC

D18E-R

SSCCRREEWW

#8 x 3/4"
PHIL PH SMS
Z−101 (8)

LLOOGGOO
Z−301

DDRRIIVVEERR
EL−18A (2)

GGRRIILLLLEE

VINYL
COATED STEEL
AFG−1

WWAASSHHEERR

#8 BLACK

NYLON Z−110 (6)

SSCCRREEWW

#8 x 3/4"
PHIL FH SMS
Z−103 (6)

GGAASSKKEETT TTAAPPEE
Z−516

GGAASSKKEETT LLOOOOPP
Z−519

JJAACCKKPPLLAATTEE
AASSSSEEMMBBLLYY
Z−312

NNOOTT SSHHOOWWNN::
SHIPPING CARTON Z−603 (1)

PLASTIC BAG Z−627 (1)
EDGE GUARD Z−630 (30)

BBOOLLTT

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

SSPPEEAAKKEERR MMOOUUNNTTIINNGG
CCLLAAMMPP

Z−208 (8)

SSCCRREEWW

#10 x 5/8"
PHIL FH SMS
Z−138 (32)

PPOOLLEE MMOOUUNNTT
AADDAAPPTTEERR

LSD−35

BBOOLLTT

1/4"−20 x 1 1/2"

PHIL RND HD Z−111 (4)

PPLLAASSTTIICC CCOORRNNEERR
C−40 (8)

SSCCRREEWW

#8 x 3/4"
PHIL PH SMS
Z−101 (112)

HHAANNDDLLEE
H−10 (8)

LLAATTCCHH SSTTRRIIKKEE
Z−207 (4)

CCAASSTTEERR
3 1/2" RIGID
Z−221 (2)

BBOOLLTT

1/4"−20 x 1 1/4"

HEX HD Z−112 (8)

LLAATTCCHH
CCOOVVEERR
Z−206 (2)

LLAATTCCHH
Z−205 (2)

SSCCRREEWW

#8 x 1/2"
PHIL PH SMS
Z−100 (8)

PPRROOTTEECCTTIIVVEE
GGRRIILLLLEE CCOOVVEERR

JACKPLATE ASSEMBLY

BANANA JACK

HIGH

+ RED

+ RED

LOW

− BLACK

− BLACK

DRIVER

DRIVER

NEUTRIK
SPEAKON
NL4MP

BANANA JACK

The Neutrik Speakon NL4MP connector is a keyed, high current, four conductor device which allows both the high and low frequency
signals for a bi-amped loudspeaker system to run through the same multi-conductor cable. Note that all four conductors on both
connectors are wired in parallel, but only two conductors are connected to the drivers in the enclosure. This permits an easy paral­lel connection to other similar loudspeakers (if your amplifier can handle the low impedance load!) and allows the use of a short
“jumper” to connect to the mid/high speakers in a bi-amped system. Banana jacks are also provided on each circuit.

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