BAG END
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D18E-R
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APPLICATIONS:
O
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PA Systems
Auditorium Reinforcement
Discotheque Subwoofer
Cinema Subwoofer
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.
Frequency Response:
8 Hz to 95 Hz ±3 dB
(2π Steradians, with
8 Hertz Integrator)
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.
Low Frequency Transducers:
2 - 18" INFRA cone
3" Voice coil
12O oz. Magnet
Sensitivity:
100 dB SPL @ 80 Hz
1W @ 1m) (for additional
information, see INFRA Speaker
Sensitivity Technical Note)
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.
Input Connectors:
2 - Dual banana
2 - Neutrik Speakon
Power Handling:
800 W continuous sine wave
800 W instantaneous peak
SYSTEM COMPONENTS
Enclosure:
3/4" 7-ply poplar plywood
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
ACOUSTIC AND ELECTRICAL
System Type:
Infrasub sealed chamber (3 ft3)
Impedance:
4Ω
PHYSICAL
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
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.
Shipping Weight:
151 lbs.
69 kg
BAG END Loudspeakers
22272 Pepper Road
Barrington, Illinois
60010 USA
Voice 847 382 4550
Fax 847 382 4551
www.bagend.com
Crossover Network:
Requires INFRA Integrator
INFRA™, Infrasub™ and BAG END® are trademarks of Modular Sound Systems, Inc.
BOLT 1/4"−20 x 1 1/2"
PHIL RND HD Z−111 (4)
D18E-R
POLE MOUNT
ADAPTER
LSD−35
SCREW #10 x 5/8"
PHIL FH SMS
Z−138 (32)
PLASTIC CORNER
C−40 (8)
JACKPLATE
ASSEMBLY
Z−312
GASKET LOOP
Z−519
SCREW #8 x 3/4"
PHIL PH SMS
Z−101 (8)
GRILLE VINYL
COATED STEEL
AFG−1
BOLT 5/16"−18 x 1
1/2" SOCKET HEAD
CAP SS Z−105 (8)
LATCH
Z−205 (2)
HANDLE
H−10 (8)
LOGO
Z−301
LATCH
COVER
Z−206 (2)
LATCH STRIKE
Z−207 (4)
GASKET TAPE
Z−516
SCREW #8 x 1/2"
PHIL PH SMS
Z−100 (8)
SCREW #8 x 3/4"
PHIL PH SMS
Z−101 (112)
DRIVER
EL−18A (2)
SPEAKER MOUNTING
CLAMP Z−208 (8)
WASHER #8 BLACK
NYLON Z−110 (6)
PROTECTIVE
GRILLE COVER
B O L T 1/4"−20 x 1 1/4"
HEX HD Z−112 (8)
CASTER
3 1/2" RIGID
Z−221 (2)
SCREW #8 x 3/4"
PHIL FH SMS
Z−103 (6)
NOT SHOWN:
SHIPPING CARTON Z−603 (1)
PLASTIC BAG Z−627 (1)
EDGE GUARD Z−630 (30)
SYSTEM SCHEMATIC
+ RED
BANANA JACK
− BLACK
LOW
+ RED
− BLACK
DRIVER
NEUTRIK
SPEAKON
NL4MP
DRIVER
BANANA JACK
HIGH
JACKPLATE ASSEMBLY
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 847 382 4550 Fax 847 382 4551
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