Magnepan DWM User Manual
Magneplanar!
DWM Bass Panel!
Instruction Manual
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Table of Contents
1. Introduction/General Description 2
2. Carton Contents 2
3. Packaging 2
4. Installation and Hookup 2
5. Placement 3
6. Phasing 4
7. Bass Attenuation 6
8. Midbass Attenuation 6
9. Better bass for full-range Maggies 6
10. Service and Shipping 8
11. Specications 8
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1. Introduction/General Description
e Magneplanar DWM Bass Panel is a dipole, thin-lm planar/magnetic
woofer which is a derivative of the MG 20.7 DiPlanar bass panel technology.
e DWM Bass panel has one diaphragm which is driven by two separate
ampliers (typically the front le and right channels). When two Bass Panels
are used, one of the voice-grids is not used. A built-in crossover provides a
high-pass output for use with “small” Magneplanars.
2. Carton Contents
1 - DWM Bass Panel with base
1 - Magnepan “Shaped” Pink Noise CD Test Disk
2 - 2 ohm, 25 watt resistors
1 - Hex Wrench
1 - Speaker Logo
1 - Owner's Manual
2 - 1/4-20 x 1" Truss Head Machine Screws
Packaging Instruction Sheet
3. Packaging
Save all packaging. e DWM Bass Panel can be shipped safely only in the
original packaging. Should you discard it, packaging is available from
Magnepan.
4. Installation and Hookup
Remove the 1/4-20" screws from the bottom of the Bass Panel. Discard screws.
Install the base with the 2 screws in the Literature Kit. It may be necessary to
realign the dowel nut in the speaker before installing the base and screws.
Connect the speaker wire from the amplier to the amplier input on the
DWM, observing polarity. Connect the “small” Magneplanar to the output of
the DWM, observing polarity. (Note- ere are no le or right inputs or
outputs on the DWM Bass Panel.)
If 2 Bass Panels are used for a 2-channel setup, one set of connections is used
for each Bass Panel.
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5. Placement
As a general rule, dipole speakers produce the deepest and most linear bass
and midbass when positioned approximately 4-6 feet from the front wall or 1/3
of the way into a room. is rule may conict with the necessity to have
correct time alignment with the “small” Maggies. Since rooms vary greatly,
these setup instructions are principles of operation and specic and detailed
instructions are not possible. Magnepan and our dealers can provide advice on
the specics of your room.
It is generally understood that placement of subwoofers is very exible. While
subwoofers do offer more latitude in placement due to the long wavelengths at
low frequencies, technically, there is an ideal place in a given room for
optimum subwoofer performance. e DWM is a woofer, not a subwoofer.
And the superior performance of the DWM, as compared to a subwoofer, is
due in part, to extremely wide bandwidth (at to 5 kHz). e DWM can
seamlessly cross over at a higher frequency to any of the limited bandwidth
“Maggie” models. However, the higher crossover points require proper time
alignment to achieve the most seamless blend between the DWM Bass Panel
and the limited bandwidth Magneplanar. erefore, the DWM should be equidistance from the listener to the limited bandwidth Magneplanar. Minor
adjustments from that position are oen necessary for “ne tuning” as
described under “Phasing” below.
e DWM should be oriented so it is perpendicular to the side wall and
playing down the length of the room as shown in Fig. 1 below.
e DWM Bass Panel will give the lowest frequency response if a boundary is
used to reduce dipole cancellation of bass frequencies. A placement along a
wall or next to a cabinet or piece of furniture will reduce dipole cancellation.
If two DMWs are used, the midbass response may be improved and smoothed
by placing the bass panels at different distances relative to the listener.
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Revision-- 10-3-12
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