How to use the DWM Bass Panel with full-range Maggies
(See MMG instructions for use with the MMG and DWM Bass Panel)
- One (or two) DWM Bass Panels can be used with a high-current amplifier by hooking the Bass Panel(s) to the full-range model in parallel. For parallel operation, the amplifier should come close to doubling the power at 4 ohms (compared to the 8 ohm power). For receivers and amplifiers of modest current capacity, separate amplifiers will be needed to drive the DWM Bass Panel.
- Large gauge speaker wire for the Bass Panel is not necessary. A resistor maybe needed to lower the output of the Bass Panel. Small-gauge, low-cost speaker wire can achieve some of the reduction in output.
- For parallel connection, a method of attaching the plus (+) and minus (-) of the full-range speakers to the DWM Bass Panel plus (+) and minus (-) inputs will depend upon the type of speaker connection. For example, a double banana plug has a means of connecting two wires to the same terminal. It may be necessary to consult a technician for the best solution to your installation.
- Phasing-- Imagine scribing a line on the floor at the same distance as the speakers by using a string attached to the listening chair. The Bass Panel can be placed anywhere on this equi-distant arc. However, this equi-distant arc needs to be 12 inches closer to the listening seat for optimum phasing.
- Bass/midbass fine-tuning-- Each placement of the Bass Panel on this equi-distant arc will yield different bass/midbass response. It will require experimentation for best results.
The deepest bass response can usually be achieved when the Bass Panel is butted up against a side wall (or furniture) for improved coupling.
- A faster roll-off rate of higher frequencies from the Bass Panel is usually desirable. This can be accomplished by placing the Bass Panel 90 degrees to the side wall and butted up against the side wall. This achieves an off-axis position relative to the listening seat--in addition to deeper bass response due to improved coupling.
- Attenuation-- It may be necessary to reduce the output of the Bass Panel by replacing the Attenuation Jumper with power resistors. If high power resistors in the value needed are not readily available, solder lower resistance (and lower power rated) resistors in series. (For example, two 1 ohm resistors with a 10 watt rating in series equals a 2 ohm resistor with a 20 watt rating.)
Caution-- Resistors can get hot to the touch when playing high-level, sustained bass. As a precaution, resistors should be suspended and off the floor for maximum cooling.