Martin Logan Dynamo Foundation 12 handleiding

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Handleiding

ConTrols

Low-Pass Filter

The Low Pass Filter lets you adjust the low-pass frequency for the left and right inputs. The Low-Pass filter

value sets the point where the subwoofer will begin to “roll off” or gradually reduce its output. You do

not want your subwoofer playing sounds that are too high in frequency, nor do you want to give your

subwoofer too little content to play. This control does not act like a “brick wall” where it completely cuts

off sounds above the chosen value, again, it marks the point where the subwoofer will gradually fade out.

If you are using this subwoofer as an LFE channel in a home theater system, or your electronic device

already has a built-in Low-Pass Filter, set this control to Bypass. In this mode your electronics will

handle the bass management instead of the subwoofer. If your device has a Low-Pass Filter and

you do not set the subwoofer’s Low-Pass Filter to “Bypass” then you will essentially have 2 filters

stacked on top of each other which can significantly reduce the bass output in certain ranges.

If you are using this subwoofer in a 2-channel stereo system, or with a device that does not have

a built in Low-Pass Filter, set this control to your desired value. As a general rule, the Low-Pass

Filter in these systems is typically set in increments of 20Hz (40/60/80/100) and typically will not

exceed 80Hz. 80Hz is often a good starting point for a wide variety of systems. You will not harm

anything by experimenting with different settings here. Choose the one you think sounds best.

Phase

The Phase switch allows you to adjust the phase of the subwoofer to 0 or 180°. The Phase

control is entirely dependent on numerous factors including the size and configuration of your

listening environment, the placement of the unit, and seating arrangement. Due to the way

bass sound waves develop in different rooms; there is no rule of thumb for setting phase.

For instance, if your room has a peak at the subwoofer crossover area, you may wish

to set the phase so the actual acoustic outputs of the subwoofer and main speakers

are out of phase. Experiment and try different settings and be patient, ultimately

choose the setting that sounds best to you using a variety of content you like to listen to.

Volume

Most AV Receivers or Processors have some form of auto-setup/calibration feature that will typically

set the levels of the speakers and subwoofer(s). If using this feature, you can set the volume knob

on the subwoofer to roughly the halfway point and let the system calibrate the level for you. If

you desire more or less bass than what it configures for you, simply adjust the subwoofer volume

control (or the subwoofer level control in your electronics) to achieve your preferred sound.

Power Mode

This subwoofer features a signal-sensing power supply that when set to “AUTO” will automatically turn

the subwoofer on when a signal is detected on eithere the Left or Right RCA inputs. It will also power off

the subwoofer after sensing no signal for several minutes. The “ON” power mode leaves the subwoofer

powered on and ready to play all the time with no delay, but will draw more power while not actively in use.

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