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Phasing

The Magnepan Pink Noise CD Test Disk included with your DW 1 can be used to determine if the DW 1 is in

phase with your limited bandwidth Magneplanar. The test CD has a 9 db peak at 80-100 Hz that draws attention to

the frequencies which will be depressed in an out-of-phase condition. Place the DW 1 next to your limited

bandwidth Magneplanar and change the phase. (It is much easier to detect an out-of-phase condition when the

"small" speaker is physically next to the Woofer.) Since the DW 1 is a dipole woofer, the easiest way to

determine if the DW 1 is in-phase is by simply turning the woofer around (180 degrees). The speakers are in-

phase when the peak is the loudest.

If you are uncertain of the phasing, a technique which can aid in determining if the phase is correct, is by leaning

over and positioning your head between the Magneplanar Woofer and the "small" Magneplanar as shown in Fig. 3

below. The left and right ears are equi-distance to the respective speakers. High frequencies will appear to be up

and low frequencies will appear to be down. Midbass frequencies, if in phase, will appear to be in the middle (and

louder).

Depending upon the location of the DW 1 with respect to the limited bandwidth Magneplanar, the DW 1 might be

90 degrees out of phase with the "small" Magneplanar and changing the phase does not make a noticeable

difference in the loudness of the pink noise peak. It may be necessary to move the DW 1 with respect to the

Magneplanar to achieve a better in-phase condition.

Fig. 3

Содержание DW 1

Страница 1: ...ogy The DW 1 can be driven simultaneously by 3 separate amplifiers typically the front left center and right channels The DW 1 is a fast woofer with flat response to 5 kHz which makes the DW 1 ideal f...

Страница 2: ...ttom of the DW 1 with a Phillips screw driver and pliers See Fig 1 Cosmetically the front and back of the DW 1 are identical To identify the back of the speaker and ensure proper phasing the back of t...

Страница 3: ...bandwidth Magneplanar Minor adjustments from that position are often necessary for fine tuning as described under Phasing below As a general rule dipole speakers produce the deepest and most linear b...

Страница 4: ...n the peak is the loudest If you are uncertain of the phasing a technique which can aid in determining if the phase is correct is by leaning over and positioning your head between the Magneplanar Woof...

Страница 5: ...inth St White Bear Lake MN 55110 1 800 474 1646 Include a note describing the nature of the problem Please include your name address and a daytime telephone number 8 Specifications System Description...