4
Fine Tuning the Frequency Response of Your Loudspeakers
Three Position Treble Adjustment
The PAL-245 treble adjustment switch allows you to adjust the tweeter level from 0 dB
(flat) to -3 dB or + 3 dB. If you are mounting the speaker in a “live” room with many
reflective surfaces, you may want to attenuate the treble response and tame sibilance. If
you are mounting the speaker in a room with many absorptive surfaces, you may want to
boost the treble response.
Two Position Mid-Bass Contour Adjustment
The PAL-245 mid adjustment switch allows you to attenuate the mid response from 0 dB
(flat) to -3 dB. If you mounted the PAL-245 near a corner of a wall, you may notice
additional boominess of the bass response. You can attenuate the mid-bass response by
setting the mid switch to the -3 dB position.
Installation Instructions for NC/K-M Rough-In Kits
Follow these instructions if you will cut the final hole for the speaker with a pin router.
1. Determine the final cutout location of the Custom Series loudspeaker.
2. Install one of the 25" mounting bars horizontally between two studs with the slot
facing up and toward you.
3. Use a level or carpenter’s square before nailing or screwing the bar into the studs.
4. Slide the cutout frame into the desired location with the 3/8" tabs facing toward you.
5. Place the other 25" horizontal bar onto the top of the cutout frame and nail or screw it
into the studs.
6. Flatten the outer edge of the slot of the mounting bars against the studs with a hammer
to keep the frame from sliding.
7. Once the drywall has been hung, use a pin router to cut out the hole against the outer
edge of the cutout frame.
8. Install the Custom Series loudspeaker as shown above in Installing in Existing Walls
and Ceilings.
Note: If you will cut the final hole for the speaker with keyhole saw, replace steps 7 and 8
with these:
7. Once the drywall has been hung, use a keyhole or similar saw to cut the hole to the
inside edge of the frame.
8. Install the Custom Series loudspeaker as shown above in Installing in Existing Walls
and Ceilings. Make sure the Custom Series mounting bracket is installed on the speaker
with the slotted side facing toward you and the flat side facing away from you. This
allows the upper and lower sections of the mounting bracket to fit into the upper and
lower tabs of the cutout frame.
High
Mid