Niles PHD30 Installation Manual page 13

PHD60/42: ACOUSTIC FINE TUNING
Each PHD60/42 also features variable TREBLE and MIDRANGE controls on the front baffle for
acoustic fine-tuning after placement, as shown in Figure 8. Adjust these controls as follows:
• Initially set both TREBLE and MIDRANGE control to 0 dB.
• If a PHD60/42 is placed in a room with highly reflective surfaces like glass or tile or
the reproduced sound is too bright, decrease the TREBLE setting by as much as –3 dB
to lower the high-frequency response. If the room has heavy drapes or is wallpapered,
try increasing the TREBLE setting by as much as +3 dB to brighten the
high-frequency response.
• Listen to dialog being reproduced on the PHD60/42. If you want it more pronounced,
increase the MIDRANGE setting by as much as +3 dB to enhance the mid-frequency
response. If the dialog is too pronounced, decrease the MIDRANGE setting by as much
as –3 dB to lower the mid-frequency response.
CHECKING LOUDSPEAKER PHASE
Loudspeaker wire has two conductors. On both your loudspeaker and amplifier, one conductor
is attached to the negative (–) terminals, while the other is attached to the positive (+) terminals.
Usually, the wire is marked for your convenience, but the marking can be done in the following
different ways:
• Stripe on one wire
• Ribbed area you can feel on one conductor
• Different colors of metal wire on each conductor
• Fabric strand or string wound into one of the conductors
NILES AUDIO CORPORATION – 1-800-BUY-HIFI
Figure 8. Each PHD60/42 includes variable
TREBLE and MIDRANGE controls with up to 3 dB of
boost or cut in the response.
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