Fine Tuning The Subwoofer; Frequency Chart; Fine Tuning Flow Chart - NHT Powered Subwoofers Owner's Manual

Fine Tuning the Subwoofer

The key to good subwoofer / speaker integration is
repeated listening, followed by making small re-adjust-
ments of the subwoofer controls. The most important
bass tuning functions you will control are the LOW-PASS
FILTER, followed by the VOLUME CONTROL settings
and then PHASE SELECTOR.
Low Bass Mid Bass
Below 50Hz 50Hz-100Hz
"Boomy"
Too Much
Mid / Upper
Bass
Adjust
Subwoofer
Phase
0-90
(Continuously
Add)
Lower
Low Pass
X-Over
Frequency
Lower
Subwoofer
Volume
Listen

Frequency Chart

Upper Bass Lower Mid
100Hz-180Hz 180Hz-300Hz

Fine Tuning Flow Chart

Lacks
Mid / Upper Bass:
Lean But With
Weight
Adjust
Subwoofer
Phase
0-90
(Continuously
Add)
If this makes
it worse,
try
If the sound
improves
Adjust
Subwoofer
Volume
Listen
The frequency chart below lists some terms commonly
used to describe different bands of the frequency
spectrum. Listen to your system and make adjustments
to achieve a seamless blend between your main
speakers and the Ten or Twelve. Four common problems
are outlined below. Follow the flow chart to correct these.
See the glossary for any terms you are unfamiliar with.
Mid Upper Mid
300Hz-700Hz 700Hz-3K
Lacks
Weight
Adjust
Subwoofer
Phase
Switch
Increase
Boundary
Raise
Low-Pass
Setting
Subwoofer
Adjust
Closer to
Subwoofer
Volume
Listen
Adjust
Subwoofer
Phase
Listen
3K and above
Excessive
Low Low
Bass Bass
Weight
Decrease
Boundary
EQ
0-180
Move
Subwoofer
Farther
From Wall
EQ
Listen
Move
Wall
High