Project Everest DD66000
29
HF Level
This switch adjusts the attenuation applied to the 476Be (high-frequency unit)
by approximately 0.5dB over the range of 1,000Hz to about 8,000Hz. The
action is accomplished by trimming the main attenuation resistors. Midrange
sound becomes softer by reducing the level and stronger by increasing the
level. No additional parts are inserted in the signal path and there is no sonic
deterioration by position or adjustment functions.
LF Level
There is a level trim available for each of the two woofers (LF1 and LF2).
Moving a bar from Low to High will increase the drive level to a portion of
the frequency spectrum over which each woofer operates. LF1 refers to the
low-range woofer (up to 150Hz) and will affect the output level in the range
of 60Hz to 150Hz by about 0.5dB. LF2 refers to the main woofer and will
affect the output level in the range of 150Hz to 700Hz. The purpose of these
adjustments is to allow fine-tuning of the mid-bass and midrange response of
the system to better integrate with varying room characteristics.
Normally, the control bars of LF1/LF2 are moved together to get the maximum
effect (LF1 & LF2 = High, or LF1 & LF 2 = Low). Depending on room
environment, you may get a good balance by moving one of them. In cases in
which the speakers are placed close to corners of the room and the distance
between the two speakers is great and you notice bass boost by reflections from
walls, try to increase the LF1 level and decrease the LF2 level (LF1 = Low,
LF2 = High). The adjustment is accomplished by a change in value of a parallel
damping resistor in each woofer circuit. No series loss is caused by these
controls.
Change from LF1 level trim Change from LF2 level trim
