Setting Bass And Treble; Remote Control Operation - Extron electronics MPA 601-70V User Manual

Setting Bass and Treble

NOTES:
To adjust the bass and treble:
1.
2.

Remote Control Operation

Options for remote control include the Extron VC 50, VCM 100 AAP, VCM 100 MAAP,
VCM 200 series, MLA VC10 Plus, MLC 55 RS VC, and MLC 64 RS VC D. For information
on these devices, including part numbers, go to www.extron.com. Third party 10k
potentiometer volume controllers can also be used for remote volume and mute control.
See figure 12 and the bullets below for wiring the VCM 100 MAAP. Wiring for the other
Extron remote control units is similar.
Volume Pot
10K Ohms
Figure 12.
•
•
•
NOTE: All nominal levels are ±10%.
• When the potentiometer is at the center detent (vertical), the frequency response is
flat. Turning the or
BASS
output level at the specified frequencies, while turning the potentiometers clockwise
will increase the level at the specified frequencies.
• Increasing the bass or treble levels after the input level has been set may result in
clipping.
• Exercise caution when adjusting the bass. It is possible to saturate the transformer
cores of high impedance speakers if the bass is set incorrectly.
Using a small flat head screwdriver (such as the provided Extron Tweeker), adjust the
potentiometer to increase or decrease the bass shelving ±10 dB at 100 Hz and
BASS
below.
Using a small flat head screwdriver (such as the provided Extron Tweeker), adjust the
potentiometer to increase or decrease the treble shelving ±10 dB at 10 kHz and
TREBLE
above.
REMOTE
V
10 V (Pin 1)
2K
Vol/Mute
(Pin 2)
Mute
Switch
GND (Pin 3)
Remote Control Wiring
Pin 1 is 10 VDC reference voltage.
Pin 2 (Vol/Mute) can be used as a variable voltage input between 0 and 10 VDC with
0V providing full attenuation and 10V providing no attenuation. It can also be used for
remote control muting. Sound is muted while the pin is shorted to ground.
Pin 3 is ground.
potentiometers counterclockwise will decrease the
TREBLE
R
C G
MPA 601 • Operation 11