Ryan Sound Lab LLC MusicPower Z302 Remote Volume Control User Guide
November 2013
2
MusicPower Remote Volume Control User Guide
1.
Congratulations!
Your MusicPower Z302 Remote Volume Control provides the NAC 32, 32.5, and 72 classic
preamps with a capability previously available only to much more expensive Naim models. For
easy installation, please see the installation manual for your particular preamp on our web site:
. With our remote system, you will able to really relax and enjoy the
incredible sound improvements from the rest of your MusicPower Plug-In set.
2.
Overview
In addition to up and down volume, your remote also has a mute feature and a quick turn-down
feature. Plus, because it’s an RF (radio frequency) controller and not a typical IR (infrared) TV-
type controller, you don’t have to point it at your preamp to get it to work. There are no external
sensors or wires, so your system will look as neat as ever! Range is about 20’.
The control system provides 20 steps of progressive attenuation. At loud listening levels, the
steps are close together because the ear is so sensitive at those levels, while at lower volume
levels, the steps are larger to provide good speed and control. Both channels are matched to
within approximately 0.1 db by using 1% resistors for the circuit. The total attenuation is 48db,
which allows for a very wide range of listening levels – from a whisper to extremely loud!
3.
Operation:
Note: The Remote Volume Control System comes from our lab already set at maximum volume.
(We do this so you won’t think it was broken!).
Referring to the photo of the remote control transmitter below, note the operation of the 4
buttons:
