Loudspeaker System Specifications
13
before it gets to the
PVX™p 12 Bluetooth®
is not optimal. Reduce the mixer
output level and turn up the Level control on the
PVX™p 12 Bluetooth®.
The amplifiers in the
PVX™p 12 Bluetooth®
are equipped with DSP controlled
compression and limiting, and the LED indicator will show when
PVX™p 12
Bluetooth® compression/limiting has engaged. If the sound seems heavily
compressed, check this indicator; if it is blinking RED and is On more than it is
Off, then the drive level from the mixer (or the Level control on the
PVX™p 12
)
needs to be reduced.
When first turning on the sound system, switch on all upstream electronics first,
then the
PVX™p 12 Bluetooth®
with its Level control fully counterclockwise (all
the way down). Begin checking levels with the mixer output level controls all the
way down, and bring them up slowly with the
PVX™p 12 B
luetooth® Level
control set to the desired setting (one-third way up recommended to start).
It is not good practice to turn the Rear Panel Channel Level controls on the
PVX™p 12 Bluetooth®
all the way up and then try to control level only from the
mixer, this approach would tend to pick up excess noise. Best practice would be
to run a “hot” signal from the mixer down the cable to the PVX™p 12 Bluetooth®,
and then turn the
PVX™p 12 Bluetooth®
Level control up only as much as
necessary to reach full desired output. With this approach, it is necessary to
verify the mixer output is not clipping.
When using the system with Bluetooth® as a signal source, it is best to turn
down the Bluetooth® channel (channel 3, 5c) until you are sure the signal level
from your Bluetooth® source device is at a reasonable level, then adjust the
relative gain between the
PVX™p 12 Bluetooth®
and the Bluetooth® source
device.
Use of 1/8" AUX Jack Input (4c)
If using the 1/8" AUX input jack (4c), this channel has more gain than the XLR
combo jacks, and how much depends on whether both of the "channels" on the
1/8" jack carry the same signal or not. The 1/8" input jack is a "stereo" jack, in
that it has separate signal contacts for L and R on the tip and ring.
Since the PVX™p 12 Bluetooth® is a single speaker system, signals coming in
on the 1/8" input jack with content on both channels are summed to mono, and
then fed to the speaker system DSP preamp.
If there is a signal on only one channel, then the gain is 9 dB higher than the
XLR combo jacks 4a and 4b. This creates a sensitivity of approximately 0.18 V
RMS with the Rear Panel Level control adjusted fully clockwise, and the DSP
Master Gain at +10 dB, and the DSP Channel Gain at nominal (0 dB).
With the Rear Panel Level control adjusted fully clockwise, and the DSP Master
Gain at +10 dB, and the DSP Channel Gain full up (10 dB), this becomes 0.056
V RMS.
