Guardian Audio B8MP3 User manual

Maximum Power:
Send
Record
Input Impedance:
Channel EqualizaƟon:
High
Low
ProtecƟon Circuit:
180 was @ 4 ohms
120 was @ 8 ohms
‐10dBv 1k ohms
‐10dBv 1k ohms
Lo‐Z Mic 1k ohms
Hi‐Z Mic 10k ohms
Tape Playback 10k ohms
±15dB @ 5kHz
±15dB @ 60kHz
±15dB @ 60kHz
Power on mute 2 seconds
Guardian Audio is a registered trademark of MoAudio LLC.
Product and specificaons subject to change without noce.
B8MP3
Owners Manual
Guardian Audio is a registered trademark of MoAudio LLC.
Product and specificaons subject to change without noce.
8 TCC Channel Powered Mixer
With USB-MP3 Player
We use True Channel Count (TCC) on all Guardian Audio®
mixers. A mic channel consists of a minimum of an XLR in-
put, EQ and level controls. A stereo channel consists of a
minimum of a pair of input jacks, EQ and level controls.

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FRONT PANEL FEATURES
1) Channel volume control. This control determines how
much signal is sent to the main bus.
2) XLR low impedance balanced microphone input. Phan‐
tom power for condenser microphones. Input imped‐
ance is 10k ohms. The XLR connector is wired PIN 1 =
shield, PIN 2 = hot, PIN 3 = neutral.
3) EQ controls. These adjust the overall tone of the chan‐
nel. They cut or boost high and low frequencies ±15 dB.
4) 1/4” line high impedance input. This input can be used
for a high impedance microphone or line level device
such as keyboards, guitars and CD players. The input im‐
pedance is 10k ohms. Both high and low impedance
jacks can be used simultaneously.
5) Reverb control determines the amount of reverb effect
is sent to the main bus for each channel.
6) Play / Pause buon for the MP3 player.
7) LCD Display shows songs, elapsed me and total me.
8) Track repeat control for the MP3 player.
9) Graphic Equalizer controls ±12dB of boost or cut at
60Hz, 250Hz, 800Hz, 2kHz and 8kHz.
10) Skip to the next track on the MP3 player.
11) Phantom Power turns the 15v phantom power on or off.
12) Blue LED power indicator.
13) LED level display.
14) Master Volume controls the overall volume of the mixer.
15) CD/Tape volume control.
16) USB jack for flash drive.
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17) Stop buon for the MP3 player.
18) Effects Controller adjusts the amount and delay me of
the reverb effects.
19) Skip to the previous track on the MP3 player.
20) Volume for the MP3 player.
REAR PANEL FEATURES
21) Tape Input RCA jacks are for tape/CD or other line level
signal. This is 10k ohm @ ‐10dBv.
22) Tape Rec RCA jacks are for sending signal to a recorder.
These are pre‐master and do not have reverb or the Tape
Input signal.
23) Effects Loop Send 1/4” jack for adding external effects,
recording out or adding an addional power amp. This line
level signal is a mirror of the main output.
24) Effects Loop Return 1/4” jack for adding external effects.
This is 10k ohm @ ‐10dBv.
25) Speaker output 1/4” jacks. The minimum impedance for
this amplifier is 4 ohms. A total of one 4 ohm or two 8 ohm
speakers may be connected. Do not operate below 4 ohms.
26) Voltage select switch.
27) IEC connector for 115 volts 60 cycle grounded AC cur‐
rent. Never operate without the ground pin.
28) Power Switch turns the mixer on and off. A front panel
LED lit indicates that the power is on.