Biamp 801I User Manual
801i
FEATURES
• 8 differential balanced mic/line inputs & 1 aux line input
• discrete transistor mic/line preamps for low noise/distortion
• +24 volt phantom power selectable on each mic/line input
• aux input switch selectable for balanced or stereo summing
• aux input 'auto-ducking' switch selectable on channels 1~8
• front panel trim and rear panel pad switch on each channel
• +10dB 'peak' LED indicator on each channel for easy set-up
• high-pass 'rumble' filter switch selectable on each channel
• mic/line & aux inputs on plug-in barrier strip connectors
• balanced main output on plug-in barrier strip connector
• main output limiter with threshold control and LED indicator
• main out Bass & Treble control with rear panel bypass switch
• -20dB signal present & power LED indicators at main output
• channel 1 automatic override assignable on other channels
• optional remote control of main out via external level control
• stack in & slave switch for adding inputs by linking units
•
CE
marked and UL / C-UL listed power source
• RoHS compliance and AES grounding practices
801i
1 2 3 4 5 6 7 8
aux bass treble master
+10+10 +10 +10+10 +10 +10 +10+10
trim trim trim trim trim trim trim trim
threshold
+1
0
tr
im
+1
0
trim
3
3
+10
tr
im
+10
tri
m
5
5
+10
tr
im
6
6
+10
tr
im
+1
0
tr
im
8
8
+10
tr
im
thresho
l
d
–20
limit
on
Mic/Line Mixer
The 801i is a single rack-space mixer, with eight mic/line inputs and one auxiliary line input.
Each mic/line channel uses a differentially balanced, discrete transistor preamplier for low
noise and low distortion performance. Special features, including a limiter and remote level
control, make the 801i extremely versatile. The 801i mixer is dependable, easy to install,
simple to operate, and carries a ve-year warranty.
ARCHITECTS & ENGINEERS SPECIFICATION
The mixer shall provide 8 differential balanced mic/line inputs and one auxiliary line input, all on plug-in
barrier-strip connectors. The mic/line pre-ampliers shall be of discrete transistor design to insure low noise and
low distortion performance. Phantom Power shall be +24 Volts, selectable on each mic/line input via rear panel
DIP switches. The auxiliary line input shall be selectable for either balanced mono input or unbalanced stereo
summing input, via rear panel DIP switch. Rear panel DIP switches shall allow signal present in any or all of the
eight mic/line inputs to trigger 15dB of automatic attenuation at the auxiliary line input. Front panel screw-driver
adjustable trim controls and rear panel pad switches shall be provided on each input channel. Each input channel
shall also include a rotary level control, an LED peak indicator, a high-pass lter switch, and an unbalanced direct
output terminal.
The mixer main output shall be electronically balanced on plug-in barrier-strip connectors. The output section
shall include Treble & Bass tone controls with a rear panel bypass switch, a limiter with threshold control & LED
indicator, a signal present LED indicator, a rotary level control, and connection for an optional external remote
level control. A stack input & slave switch shall allow multiple mixers to be linked, for increased system input
capabiltiy. Channel 1 automatic priority override shall be assignable on other input channels.
Frequency Response shall be +0/-1dB from 20Hz to 20kHz at +4dBu. THD + Noise shall be less than .08% from
20Hz to 20kHz at +4dBu. EIN shall be less than -123dBu and output Hum & Noise shall be less than -78dBu from
20Hz to 20kHz at nominal level. Power Consumption shall be less than 13 Watts. Dimensions shall be 1.75 inches
(1 rack space) high, 19 inches wide, and 7 inches deep. Weight shall be 6 lbs. The mixer shall be CE marked with
a UL / C-UL listed power source, and shall incorporate AES48-2005 Grounding & EMC practices. The mixer shall
be compliant with EU Directive 2002/95/EC, the RoHS directive. Warranty shall be 5 years.
The mixer shall be a BIAMP 801i.
Biamp Systems, 10074 S.W. Arctic Drive, Beaverton, Oregon 97005 U.S.A. (503) 641-7287 www.biamp.com
BIAMP SYSTEMS
ONON
DC Powe r
Class 2 wiring or LPS
GND
remote
801i
stack inmain out
designed and assembled in USA
www.biamp.com
channel 2channel 1
ON
priority
hp filter
duck aux
phantom
pad
priority
hp filter
duck aux
phantom
pad
priority
hp filter
duck aux
phantom
pad
priority
hp filter
duck aux
phantom
pad
priority
hp filter
duck aux
phantom
pad
priority
hp filter
duck aux
phantom
pad
priority
hp filter
duck aux
phantom
pad
priority
hp filter
duck aux
phantom
pad
ON
d. out
input
d. out
input
d. out
input
d. out
input
d. out
input
d. out
input
d. out
input
d. out
input
input
channel 3
ON
channel 5channel 4
ON
channel 7
channel 6channel 8
ON ONONON
d. out
aux
remote
slave
tone out
override
pad
priority
sum
hp filter
vc
RL
-
+
13W
24V
801i REAR PANEL DIAGRAM
801i BLOCK DIAGRAM
Master Section
priority
bus
master
level
Input Channels
Aux Input
phantom
power
discrete
transistor
preamp
trim
peak
detect
+10dB
+24V
direct
out
mix
bus
duck
bus
level
channels 1-8 only
signal
detect
duck
logic
main
stack
mix
bus
main
output
Σ
VCA
input
mono sum/
balanced
slave
direct
out
gate
override
channel 1 only
signal
detect
priority bus
HP
filter
priority
peak
detect
+10dB
mix
bus
duck
bus
level
gate
priority
bus
HP
filter
priority
EQ
+/-10dB @ 100Hz
+/-10dB @ 10kHz
bass treble
tone out
from ch 1
limit
detect
limit threshold
input
transformer
(option)
-20
output
transformer
(option)
remote level
control
Σ
+10V
remote
15dB
duck
input
18dB
pad
10dB
pad
override
override
logic
Frequency Response (20Hz~20kHz @ +4dBu):
THD+Noise (20Hz~20kHz @ +4dBu):
Equivalent Input Noise (20Hz~20kHz, 150Ω term.):
Output Noise (20Hz~20kHz):
master level control down
master level & one channel at nominal
Maximum Gain:
mic input to main output
stack input to main output
OutputTone Controls:
Bass & Treble
Channel High-Pass Filters:
frequency
slope
Output Limiter:
atack time
release time
threshold range
Output Impedance:
main output (balanced)
channel direct (unbalanced)
Maximum Output:
main output
channel direct
Input Impedance:
mic/line inputs (balanced)
stack input (balanced)
Maximum Input:
mic/line input
stack input
Crosstalk(channel-to-channel @ 1kHz):
Power Consumption (115/230VAC 50/60Hz):
Dimensions:
height (1 rack space)
width
depth
Weight:
Compliance:
+0/-1dB
< 0.08%
-123dBu
< -86dB
< -78dB
85dB
9dB
±10dB @ 100Hz & 10kHz
-3dB @ 170Hz
6dB/octave
1~2 mS (program dependent)
100~500 mS (program dependent)
-4dBu ~ +24dBu
200 ohms
100 ohms
+24dBu
+18dBu
5.1k ohms
40k ohms
+20dBu
+24dBu
-60dB
< 13 watts
1.75 inches (44mm)
19 inches (483mm)
7 inches (178mm)
6 lbs. (2.72kg)
AES48-2005 Grounding & EMC practices
EU Directive 2002/95/EC, RoHS directive
CE marked
UL listed power source
801i SPECIFICATIONS
Biamp Systems, 10074 S.W. Arctic Drive, Beaverton, Oregon 97005 U.S.A. (503) 641-7287 www.biamp.com
July 2009
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