Biamp 301 & 601 User Manual

301 & 601

+

0

+

0

threshold

basstreble

-20on

master

limit+10

trim

1

+10

trim

2

+10

trim

3

301

+

0

bass

-

+

0

trebl

e

2

+10

trim

+1

0

t

rim

4

+10

trim

+10

trim

5

+10

trim

+10

trim

6

+10

trim

+1

0

trim

master

threshold

limit on

+20

m

threshol

d

mit

1

+10

trim

+1

0

t

rim

3

+10

trim

+1

0

trim

601

+

0

+

0

bass

treble

+

+

0

treb

le

0

bass

Mic/Line Mixers

The 301 & 601 are single rack space, three input & six input mic/line mixers. Each input channel uses

a differentially balanced, discrete transistor mic/line preamplier for low noise and low distortion

performance. Inputs are provided to accept signals from microphones and/or line level devices.
Special features, including limiters and remote level control, make the 301 & 601 extremely versatile.
301 & 601 mixers are dependable, easy to install, simple to operate, and are covered by Biamp

Systems’ ve-year warranty.

FEATURES

• three electronic balanced mic/line input channels (301)

• six electronic balanced mic/line input channels (601)

• 30db rear panel Pad switch on each input channel

• 40dB screwdriver-adjust Trim on each input channel

• +10dB Peak LED indicator on each input channel

• rotary level control on each input channel

• auto-muting of one channel for “talk-over”

applications

• +24 volt Phantom Power assign switch on each input

• electronic balanced main output with rotary level

control

• remote control of mail level from up to 2000 feet away

• main patch insert point for external processing devices

• main stacking input accepts signals from other mixers

• screwdriver-adjust tone controls & limiter on main

output

• -20dB Signal Present LED indicator for main output

• all input/output/control on plug-in barrier strip

connectors

• RoHS compliance and AES grounding practices

• CE marked and UL listed power source

• covered by Biamp Systems’ ve-year warranty

ARCHITECTS & ENGINEERS SPECIFICATION

The mixer shall have either three or six differentially balanced input channels utilizing discrete transistor

preamplier circuitry. Inputs shall accept microphone or line level signals. Each input shall include a screwdriver
adjustable trim control with 40dB of range, a 30dB pad switch, a +10dB (peak) indicator, and a rotary level
control. Automatic muting of the last input, via signal present in any or all of the other inputs, shall be assignable
by rear panel DIP switches. Phantom Power shall be assignable to the individual inputs, via rear panel switches.
Phantom Power shall be +24 Volts, switch selectable on each input.
The master section shall include an electronically balanced main output, a rotary level control, a signal present
indicator, screwdriver adjustable treble and bass equalization, a limiter with screwdriver adjustable threshold &
indicator, remote control of level from up to 2000’ away, an electronically balanced stacking input, and a patch
insert point for external signal processing. All signal connections shall be on plug-in barrier strip and the mixer
shall be rack mountable in a single rack space.
The mixer shall have a Frequency Response of +0/-1dB from 20Hz to 20kHz, THD + Noise of less than .02%,
and Equivalent Input Noise of less than -125dBu. Power Consumption shall be less than 7 watts. Dimensions
shall be 1.75” (H) x 19” (W) x 7” (D). Weight shall be 6 lbs. Warranty coverage shall be ve years. 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.
The three input mixer shall be a BIAMP 301 Mic/Line Mixer.
The six input mixer shall be a BIAMP 601 Mic/Line Mixer.

Biamp Systems, 10074 S.W. Arctic Drive, Beaverton, Oregon 97005 U.S.A. [phone] www.biamp.com

301

BIAMP SYSTEMS

designed and assembled in USA
www.biamp.com

patch

pad

phantom

DC Power
Class 2 wiring
or LPS

GND

ch 1

ch 2

ch 3 duck

enableenable

remote

pad

phantom

pad

phantom

patch

cin

24V

vout

stack in

7W

+

-

main out

remote

channel 2channel 3 channel 1

input input input

301 REAR PANEL DIAGRAM

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
main patch to main output
main stack to main output

Crosstalk (channel-to-channel @ 1kHz):
Output Impedance:

main output (balanced)
main patch (unbalanced)

Maximum Output:

main patch
main output

Output Limiter:

atack time
release time
threshold range

Output Tone Controls:

Bass & Treble

Remote Control Attenuation (0~+10VDC):
Input Trim Control Range:
Input Pad Switch Attenuation:
Input Impedance:

mic/line inputs (balanced)
main patch (unbalanced)
main stack (balanced)

Maximum Input:

mic/line input
main patch
main stack

Power Requirements:
Power Consumption:
Dimensions:

height (1 rack space)
width
depth

Weight:

Compliance:

+0/-1dB
< 0.02%

-125dBu

< -86dB
< -78dB

78dB
16dB
10dB

-60dB

200 ohms
100 ohms

+18dBu
+24dBu

1~2 mS (program dependent)

100~500 mS (program dependent)

-4dBu ~ +24dBu

±10dB @ 100Hz & 10kHz

-80dB ~ 0dB
50dB
30dB

2.7k ohms

> 7k ohms

30k ohms

+30dBu
+30dBu
+24dBu

115/230VAC 50/60Hz

< 7 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

301 & 601 SPECIFICATIONS

cin

designed and assembled in USA
www.biamp.com

patch

DC Power
Class 2 wiring
or LPS

24V

GND

7W

ch 1

ch 2

ch 3

ch 4

ch 5

ch 6 duck

remote

phantom

pad

pad

pad

pad

pad

phantom

phantom

phantom

phantom

pad

phantom

vout

-

+

BIAMP SYSTEMS

601

channel 1channel 2channel 3channel 4channel 5channel 6

remote input input input input input inputstack in patchmain out

enable enable

601 BLOCK DIAGRAM

phantom

power

trim

level

+24V

peak

detect

peak

EQ
+/- 10dB @ 100 Hz
+/- 10dB @ 10 kHz

bass treble

peak

-

+

input

transformer

(optional)

ch 6

mute

master

level

-

+

main output

(balanced)

phantom

power

trim

level

+24V

(+48V opt.)

peak

detect

-30dB

pad

-

+

input

transformer

(optional)

mute

-15dB

patch

out

in

mute buss

mix buss

Channels
1 thru 5
(mic/line)

Channel 6
(mic/line)

601 Block Diagram

signal
detect

signal present

-30dB

remote

pad

vca

+10v

ctrl

limiter

limit

threshold

+

stack in

-

601 REAR PANEL DIAGRAM

Biamp Systems, 10074 S.W. Arctic Drive, Beaverton, Oregon 97005 U.S.A. [phone] www.biamp.com

Aug 2009