behringer 305 EQ/Mixer/Output User Guide
- June 7, 2024
- Behringer
Table of Contents
Quick Start Guide
305 EQ/MIXER/OUTPUT
Legendary Analog Parametric EQ, Mixer and Output Module for Eurorack
LEGAL DISCLAIMER
Music Tribe accepts no liability for any loss which may be suffered by any person who relies either wholly or in part upon any description, photograph, or statement contained herein. Technical specifications, appearances and other information are subject to change without notice. All trademarks are the property of their respective owners. Midas, Klark Teknik, Lab Gruppen, Lake, Tannoy, Turbosound, TC Electronic, TC Helicon, Behringer, Bugera, Oberheim, Auratone, Aston Microphones, Aston Microphones and Coolaudio are trademarks or registered trademarks of Music Tribe Global Brands Ltd. © Music Tribe Global Brands Ltd. 2021 All rights reserved.
LIMITED WARRANTY
For the applicable warranty terms and conditions and additional information regarding Music Tribe’s Limited Warranty, please see complete details online at musictribe.com/warranty.
305 EQ/Mixer/Output Controls
Controls
(1) MIXER INPUTS (1 / 2 / 3 / 4) – Use these jacks to route audio signals
into the OUTPUT MIXER section via cables with 3.5 mm connectors. Channel 1
includes a pre-wired, normalled connection from the parametric EQ section, so
the PARAMETRIC EQ output can directly enter the Channel 1 signal path just
before the volume slider. If a 3.5 mm connector is inserted into the MIXER
INPUT 1 jack, the EQ output is disconnected and replaced by the incoming jack
signal from MIXER INPUT 1.
(2) VOLUME SLIDERS – Use these sliders for independent volume control of
each input channel.
(3) PANPOT – These knobs control each channel’s placement in the stereo
field.
(4) LEVEL (1 / 2 / 3 / 4) – Use these knobs to cut or boost each of the
PARAMETRIC EQ’s four frequency bands.
(5) BANDWIDTH – These knobs control the width or narrowness of the
parabolic filter curve for each frequency band. Higher values narrow the
curve, while lower values produce a wider, gentler parabolic curve.
(6) FREQUENCY – Use these knobs to adjust the placement of each EQ filter
around the center value shown just above the knob.
(7) IN – Use this input to route external signals into the PARAMETRIC EQ
section via cables with 3.5 mm connectors. The IN jack’s associated signal and
clip LEDs read the input signal level when BYP is selected on the EQ/BYP
sliding switch. When EQ is selected on the EQ/BYP sliding switch, the LEDs
read the EQ output level.
(8) EQ/BYP – This sliding switch turns the PARAMETRIC EQ circuit on or
off. When the switch is in the BYP position, and the EQ circuit is inactive,
the signal coming in through the IN jack will be passed through unaltered to
the Channel 1 mixer channel.
(9) EQ OUT (1 / 2) – Use these parallel output jacks to send the
PARAMETRIC EQ section’s processed signal out for use elsewhere via cables with
3.5 mm connector. When the EQ/BYP switch is in the BYP (bypassed) position,
the signal coming in through the IN jack will be duplicated at the EQ OUT
outputs.
(10) MIX LEVEL – Use this knob to adjust the volume of the STANDARD OSC
output before the adjusted signal is then sent to the headphone LEVEL control
and the final MASTER VOLUME control.
(11) FREQ (OFF / 220 / 440 / 880) – This sliding switch turns the onboard
oscillator (STANDARD OSC) on or off and chooses the oscillator’s frequency.
The oscillator’s output goes to the OUTPUT MIXER section as a pre-wired
parallel connection, like an additional fifth mono channel, that is blended
into the mixer section’s output using the MIX LEVEL control.
(12) MASTER VOLUME – Use this knob to make final level adjustments before
the mix goes to the MASTER OUTPUTS.
(13) MASTER OUTPUTS – Use these outputs to send out the final mix via
separate left and right jacks via cables with either 3.5 mm or ¼” connectors.
For a single mono output, use only the output labeled L/MONO.
(14) LEVEL (PHONES) – Use this knob to control the volume level for the
PHONES output.
(15) PHONES – This output sends out the final mix for headphones with a
1/8” stereo connector.
Power Connection
Connect end P1 to the module socket
Connect end P2 to the power supply
The 305 EQ/MIXER/OUTPUT module comes with the required power cable for connecting to a standard Eurorack power supply system. Follow these steps to connect power to the module. It is easier to make these connections before the module has been mounted into a rack case.
- Turn the power supply or rack case power off and disconnect the power cable.
- Insert the 16-pin connector on the power cable into the socket on the power supply or rack case. The connector has a tab that will align with the gap in the socket, so it cannot be inserted incorrectly. If the power supply does not have a keyed socket, be sure to orient pin 1 (-12 V) with the red stripe on the cable.
- Insert the 10-pin connector into the socket on the back of the module. The connector has a tab that will align with the socket for correct orientation.
- After both ends of the power cable have been securely attached, you may mount the module in a case and turn on the power supply.
Installation
The necessary screws are included with the module for mounting in a Eurorack case. Connect the power cable before mounting.
Depending on the rack case, there may be a series of fixed holes spaced 2 HP apart along the length of the case, or a track that allows individual threaded plates to slide along the length of the case. The free-moving threaded plates allow precise positioning of the module, but each plate should be positioned in the approximate relation to the mounting holes in your module before attaching the screws.
Hold the module against the Eurorack rails so that each of the mounting holes are aligned with a threaded rail or threaded plate. Attach the screws part way to start, which will allow small adjustments to the positioning while you get them all aligned. After the final position has been established, tighten the screws down.
Specifications
Inputs
EQ input
Type| 3.5 mm TS jack, AC coupled
Impedance| 40 kΩ, unbalanced
Max input level| +18 dBu
Mixer input
Type| 4 x 3.5 mm TS jacks, AC coupled
Impedance| > 25 kΩ, unbalanced
Max input level| +21 dBu
Outputs
EQ output
Type| 2 x 3.5 mm TS jacks, DC coupled
Impedance| 330 Ω, unbalanced
Max output level| +18 dBu
Noise with EQ set flat| < -90 dBu, 22 Hz to 22 kHz
Master output
Type| 2 x 3.5 mm TS jacks
2 x 1/4″ TS jacks
AC coupled
Impedance| 700 Ω, unbalanced
Max output level| +8 dBu
Noise with 1 channel open| < -100 dBu, 22 Hz – 22 kHz
Phones output
Type| 3.5 mm TRS stereo jack, AC coupled
Impedance| 50 Ω, unbalanced
Max output level| +18 dBu
Controls
EQ level| ±12 dB, 0 dB center detent
EQ bandwidth Q range| 0.9 to 9
EQ frequency range 1| 20 Hz to 200 Hz
EQ frequency range 2| 100 Hz to 1 kH
EQ frequency range 3| 500 Hz to 5 kHz
EQ frequency range 4| 2 kHz to 20 kHz
EQ bypass switch| Off / on
OSC frequency switch| Off / 220 Hz / 440 Hz / 880 Hz
OSC mix level| -∞ to unity gain
Mixer input fader| -∞ to unity gain
Mixer panpot| -∞ to unity gain, -3 dB center detent
Master volume| -∞ to -10 dBu
Phones level| -∞ to +10 dBu
Power
Power supply| Eurorack
Current draw| 120 mA (+12 V), 100 mA (-12 V)
Physical
Dimensions| 53 x 122 x 129 mm
(2.1 x 4.8 x 5.1″)
Rack units| 24 HP
Weight| 0.28 kg (0.62 lbs)
Hereby, Music Tribe declares that this product is in compliance with Directive 2014/30/EU, Directive 2011/65/EU and Amendment 2015/863/EU, Directive 2012/19/EU, Regulation 519/2012 REACH SVHC and Directive 1907/2006/EC.
Full text of EU DoC is available at https://community.musictribe.com/
EU Representative: Music Tribe Brands DK A/S
Address: Ib Spang Olsens Gade 17, DK – 8200 Aarhus N, Denmark
We Hear You
Documents / Resources
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behringer 305
EQ/Mixer/Output
[pdf] User Guide
305 EQ MIXER OUTPUT
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