Behringer Eurolive B312A User manual

User Manual
Processor-Controlled 400-Watt
2-Way PA Speaker System with
12"/15" Woofer and 1.75"
Titanium Compression Driver
Thank you
Table of Contents
Thank you very much for expressing your confidence in
Thank you...................................................................... 1
Important Safety Instructions.................................... 2
1. Before You Get Started............................................ 3
BEHRINGER products by purchasing the EUROLIVE B312A/B315A.
This active and extremely compact loudspeaker has been designed
specifically for those applications in which space is a problem.
The compact dimensions and the low weight, despite the highperformance power amp give this product maximum flexibility. The
input section accepts both line-level or microphone-level sources.
Additionally, the loudspeaker has a 2-band equalizer for accurate
high and lowfrequency control. All of these features make this
loudspeaker a high-quality and highly reliable companion on the
1.1 Shipment.............................................................................................3
1.2 Initial operation................................................................................3
Important notes concerning installation.................................3
1.3 Online registration..........................................................................3
2. Control Elements and Connections....................... 3
3. Application Examples............................................. 5
3.1 Using a mixing console.................................................................5
3.2 Using several B312A/B315A loudspeakers..........................5
3.3 Direct connection of a stereo signal source........................5
4. Installation................................................................ 5
5. Specifications........................................................... 6
Legal Disclaimer........................................................... 6
Warranty........................................................................ 7
This manual is available in English, German, French,
Spanish, Italian, Russian, Polish, Dutch, Finnish, Swedish,
Danish, Portugese, Greek, Japanese and Chinese. There may
also be more current versions of this document. Download them
by going to the appropriate product page at:
EUROLIVE B312A/B315A User Manual
Important Safety Instructions
* Caution
This symbol, wherever it appears, alerts you to the presence
of uninsulated dangerous voltage inside the enclosure voltage that may be sufficient to constitute a risk of shock.
This symbol, wherever it appears, alerts you to important
operating and maintenance instructions in the
accompanying literature. Please read the manual.
◊ To reduce the risk of electric shock, do not remove the top
cover (or the rear section). No user serviceable parts inside.
Refer servicing to qualified personnel.
◊ To reduce the risk of fire or electric shock, do not expose
this appliance to rain and moisture. The apparatus shall
not be exposed to dripping or splashing liquids and no
objects filled with liquids, such as vases, shall be placed on
the apparatus.
◊ These service instructions are for use by qualified service
personnel only. To reduce the risk of electric shock do not
perform any servicing other than that contained in the
operation instructions. Repairs have to be performed by
qualified service personnel.
Read these instructions.
Keep these instructions.
Heed all warnings.
Follow all instructions.
Do not use this apparatus near water.
Clean only with dry cloth.
Do not block any ventilation openings. Install in accordance with the
manufacturer’s instructions.
Do not install near any heat sources such as radiators, heat registers, stoves,
or other apparatus (including amplifiers) that produce heat.
Do not defeat the safety purpose of the polarized or grounding-type plug. A
polarized plug has two blades with one wider than the other. A groundingtype plug has two blades and a third grounding prong. The wide blade or the
third prong are provided for your safety. If the provided plug does not fit into
your outlet, consult an electrician for replacement of the obsolete outlet.
Place the power cord so that it is protected from being walked on and sharp
edges. Be sure that the power cord is protected particularly at plugs,
convenience receptacles and the point where it exits from the apparatus.
Use only attachments/accessories specified by the manufacturer.
Use only with the cart, stand, tripod, bracket,
or table specified by the manufacturer, or
sold with the apparatus. When a cart is used,
use caution when moving the cart/apparatus
combination to avoid injury from tip-over.
Unplug this apparatus during lightning storms
or when unused for long periods of time.
Refer all servicing to qualified service personnel. Servicing is required when
the apparatus has been damaged in any way, such as power supply cord or
plug is damaged, liquid has been spilled or objects have fallen into the
apparatus, the apparatus has been exposed to rain or moisture, does not
operate normally, or has been dropped.
The apparatus shall be connected to a MAINS socket outlet with a protective
earthing connection.
Where the MAINS plug or an appliance coupler is used as the disconnect
device, the disconnect device shall remain readily operable.
1. Before You Get Started
1.1 Shipment
Your product was carefully packed at the factory to ensure safe
transport. Nevertheless, if the box is damaged inspect the unit
immediately for signs of damage.
If the unit is damaged please do NOT return it to us, but notify your dealer
and the shipping company immediately; otherwise, claims for damage or
replacement may not be granted.
◊ Always use the original box to prevent damage during
storage or transport.
◊ Make sure that children cannot play unsupervised with the
unit or its packaging.
◊ Please ensure proper disposal of all packing materials.
1.2 Initial operation
Ensure adequate air supply and to avoid overheating do not
place the unit near radiators etc.
◊ Blown fuses must be replaced by fuses of the correct rating!
Please refer to the “Specifications” section for the
applicable rating.
For connection to the mains use the enclosed power cord with
cold connector which complies with the relevant safety
◊ Please make sure that all devices are properly grounded.
For your own safety, never remove or disable the ground
conductors from the devices or on the power cords. The
unit must always be connected to the mains outlet with a
protective grounding connection.
1.3 Online registration
Please register your new BEHRINGER equipment right after
your purchase by visiting and read
the terms and conditions of our warranty carefully.
Should your BEHRINGER product malfunction, it is our
intention to have it repaired as quickly as possible. To arrange
for warranty service, please contact the BEHRINGER retailer
from whom the equipment was purchased. Should your
BEHRINGER dealer not be located in your vicinity, you may
directly contact one of our subsidiaries. Corresponding contact
information is included in the original equipment packaging
(Global Contact Information/European Contact Information).
Should your country not be listed, please contact the distributor
nearest you. A list of distributors can be found in the support
area of our website (
Registering your purchase and equipment with us helps us
process your repair claims more quickly and efficiently.
Thank you for your cooperation!
2. Control Elements and
◊ This loudspeaker is capable of producing extreme volumes.
Please keep in mind that high sound pressures do not only
temporarily damage your sense of hearing, but can also
cause permanent hearing damage. Be careful to select a
suitable volume at all times.
Important notes concerning installation
◊ The sound quality may diminish within the range of
powerful broadcasting stations and high-frequency sources.
Increase the distance between the transmitter and the
device and use shielded cables for all connections.
Fig.2.1: Control elements and connections (B312A and B315A)
[1] Use this ¼" stereo jack to connect a signal source that has
¼" output.
[2] Use this XLR connector to connect a signal source that has
XLR output.
◊ Always use either the XLR or the ¼" jack input, and use the
LEVEL control {4} to adapt the input sensitivity. Never use
both inputs at the same time!
EUROLIVE B312A/B315A User Manual
EUROLIVE B312A/B315A User Manual
[3] The LINK OUTPUT is directly connected to the inputs
of the B312A/B315A and carries the input signal with no
processing applied. In this way, you can route the signal
to the input of another device (for example, a second
[4] To set the volume of the LINE or MIC signal, use the
LEVEL control. The left half of the control range is for
attenuating the LINE signal. The right half is for raising
the level of the MIC signal.
[5] The CLIP LED lights up when signal distortion occurs.
Reduce the volume with the LEVEL control until the CLIP
LED does not light up any more, or occasionally lights up at
signal peaks.
◊ We would like to draw your attention to the fact that
extremely loud sound levels may damage your hearing as
well as your headphones/loudspeakers. Turn the LEVEL
control fully to the left before you switch on the unit.
Be careful to select a suitable volume at all times.
[6] The HIGH control adjusts the high-frequency range.
[7] Use the LOW control to raise the level of the low-frequency
[8] The PWR LED lights up when the loudspeaker is put into
Fig.2.2: Control elements and connections B312A and B315A)
[9] You can replace fuses at the FUSE SWITCH of the
B312A/B315A. Always replace fuses with the same type.
Please follow the instructions given in the chapter
[10] The mains connection is established using a cable with
an IEC mains connector. This cable is delivered with the
B312A/B315A. To avoid ground-loop hum, loudspeakers
and mixing consoles should be connected to the same power
[11] Press POWER to turn on your B312A/B315A.
◊ The POWER switch does not fully disconnect the unit from
the mains. To disconnect the unit from the mains, pull out
the main cable plug or appliance coupler. When installing
the product, ensure the plug or appliance coupler is readily
operable. Unplug the power cord completely when the unit
is not used for prolonged periods of time.
[12] Serial number
3. Application Examples
4. Installation
◊ Turn the LEVEL control fully to the left before you switch
on the unit with the POWER switch. Then, raise the volume
to a suitable level.
Both audio inputs of the BEHRINGER B312A/B315A and the
LINK OUTPUT connector are fully balanced. To maximize
interference compensation, try to establish balanced connections
to other equipment, whenever possible.
3.1 Using a mixing console
A common way to use 2 B312A/B315A loudspeakers is with a
mixing console. In this case, connect each of the main outputs
that are on the mixing console to a B312A/B315A loudspeaker.
The B312A/B315A includes XLR and ¼" connectors. To avoid
interference, use only XLR or ¼" jack cables.
3.2 Using several B312A/B315A
Fig. 4.1: ¼" TRS connector
Output Left
Output Right
Fig. 3.1: Wiring several B312A/B315A loudspeakers using the LINK
OUTPUT connector
For larger rooms, you can connect several B312A/B315A
speakers using the LINK OUTPUT connector {3} (see fig. 3.1).
3.3 Direct connection of a stereo
signal source
When you use two B312A/B315A loudspeakers, you can directly
connect one stereo signal source, for example, a CD player.
In this case, each of the speakers is connected to 1 signal-source
output. (If necessary, use the appropriate adaptor.)
Fig. 4.2: XLR connectors
◊ Make sure that only competent people install your
B312A/B315A. They must be sufficiently earthed during
and after the installation process. Otherwise, electrostatic
discharges may negatively affect the operating characteristics of your equipment.
EUROLIVE B312A/B315A User Manual
EUROLIVE B312A/B315A User Manual
5. Specifications
Output power
Low-frequency range
RMS @ 1% THD
Peak power
High-frequency range
RMS @ 1% THD
Peak power
200 W @ 8 Ω
320 W @ 8 Ω
50 W @ 8 Ω
80 W @ 8 Ω
-40 to +4 dBu
20 kΩ
Link output
approx. 53.4 lb. (approx. 24.2 kg)
approx. 61.8 lb. (approx. 28.0 kg)
efforts, modifications may be made from time to time to existing products without prior notice.
Specifications and appearance may differ from those listed or illustrated.
Legal Disclaimer
Technical specifications and appearance are subject to change without notice.
The information contained herein is correct at the time of printing. All trade-
neither constitutes a claim of the trademarks by BEHRINGER nor affiliation
of the trademark owners with BEHRINGER. BEHRINGER accepts no liability
Frequency range
Crossover frequency
Maximum sound pressure level
Dynamic Equalizer
60 Hz to 18 kHz
2.1 kHz (12 dB)
125 dB @ 1 m
Frequency range
Crossover frequency
Maximum sound pressure level
Dynamic Equalizer
50 Hz to 18 kHz
1.8 kHz (12 dB)
126 dB @ 1 m
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. Colors
and specifications may vary slightly from product. Our products are sold through
authorized dealers only. Distributors and dealers are not agents of BEHRINGER
and have absolutely no authority to bind BEHRINGER by any express or
implied undertaking or representation. This manual is copyrighted. No part of
this manual may be reproduced or transmitted in any form or by any means,
electronic or mechanical, including photocopying and recording of any kind,
for any purpose, without the express written permission of BEHRINGER
International GmbH.
ALL RIGHTS RESERVED. © 2008 BEHRINGER International GmbH, HannsMartin-Schleyer-Str. 36-38, 47877 Willich, Germany.
Tel. +49 2154 9206 0, Fax +49 2154 9206 4903
12 kHz / ±15 dB
80 Hz / ±15 dB
Power supply
Mains voltage / Fuse
100 - 120 V~ (50/60 Hz)
220 - 240 V~ (50/60 Hz)
Mains connector
and EUROLIVE) mentioned belong to their respective owners, and such use
Loudspeaker system data
Power consumption
approx. 25.9" x 15.5" x 15.1"
(approx. 658 mm x 394 mm x 384 mm)
approx. 28.8" x 18.5" x 16.7"
(approx. 732 mm x 470 mm x 424 mm)
XLR connector
Dimensions (H x W x D)
BEHRINGER is constantly striving to maintain the highest professional standards. As a result of these
XLR connector (servo-balanced)
-40 to +4 dBu
Input impedance
20 kΩ
¼" TRS jack (servo-balanced)
Input impedance
max. 450 W
T 5.0 A H 250 V
T 2.5 A H 250 V
standard IEC receptacle
§ 1 Other warranty rights and national law
If the product needs to be modified or adapted in order to comply with appli-
This warranty does not exclude or limit the buyer’s statutory rights pro-
cable technical or safety standards on a national or local level, in any coun-
vided by national law, in particular, any such rights against the seller that
try which is not the country for which the product was originally developed
arise from a legally effective purchase contract.
and manufactured, this modification/adaptation shall not be considered a
The warranty regulations mentioned herein are applicable unless they
defect in materials or workmanship. The warranty does not cover any such
constitute an infringement of national warranty law.
modification/adaptation, irrespective of whether it was carried out properly
or not. Under the terms of this warranty, BEHRINGER shall not be held
§ 2 Online registration
responsible for any cost resulting from such a modification/adaptation.
Please do remember to register your new BEHRINGER equipment right after
Free inspections and maintenance/repair work are expressly excluded from
your purchase by visiting and kindly read the terms
this warranty, in particular, if caused by improper handling of the product
and conditions of our warranty carefully. Registering your purchase and equip-
by the user. This also applies to defects caused by normal wear and tear, in
ment with us helps us process your repair claims quicker and more efficiently.
particular, of faders, crossfaders, potentiometers, keys/buttons, tubes, guitar
strings, illuminants and similar parts.
Thank you for your cooperation!
Damage/defects caused by the following conditions are not covered by this
§ 3 Warranty
BEHRINGER (BEHRINGER International GmbH including all
• improper handling, neglect or failure to operate the unit in compliance
BEHRINGER subsidiaries, except BEHRINGER Japan) warrants the
with the instructions given in BEHRINGER user or service manuals;
mechanical and electronic components of this product to be free of defects
• connection or operation of the unit in any way that does not comply with
in material and workmanship for a period of one (1) year* from the original
the technical or safety regulations applicable in the country where the
date of purchase, in accordance with the warranty regulations described
product is used;
below. If the product shows any defects within the specified warranty
• damage/defects caused by force majeure or any other condition that is
period that are not excluded from this warranty as described under § 5,
BEHRINGER shall, at its discretion, either replace or repair the product
beyond the control of BEHRINGER.
Any repair or opening of the unit carried out by unauthorized personnel
(user included) will void the warranty.
using suitable new or reconditioned parts. In the case that other parts are
used which constitute an improvement, BEHRINGER may, at its discretion,
If an inspection of the product by BEHRINGER shows that the defect in
question is not covered by the warranty, the inspection costs are payable by
charge the customer for the additional cost of these parts.
the customer.
If the warranty claim proves to be justified, the product will be returned to
the user freight prepaid.
Products which do not meet the terms of this warranty will be repaired exclusively at the buyer’s expense. BEHRINGER will inform the buyer of any
Warranty claims other than those indicated above are expressly excluded.
such circumstance. If the buyer fails to submit a written repair order within
§ 4 Return authorization number
6 weeks after notification, BEHRINGER will return the unit C.O.D. with
To obtain warranty service, the buyer (or his authorized dealer) must
a separate invoice for freight and packing. Such costs will also be invoiced
call BEHRINGER during normal business hours BEFORE returning the
separately when the buyer has sent in a written repair order.
product. All inquiries must be accompanied by a description of the problem.
BEHRINGER will then issue a return authorization number.
§ 6 Warranty transferability
Subsequently, the product must be returned in its original shipping carton,
This warranty is extended exclusively to the original buyer (customer of retail
together with the return authorization number to the address indicated by
dealer) and is not transferable to anyone who may subsequently purchase this
product. No other person (retail dealer, etc.) shall be entitled to give any war-
Shipments without freight prepaid will not be accepted.
ranty promise on behalf of BEHRINGER.
§ 5 Warranty regulations
§ 7 Claim for damage
Warranty services will be furnished only if the product is accompanied by a
Failure of BEHRINGER to provide proper warranty service shall not entitle
copy of the original retail dealer’s invoice. Any product deemed eligible for
the buyer to claim (consequential) damages. In no event shall the liability of
repair or replacement under the terms of this warranty will be repaired or
BEHRINGER exceed the invoiced value of the product.
Customers in the European Union please contact BEHRINGER Germany Support for further details.
EUROLIVE B312A/B315A User Manual
This manual is available in English, German, French,
Spanish, Italian, Russian, Polish, Dutch, Finnish, Swedish,
Danish, Portugese, Greek, Japanese and Chinese. There may
also be more current versions of this document. Download them
by going to the appropriate product page at: