User’s manual
Version 1ꢀ0 January 2005
ULTRABASS BT108
ULTRABASS
Ultra-Compact 15-Watt Bass Amp with VTC-Technology
s Extremely versatile bass amplifier
s Powerful 20-Watt, 8" speaker
s VTC Virtual Tube Circuitry for tube-like sound
s Dedicated 4-band EQ for ultimate sound control and flexibility
s CD input allows you to play along to your favorite music
s Separate headphone output — perfect for quiet practicing
s High-quality components and exceptionally rugged construction ensure long life
s Conceived and designed by BEHRINGER Germany
3
ULTRABASS BT108
FOREWORD
TABLE OF CONTENTS
Dear musician,
1ꢀ INTRODUCTION ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
Congratulations and
1ꢀ1 Before you get started ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
1ꢀ1ꢀ1 Shipment ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
1ꢀ1ꢀ2 Initial operation ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 5
1ꢀ1ꢀ3 Online registration ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 5
thank you very much for
purchasing the BT108,
the newest addition to
BEHRINGER’s range of
bass
amplification
productsꢀ
2ꢀ WIRING TIPS ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ5
3ꢀ CONTROL ELEMENTS ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ6
4ꢀ AUDIO CONNECTIONSꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ6
5ꢀ SPECIFICATIONS ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ7
6ꢀ WARRANTY ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ8
The ULTRABASS BT108
offers the latest in bass
amps, and is guaranteed
to be an inspiring
companion wherever
music takes youꢀ
Had anybody told you a
few years ago that one
day you’d be able to buy
a
bass amp with
authentic tube sound at
such an unbeatable
price, you would have
probably called him nutsꢀ But I wanted this amp to become reality,
and now we‘ve actually made it! With our ULTRABASS BT108
you can now follow in the footsteps of all the big bass legendsꢀ
Simply unpack it, plug it in and you’re ready to go! The ULTRABASS
BT108 gives you everything your heart desiresꢀ
1ꢀ INTRODUCTION
Congratulations! By purchasing the BT108, you have obtained
a first-class bass amplifier that offers you the authentic tube-like
sound in an amazingly compact housingꢀ
What we really wanted was to give you a truly high-quality bass
ampꢀ Believe me: With all those years of experience under our
belt, we know what an amp needs to put up withꢀ No matter how
often you practice or how many sessions you have with your
friends: when it comes to quality and sound, your
ULTRABASS BT108 will give you years and years of pure
enjoymentꢀ
The ULTRABASS BT108 amplifier was designed specifically
for practicingꢀ You can do the finishing touches using the precise
4-band EQꢀ With its well-balanced basic sound it gives you what
is most important when playing: lots of fun!
VTC Virtual Tube Circuitry
The VTC Virtual Tube Circuitry was specially developed to
lend the bass sound the unique character of classic tube ampsꢀ
Now, just in case you’re wondering how we can offer such a
high-quality bass amp at such an unbelievably low priceꢀꢀꢀ the
answer is totally simple: it’s thanks to you! Many satisfied
customers means large volumes of units soldꢀ Many units sold
means better purchase prices for components, and so onꢀ So,
we just passed this price advantage on to youꢀ It’s only fair, isn’t
it?
Jam it up!
With its CD player input, your BT108 is the ultimate practice
amp, because it couldn’t be easier to play along to your favorite
musicꢀ If you don’t want anybody listening to what you’re playing,
or simply wish to avoid disturbing the neighbors, just use your
headphonesꢀ The BEHRINGER HPS3000 is ideal just for thatꢀ
Enough talk nowꢀ One day, when you’re one of those legendary
bassists yourself, we hope you’ll say that your first real bass
amp was a BEHRINGERꢀ In that case, you have made a dream
come true for us, tooꢀ
A companion for life!
The electronic components in your ULTRABASS BT108 have
been built into a robust metal enclosure for maximum protectionꢀ
The cabinet is made of high-grade wood covered with durable
vinylꢀ The BT108 will never let you down, even when the going
gets toughꢀ
Thank you very much,
+
Please read the manual carefully and keep it around
for future reference!
ATTENTION!
Uli Behringer
+
High volume levels can damage your hearing or your
headphones! Please turn down the VOLUME control
to zero (all the way to the left) before you power up
the amp! Always make sure you use appropriate
volume levels!
1ꢀ1 Before you get started
1ꢀ1ꢀ1 Shipment
Your BT108 was carefully packed at the factory, and the
packaging was designed to protect the unit from rough handlingꢀ
Nevertheless, we recommend that you carefully examine the
packaging and its contents for any signs of physical damage
that may have occurred during transitꢀ
4
1ꢀ INTRODUCTION
ULTRABASS BT108
+
If the unit is damaged, please do NOT return it to
BEHRINGER! Instead, notify your dealer and the
shipping company immediately! Otherwise, claims
for damage or replacement may not be honored!
+
+
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Always use the original packing carton to prevent
damage during storage or transport!
Make sure that no children are left unsupervised
with the BT108 or its packaging!
Please ensure proper disposal of all packing materials!
1ꢀ1ꢀ2 Initial operation
Be sure that there is enough space around the unit for coolingꢀ
To avoid overheating, please do not place the ULTRABASS near
radiators and other equipment emanating heatꢀ
+
Please keep in mind that all the equipment has to
be grounded at all times! For your own protection,
never change or disable the grounding on your
equipment or on the cables! The unit shall always
be connected to the mains socket outlet with a
protective earthing connection!
1ꢀ1ꢀ3 Online registration
Please do remember to register your new BEHRINGER
equipment right after your purchase by visiting
wwwꢀbehringerꢀcom (alternatively wwwꢀbehringerꢀde) and
kindly read the terms and conditions of our warranty carefullyꢀ
Figꢀ 2ꢀ1: Example of a setup using the ULTRABASS BT108
Figꢀ 2ꢀ2 shows a recommended setup for amplifying the sound
of your BT108 using a sound reinforcement system of any sizeꢀ
This way, you can also use your amp for playing live or for
rehearsals with your bandꢀ
Should your BEHRINGER product malfunction, our goal is to
have it repaired as quickly as possibleꢀ To arrange for warranty
service, please contact the retailer from whom the equipment
was purchasedꢀ Should your BEHRINGER dealer not be located in
your vicinity, you may directly contact one of our subsidiariesꢀ
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 youꢀ A list of distributors can be
found in the support area of our website (wwwꢀbehringerꢀcom/)ꢀ
Registering your purchase and equipment with us helps us
process your repair claims quicker and more efficientlyꢀ
Thank you for your cooperation!
2ꢀ WIRING TIPS
Figures 2ꢀ1 and 2ꢀ2 show you how to connect your bass to
the amplifierꢀ
If you want to use an effects unit (for example, the BEHRINGER
X V-AMP PRO) to experiment with some out-of-the-ordinary
sounds, you can connect your bass directly to the input of the
unitꢀ Then, connect a second cable from the effects output to the
input on your bass ampꢀ
If you have an electronic tuner, please be sure to insert it pre
effects device, so that the tuner only receives a dry signal without
effects componentsꢀ
X V-AMP PRO: no additional tuner requiredꢀ
+
The built-in loudspeaker is disabled automatically
when you plug in the headphones!
Figꢀ 2ꢀ2: Live setup
5
2ꢀ WIRING TIPS
ULTRABASS BT108
3ꢀ CONTROL ELEMENTS
Figꢀ 3ꢀ1: Upper side: Control elements
Connect your bass to the INSTꢀ INPUT jack, using a
standard cable with a 1/4" TS connectorꢀ
Use the VOLUME control to adjust the volume of the
instrument channelꢀ To change the instrument-to-CD volume
ratio, use your instrument’s volume controlꢀ
Use the CD INPUT to connect the output of your CD player,
tape deck, CD or MD walkmanꢀ This way you can play
along to music or bass guitar tutorial CDsꢀ
This connector is a 1/4" TRS jackꢀ If your CD player is
equipped with cinch outputs, you‘ll need an adapter cable,
which you can buy at your local music shopꢀ Illustration 4ꢀ3
in chapter 4ꢀ “AUDIO CONNECTIONS” shows you what
kind of adapter to buyꢀ You can also use a mono cable (figꢀ
4ꢀ4)ꢀ This will not damage your CD player or bass ampꢀ
Figꢀ 3ꢀ2 Rear view: Serial number
SERIAL NUMBERꢀ
No matter which way you adjust the controls on your bass
amp: the sound of your bass also has some influence on the
overall soundꢀ Therefore we may only give you a few tips to get
you startedꢀ
The LOW control allows you to boost or cut the low-
frequency rangeꢀ
+
Most bass guitars sound best when their tone and
volume controls are turned up as much as possible!
Using the LOW MID control you can boost or cut the lower
midsꢀ
The HIGH MID control allows you to boost or cut the upper
midsꢀ
Experiment with the controls to find out how you can modify
the sound to your likingꢀ Experienced bassists write down their
favorite settings or attach stickies underneath the controlsꢀ
The HIGH control governs the high-frequency range to
give your bass a more “cutting” soundꢀ
The HEADPHONES jack is for headphonesꢀ When you
plug in your headphones, the built-in loudspeaker is mutedꢀ
4ꢀ AUDIO CONNECTIONS
Your BEHRINGER ULTRABASS BT108 features 1/4" connectors
on inputs and outputsꢀ More detailed information can be found in
chapter 5, “SPECIFICATIONSꢀ”
+
+
The headphone signal can also be routed to a mixing
console or sound reinforcement system! Connect
the headphones output on your BT108 to the line
input (LINE IN) on the console (for example,
BEHRINGER EURORACK UB1222FX-PRO)! Please use a
mono cable for this application!
+
Please keep in mind that all the equipment has to
be grounded at all times! For your own protection,
never change or disable the grounding on your
equipment or on the cables! The unit shall always
be connected to the mains socket outlet with a
protective earthing connection!
Some headphones produce distortion if the volume
level is too high! Please cut back the VOLUME control
until the distortion disappears!
Use the POWER switch to switch on your BT108ꢀ The
POWER switch should be set to “Off” before you connect
your bass amp to the mainsꢀ
+
Please note: The POWER switch does not disconnect
the unit from the mains! Unplug the power cord
when you don’t want to use the unit for some time!
Figꢀ 4ꢀ1: 1/4" mono connector (TS) for the INSTꢀ INPUT
6
4ꢀ AUDIO CONNECTIONS
ULTRABASS BT108
5ꢀ SPECIFICATIONS
INPUTS
Instrument input
Connector
1/4" TS mono connector
CD or audio input
Connector
1/4" TRS stereo connector
OUTPUTS
Headphones output
Connector
1/4" TRS stereo connector
15 Watts
SYSTEM DATA
Output stage power
Figꢀ 4ꢀ2: 1/4" stereo connector (TRS) for headphones or
CD INPUT
LOUDSPEAKER
Type
8" special custom-made
loudspeaker
4 Ω
Impedance
Power rating
20 Watts
POWER SUPPLY
Mains voltage
USA/Canada 120 V~, 60 Hz
UꢀKꢀ/Australia 230 V~, 50 Hz
China
Europe
Japan
220 V~, 50 Hz
230 V~, 50 Hz
100V~, 50-60Hz
DIMENSIONS/WEIGHT
Dimensions (H x W x D)
approxꢀ 13 1/8" x 14 1/16" x 6 3/8"
(322 mm x 357 mm x 162 mm)
approxꢀ 5ꢀ6 kg (11 lbsꢀ 3 ozꢀ)
Weight
Figꢀ 4ꢀ3: Stereo adapter cable
Figꢀ 4ꢀ4: Mono adapter cable
BEHRINGER is constantly striving to maintain the highest professional standardsꢀ As a
result of these efforts, modifications may be made from time to time to existing products without
prior noticeꢀ Specifications and appearance may differ from those listed or shownꢀ
7
5ꢀ SPECIFICATIONS
ULTRABASS BT108
6ꢀ WARRANTY
2ꢀ If the product needs to be modified or adapted in order to
comply with applicable technical or safety standards on a national
or local level, in any country which is not the country for which
the product was originally developed and manufactured, this
modification/adaptation shall not be considered a defect in
materials or workmanshipꢀ The warranty does not cover any
such modification/adaptation, irrespective of whether it was
carried out properly or notꢀ Under the terms of this warranty,
BEHRINGER shall not be held responsible for any cost resulting
from such a modification/adaptationꢀ
§ 1 OTHER WARRANTY RIGHTS AND NATIONAL LAW
1ꢀ This warranty does not exclude or limit the buyer’s statutory
rights provided by national law, in particular, any such rights
against the seller that arise from a legally effective purchase
contractꢀ
2ꢀ The warranty regulations mentioned herein are applicable
unless they constitute an infringement of national warranty lawꢀ
§ 2 ONLINE REGISTRATION
3ꢀ Free inspections and maintenance/repair work are expressly
excluded from this warranty, in particular, if caused by improper
handling of the product by the userꢀ This also applies to defects
caused by normal wear and tear, in particular, of faders,
crossfaders, potentiometers, keys/buttons, tubes, guitar strings,
illuminants and similar partsꢀ
Please do remember to register your new BEHRINGER
equipment right after your purchase by visiting
wwwꢀbehringerꢀcom (alternatively wwwꢀbehringerꢀde) and
kindly read the terms and conditions of our warranty carefullyꢀ
Registering your purchase and equipment with us helps us
process your repair claims quicker and more efficientlyꢀ Thank
you for your cooperation!
4ꢀ Damages/defects caused by the following conditions are
not covered by this warranty:
§ 3 WARRANTY
s improper handling, neglect or failure to operate the unit in
compliance with the instructions given in BEHRINGER user
or service manualsꢀ
1ꢀ BEHRINGER (BEHRINGER International GmbH including all
BEHRINGER subsidiaries listed on the enclosed page, except
BEHRINGER Japan) warrants the mechanical and electronic
components of this product to be free of defects in material and
workmanship for a period of one (1) year* from the original date
of purchase, in accordance with the warranty regulations
described belowꢀ If the product shows any defects within the
specified warranty period that are not excluded from this
warranty as described under § 5, BEHRINGER shall, at its
discretion, either replace or repair the product using suitable
new or reconditioned partsꢀ In the case that other parts are used
which constitute an improvement, BEHRINGER may, at its
discretion, charge the customer for the additional cost of these
partsꢀ
s connection or operation of the unit in any way that does not
comply with the technical or safety regulations applicable in
the country where the product is usedꢀ
s damages/defects caused by force majeure or any other
condition that is beyond the control of BEHRINGERꢀ
5ꢀ Any repair or opening of the unit carried out by unauthorized
personnel (user included) will void the warrantyꢀ
6ꢀ 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 the customerꢀ
2ꢀ If the warranty claim proves to be justified, the product will
be returned to the user freight prepaidꢀ
7ꢀ Products which do not meet the terms of this warranty will
be repaired exclusively at the buyer’s expenseꢀ BEHRINGER will
inform the buyer of any such circumstanceꢀ If the buyer fails to
submit a written repair order within 6 weeks after notification,
BEHRINGER will return the unit CꢀOꢀDꢀ with a separate invoice
for freight and packingꢀ Such costs will also be invoiced
separately when the buyer has sent in a written repair orderꢀ
3ꢀ Warranty claims other than those indicated above are
expressly excludedꢀ
§ 4 RETURN AUTHORIZATION NUMBER
1ꢀ To obtain warranty service, the buyer (or his authorized
dealer) must call BEHRINGER (see enclosed list) during normal
business hours BEFORE returning the productꢀ All inquiries must
be accompanied by a description of the problemꢀ BEHRINGER
will then issue a return authorization numberꢀ
§ 6 WARRANTY TRANSFERABILITY
This warranty is extended exclusively to the original buyer
(customer of retail dealer) and is not transferable to anyone
who may subsequently purchase this productꢀ No other person
(retail dealer, etcꢀ) shall be entitled to give any warranty promise
on behalf of BEHRINGERꢀ
2ꢀ Subsequently, the product must be returned in its original
shipping carton, together with the return authorization number to
the address indicated by BEHRINGERꢀ
§ 7 CLAIM FOR DAMAGES
3ꢀ Shipments without freight prepaid will not be acceptedꢀ
Failure of BEHRINGER to provide proper warranty service shall
not entitle the buyer to claim (consequential) damagesꢀ In no
event shall the liability of BEHRINGER exceed the invoiced value
of the productꢀ
§ 5 WARRANTY REGULATIONS
1ꢀ Warranty services will be furnished only if the product is
accompanied by a copy of the original retail dealer’s invoiceꢀ
Any product deemed eligible for repair or replacement under the
terms of this warranty will be repaired or replacedꢀ
* Customers in the European Union please contact BEHRINGER
Germany Support for further detailsꢀ
Technical specifications and appearance subject to change without noticeꢀ The information contained herein is correct at the time of
printingꢀ The names of companies, institutions or publications pictured or mentioned and their respective logos are registered trademarks
of their respective ownersꢀ Their use neither constitutes a claim of the trademarks by BEHRINGER® nor affiliation of the trademark
owners with BEHRINGER®ꢀ BEHRINGER® 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 hereinꢀ Colours and specification may vary slightly from productꢀ
Products are sold through our authorised dealers onlyꢀ Distributors and dealers are not agents of BEHRINGER® and have absolutely no
authority to bind BEHRINGER® by any express or implied undertaking or representationꢀ 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 Spezielle Studiotechnik GmbHꢀ BEHRINGER® is a registered trademarkꢀ
ALLRIGHTS RESERVEDꢀ © 2005 BEHRINGER Spezielle Studiotechnik GmbH,
Hanns-Martin-Schleyer-Strꢀ 36-38, 47877 Willich-Münchheide II, Germanyꢀ
Telꢀ +49 2154 9206 0, Fax +49 2154 9206 4903
8
6ꢀ WARRANTY
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