Behringer ULTRATONE KT108 User manual

Version 1.0 March 2005
Users manual
ULTRATONE KT108

2
ULTRATONE KT108
IMPORTANT SAFETY INSTRUCTIONS
CAUTION: 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.
WARNING: 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 and no objects filled ith liquids, such
as vases, shall be placed on the apparatus.
DETAILED SAFETY INSTRUCTIONS:
1) Read these instructi ns.
2) Keep these instructi ns.
3) Heed all warnings.
4) F ll w all instructi ns.
5) D n t use this apparatus near water.
6) Clean nly with dry cl th.
7) D n t bl ck any ventilati n penings. Install in
acc rdance with the manufacturers instructi ns.
8) D n t install near any heat s urces such as radiat rs,
heat registers, st ves, r ther apparatus (including
amplifiers) that pr duce heat.
9) D n t defeat the safety purp se f the p larized r
gr unding-type plug. A p larized plug has tw blades
with ne wider than the ther. A gr unding type plug
has tw blades and a third gr unding pr ng. The wide
blade r the third pr ng are pr vided f r y ur safety. If
the pr vided plug d es n t fit int y ur utlet, c nsult
an electrician f r replacement f the bs lete utlet.
10) Pr tect the p wer c rd fr m being walked n r
pinched particularly at plugs, c nvenience receptacles,
and the p int where they exit fr m the apparatus.
11) Only use attachments/access ries specified by the
manufacturer.
12) Use nly with the cart, stand, trip d, bracket, r table
specified by the manufacturer, r s ld with the
apparatus. When a cart is used, use cauti n when m ving
the cart/apparatus c mbinati n t av id injury fr m
tip- ver.
13) Unplug this apparatus during lightning st rms r
when unused f r l ng peri ds f time.
14) Refer all servicing t qualified service pers nnel.
Servicing is required when the apparatus has been
damaged in any way, such as p wer supply c rd r plug
is damaged, liquid has been spilled r bjects have fallen
int the apparatus, the apparatus has been exp sed t
rain r m isture, d es n t perate n rmally, r has been
dr pped.
15) CAUTION - These service instructi ns are f r use by
qualified service pers nnel nly. T reduce the risk f
electric sh ck d n t perf rm any servicing ther than
that c ntained in the perati n instructi ns unless y u
are qualified t d s .
This symbol, herever 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, herever it appears, alerts you to
important operating and maintenance instructions
in the accompanying literature. Please read the
manual.

3
ULTRATONE KT108
ULTRATONE
Ultracompact 15-Watt Keyboard Amplifier with VT -Technology
sExtremely versatile 2-channel keyboard amplifier
sowerful 20-Watt, 8" dual-cone speaker for wide frequency response
s2 instrument inputs with separate volume control for each channel
sVTC Virtual Tube Circuitry tube-like sound
sDedicated 3-band EQ
sCD input allows you to play along to your favorite music
sSeparate headphone outputperfect for quiet practicing
sHigh-quality components and exceptionally rugged construction ensure long life
sConceived and designed by BEHRINGER Germany
KT108

4
ULTRATONE KT108
1. INTRODUCTION
Congratulations! By purchasing the KT108, you have obtained
a first-class keyboard amplifier that offers you the authentic
tube sound simulation in an amazingly compact housing. The
t o instrument inputs and the additional CD player input make
the ULTRATONE KT108 a truly flexible practice amp that ill be
tons of fun to use, no matter here or hen you use it.
VTC Virtual Tube Circuitry
The VTC Virtual Tube Circuitry as specially developed to
lend the keyboard sound the unique character of classic tube
amps.
Jam it up!
With its CD player input, your KT108 is the ultimate practice
amp, because it couldnt be easier to play along to your favorite
music. If you dont ant anybody listening to hat youre playing,
or simply ish to avoid disturbing the neighbors, just use your
headphones. The BEHRINGER HPS3000 is ideal just for that.
A c mpani n f r life!
The electronic components in your ULTRATONE KT108 have
been built into a robust metal enclosure for maximum protection.
The cabinet is made of high-grade ood covered ith durable
vinyl. The KT108 ill never let you do n, even hen the going
gets tough.
+Please read the manual carefully and keep it ar und
f r future reference.
ATTENTION!
+High v lume levels can damage y ur hearing r y ur
headph nes. Please turn the v lume c ntr l t zer
(all the way t the left) bef re y u p wer up the amp.
Always make sure y u use appr priate v lume levels.
FOREWORD
Dear musician,
Congratulations and
thank you very much for
purchasing the KT108
BEHRINGER keyboard
amplifier.
The ULTRATONE KT108
is a truly versatile
keyboard amp that ill be
loads of fun to use.
Had anybody told you a
fe years ago that one
day youd be able to buy
a keyboard amp ith
authentic tube sound
simulation at such an
unbeatable price, you
ould have probably
called him nuts.
But I anted this amp to become reality, and no eve actually
made it! With our ULTRATONE KT108 you can no follo in the
footsteps of all the big keyboard legends. Simply unpack it, plug
it in and youre ready to go! The ULTRATONE KT108 gives you
everything your heart desires.
What e really anted as to give you a truly high-quality
keyboard amp. Believe me: With all those years of experience
under our belt, e kno hat an amp needs to put up ith. No
matter ho often you practice or ho many sessions you have
ith your friends: hen it comes to quality and sound, your
ULTRATONE KT108 ill give you years and years of pure
enjoyment.
No , just in case youre ondering ho e can offer such a
high-quality keyboard amp at such an unbelievably lo price...
the ans er is totally simple: its thanks to you! Many satisfied
customers means large volumes of units sold. Many units sold
means better purchase prices for components, and so on. So, e
just passed this price advantage on to you. Its only fair, isnt it?
Enough talk no . One day, hen youre one of those legendary
keyboard players yourself, e hope youll say that your first
real keyboard amp as a BEHRINGER. In that case, you have
made a dream come true for us, too.
We ish you lots of success!
Thank you very much,
Uli Behringer
1. INTRODUCTION
TABLE OF CONTENTS
1. INTRODUCTION ......................................................... 4
1.1 Before you get started ................................................. 5
1.1.1 Shipment ............................................................. 5
1.1.2 Initial operation .................................................... 5
1.1.3 Online registration .............................................. 5
2. WIRING TIPS .............................................................. 5
3. CONTROL ELEMENTS ............................................... 6
4. AUDIO CONNECTIONS ............................................... 7
5. SPECIFICATIONS ....................................................... 7
6. WARRANTY ................................................................ 8

5
ULTRATONE KT108
2. WIRING TI S
1.1 Before you get started
1.1.1 Ship ent
Your KT108 as carefully packed at the factory, and the
packaging as designed to protect the unit from rough handling.
Nevertheless, e recommend that you carefully examine the
packaging and its contents for any signs of physical damage
that may have occurred during transit.
+If the unit is damaged, please d NOT return it t
BEHRINGER. Instead, n tify y ur dealer and the
shipping c mpany immediately. Otherwise, claims
f r damage r replacement may n t be h n red.
+Always use the riginal packing cart n t prevent
damage during st rage r transp rt.
+Make sure that n children are left unsupervised
with the KT108 r its packaging.
+Please ensure pr per disp sal f all packing
materials.
1.1.2 Initial operation
Be sure that there is enough space around the unit for cooling.
To avoid overheating, please do not place the ULTRATONE near
radiators and other equipment emanating heat.
+Please keep in mind that all the equipment has t
be gr unded at all times. F r y ur wn pr tecti n,
never change r disable the gr unding n y ur
equipment r n the cables! The unit shall always
be c nnected t the mains s cket utlet with a
pr tective earthing c nnecti n.
1.1.3 Online registration
Please do remember to register your ne BEHRINGER
equipment right after your purchase by visiting
.behringer.com (alternatively .behringer.de) and
kindly read the terms and conditions of our arranty carefully.
Should your BEHRINGER product malfunction, our goal is to
have it repaired as quickly as possible. To arrange for arranty
service, please contact the retailer from hom the equipment
as 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 ebsite ( .behringer.com).
Registering your purchase and equipment ith us helps us
process your repair claims quicker and more efficiently.
Thank you for your cooperation!
2. WIRING TIPS
Figures 2.1 and 2.2 sho you ho to connect your keyboard
to the amplifier.
If you ant to use an effects unit (for example, the BEHRINGER
X V-AMP) to experiment ith some out-of-the-ordinary sounds,
you can connect your keyboard directly to the input of the effects
processor. Then, connect a second cable from the effects output
to the input on your keyboard amp.
+The built-in l udspeaker is disabled aut matically
when y u plug in the headph nes .
Fig. 2.1: Example of a setup using the ULTRATONE KT10
Fig. 2.2 sho s a recommended setup for amplifying the vintage
sound of your KT108 using a sound reinforcement system of
any size. This ay, you can also use your amp for playing live or
for rehearsals ith your band.
Fig. 2.2: Live setup

6
ULTRATONE KT108
3. CONTROL ELEMENTS
3. CONTROL ELEMENTS
Fig. 3.1: Control elements on the front panel
Connect your keyboard to the INST. 1 INPUT connector,
using a standard instrument cable equipped ith 1/4" TS
connectors.
The second instrument input (INST. 2 INPUT) can of course
be used to connect a second keyboard or a drum computer.
The volume of both instrument channels can be adjusted
using the INST. 1 VOL and INST. 2 VOL control.
Use the CD INPUT to connect the output of your CD player,
tape deck, CD or MD alkman. This ay you can play
along to music or keyboard tutorial CDs.
This connector is a 1/4" TRS jack. If your CD player is
equipped ith cinch outputs, youll need an adapter cable,
hich you can buy at your local music shop. Illustration 4.3
in chapter 4. AUDIO CONNECTIONS sho s you hat
kind of adapter to buy. You can also use a mono cable (fig.
4.4). This ill not damage your CD player or keyboard amp.
The LOW control allo s you to boost or cut the lo -
frequency range.
With the MID control you can boost or cut the mid-range
frequencies.
The HIGH control adjusts the high-frequency range.
+With all the settings the f ll wing applies: Adjusting
the t ne settings n y ur KT108 lets y u refine the
s und f y ur keyb ard; f r example, y u can add
m re depth t a bass s und, r y u can bring ut
the strings upfr nt by increasing the mids.
S metimes m re neutral settings are desired in
rder t preserve the character f the riginal
s und.
The HEADPHONES jack is for headphones. When you
plug in your headphones, the built-in loudspeaker is muted.
+The headph ne signal can als be r uted t a mixing
c ns le r s und reinf rcement system. C nnect
the headph nes utput n y ur KT108 t the line
input (LINE IN) n the c ns le (f r example,
BEHRINGER EURORACK UB1222FX-PRO). Please use a
m n cable f r this applicati n.
+S me headph nes pr duce dist rti n if the v lume
level is t high. Please cut back the v lume c ntr l
until the dist rti n disappears.
Use the POWER s itch to s itch on your KT108. The
POWER s itch should be set to Off before you connect
your keyboard amp to the mains.
+Please n te: The POWER switch d es n t disc nnect
the unit fr m the mains. Unplug the p wer c rd
when y u d nt want t use the unit f r s me time.
SERIAL NUMBER.
Fig.: 3.2 Rear panel: serial number

7
ULTRATONE KT108
5. S ECIFICATIONS
BEHRINGER is constantly striving to maintain the highest professional standards. As a
result of these efforts, modifications may be made from time to time to e isting products without
prior notice. Specifications and appearance may differ from those listed or shown.
4. AUDIO CONNECTIONS
All of your amps inputs and outputs are laid out as 1/4"
connectors. More information about the connectors can be found
in chapter 5. SPECIFICATIONS.
+Please keep in mind that all the equipment has t
be gr unded at all times. F r y ur wn pr tecti n,
never change r disable the gr unding n y ur
equipment r n the cables! The unit shall always
be c nnected t the mains s cket utlet with a
pr tective earthing c nnecti n.
Fig. 4.1: 1/4" TS plug for the INSTRUMENT INPUT (mono)
Fig. 4.2: 1/4" TRS plug for headphones and CD input
Fig. 4.3: Stereo adapter cable
Fig. 4.4: Mono adapter cable
5. SPECIFICATIONS
AUDIO INPUTS
Keyboard input 1/2
Connector 1/4" TS mono connectors
CD input
Connector 1/4" TRS stereo connector
AUDIO OUTPUT
Headphones output
Connector 1/4" TRS stereo connector
SYSTEM SPECIFICATIONS
Po er amp output 15 Watts
LOUDSPEAKER
Type 8" dual-cone full-range
loudspeaker
Impedance 4 Ω
Po er rating 20 Watts
POWER SUPPLY
Mains voltage
USA/Canada 120 V~, 60 Hz
U.K./Australia 230 V~, 50 Hz
Europe 230 V~, 50 Hz
Japan 100 V~, 50 - 60 Hz
DIMENSIONS/WEIGHT
Dimensions
(H x W x D) approx. 322 mm (13 1/8")
x 357 mm (14 1/16")
x 162 mm (6 3/8")
Weight approx. 5 kg (10 lbs.)

8
ULTRATONE KT108
6. WARRANTY
Technical specifications and appearance subject to change ithout notice. The information contained herein is correct at the time of
printing. The names of companies, institutions or publications pictured or mentioned and their respective logos are registered
trademarks of their respective o ners. Their use neither constitutes a claim of the trademarks by BEHRINGER® nor affiliation of the
trademark o ners ith BEHRINGER®. BEHRINGER® accepts no liability for any loss hich may be suffered by any person ho relies
either holly or in part upon any description, photograph or statement contained herein. Colours and specification may vary slightly
from product. Products are sold through our authorised 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. 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, ithout the express ritten permission of BEHRINGER Spezielle Studiotechnik GmbH. BEHRINGER® is a
registered trademark.
ALL RIGHTS RESERVED. © 2005 BEHRINGER Spezielle Studiotechnik GmbH,
Hanns-Martin-Schleyer-Str. 36-38, 47877 Willich-Münchheide II, Germany.
Tel. [phone], Fax [phone]
6. WARRANTY
§ 1 OTHER WARRANTY RIGHTS AND NATIONAL LAW
1. This arranty does not exclude or limit the buyers statutory
rights provided by national la , in particular, any such rights
against the seller that arise from a legally effective purchase
contract.
2. The arranty regulations mentioned herein are applicable
unless they constitute an infringement of national arranty la .
§ 2 ONLINE REGISTRATION
Please do remember to register your ne BEHRINGER
equipment right after your purchase by visiting
.behringer.com (alternatively .behringer.de) and
kindly read the terms and conditions of our arranty carefully.
Registering your purchase and equipment ith us helps us
process your repair claims quicker and more efficiently. Thank
you for your cooperation!
§ 3 WARRANTY
1. BEHRINGER (BEHRINGER International GmbH including all
BEHRINGER subsidiaries listed on the enclosed page, except
BEHRINGER Japan) arrants the mechanical and electronic
components of this product to be free of defects in material and
orkmanship for a period of one (1) year* from the original date
of purchase, in accordance ith the arranty regulations
described belo . If the product sho s any defects ithin the
specified arranty period that are not excluded from this
arranty as described under § 5, BEHRINGER shall, at its
discretion, either replace or repair the product using suitable
ne or reconditioned parts. In the case that other parts are used
hich constitute an improvement, BEHRINGER may, at its
discretion, charge the customer for the additional cost of these
parts.
2. If the arranty claim proves to be justified, the product ill
be returned to the user freight prepaid.
3. Warranty claims other than those indicated above are
expressly excluded.
§ 4 RETURN AUTHORIZATION NUMBER
1. To obtain arranty service, the buyer (or his authorized
dealer) must call BEHRINGER (see enclosed list) during normal
business hours BEFORE returning the product. All inquiries must
be accompanied by a description of the problem. BEHRINGER
ill then issue a return authorization number.
2. Subsequently, the product must be returned in its original
shipping carton, together ith the return authorization number to
the address indicated by BEHRINGER.
3. Shipments ithout freight prepaid ill not be accepted.
§ 5 WARRANTY REGULATIONS
1. Warranty services ill be furnished only if the product is
accompanied by a copy of the original retail dealers invoice.
Any product deemed eligible for repair or replacement under the
terms of this arranty ill be repaired or replaced.
2. If the product needs to be modified or adapted in order to
comply ith applicable technical or safety standards on a national
or local level, in any country hich is not the country for hich
the product as originally developed and manufactured, this
modification/adaptation shall not be considered a defect in
materials or orkmanship. The arranty does not cover any
such modification/adaptation, irrespective of hether it as
carried out properly or not. Under the terms of this arranty,
BEHRINGER shall not be held responsible for any cost resulting
from such a modification/adaptation.
3. Free inspections and maintenance/repair ork are expressly
excluded from this arranty, in particular, if caused by improper
handling of the product by the user. This also applies to defects
caused by normal ear and tear, in particular, of faders,
crossfaders, potentiometers, keys/buttons, tubes, guitar strings,
illuminants and similar parts.
4. Damages/defects caused by the follo ing conditions are
not covered by this arranty:
simproper handling, neglect or failure to operate the unit in
compliance ith the instructions given in BEHRINGER user
or service manuals.
sconnection or operation of the unit in any ay that does not
comply ith the technical or safety regulations applicable in
the country here the product is used.
sdamages/defects caused by force majeure or any other
condition that is beyond the control of BEHRINGER.
5. Any repair or opening of the unit carried out by unauthorized
personnel (user included) ill void the arranty.
6. If an inspection of the product by BEHRINGER sho s that
the defect in question is not covered by the arranty, the
inspection costs are payable by the customer.
7. Products hich do not meet the terms of this arranty ill
be repaired exclusively at the buyers expense. BEHRINGER ill
inform the buyer of any such circumstance. If the buyer fails to
submit a ritten repair order ithin 6 eeks after notification,
BEHRINGER ill return the unit C.O.D. ith a separate invoice
for freight and packing. Such costs ill also be invoiced
separately hen the buyer has sent in a ritten repair order.
§ 6 WARRANTY TRANSFERABILITY
This arranty is extended exclusively to the original buyer
(customer of retail dealer) and is not transferable to anyone
ho may subsequently purchase this product. No other person
(retail dealer, etc.) shall be entitled to give any arranty promise
on behalf of BEHRINGER.
§ 7 CLAIM FOR DAMAGES
Failure of BEHRINGER to provide proper arranty service shall
not entitle the buyer to claim (consequential) damages. In no
event shall the liability of BEHRINGER exceed the invoiced value
of the product.
* Customers in the European Union please contact BEHRINGER
Germany Support for further details.