DESIGNED BY MUSICIANS FOR MUSICIANS
CAUTION! It is necessary to comply with basic rules while using devices
supplied from AC power.
The device should be supplied with current of parameters complied with
markings on the product.
It is recommended to use plugs with grounding.
The amplifier should be place in a spot that anables free air circulation for
the cooling system to work properly.
Use fuses of parameters recommended by the producer only.
It is necessary to remember that too loud play may cause hearing
damages.
Protect the device against moisture.
A perfusion ofthe device may cause damage or electric shock.
The device should be used away from a heat sources.
Never try torepair the device personally.
PRECAUTIONS
Disposal of old Electrical & Electronic Equipment (Applicable throughout the
European Union and other European countries with separate collection programs)
This symbol,found on yourproduct or onits packaging, indicatesthat this productshould not betreated
as household waste when you wish todispose of it. Instead, it should be handed overto an applicable
collection point for the recycling of electrical and electronic equipment. By ensuring this product is
disposed of correctly, you will help prevent potential negative consequences to the environment and
human health,which could otherwisebe caused byinappropriate disposal ofthis product. Therecycling
of materialswill help to conservenatural resources. Formore detailed informationabout the recycling of
this product, please contact your local city office, household waste disposal service or the retail store
where youpurchased thisproduct.
Box Electronics
ul Cieszynskiego 4
81-881 Sopot
Poland
tel +48 58 550 66 46
tel/fax +48 58 551 90 05
e-mail info@taurus-amp.pl
www.taurus-amp.pl
RoHS
Taurus
Bass guitar
amplifier
OPERATING MANUAL
Taurus T-450
The T−450 HEAD
The T−450
is the youngest member of Taurus analog bass head
amps family, powered by outstandingly efficient Switching Mode Power
Supply. The SMPS ensures great dynamic and high power outputas well
as light weight andoverallcompactamps size.
is dedicated to those who are looking for very easy to tune
and control, reliable and efficient bass head with very wide dynamic
range and selectivity, which reproduce exact sound characteristic of
plugged instrument. As a whole Taurus line of amplifiers, the −450 is
equipped with unique MLO−System which greatly benefit musicians by
logical and effective toneadjustment.
T
− 1 −
− 6 −
MLO − SYSTEM Middle−range Level Optimization
7
MLO−system equalization control is conceived to achieve easy and
intuitive tailored sound using only bass and treble knobs. This sound
correction simplifies finding the proper tone colour. Tone setting
characteristics are designed to meet the parameters of the
instruments, both technicallyand musically.
In regular EQ practically 50% of the bass and treble correction
range is used. Adding more low frequencies will result in loss of
sound control. Automatic paired mid−range equalization control
offers two point correction and optimal middle range frequency
tone adjustment, especially in adjacent mid and low spans.
The MLO− equalizer maintains volume level while low frequencies are
added to the original sound, changing only the tone, not its volume.
(No need for volume correction level).
The musician can simply focus on sound control without knob
confusion.
PARAMETRIC EQUALIZER
PARAMETRIC EQUALIZER is composed of 2 controllers − LEVEL and FREQUENCY. LEVEL
controller is designed formidtonesadjusting, FREQUENCY controller adjustsappropriate
mid tonesrange.LEVELcontroller decides whether we want to amplify orcut out selected
tone range. Setting LEVEL controller in middle position will cause that the EQUALIZER
does notmakeany changes.
The operation is illustrated below.
Available tone color adjustment rangeis set between120Hz
and 4kHz. EQUALIZER
MIDDLE TONE LEVEL
NEUTRAL POSITION − EQUALIZER DOES NOT MAKE ANY CHANGES
MIDDLE TONE COLOR
MIDDLE TONE LEVEL ADJUSTED
IN MIDDLE POSITION
MIDDLE TONE COLOR IS NOT ACTIVE
SWITCHED ON
INDICATOR IS ON
MIDDLE TONE LEVEL ADJUSTED ON “+2” FREQUENCY ADJUSTED ON “1.2kHz”
SWITCHED ON
EQUALIZER BOOSTS 1.2 kHz TONE RANGE
MIDDLE TONE LEVEL ADJUSTED ON “−2” FREQUENCY ADJUSTED ON “1.2kHz”
SWITCHED ON
INDICATOR IS ON
INDICATOR IS ON
EQUALIZER CUTS OUT RANGE1.2 kHz TONE
EQ
1.2k
2.0k
200
4.0k
600
120
3.0k
11
2
3
4
2
3
4
Hz
MIDDLE FREQ
EQ
1.2k
2.0k
200
4.0k
600
120
3.0k
11
2
3
4
2
3
4
Hz
MIDDLE FREQ
EQ
1.2k
2.0k
200
4.0k
600
120
3.0k
11
2
3
4
2
3
4
Hz
MIDDLE FREQ
EQ
1.2k
2.0k
200
4.0k
600
120
3.0k
11
2
3
4
2
3
4
Hz
MIDDLE FREQ
− 2 −− 5 −
1
SPECIFICATIONS
Power output:
Inputs:
Controls:
GAIN
VOLUME
Tone:
BASS TREBLE
BASS−switch
DBS−cut/OFF/DBS−boost
TREBLE−switch
CUT/OFF/PRESENCE
PARAMETRIC EQUALIZER
PUNCH
Other features:
MUTE
CLIP
PEAK
Effect loops: SEND / RETURN (
Outputs: LINE PRE/POST
GROUND LIFT TUNER SPEAKERS
Protections:
Casing dimensions:
Overall dimensions:
Weight:
450W RMS / 4ohm
300W RMS / 8ohm
passive & active
− control with overload indicator.
control
and equalizer with .
Triple to reduce or boost low frequency:
Triple to reduce or boost high frequency:
for precise control of middle range:
120Hz−4kHz
button − increases sonic expression
button
power amp indicator
preamp overload indicator
XLR balanced output with switch and
circuit switch, ,
[combo speakon/jack]
short circuit, thermal overload, power overload
Forced cooling system with electronic efficiency control
[H x W x D] 66x380x180mm
[H x W x D] 66x380x205mm
3.3 kg
"MLO−system"
jack 1/4 inch)
Set VOLUME controllerin optimum and then set appropriate input sensitivity byusing
GAIN controller. GAIN controller should be set in a way that ensures to control the
amplifier on required level. It is necessary to remember not to allow to overload the
preamplifier while hard hitting the strings. The overload is indicated with OVERLOAD
indicator [3].
Begin with setting BASS and TREBLE controllers. If you need more bass tone
saturation, use the DBS switch. If you need to brighten the instrument color, use the
TREBLE switch.
Creating of advanced tone color is possible thanks to PARAMETRIC EQUALIZER. One
can switch on the EQUALIZER using button [7]. Using EQUALIZER you can precisely
adjust mid tones color. PARAMETRIC EQUALIZER is composed of 2 controllers −
MIDDLE and FREQUENCY. Operating with these 2 controllers, you can select proper
tone color range you wantto amplify or cutout. Availabletone color adjustment range
is set between 120Hz and 4kHz. It corresponds with range up to bass sounds
throughout whole mid band up to high tones. The EQUALIZER operation is described
in point 7 oftheoperation manual.
In order to enrich the instrument sound you are allowed to use additional sound
effects. Theeffect loop ontheback panel with SENDandRETURN are meantfor that.
A
C
D
B
SOUND CREATION
Connect the speaker cabinets which have an appropriate power and impedance
to the amplifier.
Select HORN on/off switch on the combo back panel as you wish.
Set every front panel controllers and switches on following positions:
− BASS, controllers in middle position,
− PRESENCE, PARAMETRIC EQUALIZER ON and DBS
Connect your bass guitar to amplifier INPUT, then switch on POWER button.
GAIN, TREBLE, LEVEL and VOLUME
switches in “OFF” position.
GETTING STARTED
5
6
Basic elements that makeup the character of desired sound are tone color and
dynamics. Section composed of controllers BASS, TREBLE, PARAMETRIC
EQUALIZER as well as switches DBS and TREBLE is responsible for tone color.
Firstly set tone color using only BASS and TREBLE controllers and DBS and
TREBLE switches. In case when the adjustment is insufficient, use
PARAMETRICEQUALIZER.
FIRST USING TIPS
A
B
C
D
FRONT PANEL
OPIS EQUALIZERA PARAMETRYCZNEGO
PROTECTIONS
− 3 − − 4 −
3
4
2
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
− Active
− P
− PEAK indicator in preamp section.
−
− GAIN control
−
− Triple BASS switch to reduce or boost low frequency:
DBS−cut/OFF/DBS−boost.
− .
− .
−
− frequency adjustment [120Hz...4kHz].
− TREBLE
− Triple TREBLE switch to reduce or boost high frequency:
CUT/OFF/PRESENCE.
− VOLUME control.
− MUTE on/off switch
− PROTECTION indicator
− Power amplifier CLIP indicator
− ON/MUTE indicator
− POWER on/off switch.
bass instrument INPUT
assive bass instrument INPUT
PUNCH button − increases sonic expression.
BASS control with MLO−system.
PARAMETRIC EQ on/off switch
PARAMETRIC EQ indicator
PARAMETRIC EQ level control.
PARAMETRIC EQ
CONTROL with MLO−system.
.
.
.
.
[JACK 6.3mm].
[JACK 6.3mm].
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
−
− SPEAKERS output
− AUX SEND output
− AUX RETURN input
− TUNER OUTPUT
− Balanced LINE OUTPUT
− LINE OUTPUT PRE/POST EQ switch.
− LINE OUTPUT GROUND LIFT switch.
[combo SPEAKON and 6,3mm
6,3mm
6,3mm
6,3mm
[XLR]
EC POWER INPUT socket with AC fuse.
.
.
.
.
.
JACK]
[ JACK]
[ JACK]
[ JACK]
The amplifier is equipped with automatic power amplifier protecting
systems. Activating the protection is noticed with PROT indicator
located on the front panel of the amplifier. In case when the indicator is
on permanently, then the loudspeakers are going to be disconnected.
Inactivating of protection systems should be performed by turning off
and on the amplifier. If the amplifier doesnot return to normal action, it
means that the anti−overload or anti−short circuit system has been
activated. In such case it is necessary to check loudspeakers
impedance (it may be too low) and amplifier−loudspeakers connection
(there may be short circuit). If the PROT indicator is still on, check the
amplifier temperature (it may be too high). In this case just wait few
minutes to amplifier cooling.
REAR PANEL
MAIN S
450W/4ohm
300W/8ohm
SPEAKER S
230V120V100V
6,3A
3,15A
Fuse
Made in Poland
LINE
OUT
PRE GND
LIFTPOST
SEND
RETURN
TUNER
OUT
EFFECT
Bass Amplifier
54
3
2
1
6
7
8
EQ
54
3
2
1
6
7
8
11
2
3
4
2
3
4
11
2
3
4
2
3
4
1.2k
2.0k
200
4.0k
600
120
3.0k
11
2
3
4
2
3
4
Hz
PROT
MUTE
ON
CLIP
True
VOLUME
GAIN
BASS TREBLEMIDDLE FREQ
T-450
DBS
PunchPeak
Bass Amplifier
SYSTEM
MLO
5 6 10 11 12 14 10
1916 17
1 2
3 7
4
98 13 15
18
2
3 4 5 6 7 8
1
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