background image

8

THRUST BQ250/BQ500

Quick Start Guide

9

THRUST BQ250/BQ500 Controls

THRUST BQ250/BQ500 Getting started

(1) 

INPUT

 You can connect an active or passive bass to this ¼" input jack. 

The input stage of your bass amp is designed to adapt to any type 
of pickup.

(2) 

GAIN switch

 Set the position of the GAIN switch according to the pickups 

in your bass. Active pickups typically have a higher output than passive 
pickups, and you should set the GAIN switch accordingly. If your bass uses 
batteries, the pickups are active – if not, the pickups are passive.

(3) 

GAIN knob and PEAK LED

 The input gain should be set to the highest 

possible level without overloading the input stage. To fi nd the correct 
setting, simply plug in your bass, play and turn up the GAIN knob until the 
PEAK LED occasionally lights up. Then reduce the gain slightly. When set, 
simply turn up the MASTER volume knob to start playing.

(4) 

THRUST

 

switch

 Set the THRUST switch to the upper position to activate 

the THRUST compression.

(5) 

THRESH LED

 The THRESH LED will light up whenever your bass signal 

exceeds the compression threshold and activates the THRUST compression.

(6) 

THRUST knob

 Turn the THRUST knob clockwise to add fatness and 

sustain with the THRUST compression eff ect.

(7) 

TONE Controls

 The BQ250/BQ500 has four tone controls: BASS, LO-MID, 

HI-MID and TREBLE. These controls have been tuned carefully to address 
four relevant bass frequency areas, and should allow you to dial in your 
sound with ease.

(8) 

MASTER level knob

 Use the MASTER knob to set the overall output level 

of the amp. The MASTER knob also controls the level of the 
headphone output.

(9) 

MAINS IN – Power switch & Power input

 The switched-mode power 

supply of this device accepts voltages from 100V to 240V. The ground pin of 
the power supply unit must always be connected in order to avoid voltage 
diff erences between e.g. the PA and the BQ250/BQ500.

(10) 

SPEAKER OUT

 Use the SPEAKER OUT connector for connecting 

BQ250/BQ500 to speaker cabinets. Please note that this is a speakON 
connector, and you must use speaker cables. 

Do not use instrument cables!

For BQ250/BQ500, use a cabinet confi guration with 
a minimum load of 4 Ohms. Examples:

•  2 x 8 Ohm (in parallel)

•  1 x 4 Ohm

(11) 

AUX IN

 The AUX IN is a stereo auxiliary input. Any signal present on the 

AUX IN jack is played back through all BQ250/BQ500 outputs. This allows 
you to play along with a rehearsal track, or you can practice to the beat of 
a metronome click. The included “mini jack to mini jack cable” allows you 
to use an iPod®, iPhone® or any other consumer playback device as a source 
for rehearsing.

(12) 

PHONES (Speaker Mute)

 The PHONES jack is a 1⁄8" connector for 

headphones. With a mild speaker fi lter applied to the bass sound, our 
studio quality headphone amp caters for a great headphone sound. 
The headphone output also plays back any signal connected to the 
AUX IN input jack. This feature allows you to play along with an audio 
player, a signal from a computer or any other audio source playing 
background tracks.

(13) 

PRE/POST EQ button

 Use the PRE/POST button located to the left side of 

the BALANCED OUT jack to determine where in the signal chain the signal 
for the balanced output should be tapped.

•  PRE setting: The signal is tapped before the EQ.

•  POST setting: The signal is tapped after EQ.

(14) 

BALANCED OUTPUT

 Use the BALANCED OUT XLR jack to connect the 

BQ250/BQ500 to the PA when you play on stage, or to connect your amp to 
a recording device when you are in the studio.

Protection mode

This product is equipped with an advanced protection system for both the amplifi er’s and your own safety. These protection features should only kick in if you operate 
this product under extreme conditions.

Be sure not to cover the BQ250/BQ500 cooling grid!

 Insuffi  cient ventilation may cause the amplifi er’s temperature to increase to critical values.

The BQ250/BQ500 is equipped with an intelligent protection system, ensuring that the amp does not suff er or malfunction if operated wrongly or in extreme 
environments. When the amplifi er switches to protection mode, the speaker output is muted.

Protection mode is invoked…

•  if a short circuit occurs (on speaker outputs).

•  if the amplifi er is used in an environment that is too hot.

•  if proper ventilation is not ensured.

•  if the combined impedance of the internal speaker and an attached speaker is below 4 Ohms.

In Protection mode, the speaker outputs are shut off  to prevent speaker damage. However, the balanced output still passes audio.

How to proceed in Protection mode

1.  If the amplifi er does not automatically recover from Protection mode and feels hot, try turning off  the amplifi er for a minute to let it cool. 

Ensure suffi  cient ventilation.

2. Ensure that your speaker cable is not defective, as such a defect could cause a short circuit.

3.  Turn on the amplifi er again. If these steps do not solve the problem you will have to send the amplifi er to 

a qualifi ed service center for inspection.

(1)

(3)

(4) (5) (6)

(7)

(8)

(2)

(9)

()

()

()

()

()

Summary of Contents for THRUST BQ250

Page 1: ...Quick Start Guide THRUST BQ250 BQ500 250 500 Watt Portable Bass Head with Mosfet Preamp and Thrust Compressor...

Page 2: ...es TSde6 3mmodebayonetaprefijados Cualquierotra instalaci nomodificaci ndebeserrealizada nicamente porunt cnicocualificado Estes mbolo siemprequeaparece leadviertedelapresenciadevoltaje peligrososinai...

Page 3: ...LAUDIO et EUROCOM sont des marques ou marques d pos es de MUSIC Group IP Ltd MUSIC Group IP Ltd 2017Tous droits r serv s Pourconna trelestermesetconditionsdegarantie applicables ainsiquelesinformation...

Page 4: ...paradesligaraunidadede funcionamento estadeveestarsempreacess vel 13 Utilizeapenasliga es acess riosespecificados pelofabricante 14 Utilizeapenascom ocarrinho estrutura trip suporte oumesa especificad...

Page 5: ...rsal track or you can practice to the beat of a metronome click The included mini jack to mini jack cable allows you to use an iPod iPhone or any other consumer playback device as a source for rehears...

Page 6: ...un metr nomo El cable mini jack a mini jack incluido le permite usar un iPod iPhone u otro dispositivo de reproducci n de sonido no profesional como fuente para los ensayos 12 PHONES anulaci n de alta...

Page 7: ...travaillez de nouveaux morceaux ou avec un click de m tronome Le c ble fourni mini jack vers mini Jack vous permet d utiliser votre iPod iPhone ou tout autre appareil de playback grand public comme so...

Page 8: ...er einen beliebigen anderen Audioplayer als Signalquelle anschlie en 12 PHONES Speaker Mute Die PHONES Buchse ist eine Miniklinkenbuchse zum Anschluss eines Kopfh rers Der integrierte Kopfh rerverst r...

Page 9: ...do metr nomo O cabo incluso mini jack to mini jack possibilita o uso de um iPod iPhone ou qualquer outro dispositivo de reprodu o de consumidor como fonte a ser usada durante ensaios 12 PHONES Mute de...

Page 10: ...ageforyourparticularmodel Faultyfusesmustbereplacedwithfusesofthesametype andratingwithoutexception Important information Technical Specifications BQ250 BQ500 Audio Inputs Instrument input TS unbalanc...

Page 11: ...that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off a...

Page 12: ......

Reviews: