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Thank you for purchasing an Audiovector Subwoofer.Your new 
subwoofer has been designed to provide years of listening pleasure, 
reliability and pride of ownership.

1. UNPACKING 

Care must be taken at all times when handling the subwoofer due 
to the weight and the construction of the product. To remove the 
subwoofer from its carton, place some protective material on the floor 
and having removed any loose items from the top of the packaging, 
carefully invert the carton. Gradually pull the carton upwards to expose 
the subwoofer.

2. CONNECTIONS

The QR Sub is active and therefore only needs to be connected to 
the “

sub-output”

 alternatively the 

“pre-output”

 – on the back of your 

surround processor/amplifier/receiver.
Alternatively, the QR Sub can be connected directly to the speaker 
output terminals of the amplifier via its Hi-Level input and the Speakon 
connector*, or directly to the input terminals on your speakers.
When connecting it via its phono inputs, please use both inputs – left 
& right. If your surround processor does not have stereo outputs, 
use a Y-split. This way you are able to connect to both inputs and the 
sound level will increase SPL 3 dB compared to performance when 
only using one input. 

Never connect or disconnect input or output leads with 
the subwoofer switched on.

3. VOLUME FOR SURROUND SOUND

First adjust the volume control (either HI/LOW Level from speaker outputs 
or 0.1 LFE Level from phono output) to the 12 o’clock position. This 
way you are sure to have sufficient low frequency response for the rest 
of the set-up. Later, please adjust the sub-level via the bass management 
system in your surround processor.

4. FREQUENCY FOR STEREO

The frequency response control should be set to the frequency from 
where you want the QR Sub to support your front speakers. I.e if the 
frequency is set to 50 Hz, the QR Sub will only respond to frequencies 
below 50 Hz.

5. VOLUME FOR STEREO

Adjust the chosen volume control (either HI/LOW Level from speaker 
outputs or 0.1 LFE Level from phono output) to a level where you can 

easily hear the subwoofer. Then perform the phase test below. After 
this readjust the level.
 

6. PHASE

All rooms respond differently to sound equipment. Especially the low 
frequency area is difficult as you need the subwoofer to play with – 
and not against – your front speakers. The phase should be adjusted 
with the help of a friend. With one person positioned away from the 
subwoofer the other person operating the +/- of the phase control. 
At the position where the subwoofer adds the loudest sound pressure 
level, the phase control is in the right position.   

7. POWER

Leave the subwoofer unplugged from the mains until 
the installation procedure is completed.

The power on your subwoofer can be automatically turned on when 
it senses a signal. Set your power switch to the AUTO position. This 
is the easiest way to use your sub. If you want your subwoofer to be 
turned on all the time, set the switch to ON. If you do not want your 
subwoofer to be turned on, set the switch to off.  

PS:  To reset the software of the amp, pull the AC plug
    for 30 seconds and power up again.   

8. MAINTENANCE/SERVICE

If you want to clean your speakers, please use a damp soft piece of 
cotton. Do not use solvents. In order to maintain your excellent sound 
quality, please pull out the plugs from the speaker cable every 3 months 
and clean them with a piece of soft cotton with a little alcohol
(or something alike). 

9. WARRANTY 

Audiovector subwoofers are subject to a 2 year warranty - transportation 
cost is not included. Please note that unauthorized opening or repair of 
your speakers, puts your warranty out of function. We wish you many 
hours of enjoyment with your new Audiovector speakers. 

Please direct all warranty and/or service issues to 
AUDIOVECTOR
Orient Plads 1
DK-2150 Nordhavn, Denmark.
Tel +45 35396060
[email protected]

AUDIOVECTOR QR SUB

INSTRUCTION MANUAL

Yours sincerely 

Mads Klifoth 

CEO 

www.audiovector.com

Handmade in Denmark since 1979

All manuals and user guides at all-guides.com

all-guides.com

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