The NT1 clamping system is designed for towers
and support structures that utilize ROUND tubing.
Oval tubing and fl at structures will not work with
this clamp. The NT1 clamp can be used with tube
diameters from 1.5” up to 2.75”. Included are
separate bushing sets for all tube sizes at 1/8”
increments. Refer to the table below to determine
your confi guration.
Choose a suitable
mounting location
Mounting Location
Dimensions
CAUTION
Always consider consulting a professional audio installer
before installing new speakers. Many manufacturers locate
speakers behind interior panels that require special tools to
remove. Be careful and take your time.
If you are using the speaker wire supplied with your new
speakers make sure that you run the speaker wires only
through safe areas. Do not let speaker wire make contact with
metal edges or hot engine components.
Congratulations on your choice of a MBQuart Subwoofer.
This “Quick Start” Installation guide is meant to help
you complete a basic installation. For more detailed
information on system setting, speaker and subwoofer
confi guration, and full specifi cations by model, visit our
website at mbquart.com
It’s a good idea to confi rm that you have purchased the
correct size speakers to fi t your application. If you have any
reservations about being able to complete the installation
yourself, we recommend contacting a professional.
Before you start
Carefully select a route for the audio signal
wires. If using existing speaker wires, confi rm
that the wire is in good shape and not
shorted. In the case of an illuminated model,
route a positive and negative wire from a
switched +12V source. Avoid routing wires
through dangerous areas.
Route signal and
illumination wires
Wiring
230mm
9.04”
104mm
4.08”
44mm
1.73”
274mm
10.78”
215mm
8.47”
Tube
Diameter
Tube
Circumference
Clamp Top
Bushing
Bottom
Bushing
1.5 4.71 A 1.50 1.50
1.625 5.10 A 1.63 1.63
1.75 5.50 A 1.75 1.75
1.875 5.89 A none 1.88
2 6.28 B 2.00 2.00
2.125 6.68 B 2.13 2.13
2.25 7.07 B 2.25 2.25
2.375 7.46 B 2.38 2.38
2.5 7.85 B 2.50 2.50
2.625 8.25 B 2.68 2.68
2.75 8.64 B none none
Black ...................................... Audio signal negative
Black w/white stripe ................ Audio signal positive
Black ....................................... Illumination negative
Red ......................................... Illumination positive