Quick Start Guide

The NPT1 clamping system is designed for
towers and support structures that utilize ROUND
tubing. Oval tubing and at structures will not
work with this clamp. The NPT1 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 con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 MB Quart speaker.
This “Quick Start” Installation guide is meant to help
you complete a basic installation. For more detailed
information on system setting, speaker and subwoofer
conguration, and full specications by model, visit our
website at mbquart.com
It’s a good idea to conrm that you have purchased the correct size speakers to
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, conrm
that the wire is in good shape and not
shorted.
Route signal wires
Wiring
230mm
9.04”
104mm
4.08”
44mm
1.73”
44mm
1.73”
274mm
10.78”
215mm
8.47”
193.2mm
7.61”
97.1mm
3.82”
174.5mm
6.87”
201.5mm
7.94”
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