First And Second Fixing - Martin Audio CDD Series User Manual

CDD

FIRST AND SECOND FIXING

Construction industry practice frequently favours "first" and "second" fixing stages. This system gives installers the advantage of
being able to pull cables and make primary fixings at an earlier stage of building completion and avoids the potential problems
of leaving expensive and delicate audio equipment in-situ while building and decoration work is still on-going.
All CDD Series mounting brackets – wall, ceiling and yokes – disassemble into separate "first fix" and "second fix" components.
This means that part of the bracket may be secured to the wall or ceiling at first fix, without the necessity of having the cabinet
on site. The rest of the bracket can then be fitted to the cabinet at floor level at second fix, and then the two parts of the bracket
easily mated.
The two fixing stages may be summarised as follows:
• First stage fixing – Fix "first fix" sections of wall or ceiling brackets at desired locations. Run speaker cables to speaker
locations, using cable access holes provided in brackets. If using yoke assemblies for a fixed installation, fit the main
yoke in position; in this case the large diameter centre hole provided for a scaffold clamp may be used as an access hole
for the cable(s).
IMPORTANT INFORMATION
Consult a qualified structural engineer with a full knowledge of the building, its load ratings and your intended loudspeaker
installation plans before commencing any installation. The type and size of fixings used must take into account both the weight
of the enclosure and the construction of the wall or ceiling.
• Second stage fixing – Attach "second fix" sections of brackets to rear of cabinets. For yoke assemblies, fit strap bars to
cabinet. Raise cabinets to height and mate with first fix bracket sections. Connect up in all cases. Adjust pan and/or tilt
as required.
IMPORTANT INFORMATION
In some cases, local regulations may require a safety bond (e.g., wire or chain) to form part of the final fix. The complete
installation should be checked and approved by a qualified structural engineer and a qualified electrical safety consultant before
being signed off.
CDD User Guide V1.0
USER GUIDE
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