First And Second Fixing - Martin Audio CCD5 User Manual

CDD
USER GUIDE

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 scaf clamp may be used as an access hole for the
cable(s).
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.
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
IMPORTANT INFORMATION
IMPORTANT INFORMATION
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