User guide

Engineer 418 & 818 User Manual Page 16
Installation requirements
The Martin Audio Engineer 418 is designed for 19” rack-mount use.
Mount the Martin Audio Engineer 418 with racking screws in a 19” cabinet. Use support strips as necessary to
support the rear of the device.
Adequate ventilation and rear-support must be provided. Allow for enough ventilation into the 19” cabinet in
which the Martin Audio Engineer 418 is mounted. Observe the environmental specifications (see appendix 2)
at all times.
When mounting the Martin Audio Engineer 418 in a touring rack, a touring rack with shock-absorbing racking
strips should always be used.
Always install the Martin Audio Engineer 418 in a level plane. A maximum allowable angle of 10 degrees is
acceptable.
Do not use the Martin Audio Engineer 418 in a wet/damp environment.
Do not block any ventilation slot at any time and check the proper function of the fans at regular basis. If the
fans do not operate properly, the lifespan of the device will be significantly reduced and the device may
even fail.
Connecting Audio
Use only certified balanced & shielded audio signal cabling (e.g. Belden 8718, Tasker C208). Refer to the next
paragraph for maximum allowable conductor cross sections.
The connectors on the Martin Audio Engineer 418 accept 12-pin Phoenix terminal blocks (as supplied). Refer to
the next paragraph for instructions how to terminate the audio wiring.
From left-to-right are INTPUT 1-4 and OUTPUT 1-8. The connections are labeled: (please refer to rear panel
layout)
+ For audio hot
- For audio cold
For audio ground
Attention: Martin Audio strongly recommends the use of balanced audio connections only.