Specifications

Confidential Page 38
II. Testing Procedures
The following testing procedures should be applied for every installation:
♦ All speaker zones shall be tested for impedance with a Goldline ZM-1 or like model.
Note that all Volume Controls need to be set “wide open”. Insure that signal
frequency sent is within Speaker Tolerances, i.e.…..1K Hz to Subwoofer will not
work, should be 100 Hz. Impedance will be noted on IR.
♦ Line levels in rack shall be tested for proper phase using a Goldline Phase Checker or
like model.
♦ All Speakers in System shall be tested for phase using a Goldline Phase Checker or
like model.
All DMX Installations that have “Commissioning” included in the Equipment List,
Subcontract Agreement, or Scope of Work, will require that the following be performed
in addition to the above steps.
♦ Balance gain structure to +4 dBu as per DMX Requirements.
1. This level should be achieved after the source player.
2. Level should be consistent throughout entire system, up to the amplifier output.
Note: This measurement should be performed with a good quality voltmeter. The meter should be
rated for “True RMS”.
♦ EQ the system, as per DMX Requirements
1. Insert Goldline Pink Noise Generator, or like model, into signal path.
2. Set Amplifier Output to reflect 94 dB in room being measured.
Note: all VC’s should be wide open.
3. Measure room with Goldline Real Time Analyzer. Make adjustment to EQ
Faders so that all frequencies are relatively flat.
Note: Readings should be + or – 3 dB, they don’t have to be perfectly flat!
4. Remove Pink Noise Generator. Reinstall source/s and play customer’s content
over system, i.e. Profusion X, DBS Receiver, etc.
5. Listen for “Bad Sound”, too much bass, very bright, etc.
6. Make “Fine Adjustments” by ear.
7. Ask for customer input as to the sound of the room.
8. Repeat steps 1&2. Take final measurement of room and save settings on RTA.
9. Replace source and complete commissioning note section of IR.
DMX Reserves the right to inspect all installations