Hafler TRM6.1 manual XLR Balanced Input, INPUTFROM SOURCE Pin 1 = GND Pin 2 = + Pin 3 =, OmniMount

DETERMINING ACOUSTIC CENTER

Finding the “Acoustic Center” is accomplished by positioning the monitors so coherent arrival of the transducers occurs at ear level. The Acoustic Center is located 3 to 4 feet in front of the monitor, measuring perpendicularly from the center point of the cabinet (midway between the woofer and tweeter). Our tests have shown that a flat phase and frequency response occurs just above and below the Acoustic Center with the minimum and maximum height spanning between the tweeter dome and woofer dust cap.

INPUT SWITCH

The unbalanced input uses a conventional RCA phone jack. Move the input switch ON (-->) to use this jack. The balanced input jack is an XLR plug. The XLR jack is connected according to the IEC and AES standard. Move the input switch OFF (<--) to use this jack.

Unbalanced	Balanced
Input	Input
Move input	Move input
switch	switch
RIGHT	LEFT (<--)
(-->) to use	to use
RCA	XLR
connector	connector

Use good judgement and common sense throughout all phases of the installation and use mounting techniques appropriate for the sur- face you select. Use the mounting hardware according to the man- ufacturer's recommendation and provide adequate reinforcement to the monitors if needed. Do not mount the monitor only to drywall— make sure the fasteners are secured to a stud, joist, or other structural support. If appropriate, use a secondary support for added safety—a properly installed safety cable provides an extra margin of safety and can be installed out of sight easily.

MOUNTING

The monitor may be mounted on a wall or ceiling, using suitable mounting hardware. The base of the monitor includes mounting inserts designed for use with “OmniMount Systems®” or equivalent mounting products1.

If you mount the monitors to a wall or ceiling, you must take special care to mount them securely to prevent them from falling and caus- ing damage or injury. Make sure that the mounting hardware (fas- teners and connectors) and the surface you are mounting to are each capable of securely holding the monitor in place even if it is struck or moved. Make sure the mounting hardware, fasteners, and con- nectors are rated for an object at least as heavy and bulky as the monitor.

OmniMount Part #	OmniMount Part #
100 ST-MP / 100 STX-MP	100 WB / 100 WBX

1 “OmniMount Systems®” is a registered trademark of OmniMount

Systems, 1501 West 17th Street, Tempe, Arizona 85281-6255,

TEL (602) 829-8000 FAX (602) 756-9000.

OmniMount Systems is not affiliated with Hafler or Rockford Corporation.

XLR WIRING CONFIGURATIONS

Using the balanced XLR input is recommended for installations where long cable runs are used or when the potential for stray electromag- netic fields from other wires exists. There is a balanced and unbalanced method in which the XLR inputs can be used. The first method is an XLR Balanced Input using 3-conductor cable. The balanced signals carried on pins 2 and 3 are equal in amplitude and opposite in phase. Pin 1 is the ground and shield. In this configuration, noise common on both phases of signal are effectively "canceled" out. The second method is an XLR Unbalanced Input using 2-conductor cable with the signal carried in the center conductor and the ground carried on the shield. Many popular mixers use unbalanced outputs and can be used with the XLR balanced input. However, in this type of configuration we recommend using twisted pair cable or short cable length to prevent residual ground noise.

XLR Balanced Input

Check output from source for proper signal polarity

INPUTFROM

SOURCE

Pin 1 = GND

Pin 2 = (+)

Pin 3 = (–)

XLR Unbalanced Input

Connect (–) and GND (shield) terminals at both ends of cable to

prevent unstable amplifier operation

INPUTFROM

SOURCE

Pin 1 = GND

Pin 2 = (+)

Pin 3 = GND

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