RDL AV-HK1X Datasheet

AV-PAK™ Series

Model AV-HK1X “Hum Killer”
Audio Isolation Module

ANYWHERE YOU NEED...

 Ground Isolation in Balanced Line
 Line-Level Ground-Loop Elimination
 Balanced Mono Galvanic Isolation
 Isolation in Rugged Field Case
 Portable or Permanent Isolation Module

You Need The AV-HK1X!

The AV-PAK Series is a versatile product group from Radio Design Labs. The heavy-duty metal
design allows the products to be used for both portable and fixed installations. These products feature
the dark RDL ULTRASTYLE™ color complement making the modules ideal for use on stage as well as
in an office or meeting room.

APPLICATION: The AV-HK1X is a mono transformer isolation module for use with a balanced, low
impedance source and either a low or high impedance load. Input and output connections are
provided on XLR jacks with gold-plated contacts.

The shield (pin 1) connection of the INPUT jack is electrically isolated from the case and from the
output ground (pin 1) at audio frequencies. The ground (pin 1) connection of the OUTPUT jack is
connected to the case shield. The user audio source, such as a mixer, preamplifier or other
professional audio product, connects to the AV-HK1X INPUT. The module OUTPUT should be
connected to the input of the grounded amplifier or mixer in the audio system.

Galvanic isolation between the input and output is provided by a studio quality audio transformer. The
AV-HK1X breaks the “ground loop” connection that can produce hum in a sound system. The input
connector shield does provide a radio frequency ground return, thereby preserving system immunity to
radio interference.

The AV-HK1X is a rugged product designed for portable use. For fixed installations, a mounting
bracket is included. Wherever mono ground isolation is required for a balanced audio input, the
AV-HK1X is the ideal choice. Use the AV-HK1X with other RDL modules and products to form a
complete audio/video system.

RDL  659 N. 6th St.  Prescott, AZ., USA 86301  [phone]  FAX [phone] www.rdlnet.com

AV-PAK™ Series

Installation/Operation

Model AV-HK1X “Hum Killer”
Audio Isolation Module

HUM KILLER

PROFESSIONAL LINE-LEVEL

AUDIO ISOLATION MODULE

AUDIO SOURCE

For permanent installation, fasten bracket to surface and snap module into position:

CONNECT BALANCED CABLES

TO INPUT AND OUTPUT

EN55103-1 E1-E5; EN55103-2 E1-E4

Typical Performance reflects product at publication time
exclusive of EMC data, if any, supplied with product.
Specifications are subject to change without notice.

TO OTHER

EQUIPMENT

TYPICAL PERFORMANCE:

Input: +4 dBu nominal
Output: +4 dBu nominal
Frequency Response: 20 Hz to 50 kHz (+/- 0.1 dB)
THD+N: <0.15% (20 Hz to 20 kHz; 150  source, 10 k load); 0.002% @ 1 kHz
Dimensions: Height: 1.75 in. 4.45 cm (unmounted)

Finish: RDL Dark ULTRASTYLE™ (dark gray with beige lettering)

U.S.A. [phone], [phone]; Fax: [phone]

891-4040

Europe [NH Amsterdam] (++31) 20-6238 983; Fax: (++31) 20-6225-287

Height: 1.95 in. 4.95 cm (mounted)

Width: 2.90 in. 7.37 cm
Length: 3.25 in. 8.26 cm

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