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FM-55 / Aug 2014
G E N E R A L I N F O R M A T I O N
AM-55 Feature Overview
The AM-55 Audio Processor has been designed to process audio for conventional
analog AM.
Input audio can be analog or digital, with options on the digital input via WheatNet-IP
or standard AES-3 connection. And input failover between the digital or analog inputs is
available.
Processing blocks include a phase rotator and high pass filter, a four band equalizer,
five band iAGC processor and a five band limiter.
The final stage of the signal path utilizes a new clipper technology unique to the AM‑55.
Several dozen factory presets are provided with the AM‑55, making a very wide
range of on air sounds and textures available to the user right out of the box. When used
in combination with the front panel’s Audio Processing controls each factory preset offers
over a million different on‑air sounds to the user.
The AM‑55 is also equipped with Wheatstone’s ACI protocol, allowing complete control
of not only presets, but any parameter that is assigned to a user control (please contact the
factory for details on using this feature).
Rack Mounting
The AM‑55 is designed to fit into an industry standard 19" equipment rack, and requires
one rack unit (1.75") of vertical space. The unit has a depth of 9" behind the rack rails (in
-
cluding chassis connectors), and its chassis has a width of 17‑11/32". Space needed in front
of rack rails is 3/4" and an additional five inches of space is required for wiring cables to
pass through. If using only two rack screws always use the bottom two screws to prevent
twisting of the front panel and other undue forces from harming the processor chassis.
The AM‑55 may be mounted between other devices in the equipment rack; however, in
accordance with good engineering practice it should not be mounted directly above devices
that generate a significant amount of heat (such as power amplifiers or power supplies). If
such a location is unavoidable, then it is advisable to utilize an extra 1RU blank rack panel
between the AM‑55 and devices imm ediately above and/or below it.
WARNING!
With very few exceptions, the AM-55 chassis DOES NOT need to be opened in the
field.
Please be advised that the AM‑55 contains high voltage power supply circuits
operating at voltages well above AC line input.
These voltages are hazardous and potentially deadly if accidentally contacted.
Special tools, software, and fixtures are required for service. There are no
user‑serviceable parts inside.
The AM‑55 unit must be returned to Wheatstone Corporation under a Return
Authorization in the unlikely event that repair is necessary.
If you need to return the AM‑55 to Wheatstone for repair, please contact our
office at 252-638-7000 Monday – Friday 8:30am to 5:30pm ET or after hours at
[email protected] for a Return Authorization (RA) number.
