FLX-E Operations Manual Rev F
Page 6
Table of Contents
Top
5
Welcome
Congratulations on the purchase of your new Stewart Audio FLX-E Series audio amplifier. This amplifier has
been designed and built to provide you with years of high-quality audio performance and trouble-free
operation. If after reading this operation manual you have questions concerning amplifier installation and
operation, please contact your Authorized Stewart dealer, or you may contact us directly using the contact
information provided on the back of this guide.
5.1
Features
The FLX-E Series amplifiers offer 320W of audio in a half-rack by 1RU, convection-cooled enclosure. The
FLX-E-80-4 models provide 80W/channel with 4 local outputs. The FLX-E-160-2 models provide
160W/channel with 2 local outputs. The FLX-E-320 models offer 320W into a single local output. All FLX-E
Series amplifiers have built-in DSP for fine tuning your listening environment. (See
information.) Models with a “D” suffix use the Dante™ and AES67 audio transport protocols to deliver low
latency audio over category 5e/6 cables via a 100/1000BaseT network. The low impedance models (“LZ”
suffix) operate into 4Ω or 8Ω loudspeakers, while the constant voltage or high impedance model (“CV”
suffix) are designed to be used with one or more high impedance loudspeakers per channel.All models offer
control and status via the Ethernet control port using Stewart Audio’s FLX-E application. Output level
control is also available over an RS-232 interface for legacy controllers or over the network for IP-based
controllers.
5.2
Unpacking and Visual Inspection
Every Stewart Audio product is carefully tested and inspected before leaving the factory and should arrive
in perfect condition. If any damage is discovered, please notify the shipping carrier immediately. Save the
packing materials for the carrier’s inspection and for any future shipping.
5.3
Installation and Setup
5.3.1
Rack Mounting
The FLX-E Series of amplifiers is designed for rack mounting in a standard 19” rack using the optional rack
mount brackets. Both single (part number RMK-HLF-S) and side-by-side (part number RMK-HLF-D) rack
mounts kits are available from your Stewart Audio authorized dealer.The constant voltage (“CV” suffix)
models use autotransformers to step-up the voltage to 70/100V. These transformers add significant weight
to the amplifier. I
t is strongly advised that the rear of the enclosure be supported when rack-mounted.
The dual rack mount is designed for easy installation. Refer to the figure on the following page while
completing this step-by-step procedure.
Step 1:
Note the position of the captive nuts on the inner brackets. One set must be near the front of one
amplifier and the other set near the rear of the other amplifier.
Step 2:
Attach the right-angle brackets to the front of each amplifier and the rear brackets (if desired) to
the rear of each amplifier. A rear support is recommended for the constant voltage (“CV” suffix) models.
Step 3:
Attach the inner brackets to each amplifier
as oriented in step 1
. Insert and tighten two screws
into the front of each inner bracket and two screws into the rear of each inner bracket.
Step 4:
Bring the two subassemblies together, overlapping the flanges on the inner brackets. Both pairs of
captive nuts should be inside the flange of the opposing bracket. Complete the assembly by inserting two
screws into the front of the pair on inner brackets and two screws into the rear pair of the inner brackets.
