Hello, I'm James Technical Sales Engineer at Ampetronic.
I'd like to introduce you to the MLD 9 which is part of our industry benchmark MultiLoop
Driver range. The MultiLoop drivers are the most efficient
and high performance loop amplifiers available on the market.
Each driver has two outputs channels that drive separate loop cables and features a
90 degree phase shift between channels to facilitate multiLoop designs
which can be used to combat metal loss, control overspill and provide coverage of very large
areas. They also feature class leading fan assisted
thermal management that means it is not necessary to leave spaces between units to prevent overheating.
Each unit is remarkably compact, requiring only a single standard 19" rack space per
MLD unit. These two features combined offer a 50-90%
reduction in rack space requirement when compared with any other solution, and importantly the
same reduction in the associated costs. The MLD 9 features a distinctive and robust
rack or wall mountable chassis which when combined with advanced thermal management
and use of proven Ampetronic technology provides a truly reliable solution.
As you can see the unit has a conventional on off switch
Input gain controls, which, as for all front panel controls are screwdriver adjusted to
discourage tampering. AGC LED indicators to show that the unit's
compressor is engaged. Next we have the Metal Loss Compensation control,
which is used as part of the commissioning procedure to compensate for slopes in the
system frequency response. An output current control and LED indicator
group for each channel consisting of a six segment current output meter together with
warning lights for clipping and loop resistance error.
A temperature LED which will illuminate in the unlikely event of the unit overheating.
And a 3.5mm jack socket for headphones to allow users to monitor the audio signal leaving
the amplifier. The power light on all MLD units is a feature
unique to Ampetronic illuminating in the form of the internationally recognised induction
loop symbol to differentiate it from other rack equipment.
The light also flashes during start-up to indicate that self-test mode is in operation.
Finally we have the front air intake and filter. On the rear of the unit we have an IEC 320
power connector with integral fuseholder. Next to this we have two XLR inputs, each
with switchable mic/line level operation plus selectable 15 Volt phantom power and 15dB
gain boost. Two 6.3mm (or ¼") jack sockets provide slave
in and out insert points to enable linking of multiple units for high power systems.
The output phase switch enables the 90 degree phase shift between output channels to be
bypassed. The DC output connection can be used to power
ancillary units such as pre-amps and loop monitors.
There are two air exhausts from the twin variable speed fans that assist with thermal management.
Two industry standard high current Neutrik Speakon connectors provide the loop outputs.
These allow secure connection of twisted pair or quad core feed cables and easy disconnection
for maintenance. A status connector provides remote fault indication
triggered by loop and temperature errors. And finally the serial number for warranty
registration purposes. In the box you will find The Multiloop Driver
the installation handbook an A4 loop sign rack mounting brackets 2 speakon loop output
connectors DC output and status connectors and the power cable.
For more specific performance related information please see the datasheets or website product
pages. Thank you for listening.