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XL48 microphone Pre-amplifier
1. Introduction
welcome!
Thank you for purchasing an XL48 Microphone Pre-amplifier (Mic Pre-amp).
The XL48 is a premium quality, 8-channel Midas microphone pre-amplifier with
high quality driven analogue outputs and multiple digital outputs (two ADAT and
two AES3) occupying 1U of rack space. It uses an enhanced version of the Midas
XL4 mic pre-amp for the analogue front end, coupled with the XL4's low and high
pass filter circuitry. This, together with the A/D converter technology from the
Midas XL8, provide a classleading microphone pre-amplifier solution.
The XL48 was conceived by Midas to offer audio professionals high performance
audio equipment, designed to provide no-compromise sonic quality with a
feature set that offers all essential facilities and functions. It represents the
very best of British design and engineering combined with contemporary,
efficient manufacturing methods, and will give you many years of
reliable service.
So, to obtain the best results with a minimum of effort, please read this operator
manual and, finally, enjoy your Midas XL48 Microphone Pre-amplifier!
1.1 key features
The XL48 has the following key features:
•
Mic pre-amps Eight premium Midas mic preamps (based on the classic
Midas XL4 design, but with improvements).
•
Analogue and digital The XL48 combines both analogue and
digital technologies.
•
Filters Low and high pass filters (based on the classic Midas XL4 design).
Meters Eight-segment LED meters.
•
A/D converters High quality A/D converters (as used on the Midas XL8
•
Live Performance System).
•
Inputs Eight balanced XLR inputs plus eight 'parallel' balanced inputs on a
25way, Dtype connector.
•
Analogue outputs Eight balanced high quality driven analogue outputs on
a 25way, Dtype connector.
•
AES3 outputs Two sets of eight AES3 outputs on a 25way, Dtype connector.
ADAT Two sets of eight-channel ADAT output connections.
•
Configuration Switch for setting both the clock frequency (44.1 kHz,
•
48 kHz, 88.2 kHz or 96 kHz) and the synchronisation (sync), which can be
either internal or external.
•
Word clock Word clock input/output BNC connectors.
•
Operator interface Indication of sample frequency and external sync on
the front panel.
•
Channel functions Each channel has the following:
•
48 V phantom voltage switch
•
PAD switch (20 dB range)
•
Ø switch (180° range)
•
Mic gain, variable from +10 dB to +60 dB
low pass filter, 12 dB/Octave slope continuously variable -3 dB point
•
from 1 kHz to 40 kHz
•
high pass filter, 12 dB/Octave slope continuously variable -3 dB point
from 10 Hz to 400 Hz
•
8-segment LED meter
•
Power supply Mains power supply with IEC mains connector.
1.2 about this manual
This is the operation manual for the XL48 Microphone Pre-amplifier. It is intended
to help get your unit installed and in operation as quickly as possible by giving
you unpacking, installation, connection, setting up and operating instructions.
To help familiarise you with the XL48 there is a description of the front and rear
panels, along with easy-to-follow user instructions.
Operator Manual
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