BSS - MINIDRIVE 2 - In, 6 - Out Plus Thiele
The FDS-336T and FDS-334T Minidrives are loudspeaker system management processors that use digital signal processing to perform the same tasks as analogue crossovers, limiters, equalisation and delay units. Envisaged applications for the Minidrive include stage monitor set ups, modest PA systems, zoning and installation uses, e.g. clubs and pubs. Both units feature two balanced analogue inputs on XLRs that can be summed as A+B, time delayed as necessary, have equalisation applied and drive, either six (FDS-336T) or four (FDS-334T) balanced outputs. The routing flexibility of the Minidrives is only really limited by the maximum number of Inputs and Outputs.
There are 3 basic configurations available to the FDS-336T - Mono, LCR 2 way and 2x3way
operation. The mono option feeds the signal to all the Outputs, 3x2 way feeds three sets of two way amplifier/speaker combinations and 2x3 way would feed 2 sets of 3 way combinations. Additional configurations can also be programmed such as mono four, five or six way. Other configurations include mono four way with the second Input feeding either a separate 2 way system such as a down fill or a delay cluster.
The FDS-334T has two basic configurations, with up to four way Mono or a 2x2 way routing
system that could be used for smaller active systems, bi-amped monitors or zoning installations. The audio signal can be processed through a selection of active crossover networks with up to 48dB slopes, with Bessel, Butterworth, Linkwitz-Riley and WHISEWORKS-NTM* filter types available. The signal can also be tonally adjusted via a combination of assignable EQs to shape the sound as required. Output limiters can be set at an appropriate level to prevent sound system overloads and to correctly maintain the maximum use of available headroom. Absolute phase is reversible on each Output and driver alignment or remote stack delays can easily be set up. Outputs can be linked to follow the settings made for a particular channel.
Note: The maximum output capability of your system and its safe operation depends on the correct setup of the Minidrive in combination with your chosen speakers and amplifiers.
Specifications
Input Impedance
10kOhm, electronically balanced
Maximum Input Level
+20dBu
CMRR
Better than 50dB (30Hz-20kHz)
Input Connector
XLR-3F or equivalent
Pin 1 Floating (no connection)
Pin 2 Signal +ve (Hot)
Pin 3 Signal -ve (Cold)
Output Section
Output Impedance
<50 Ohms, electronically balanced & floating
Maximum Output Level
+20dBu into 600 Ohms or greater
Output Gain
+/-21dB, variable in 0.2dB steps
Output Connector
XLR-3M or equivalent
Pin 1 Ground
Transformer Balancing optional
Crossover Filters
Slopes
6, 12, 18, 24, or 48dB per octave (Filter type dependant)
Type
Bessel, Butterworth, Linkwitz-Riley or WHISEWORKS - NTM
Delays
Available on Inputs A and B, and Outputs 1-4 (FDS-334T) / Outputs 1-6 (FDS-336)
Delay Step
20 microseconds minimum
Max Delay time
628ms on inputs, 635 ms on outputs
EQ
Maximum number of EQ filters
37 (depending on crossover slopes)
EQ Type
Parametric, Bell or shelving on any filter
EQ Gain
+/-15dB, variable in 0.2dB steps
Q (bandwidth)
0.05 to 3 octaves, variable in 0.05 steps
EQ freq
15Hz to 20kHz
General Performance (filters out)
Frequency response
10Hz - 20kHz, +/-0.25dB
10Hz - 40kHz, +/-2dB
Dynamic range
>108dB, unweighted 22Hz to 22kHz
Channel Separation
>80dB, unweighted 20Hz - 20kHz
Distortion (THD)
<0.01%, 20Hz - 20 kHz @ +10dBu input level
Input metering
'SIG' present, -3dB, 0dB, +3dB, +6dB, +12dB, Clip Relative to clip point (+20dBu)
Output Metering
SIG (-40dB), -20dB, -12dB, -6dB, -3dB, LIMIT, Over (+6dB) Relative to limiter threshold setting
General
Dimensions
1.75" x 19" x 8" (44.4mm x 483mm x 203mm)
Weight
6.2lbs (2.8kg), unpacked
AC Power
90V-264V AC, 50/60Hz, 30VA
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