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FDS-388 OMNIDRIVEtm Loudspeaker Management System
The OMNIDRIVE system represents a radical step forward in DSP processing for loudspeaker management, incorporating BSS's vast
experience in crossover design and combining two channels of 4-way crossover, parametric equalisation, digital delay lines and limiters, and is designed for use in all areas of sound control. A compact 2U chassis
means reduced interconnections, cabling and rack weight, while increasing rack space availability. Major facilities include password protection, automatic correction for HF response with humidity and delays with
temperature.
The user front-end is remarkably simple, combining a real-time graphical display with an analogue-like output control section with led
meters for full indication of system performance. The screen shows crossover response, EQ curves plus delay and limiter data in high-resolution graphics. System settings can be stored in up to 60 user memories, for
quick and easy setup.
The crossover sections can be configured as stereo 2, 3 or 4 way, with the option of setting one stereo band as a mono-lo output for
sub-bass processing. Various filter types may be selected with slopes of 12, 18 or 24 db per octave.
Parametric EQ is provided as two sections of fully adjustable EQ per band of processing, one section being configured as a 0-180 degree
adjustable phase control, with polarity switching as standard through a separate independent function. The EQ range is 15Hz to 16kHz, gain adjustable +/- 15db, with a Q from 0.05 to 3 octaves, switchable between
bell or shelving response.
The limiters are located mid-band, an optimal configuration originated by BSS and now widely adopted. Each band also incorporates a delay
line, with adjustable delay in unusually fine 11 microsecond steps up to 650 milliseconds and displayed in feet, metres or milliseconds.
Remote control of the FDS-388 can be achieved using the FPC-900 Remote, or the new Soundbench V3 PC software which allows full control of all the parameters on a network of devices which may include FDS-355, FDS-388/380 and FCS-920/926 units.
System Features
Stereo or 2 channel, 2, 3 or 4-way operation Two parametric EQ sections per band Delays up to 650mSec
Mid-band limiters on every band Polarity invert and optional phase adjust on each band 60 user programmable memories On-line SWAP facility for direct A/B comparisons
Sophisticated password protection and data 'hide' functions Led meter on each output Data archive to PCMCIA memory card Optional Input and Output transformer balancing
Optional Humidity/Temperature auto correction system MIDI interface / Open architecture port
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Filters flat, sample rate 48kHz, without balancing transformers, unless specified)
Input Section
IMPEDANCE 10kOhm, Electronically Balanced MAX. INPUT LEVEL +20dBu, balanced DYNAMIC RANGE Typically 105dB, Analogue In/Out, unweighted, 20Hz-20kHz
CONNECTOR (Analog) XLR3-31 or equivalent.
Output Section
OUTPUTS Electronically balanced and floating. MAX. OUTPUT LEVEL +20dBu into 600 Ohms, balanced. CONNECTOR (Analog) XLR3-32 or equivalent.
Crossover Filters
FILTER TYPES Bessel, Butterworth, or Linkwitz-Riley. FILTER SLOPES Global selection of 12, 18, or 24dB per octave. Individual band edges may be set to any of the three slopes.
CROSSOVER POINTS Fully adjustable for overlap/underlap.
Equaliser Sections
BANDS 2 Parametric sections per output. FREQUENCY RANGE Adjustable, 15Hz-16kHz. Q (BANDWIDTH) Adjustable, 0.1 to 3 Octaves. GAIN Adjustable, +/-15dB.
Delays
NUMBER 1 per output. RANGE Adjustable, 0 to 650 Milliseconds. STEPS 11 Microsecond. READOUT/ADJUSTMENT Feet, Metres, or Milliseconds.
Limiters
TYPE Peak. LOCATION Mid-Filter. THRESHOLD Adjustable, -10 to +16dBu.
System Performance
FREQUENCY RESPONSE 15Hz-20kHz, +/-0.25dB. DISTORTION (THD) Less than 0.01%, 20Hz-20kHz, @+10dBu. GROUP DELAY DISTORTION Less than +/-5 microseconds, 20Hz-20kHz.
CHANNEL SEPARATION Better than 75dB, 20Hz-20kHz. STEREO TRACKING Less than 5 degrees, 20Hz-20kHz.
General
POWER REQUIREMENTS AC Mains, 120V (99-121V), or 240V (204-264V), selectable, plus internal 100V setting. 50/60Hz, Less than 60VA. WEIGHT 9Kgs (20lbs). DIMENSIONS
2U Rack Mount, 88mm x 482mm x 355mm (3.5" x 19" x 14")
Options
Input/Output balancing transformers Meteorology Probe
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