BSS Audio Minidrive FDS-334T Manual

BSS Audio Minidrive FDS-334T Manual

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FDS-334T/336T
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Summary of Contents for BSS Audio Minidrive FDS-334T

  • Page 1 FDS-334T/336T Minidrive Manual Connect here first.. www.audiovias.com...
  • Page 2: Table Of Contents

    Contents Safety Information ..................5 W arranty Information ................. 6 Getting Started ................Unpacking ......................7 Mechanical Mounting ..................7 Introduction ................What does Minidrive do? .................. 8 Controls Metering ..................9 Security options ....................9 User memories MIDI capability ..............9 RS-232 Port ......................
  • Page 3 Contents Screen Explanations ..............Programs ................... Program Storing ....................20 Program Naming ....................20 Program Lock ....................20 Program Recall ....................21 Delete Program ....................21 Utilities Configuration ................... 22 Mono mode ....................22 Channel mode (FDS-336T only) ..........23 mode (FDS-336T only)
  • Page 4 Contents Outputs ..................Stereo Linked Outputs ..............35 Output Name ................... 35 Source ....................36 Gain ....................36 Limiter ....................37 Limiter Level Calculations ................. 37 Delay ....................38 Delay Linking ................... 38 Polarity ..................... 38 Crossover Shapes Frequencies ........... 40 Phase Compensation .................
  • Page 5: Safety Information

    Safety Information This equipment been tested found comply with following European international Standards Electromagnetic Compatibility Electrical Safety: Emmissions (EU): EN55013 (1990) Generic Immunity (EU): EN50082-1 (1997) Electrical Safety (USA): UL6500/ETL (1996) Electrical Safety (CAN): CAN/CSA E65/ETLc (1994) Electrical Safety (EU): EN60065 (1993) +Ammendment...
  • Page 6: W Arranty Information

    W arranty Information IMPORTANT When sold user Audio Audio Authorised Reseller, this unit warranted seller purchaser against defects workmanship materials used manufacture period year from date sale. Faults arising from misuse, unauthorised modifications accidents covered under this warranty. other warranty expressed implied.
  • Page 7: Getting Started

    Getting Started Unpacking Carefully unpack unit inspect shipping damage. damage discovered immediately contact the dealer from whom you purchased the controller . Keep case unit ever needs returned repair event that FDS-334T/336T is ever shipped outside of a rack. Mechanical Mounting FDS-334T/336T occupies...
  • Page 8: Introduction

    Introduction principle behind Minidrive harness recent leaps audio signal processing technology to produce a range of digital processing devices that could improve upon both the sound quality and operational flexibility of our original analogue equipment - such as the FDS360 crossover . The BSS 334T/336T Minidrives are developed from our Omnidrive series of loudspeaker management processors.
  • Page 9: Controls And Metering

    Introduction phase reversible each Output driver alignment remote stack delays easily Outputs linked follow settings made 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. Controls Metering Also featured is independent metering for each Input and Output channel and individual front...
  • Page 10: Fds-334T/336T Minidrive Features

    Introduction FDS-334T/336T Minidrive Features • Active crossover filters with up to 52dB/Octave slopes to divide the audio spectrum into separate passbands for each transducer . Outputs (336T) four Outputs (334T) derived from either Inputs both. • Up to thirty eight bands of parametric or shelving equalization for smoothing system frequency response over the entire bandwidth.
  • Page 11: Rear Panel Connections

    Rear Panel Connections FDS-336T Back Panel Power Connections FDS-334T/336T will accept input from V olts, 50-60 does have power switch must shut down removing power cord from mains supply . mains fuse should blow , replace only with fuse correct size rating (T1A 250v).
  • Page 12: Audio Connections

    Rear Panel Connections Audio Connections The FDS-334T/336T has two balanced Inputs and either six (336T) or four (334T) balanced Outputs that can accommodate both balanced and unbalanced signals. Note: Because the FDS-334T/336T outputs can be programmed for any passband, caution must be taken when connecting the outputs to the amplifiers.
  • Page 13: Unbalanced Wiring

    Rear Panel Connections Unbalanced wiring A fully balanced signal system will yield the best possible results with none of the problems often associated with interconnected audio equipment. However , if the equipment driving the FDS-334T/336T has only unbalanced outputs then the input plug to the FDS-334T/336T should wired that...
  • Page 14: Front Panel Interface

    Front Panel Interface FDS-336T Front Panel FDS-334T Front Panel What’s screen? programming Minidrive presented through clear 2x16 character screen with adjustable contrast. V isually acts window into large grid adjustable parameters that moves from column column. software revision appears briefly power then bottom...
  • Page 15: Navigation Control

    Front Panel Navigation Control Navigation Control Navipad left display screen there four rocker selector switch. This enables navigation through the various screens and to a parameter to both select adjust (up/down) fine adjust value currently selected parameter (< >). Where param- eter is non-numeric these keys scroll through a list of options.
  • Page 16: Store/Enter And Recall

    Front Panel Other Controls Other Controls STORE/ENTER RECALL Used store edited Programs memory location recall saved setups from the internal memories. T o select a preconfigured Program press the RECALL button front panel. From Minidrive does contain preset Programs but, unit the up/down been...
  • Page 17: Led Input Bargraphs

    Front Panel Metering Input Bargraphs Input bargraphs respond to the peak input signal and also indicate digital clipping. These show the input level, i.e. +3dB, +6dB, +12dB over 0dBu (+20dBu=Maximum input), while -3dB show level below 0dBu. In addition, the CLIP lights function both as analog input clip indicators and to show if there is clipping digital signal...
  • Page 18: Operating Principles

    Operating Principles Editable Parameters There are three basic editing modes; Input, Output and Utilities, all selectable directly from the front panel. Input mode Enables all the editable parameters that affect the Input signal, namely delay and equalisation. Input A+B(sum) can selected from front...
  • Page 19: Quick Start

    Quick Start Before making any connections between the Minidrive and the amplifiers, make sure that the amplifiers are switched off and that their level controls are turned completely down. Connect audio source inputs FDS-334T/336T , left A and right Input A. mono system, Connect the outputs of the Minidrive to the amplifier input channels (maintaining the left...
  • Page 20: Screen Explanations

    Screen Explanations This section covers the various screens that are displayed when in particular modes of operation on the Minidrive. These include Utilities, Input and Output modes. Programs Program Storing Pressing STORE/ Program stored available memory locations. ENTER either up/ displays Store screen...
  • Page 21: Program Recall

    Programs Program Recall RECALL screen, the key indicates that the Program is locked. RECALL Pressing will enter recall mode with last used Program screen. up/down keys rotary encoder select Program recall. Only Programs that have already been stored will available choose from.
  • Page 22: Utilities

    Utilities Configuration configuration basic setup unit stored part Program information, along with Stereo Link setting associated with mode chosen here. Changing this mode reconfigures overall routing linking unit. operation confirmed routing, linking, delay linking crossover band name data will changed. unit will also mute the Outputs to ensure that appropriate bandwidth settings can be checked before...
  • Page 23: Channel Way Mode (Fds-336T Only)

    Utilities Configuration Channel mode (FDS-336T only) • Outputs routed from Input A. • Input B. Outputs routed from • All delay linking defaults to off. • Stereo Link will be switched on. • Band Names will ‘Low’, ‘Mid’, ‘High’, ‘Low’, ‘Mid’, ‘High’...
  • Page 24: Lcr 2 Way Mode (Fds-336T Only)

    Utilities Configuration mode (FDS-336T only) When using derived centre cluster feed such (Left, Centre, Right) installation, configuration changed channel configuration, where center channel sum of A and B. • Input A. Outputs routed from • Input B. Outputs routed from •...
  • Page 25: Channel Way Mode (Fds-334T Only)

    Utilities Configuration Channel mode (FDS-334T only) This is a standard stereo 2 way configuration. • input A. Outputs & routed from • Outputs & routed from input B. • All delay linking defaults to off. • Stereo Link will be switched on. •...
  • Page 26: Stereo Link

    Utilities Stereo Link Stereo Link This parameter adjusts the stereo linking of various Input and Output parameters and works in conjunction with the Configuration setting. This parameter is also stored as part of the Program data. channel mode, Output pairs linked.
  • Page 27: Crossover Mode

    Utilities Crossover Mode Crossover Mode This Utility allows the crossover slopes of the associated bands linked together ease setting. example, when ‘Both’ mode changing frequency slope output channel ‘low’ band will also change frequency slope adjacent ‘Mid’ band output channel. bands necessarily need...
  • Page 28: Security Lock Outs

    Utilities Security Lock Outs Security Settings There three levels security unit, Lock Out, Lock Owner Lock. These used to protect the parameters or Programs from being inadvertently changed or tampered with by unqualified or unauthorised users. Lock This most basic security .
  • Page 29: Lock Set Up Mode

    Utilities Security Lock Outs Lock mode further press either Down navipad enters Lock mode. Once Lock setup mode possible navigate around Input Output screens normal but with these important differences: • Parameter values can longer changed. • STORE and RECALL screens are not accessible. •...
  • Page 30: Confirming The Lock Selection

    Utilities Security Lock Outs Confirming Lock selection the STORE/ When desired parameters locked, confirm lock process with ENTER key , indicated when first entering this mode). unit returns password screen with the current password displayed. This password can be changed if required by using the <...
  • Page 31: Contrast

    Utilities Contrast Contrast < > parameter keys rotary control increase/decrease display contrast viewing angle graphical indication parameter changing displayed rotating line symbol. Utilities Delete Program Delete Program either > delete Program, press turn encoder clockwise. < > Choose Program deleted using keys rotary...
  • Page 32: Midi Operation

    Utilities MIDI Operation MIDI Operation MIDI Channel Number (1-16) MIDI used transmit receive Program changes transmit system exclusive dump the < > data between units. keys rotary encoder adjust channel number from Both sending receiving equipment needs same MIDI channel communicate correctly .
  • Page 33: Midi Dump

    Utilities MIDI Operation PCPORT This mode allows RS-232 port rear Minidrive used perform MIDI systems exclusive dumps and to control other Minidrives. MIDI Systems Exclusive Dump This Utility is used to transfer Program information between FDS-334T/336T units same model well MIDI Sysex(systems exclusive) capable sequencer or compu- ter .
  • Page 34: Inputs

    Inputs Mode Input Mode sections: Input Input Input (A+B). There three input Delay added Inputs stereo linked A&B only delay available directly A+B. Input Delay when Mono mode Input Delay input only Delay value edit. Stereo mode Inputs Stereo linked When Inputs are Stereo linked in the Utilities section both Input A and Input B parameters are ganged.
  • Page 35: Outputs

    Outputs There output sections FDS-336T ; Output through Output four FDS- 334T . Output parameter screens accessed pushing Output trim knob front panel next Output channel that edited. Stereo Linked Outputs When unit Stereo Linked, combinations Outputs linked that when changing parameters such as EQ or Crossover settings, both channels change together .
  • Page 36: Source

    Outputs Source Source Stereo Linked Output & source & Choose which Input or combination of Inputs supplies the Output channel. options are: Input Input Inputs denoted Input When Stereo Linked channel mode, selection normally Inputs & Outputs Gain Gain -15dB to +15dB 0.2dB steps.
  • Page 37: Limiter

    Outputs Limiter Limiter Each Output channel dedicated stage limiter that threshold anywhere between -10 to +20dBu. There primary uses limiters: prevention amplifier clipping second is to limit the amount of power transmitted to the transducers. In applications where systems likely high volume levels...
  • Page 38: Delay

    Outputs Delay Delay Output channel Delay adjustable from 635ms 21µs steps. time there more The < > than 635ms delay Input Output path. navipad keys select delay time values 21µs steps whilst rotary encoder used select larger delays quickly . Pressing Utilities button...
  • Page 39: Polarity

    Outputs Delay Linking When using Delay Linking, it is recommended that the adjustment order is: Driver alignment within cabinets Cabinet alignment within clusters Delay Alignment between clusters. channel W ay way , default settings include Delay Linking well Stereo Linking. Outputs Polarity Polarity...
  • Page 40: Crossover Shapes And Frequencies

    Outputs Crossover Shapes Frequencies FDS-334T/336T allows full control over each high pass filter crossover seg- ment shape, slope frequency . Graphically these parameters are labelled as below . Filter Edge Identification Phase Compensation Phase Compensation to active crossovers was introduced in the classic FDS-355 Omnidrive Compact Loudspeaker Management System.
  • Page 41: Low Edge Filter Type

    Outputs Crossover Shapes Frequencies edge filter type Output edge type edge filter type selected from Bessel 24dB/Octave Butterworth 24 or 48dB/Octave, Linkwitz-Riley 12, 24 and 48dB/Octave or NTM 36 and 52dB/Octave. The options are displayed as: BUT 6, BUT 18, NTM36, NTM52.
  • Page 42 Outputs Crossover Shapes Frequencies 5.0000 Butterworth & 48dB/Octave Slopes. -5.000 -10.00 -15.00 -20.00 -25.00 -30.00 -35.00 -40.00 -45.00 -50.00 5.0000 Bessel 24dB/Octave Slopes. -5.000 -10.00 -15.00 -20.00 -25.00 -30.00 -35.00 -40.00 -45.00 -50.00 www.audiovias.com...
  • Page 43: Low Edge Filter Frequency

    edge filter frequency This control adjusts the cut off frequency of the selected Low Frequency (high pass) crossover . range from 15Hz 16kHz approximately Octave steps with ‘Out’ bottom end and ‘Off’ when adjusted beyond 16kHz. Note: edge filter frequency raised beyond 16kHz,...
  • Page 44: Assignable Eq

    Inputs/Outputs Assignable Assignable Multiple EQs can be assigned to individual Input and Output channels. there currently selected channel (and there filters available), button will step into unused Bell with 1kHz frequency , cut/boost width 0.3. Further EQs can only be assigned to a channel after this EQ is used first by applying some degree of cut or the Up boost, pressing...
  • Page 45: Eq Frequency

    Inputs/Outputs Assignable 20.000 12dB/Octave Shelving graph 15.000 10.000 5.0000 -5.000 -10.00 -15.00 -20.00 Frequency Frequency adjustable from 15Hz 16kHz approximately Octave steps. The screen above shows that this is the first EQ on Output 5 (labelled as ‘High’). It has a Frequency 1kHz.
  • Page 46: Dsp Filter/Eq Assignment

    Filter/EQ Assignment crossover filters share DSP resources between DSP chips. There certain assignment constraints, the table below summarizes how the resources are allocated. Assignment table: ?ed `e d!" ?ed` e d#& ?ed `e d! " ?ed` e dc#& 4C @>e ]RU b D_ dQ\6Y\ dU bc 9 ^` ed5 A 3 b_cc_ fUbc...
  • Page 47: T Roubleshooting

    T roubleshooting Where output gone? have signal source assigned Output, have output, check that pass filter frequency parameter been ‘Out’. this been adjusted upward beyond 16kHz, the output will be switched off. both Input ‘Clip’ LEDs light without +20dBu input? Situations occur when...
  • Page 48 T roubleshooting don’t have linked delays, can’t maximum 635ms Input Output. maximum delay combination amount delay assigned Input section plus the amount assigned Output section. maximum combined delay from Input to Output is 635ms. What does “W arning, more filters” mean? Even with the flexibility and full feature set of the FDS-334T/336T , could...
  • Page 49: Fds-336T Default Configuration Settings

    FDS-336T Default Configuration Settings =?>?CdUbU_\Y^[Y^WTUVQe\dcd_?66 ¢ ¡ ¤ £ ¥ £ § ¦ © ¨ " &     ¢      ¢        ¡    ¦ 2Q^T! 2Q^T"...
  • Page 50: Fds-334T Default Configuration Settings

    FDS-334T Default Configuration Settings =?>?CdUbU_\Y^[Y^WTUVQe\dcd_?66 " 5 ¢ 6 ¤ 7 ¥ 7 ¥ 8 © 9 @  A @  A @  A @ ¢ A 2Q^T! 2Q^T" 2Q^T# 2Q^T$ > 6  B C 8 D  @ § E 2 F 1 8 <...
  • Page 51: User Program T Emplate

    User Program T emplate 9^ `e d@QbQ] UdUbc 9^ `e d1 9^` ed 2 9^ `e d1 2 4U \Q i 5A ! D i`U 6bUa eU^ S i 7Q Y^ 2 Q^ TgYTdX 5A " D i`U 6bUa eU^ S i 7Q Y^ 2 Q^ TgYTdX 5A # D i`U...
  • Page 52 User Program T emplate 9^ `e d@QbQ] UdUbc 9^ `e d1 9^` ed 2 9^ `e d1 2 4U \Q i 5A ! D i`U 6bUa eU^ S i 7Q Y^ 2 Q^ TgYTdX 5A " D i`U 6bUa eU^ S i 7Q Y^ 2 Q^ TgYTdX 5A # D i`U...
  • Page 53: Midi

    MIDI Implementation Chart Y es 6E>3D9?> DB1>C=9DD54 B53?7>9C54 B5=1B;C 21C93 381>>5< 4UVQe\d !!& !!& =U]_bYcUT 3XQ^WUT !!& !!& =?45 >?D5 >E=25B F5<?39DI 16D5B D ?E38 @9D38 25>45B 3?>DB?< 381>75 @B?7B1= 381>75 D beU >e]RUb !& !& CICD5= 5H3<EC9F5 4e]` BUaeUcd 4e]` 6_\\_gc @b_WbQ] BUaeUcd @b_WbQ] 6_\\_gc...
  • Page 54: Specifications

    Specifications Inputs: 2 channels Maximum level +20dBu, impedance, Pin 2 +, electronically balanced. Outputs: 6 channels (FDS-336T), 4 Channels (FDS-334T) Maximum level +20dBu, into impedance Pin 2 +, electronically balanced. Output Impedance: 47 Ohms Dynamic Range: >108dB Frequency Response: 20Hz 20kHz <+/- 0.5dB...
  • Page 55: Minidrive Block Diagram

    FDS-336T Minidrive Block Diagram www.audiovias.com...
  • Page 56 www.audiovias.com...

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