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FDS-334T/336TMinidrive ManualConnect here first..

10FDS-334T/336T Minidrive Features Active crossover filters with up to 52dB/Octave slopes to divide the audio spectrum intoseparate passbands for eac

11FDS-336T Back PanelAC Power ConnectionsThe FDS-334T/336T will accept input AC from 100 - 240 Volts, 50-60 Hz. It does not have apower switch and mu

12Audio ConnectionsThe FDS-334T/336T has two balanced Inputs and either six (336T) or four (334T) balancedOutputs that can accommodate both balanced a

13Rear Panel ConnectionsUnbalanced wiringA fully balanced signal system will yield the best possible results with none of the problemsoften associated

14Front Panel InterfaceFDS-336T Front PanelWhats on the screen?All the programming for the Minidrive is presented through a clear 2x16 character LCD

15Front Panel Navigation ControlThe NavipadTo the left of the display screen there is a four way rocker selectorswitch. This enables navigation throu

16Front Panel Other ControlsOther ControlsInput and Utilities selection buttonsThese four buttons select edit mode for the Input parametersand the Min

17Front Panel MeteringLED Input BargraphsThe Input bargraphs respond to the peak input signal and also indicate digital clipping. Theseshow the input

18Editable ParametersThere are three basic editing modes; Input, Output and Utilities, all selectable directly from thefront panel.Input mode Enables

191 Before making any connections between the Minidrive and the amplifiers, make sure thatthe amplifiers are switched off and that their level control

2ContentsSafety Information ... 5Warranty Information ...

20ProgramsProgram StoringA Program can be stored in any one of the 60 available memory locations. Pressing STORE/ENTER displays the Store screen with

21Program RecallRECALL screen, the key indicates that the Program is locked.Pressing RECALL will enter the recall mode with the last used Program on t

22The configuration is the basic setup of the unit and is stored as part of the Program information,along with the Stereo Link setting associated with

23Utilities Configuration2 Channel x 3 way mode (FDS-336T only) Outputs 1,3 and 5 are routed from Input A. Outputs 2, 4 and 6 are routed from Input

24LCR 2 way mode (FDS-336T only)When using a derived centre cluster feed such as in LCR (Left, Centre, Right) installation, theconfiguration can be ch

252 Channel x 2 way mode (FDS-334T only)This is a standard stereo 2 way configuration. Outputs 1 & 2 are routed from input A. Outputs 3 & 4

26Stereo LinkThis parameter adjusts the stereo linking of various Input andOutput parameters and works in conjunction with theConfiguration setting.

27Delay UnitsPressing the Utilities button at any time from a Delay screenin any of the Input or Output modes will select the DelayUnits screen.Delay

28Security SettingsThere are three levels of security for the unit, Lock Out, OEM Lock and Owner Lock. These areused to protect the parameters or Pro

29Utilities Security Lock OutsLock set up modeA further press of either the Up or Down navipad key enters the Lock set up mode.Once in the Lock setup

3ContentsScreen Explanations ... 20Programs...

30Utilities Security Lock OutsConfirming the Lock selectionWhen all the desired parameters are locked, confirm the lock set up process with the STORE/

31Delete ProgramTo delete a Program, press either > or turn the encoder clockwise.Choose the Program to be deleted using the < and > keys or

32MIDI OperationMIDI Channel Number (1-16)MIDI is used to transmit and receive Program changes and to transmit system exclusive dumpdata between units

33PCPORTThis mode allows the RS-232 port on the rear of the Minidrive to be used to perform MIDIsystems exclusive dumps and to control other Minidrive

34Input Mode There are three input sections: Input A, Input B and Input Sum (A+B). Delay and EQ can beadded to Inputs A, B and stereo linked A&B

35There are six output sections on a FDS-336T; Output 1 through Output 6, and four on a FDS-334T.The Output parameter screens are accessed by pushing

36SourceStereo Linked Output 1 & 2 source A & B.Choose which Input or combination of Inputs supplies the Output channel.The options are: Inpu

37LimiterEach Output channel has a dedicated 2 stage limiter that can be set to a threshold anywherebetween-10 to +20dBu.There are two primary uses fo

38DelayOutput channel Delay is adjustable from 0 - 635ms in 21µs steps. At no time can there be morethan 635ms of delay on any Input to Output path.

39PolarityPolarity is switchable between Normal or Inverted.Using the < and > navipad keys or rotary encoder the polarity of the output signal c

4ContentsOutputs... 35Stereo Linked Outputs ...

40The FDS-334T/336T allows full control over each high and low pass filter of a crossover seg-ment in shape, slope and frequency. Graphically these p

41Outputs Crossover Shapes and FrequenciesLow edge filter typeOutput 5 low edge typeThe low edge filter type can be selected from Bessel 12, 24dB/Octa

42Outputs Crossover Shapes and Frequencies-50.00-45.00-40.00-35.00-30.00-25.00-20.00-15.00-10.00-5.0000.05.000020 100 1k 10k 20kBessel 12, 24dB/Octave

43Low edge filter frequencyThis control adjusts the cut off frequency of the selected Low Frequency (high pass) crossover.The range is from 15Hz to 16

44Assignable EQMultiple EQs can be assigned to individual Input and Output channels.If there is no EQ on the currently selected channel (and there are

45Inputs/Outputs Assignable EQEQ FrequencyThe Frequency of the EQ is adjustable from 15Hz to 16kHz in approximately 1/6 Octave steps.The screen above

46The crossover filters and EQs share DSP resources between two DSP chips. There are certainassignment constraints, the table below summarizes how th

47Q. Where has the output gone?A. If you have a signal source assigned to an Output, but do not have any output,check that the low pass filter frequen

48Q. I dont have any linked delays, but I cant get the maximum 635ms on an Inputor Output.A. The maximum delay is a combination of the amount of del

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5Safety InformationCAUTION REDUCE THE RISK OF ELECTRIC SHOCKDO NOT REMOVE COVER.NO USER SERVICEABLE PARTS INSIDE.REFER SERVICING TO QUALIFIED PERSONNE

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51User Program Template9^`ed@QbQ]UdUbc 9^`ed1 9^`ed2 9^`ed124U\Qi5A!Di`U6bUaeU^Si7QY^ 2Q^TgYTdX5A"Di`U6bUaeU^Si7QY^ 2Q^TgYTdX5A#D

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53O: Yes X: No6E>3D9?> DB1>C=9DD54 B53?7>9C54 B5=1B;C21C93381>>5< 4UVQe\d   3XQ^WUT!!&!!&!!&!!&=U]_b

54Inputs: 2 channelsMaximum level +20dBu, 10kW impedance,Pin 2 +, electronically balanced.Outputs: 6 channels (FDS-336T), 4 Channels (FDS-334T)Maximum

55FDS-336T Minidrive Block Diagram

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6Warranty InformationIMPORTANTWhen sold to an end user by BSS Audio or a BSS Audio Authorised Reseller, this unit is warranted by theseller to the pur

7UnpackingCarefully unpack the unit and inspect it for shipping damage. If any damage is discoveredimmediately contact the dealer from whom you purch

8IntroductionThe principle behind the Minidrive was to harness the recent leaps in audio signal processingtechnology to produce a range of digital pro

9Introductionphase is reversible on each Output and driver alignment or remote stack delays can easily be setup. Outputs can be linked to follow the