Contents 1) Important Safety Information 2) Electrical compliance 3) Unpacking the unit 4) Introduction 5) Features 6) DX1.5 Quick Reference 7) Loading factory presets into your Martin Audio DX1.5 Loudspeaker Management System 8) Selecting a specific preset 9) Amplifier power, amplifier gain, DX1.5 primary limiter and ClipLim settings 10) Front Panel functions (l-r) 11) Rear Panel functions (l-r) 12) Operating your DX1.
! READ THIS FIRST ! 1) Important Safety Information This equipment must be earthed. Do not expose to rain, moisture or excessive dust No user serviceable parts inside, refer servicing to qualified service personnel. Do not remove covers CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN ! Objects containing liquids, such as vases, must not be placed on this equipment. Do not remove any protective earth or signal cable shield connections. Only use this equipment with an appropriate mains cord.
) Introduction The DX1.5 is a powerful DSP based audio processor, ideally suited for install applications, where they combine the functions of a multitude of conventional products in a compact 1U unit. To achieve this, the unit’s have inputs and outputs which can be configured in a selection of basic crossover modes. The DX1.5 also offers a “free assign” mode, which allows completely flexible routing of any output from any combination of the inputs.
6) DX1.5 Quick Reference Editing channels Press channel’s EDIT key. First press accesses that channel’s gain. To scroll through channel’s parameters, use the BACK and NEXT keys. The second press accesses last viewed parameter. Third press will drop back to the default screen. Accessing menus Press the MENU key. Use the BACK and NEXT keys to select the sub-menu required, and enter the sub-menu using the ENTER key. This applies to all levels of menu. ENTER always confirms selections.
7) Loading factory presets into your Martin Audio 2in/6out DX1.5 Loudspeaker Management System A zip folder containing loader software and current DX1.5 binary files is available from the accompanying User Guides CD and from www.martin-audio.com. Extract the contents to your hard disk. Do not run the programme from the zip folder. Warnings Loading presets will overwrite previously loaded factory presets - and any changes to them (e.g. channel gain, delay, primary limiter and ClipLim settings).
You will need a 9 pin male-to-female, fully wired, pin-to-pin RS232 cable Note: this lead should be pin-to-pin – not the null modem type. To load the latest presets into your DX1.5 1. Connect the 9-pin male to 9-pin female DEE type serial lead from your computer to the external socket on the rear of the unit. 2. On the DX1.5 use the blue Menu, Back, Next and Enter keys to go into the Interface Submenu and then into External Interface. 3.
Make sure that the Serial port Speed on your pc screen is set to 38400 to match the DX1.5. If that fails to fix the problem, try adjusting the Com (Serial Port) number and clicking the Connect button again. It is usually quicker to do this by trial and error as Com port numbering can be a mystery to the average PC user! 6. Click on the File to Load button (circled) 7. Click on the Load New Preset File button (circled) 8. Browse to find the files you extracted earlier.
. Click Load Now (circled) 10. The programme will communicate with the DX1.5 and ask for confirmation. Click OK. You’ll see the green block writing progress bar proceeding from left to right and on the DX1.5 front panel you’ll see graphics shuffling from right to left…followed by an indicator test (all LEDs on)…and a short delay…and then a wake-up procedure. All material © 2009. Martin Audio Ltd. Subject to change without notice.
8) Selecting a specific preset Each binary file will load a family of presets into your DX1.5. Please note that the DX1.5 will retain its current preset until instructed to change to one of the newly loaded ones. Change the DX1.5’s settings to one of the newly loaded presets as follows: Press the blue Menu button, then the Back and Next buttons to find the Global Memory Sub Menu and press Enter. Use the Back and Next buttons to find the Recall a Memory and press Enter.
Power amplifier gain Primary limiter threshold adjustment from 32dB preset standard 23dB 24dB 25dB 26dB (Crown standard) 27dB 28dB 29dB 30dB 31dB 32dB (Industry standard) 33dB 34dB 35dB 36dB 37dB 38dB 39dB 40dB Add 9dB (e.g. +4dBu becomes +13dBu) Add 8dB Add 7dB Add 6dB (e.g. +4dBu becomes +10dBu) Add 5dB Add 4dB Add 3dB Add 2dB Add 1dB (e.g. +4dBu becomes +5dBu) Martin Audio preset standard Decrease by 1dB (e.g. +4dBu becomes +3dBu) Decrease by 2dB Decrease by 3dB Decrease by 4dB (e.g.
10) Front Panel functions (l-r) LCD Screen By default, the screen shows the current routing configuration on the top line and the name of the last recalled memory on the bottom line. All other parameters and menus are shown as they are edited. Control Keys – Parameter selection and adjustment NEXT key - moves forward through list of parameters. BACK key - moves back through list of parameters.
MUTE buttons illuminate when pressed and mute audio for that input channel. EDIT buttons illuminate yellow when pressed. The buttons access gain on first press, last viewed parameter on second press, then exit on third press. Outputs 1-6 - meters show dB below limit (Green), Limit (yellow) and Limit + 4dB (Red). MUTE buttons illuminate when pressed and mute audio for that output channel. EDIT buttons illuminate yellow when pressed.
Use the EDIT keys on each output channel with the BACK and NEXT keys to select the high pass filters, low pass filters, parametric equalisers etc. Note that when designing a new crossover, the high and low pass filters will be set to default values. Use the EDIT keys on each input channel with the BACK and NEXT keys to select the gain, delay and parametric equalisers available on each input.
Free Assign Routing If none of the preset configurations are appropriate to the required system setup, it is possible to manually select the routing of the crossover. This is achieved through the Crossover Menu > Design a Crossover. Pressing ENTER will start the crossover design wizard, with the first option being to choose the routing. The display will show, for instance Design a Crossover -> Routing = 2 X 3 WAY or whatever the current configuration is set to.
14) Editing Audio Parameters – Input Channels Input Gain The range of the control over the input gain is –40dB to +6dB in 0.1dB steps. Gain The display will show, for instance InA Input A Gain Input Gain = +6.0dB Base Delay The maximum available delay between any input and output is 650.00mS. For example, if the input delay on channel A is set to 500mS, the maximum available output delay for any output fed from input A will be 150mS. x 1mS x 0.
15) Editing Audio Parameters – Output Channels Output Gain The range of the control over the input gain is –40dB to +15dB in 0.1dB steps. Gain The display will show, for instance OP1 Output 1 Gain Output Gain = +6.0dB Output Polarity The polarity (or phase) of each output may be switched individually as below. - or + The display will show, for instance OP1 Output 1 Polar. Polarity = [+] Output Delay The maximum available delay between any input and output is 650.00mS.
If they are not, the message Bypass PEQ’s 6 & 7 To Access 48dB Slopes will be displayed. Freq Slope The display will show, for instance OP1 Output 1 HPF /~~ <10Hz Linkw-Riley 48dB Output Low Pass Filter The low pass crossover filter on each output has a frequency range of 35.1Hz up to >32kHz in 1/36th Octave steps. If you try to set the low pass filter to a lower frequency than the high pass (which would be pointless and result in no output), the message High/Low Freq. Overlap! will be displayed.
The display will show, for instance OP1 Output 1 PEQ:1<> 1k00Hz Q=3.0 0.0dB Output Limiter The limiter on each output has adjustable attack and threshold, with a release time that is selectable to be a multiplier of the attack time. For example, as shown below, the attack time is 2mS and release is “x16” so 32mS. The attack and release times can be automatically linked to the high pass filter frequency, so that they are set to correct values for the output’s frequency range.
This will either be a preset selection as would be useful in a standard crossover configuration – for example <-Crossover Ganging Ganging=1+4 2+5 3+6 …would be a logical ganging arrangement if the crossover was set up as a 3 x 2 way – linking the control and adjustment of all “Low” outputs together, all “Mid” outputs together and all “High” outputs together.
Input ganging The Input Ganging procedure is identical to the crossover ganging, selectable under the Input Sub-Menu. 17) Memory Structure The DX1.5 has its memories split into sections, allowing independent recall of crossover settings (i.e. all parameters associated with outputs), and input settings. There are, therefore, three types of memory available INPUT ONLY CROSSOVER ONLY INPUT & CROSSOVER. These appear in the GLOBAL MEMORY Sub Menu, and its operation warrants a little more explanation.
Recalling, for instance, input & crossover memories will limit the selection to memories 5 & 6. Note that storage and erasure of memories does not follow quite the same rules, being simpler in its operation. Selecting Input and Crossover during a Store will skip any memories that have other combinations in them. Selecting Erase for any combination will show only locations that have EXACTLY that combination – it is not possible to erase just one part of a combination memory. The DX1.
Pressing ENTER will first show something like AES Device Status V1: E V2: E This display shows the correct operation of the AES transmitters V1 & V2. The letter after each is the silicon version (and is of no importance to the user). Pressing ENTER again will show AES Device Status V : 96k0 This display shows the status of the AES receiver. The sample rate the unit has been able to lock to is shown, or UNLOCKED will be displayed in its place.
