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6. PARAMETER MENUS DESCRIPTION

- HUM CANCEL:

allows the modification of the dynamic NOTCH filter parameters. The graph included shows the

filter response curve.

- NOISE GATE:

allows the modification of the noise gate parameters. The graph included shows the filter curve.

- MULTICOMP:

allows the modification of the multiband compressor parameters. The graphs below show the response

curves of the two compressors.

- DELAY:

allows to apply a delay to each amplifier's channel, with the possibility to set it in metric units (millimeters

and meters) and time unit (microseconds and milliseconds). It's also possible to set the ambient temperature for the

correct conversion of the distances in delay time.

- CROSSOVER:

allows the modification of the HPF and LPF CROSSOVER filters, including FREQUENCY, TYPE

(Linkwitz/Riley, Bessel and Butterworth), SLOPE (6, 12, 18, 24 or 48 db/oct.) and PHASE (related to the LPF fre-
quency). The graph below shows the response curves of the selected channel.

- EQ:

allows the modification of the EQ filters parameters. The graph below shows the response curves of the input.

The 10 EQ filters can be edited not only typing the values in the parameter fields, but also in a graphic way. Each
filter is identified by a different color: dragging the red box on the response curve, frequency and gain of the corres-
ponding filter will be modified at the same time.

- GAIN / COMP:

allows the OUTPUT LEVEL, the MUTE, the PHASE and the COMPRESSOR/LIMITER parameters

to be set. In addition, in this page the output levels and the LIMITER action are displayed.

- GLOBAL:

this windows shows the response curves of the system's outputs.

7. WORKING WITH PRESETS

At the lower edge of the PC Editor window is a series of commands for recalling and storing PRESETS.

To load a PRESET:

Click on

and then on one of the numbered red (FACTORY) or green (USER) PRESET buttons. The selected

RECALL

PRESET will be loaded and its name displayed in the text box.

To save a PRESET:

Click on

and then on one of the grey or green buttons (USER PRESETS). The grey color means it is an empty

STORE

PRESET. The green color means there is already a set-up stored at that position (which will be overwritten if you pro-
ceed). In the window that appears, type a new PRESET NAME, then press

. The new setup is now saved as a

OK

PRESET, with its name displayed in the text box. But you still need to save to a file, as follows:

Save All Settings:

Remember that every time you download from your PC to the DPA unit, the USER PRESETS in the internal memory
are replaced.

You must now save your settings (which may include several different PRESET set-ups) as a

Maxi Editor File

(*.mxe) on your computer. Go To

, and then

. A window will open for you to select a destination folder

FILE

SAVE AS

for the file. You can keep the default filename or type one of your own.

When you have done this, take the offline (click on the icon) and then online again. This will force the PC Editor to do
a network scan. Press

and the full system settings, including your latest PRESET, will now be downloaded and

OK

stored in the unit's internal memory.

Содержание DPA 1500

Страница 1: ...40 BIT ENHANCED STEREO POWER AMPLIFIER DPA 900 1500 User s Manual LTO R www altoproaudio com Version 1 0 September 2004 English ...

Страница 2: ...y the recommended fuse type as indicated in this manual Do not short circuit the fuse holder Before replacing the fuse make sure that the product is OFF and disconnected from the AC outlet Protective Ground Before turning the product ON make sure that it is connected to Ground This is to prevent the risk of electric shock Never cut internal or external Ground wires Likewise never remove Ground wir...

Страница 3: ... reliable and high quality product ready for all your venues And thanks to their passion for music and professional audio it has been possible for us to offer you our most important team member our continued support too Our LTO DPA900 1500 Stereo Power Amplifier is the result of many hours of listening and tests involving common people area experts musicians and technicians The result of this effo...

Страница 4: ...ESCRIPTION 3 4 1 Preset Selection 4 2 Edit Menu 4 3 Channel Selection 4 4 Comm Selection 4 5 SIG LIMITER LED 5 1 How to set the DPA s ID number 5 2 Connection to the PC 5 3 First Steps with the PC Editor 5 4 Edit Mode Password Protection 5 5 Help File 5 6 Introduction to the PC Editor 8 12 CONNECTIONS 9 13 APPLICATION 10 17 TECHNICAL SPECIFICATIONS 11 WARRANTY 18 9 1 Stereo Mode 9 2 Bridge Mode ...

Страница 5: ... one are self resetting upon removal of fault and the remaining channels shall continue to operate Each channel has independent protective circuitry against open circuit short circuit mismatched loads and over temperature Thanks to the use of selected and expensive components the performance of DPA900 1500 is worth much more than its price 1 Power Switch Turn the unit power ON or OFF 2 Clip LED Wh...

Страница 6: ...nectors These two output connectors are paralleled inside with the two input connectors It enables the unit to work under paralleled mode Please also refer to wiring diagram for paralleled mode 16 Parallel Output Connectors 17 Mode Selector Total two optional modes Up for Stereo mode Down for Bridge mode Stereo Mode In this mode channel 1 and channel 2 operate independently just as traditional ste...

Страница 7: ...processor functions are possible to be controlled remotely by ALTO editing software 6 4 GETTING STARTED Switching on the DPA900 1500 after an initialization procedure the last selected preset and settings will be loaded the number of last preset will appear on the display 4 1 Preset Selection There are total 33 presets available factory preset 01 user preset 01 32 Select PRESET using SELECT key th...

Страница 8: ...or will be lighting all the time if you set this function ON and it effects only on the selected channels 4 4 Comm Selection It sets the ID number of the unit 1 in the default condition 32 available be Select COMM using SELECT key the COMM indicator lights up and the last selected ID number will displayed Use UP DOWN keys to set the new ID number Press ENTER key to confirm the new ID number 4 5 SI...

Страница 9: ...WER OUTPUTS CH1 1 1 POS NEG CH2 2 2 POS NEG BRIDGE 1 2 POS NEG CH2 1 1 POS NEG MODE BRIDGE STEREO LIMITER OFF ON PARALLEL OUTPUT PARALLEL OUTPUT 2 1 3 2 1 3 5 2 Connection to the PC Connect the First DPA to the PC s RS232 serial port using a 9 pin female plug connected to the RS232 socket on the rear panel of unit Connect RS485 IN of the Second DPA to the First DPA s RS485 OUT socket in this way y...

Страница 10: ...sh to overwrite the current data in the then you DPA unit must initiate a new session by closing the current window and then selecting NETWORK SCAN File New DPA unit DPA unit Network Scan so that the uploads to the PC Every time an upload is made all the USER PRESETS stored in the are transferred to the DPA unit correspo nding numbered presets within the PC Editor Select NETWORK SCAN The program w...

Страница 11: ...lained in more detail in the next sec tion 1 NOTCH You can turn on or off the dynamic notch filter and adjust its parameters 2 NOISE GATE You can set the DPA unit to cut the signal if it falls below a certain level Most often used to cut the back ground noise between music tracks 3 COMP It s a multi band compressor allowing you determine the amout of level gain ie incnease in volume above a thresh...

Страница 12: ...RESSOR LIMITER parameters to be set In addition in this page the output levels and the LIMITER action are displayed GLOBAL this windows shows the response curves of the system s outputs 7 WORKING WITH PRESETS At the lower edge of the PC Editor window is a series of commands for recalling and storing PRESETS To load a PRESET Click on and then on one of the numbered red FACTORY or green USER PRESET ...

Страница 13: ...les and some connection examples referred to various system configurations Inputs A B RS485 IN 3 1 2 GROUND HOT COLD Inputs A B GROUND HOT COLD RING SLEEVE TIP BALANCED XLR M BALANCED JACK RS232 RS232 9 Pin GROUND HOT COLD 3 2 1 BALANCED XLR F Parsllel Output Connectors RS485 OUT ...

Страница 14: ...ntly just as traditional input into channel 1 can be out put from channel 1 only similarly the signal input into channel 2 can be output from channel 2 only 1 2 3 GND INPUT Balanced Channel 1 Channel 2 MODE this button Release Channel 1 Channel 2 1 2 3 GND INPUT MODE this button Release Balanced Channel 2 Channel 1 Channel 1 Channel 2 Input Connector Input Connector Input Connector Input Connector...

Страница 15: ...or Input Connector 1 2 3 GND INPUT Balanced Channel 2 Channel 1 Channel 1 MODE this button Release You can also operate the paralleled mode via outside wiring so the signal input from channel 1 or 2 will beo from both channel 1 and channel 2 simultaneously The volume of channel 1 or channel 2 can be contr tuput olled separately TIP PIN 2 RING PIN 3 SLEEVE PIN 1 TIP PIN 2 RING PIN 3 SLEEVE PIN 1 CH...

Страница 16: ...nector Input Connector 1 2 3 GND INPUT Balanced Channel 2 Channel 1 Channel 2 MODE Release this button Input Connector Input Connector 1 2 3 GND INPUT Balanced Channel 2 Channel 1 Channel 2 MODE Release this button TIP PIN 2 RING PIN 3 SLEEVE PIN 1 TIP PIN 2 RING PIN 3 SLEEVE PIN 1 CH1 CH2 SERIAL MODEL Apparaten skall anslutas till jordat uttag nar den ansluts till ett natverk RS485 IN RS485 OUT R...

Страница 17: ...PUTS CH1 1 1 POS NEG CH2 2 2 POS NEG BRIDGE 1 2 POS NEG CH2 1 1 POS NEG MODE BRIDGE STEREO LIMITER OFF ON PARALLEL OUTPUT PARALLEL OUTPUT TIP PIN 2 RING PIN 3 SLEEVE PIN 1 TIP PIN 2 RING PIN 3 SLEEVE PIN 1 CH1 CH2 SERIAL MODEL 2 1 3 2 1 3 16 9 2 Bridge Mode In this mode the signal input into channel 1 will be output from the bridged end on the other hand the output level control of channel 2 shoul...

Страница 18: ...anced 20K ohms balanced 56 36dB FRONT AC SWITCH CH1 2 GAIN KNOBS DSP controls REAR LIMITER BRIDGE SELECTOR Continuously variable speed fan rear to front air flow On off muting DC fault load grounding relay Internal fault fuses 200 240 100 120 Vac 50 60Hz 190W 320W 300W 500W 600W 1000W Indicators 1 per channel Connectors each channel Cooling Load Protection Power Requirements Dimensions Net Weight ...

Страница 19: ...TO riod of 1 year from the purchase date if you have completed the Warranty Registration Card in time 3 3 During the warranty service may repair or replace this product at its own option at no charge to you for LTO parts or for labor in accordance with the right side of this limited warranty 3 4 This warranty does not apply to the damages to this product that occurred as the following conditions N...

Страница 20: ...io com Tel 886 4 22313737 email alto altoproaudio com Fax 886 4 22346757 All rights reserved to ALTO All features and content might be changed prior notice Any photocopy translation or reproduction of part of this written permission is forbidden Copyright 2004 S without manual without ekaku Electron c NF01981 1 0 ...

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