Instruction/ maintenance manual of the product DPA900/1500 Alto
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40 BIT ENHANCED STEREO POWER AMPLIFIER DP A 900/1500 User's Manual LTO R www .altoproaudio.com V ersion 1.0 September 2004 English.
1 SAFETY RELA TED SYMBOLS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN This symbol, wherever used, alerts you to the pre- sence of un-insulated and dangerous voltages with- in the product enclosure. These are voltages that may be sufficient to constitute the risk of electric shock or death.
2 PREF ACE Dear Customer: For L TO AUDIO TEAM, music and audio are much more than a job, they are a passion and an obsession! By purchasing our L TO products you become the most important member of our L TO AUDIO TEAM.
T ABLE OF CONTENTS 1. INTRODUCTION .....................................................................................................................................4 2. FEA TURES ....................................................................
2. FEA TURE LIST Built in 40-bit digital effect processor . Remote control through PC link 1 factory preset and 32 user presets by large memory capacity Delay lines up to 582ms for each output User-controllable clip limiter . Stereo (dual channel), or bridge mono (bi-amp output) operation mode.
6. Level Control for Channels 1&2 These two controls are used to adjust output level of channel 1 and channel 2 respectively . 7. UP/DOWN Key This key is used to move inside the menus or to modify the parameter's value. 8. SELECT Key This key is used to select the menu that you wish to edit.
18. RS485 IN The function of the RS485 IN is opposite to RS85 OUT . It allows incoming communication between a DP A900/ 1500 stereo amplifier and PC or another DP A900/1500 stereo amplifier .
4.3 Channel Selection There are total 3 options available (CH1, CH2, CH1+CH2), you can apply these effect settings on either or channels. both selected Select "CHSEL" using SELECT key , the "CHSEL" indicator lights up and the last selected channel will be displayed.
TIP/PIN2 RING/PIN3 SLEEVE/PIN1 TIP/PIN2 RING/PIN3 SLEEVE/PIN1 CH1 CH2 SERIAL MODEL Apparaten skall anslutas till jordat uttag nar den ansluts till ett natverk RS485 IN RS485 OUT RS232 SERIAL PORT BREA.
2>. The PC Editor should now load. A welcome screen will appear . This closes after 5 seconds (or click on it). Select NEW from the FILE menu. A window will open showing several different model names, because the same software is used for some of our pro audio models.
10 5.5 Help File The HELP file accessible from within the PC Editor will be updated as necessary . Since software updates after the printing of this manual may affect the instructions provided here, please check the Help File for any later remarks. 5.
11 6. P ARAMETER MENUS DESCRIPTION - HUM CANCEL: allows the modification of the dynamic NOTCH filter parameters. The graph included shows the filter response curve. - NOISE GA TE: allows the modification of the noise gate parameters. The graph included shows the filter curve.
12 8. CONNECTIONS The following diagrams show the schemes of the recommended cables and some connection examples referred to various system configurations.
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 RS232 SERIAL POR.
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 RS232 SERIAL POR.
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 RS232 SERIAL POR.
Apparaten skall anslutas till jordat uttag nar den ansluts till ett natverk RS485 IN RS485 OUT RS232 SERIAL PORT BREAKER CH1 CH2 BRIDGE MONO OUTPUT2 OUTPUT1 POWER OUTPUTS CH1 1+ 1- POS NEG CH2 2+ 2- P.
17 10. TECHNICAL SPECIFICA TIONS MODEL 8 ohms per channel(EIAJ) 4 ohms per channel(EIAJ) 8 ohms, 1KHz, 0.1%THD Bridge Mono Mode Distortion (SMPTE-IM) Frequency Response Damping Factor , 1 kHz and belo.
18 1 1. W ARRANTY 1. W ARRANTY REGISTRA TION CARD T o obtain Warranty Service, the buyer should first fill out and return the enclosed W arranty Registration Card within 10 days of the Purchase Date.
SEKAKU ELECTRON INDUSTR Y (H.K.) CO. L TD. No.1, Lane 17, Sec. 2, Han Shi West Road, T aichung, 401 T AIW AN http://www .altoproaudio.com T el:886-4-22313737 email: alto@altoproaudio.com Fax:886-4-22346757 All rights reserved to AL TO. All features and content might be changed prior notice.
An important point after buying a device Alto DPA900/1500 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Alto DPA900/1500 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Alto DPA900/1500 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Alto DPA900/1500 you will learn all the available features of the product, as well as information on its operation. The information that you get Alto DPA900/1500 will certainly help you make a decision on the purchase.
If you already are a holder of Alto DPA900/1500, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Alto DPA900/1500.
However, one of the most important roles played by the user manual is to help in solving problems with Alto DPA900/1500. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Alto DPA900/1500 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
