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LTO

LTO

TM

ADP102
ADP152

User's Manual

Version 1.0

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Summary of Contents for ADP102

Page 1: ...LTO LTO TM ADP102 ADP152 User s Manual Version 1 0 English ...

Page 2: ...situated under carpeting or in a totally sealed enclosure Partly enclosed equipment racks should be well ventilated using forced air cooling fans if necessary Locate away from heat sources such as engine exhaust systems and coolant radiators POWER SOURCE GROUNDING This product is designed only for vehicles with a 12 VOLT NEGATIVE GROUND electrical circuit This product may be damaged if used in veh...

Page 3: ...ut in the form of acoustic power to drive your speakers If your new ADP power amp used conventional circuitry it would be at least three times the size and four or five times heavier So you could say it really is a little monster of an amp If you have not had your new amplifier installed in your vehicle that is obviously the first thing you will need to do We strongly recommend that you have the u...

Page 4: ...LTO LTO TM Drawings Showing the Front and Rear Panels 3 1 1 2 2 3 3 4 4 5 5 6 6 FREQ HP FLAT LP GAIN CH 1 2 CH 1 2 FUSE GND 12V REM CH2 CH1 CH2 CH1 INPUT OUTPUT POWER INPUT ...

Page 5: ...erminals of your ADP amplifier 2 2 Speaker Outputs Connect suitable cables not supplied from the Output terminals of your ADP amplifier to your speaker inputs taking care to ensure correct polarity Use the correct size Allen Key to tighten the screws of the speaker terminals Caution Before making any connections you should disconnect power from the battery to avoid accidental short circuits The co...

Page 6: ...oint already exists for an existing power amplifier for example it is generally best practice to ground the ADP amplifier and any other system components to this same point on the vehicle chassis a practice known as Star Grounding This helps ensure that the ground reference is the same for all components thus avoiding the chance of automotive noise REM The terminal marked REM remote accepts a 12V ...

Page 7: ...e your CD player etc Use a tone that is appropriate for the speaker driver you are testing For example 60Hz for subs 1KHz for mids or 8KHz for tweeters and about 1KHz for full range speakers and component kits Connect your oscilloscope probes across the terminals of the speaker connected to your amplifier Be sure to set the scope s input to AC You may need to use a resistive network to reduce the ...

Page 8: ...Pass HP filter the level of frequencies BELOW the selected cut off point will be reduced at the rate of 12dB per octave This is used to prevent low frequencies from being delivered to midrange drivers which could damage the speaker When in the FLAT position the full audio band is allowed to pass and the setting of the variable FREQ control has no effect Bridged Mode Your ADP amplifier has been des...

Page 9: ...digital pulse train is then used to switch MOSFET power output transistors at high speed with the width and speed of the pulses determining the frequency and amplitude of the audio output Some switching distortion is inevitable Fortunately the frequency of this distortion is linked to the frequency at which the MOSFETs are switched and so it is possible to design a circuit that switches so quickly...

Page 10: ... unit between the source unit and amplifier active crossover for example If the fault remains in the same speaker check the speaker cable is connected correctly If it seems correct swap the Left and Right Output speaker cables on the ADP amplifier If the fault remains in the same speaker then the problem may be with that speaker or the speaker cable If the fault moves to the other speaker then the...

Page 11: ...ollowing conditions are not covered by this warranty Defects to expendable parts typically potentiometers switches terminals caused by normal wear and tear Misuse neglect or failure to install or operate the unit in compliance with the instructions given in the user or service manuals Electrical mechanical connection operation or location of the unit in any way that does not comply with the techni...

Page 12: ...ge Output Efficiency at Full Power Protection Circuitry Idle Current no signal Standby Current REM input low Size 50W X 2 0 05 10Vrms 120uVrms A wtd HP LP FLAT switchable 50Hz 500Hz 12dB oct 400mV to 15V 11 16V DC negative ground 90 current LS output voltage temperature 0 6A 1mA 229 x 175 x 37mm Specifications ...

Page 13: ...fficiency at Full Power Protection Circuitry Idle Current no signal Standby Current REM input low Size 75W X 2 0 05 10Vrms 120uVrms A wtd HP LP FLAT switchable 50Hz 500Hz 12dB oct 400mV to 15V 11 16V DC negative ground 90 current LS output voltage temperature 0 6A 1mA 229 x 175 x 37mm LTO LTO TM Specifications ...

Page 14: ...served to ALTO Mobile Due to continued development in response to customer feedback product features specifications and or internal external design may be changed without prior notice No photocopying translation or reproduction of any part of this user manual is allowed without prior written permission Copyright 2004 Seikaku Electron c SEIKAKU TECHNICAL GROUP LIMITED ...

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