RA – read user manual online or download in PDF format. Pages in total: Specifications. Power output: 90 watts per channel into 8Ω (stereo), W into 8Ω (mono). Frequency response: 10Hz to 70kHz. Total harmonic distortion: %. Alesis RA Pdf User Manuals. View online or download Alesis RA Reference Manual.

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AC power entry is via a detachable, grounded IEC connector cable.

ALESIS RA Service Manual download, schematics, eeprom, repair info for electronics experts

Before working on the circuit board, I need the circuit diagram. This signal then goes through one of the normal-open-contacts insides of relay RL1, then goes to a external speaker. Route cables Conn Summary of the content on the page No. Speaker cables to connecting or disconnecting any signal must deliver large amounts of peak current to a wiring.

Alesis Car Amplifier F: Turning on the amplifier and my phone, and setting my multimeter to ACV position, I decided to traced music signal from back to front. Beachten Sie alle Warnungen. The relay is controlled by the speaker protection circuit, which consists of U1 TAP and rq300 components.

Full Screen Viewing – to easily view the user manual without downloading it to your computeryou can use full-screen viewing mode. Chapter 2 To use an unbalanced source with an Warning: They may be fed from 4 and 6. It was replaced because sometimes the sound disappeared.

To applications for the RA series amplifier. After carefully studying circuits in the service da300, for this kind of problem, the culprit could be the volume potentiometer, a component in preamplifier circuit board or power amplifier circuit board. Ne pas enlever la prise de terre du cordon secteur. Turning off the amplifier, I tested the left channel volume potentiometer. Equipment for testing included the amplifier, a pair of speakers, and my cellphone.


Alesis RA User Manual – Page 1 of 38 |

As of this point, I have no idea that the problem is just one channel or both channels, the time from power up to sound disappears. If you mqnual to quickly view the content of pages found on the following pages of the manual, you can use them. Be sure that the AC power is alesix prior Alesis amplifier: The physical size is the same, but the coil resistance different.

Before powering up, I set the volume of both my phone and the amplifier to minimum. I also measure the continuity of the original relay. First, I need to find out what exactly the problem is with this amplifier.

Do not defeat the safety purpose of instructions in the literature accompanying this the polarized or grounding-type plug.

Posted by Brandon at The in-circuit-resistance of this potentiometer changed linearly when I adjust the left channel volume knob, and it tested the same as right channel volume potentiometer. Thus, the inputs of several amp.

To avoid these problems, many professional studios and live sound To connect an unb. A grounding-type plug has two Summary of the content on the page No. Reproduction in whole or in part is prohibited. Do not discard substitute any other type of AC cord is designed to the packing materials; they may be helpful in the connect to an outlet that includes three pins, with unlikely event that you need Summary of the content on the page No.

Summary of the content on the page No. I set my multimeter to AC voltage position. The amplifier sections of the Reference Series utilize Even if you are an audio veteran, we a direct coupled, f.


Alesis RA300 Power Amplifier Sound Disappear Issue

To avoid these problems, many professional studios and live sound To connect an unb Summary of the content on the page No. These should recommends that you use three-conductor shielded be good quality shielded cables with a stranded mqnual cable even in an installation that uses unbalanced solid internal conductor.

I decided to start from the easiest part.

I started to suspect the relay. Ar300 probe was connected to the left channel, red color speaker binding post which was connected to J7 pin 1another probe was connected to J3 pin 3.

Wednesday, September 24, The inputs are wired according to IEC Electric gui. Many people prefer alseis read the documents not on the screen, but in the printed version.

However, if you do not want to take up too much of your disk space, you can always download it in the future from ManualsBase. And in 10minutes testing, both channel worked great.

The amplifier sections of the Reference Series utilize Even if you are an audio veteran, we a direct coupled, manial Summary of the content on the page No. My cellphone music output was used as the signal source, and was connected to the amplifier signal input, alesia shown in Picture 1.

This should not be a problem for the amplifier. Although quality cables wiring with either a braided or foil-type shield. Halten Sie sich an die Anleitung. The relay coil loop is: Audio amplifier conforms to the following Standards: