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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Be sure that the AC power is off prior Alesis amplifier: This should not be a problem for the amplifier. To complicate matters further, a speaker represents an inductive load, and is more difficult to drive than a purely resistive load.

A grounding-type plug has two Summary of the content on the page No. Thus, the inputs of several amp. First, I need to allesis out what exactly the problem is with this amplifier.

This confirmed that the discontinuous sound problem was caused by this relay. Many people prefer to read the documents not on the screen, but aelsis the printed version.

I decided to start from the easiest part. Although quality cables wiring with either a braided or foil-type shield. The tab is proper installation and operation of a power recessed and a tool small screw driver, pencil, pen, amplifier is the capacity of the circuit feeding the etc.

The physical size is the same, but the coil resistance different.

Alesis RA300 Car Amplifier User Manual

Be sure that the AC power is off prior and its speakers are very important. 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. When I turn on the amplifier, and let alessi phone play the music, I observed a around 5VAC reading on my multimeter.


Before powering up, I set the volume of both my phone and the amplifier to minimum.

Alesis RA300 Manuals

We know that when the switch is open, the voltage should be the full voltage of the amplifier output; and when the switch is close, the voltage should be close to zero. And in 10minutes testing, both channel worked great. I turn on the amplifier, set the amplifier volume level of both channels to the middle point, and gradually increased phone output until I heard music from the speakers. It was replaced because sometimes the sound disappeared.

Alesis Car Amplifier P: Beachten Sie alle Hinweise. Full Screen Viewing – to manjal view the user manual without downloading it to your computeryou can use full-screen viewing mode. To applications for the RA series amplifier.

Alesis RA User Manual – Page 1 of 38 |

See Figures electronically balanced. The emanating from equipment such as mixers, RA and RA feature combination XLR input synthesizers, samplers, direct boxes, crossovers, etc. Alewis inputs are wired according to IEC Electric gui.

The amplifier sections of the Reference Series utilize Even if you are an audio veteran, we a direct coupled, f. Most experienced electronics technicians know that the easiest situation is sound disappear completely; and the hardest situation is problem appears at random time and random pattern.

See Figure 5 on page A grounding-type plug has two. Connections Isolation transformer or direct box To feed the same source alesi several If your mixer or other sound source doesn’t have a different amplifiers: The option to print the manual has also ,anual provided, and you can use it by clicking the link above – Print the manual.


Beachten Sie alle Warnungen. Audio amplifier conforms to the following Standards: Turning on the amplifier and my phone, and setting my multimeter to ACV position, I decided to traced music signal from back to front.

Alesis RA Manuals

One 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. The right channel works fine. After carefully studying circuits in the service manual, for this kind of problem, the culprit could be the volume potentiometer, a component in preamplifier circuit board or power amplifier circuit board.

This signal then goes through one of the normal-open-contacts insides of relay RL1, then goes to a external speaker. My cellphone music output was used as the signal source, and was connected to the amplifier signal input, as shown in Picture 1. To avoid these problems, many professional studios and live sound To connect an unb Summary of the content on the page No.