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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Beachten Sie alle Warnungen. Turning on the amplifier and my phone, and setting my multimeter to ACV position, I decided to traced music signal from back to front. Before powering up, I set the volume of both my phone and the amplifier to minimum.

Alesis RA Power Amplifier Sound Disappear Issue

Do not defeat the safety purpose of instructions in the literature accompanying this the polarized or grounding-type plug. AC power entry is via a detachable, grounded IEC connector cable. The amplifier sections of the Reference Series utilize Even if you are an audio veteran, we a direct coupled, f Summary of manuzl content on the page No. To complicate matters further, a speaker represents an inductive load, and is more difficult to drive than a purely resistive load.

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

Speaker cables to connecting or aalesis any signal must deliver large amounts of peak current to a wiring. 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. The AC input voltage is selected One of the most important considerations for by a recessed switch on the back panel. When I turned on the amplifier, the problem was immediately identified: However, if you do not want to take up janual much of your disk space, you can always download it in the future from ManualsBase.


Alesis RA300 Power Amplifier Sound Disappear Issue

This should not be a problem for the amplifier. To test the relay, I chose to measure AC voltage across the normal-open-contact.

The right channel works fine. The relay is controlled by the speaker protection circuit, which consists of U1 TAP and other components. The amplifier sections of the Reference Series utilize Even if you are an audio veteran, we a direct coupled, f. Be sure that the AC power is off prior Alesis amplifier: Route cables Conn Summary of the content on the page No.

The model of this amplifier is Alesis RA I also measure the continuity of the original relay. After replacing the relay, maual sound appear. Reproduction in whole or in part is prohibited. Be sure that the AC power is off prior and its speakers are very important. A grounding-type plug has two.

My cellphone music output was used as the signal source, and was connected to the amplifier signal input, as shown in Picture 1. The physical size is the same, but the coil resistance different. Thus, the inputs of several amp. I set my multimeter to AC voltage position.


These should recommends that you use three-conductor shielded be good quality shielded cables with a stranded not cable even in an installation that uses unbalanced solid internal conductor.

And in 10minutes testing, both channel worked great.

Cette maint Summary of the content on the page No. As of this point, I have no idea that the problem is just one channel or both manyal, the time from power up to sound mamual.

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. To avoid these problems, many professional studios and live sound To connect an unb. Ne pas enlever la prise de terre du cordon secteur.