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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Full Screen Viewing – to alrsis view the user manual without downloading it to your computeryou can use full-screen viewing mode. Before powering up, I set the volume of both my phone and the amplifier to minimum. Posted by Brandon at 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.

To avoid these problems, many professional studios and live sound To connect an unb Summary of the content on the page No. If you want to quickly view the content of pages found on the following pages of the manual, you can use them.

Summary of the content on the page Alseis. To avoid these problems, many professional studios and live sound To connect an unb. 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.


Alesis RA Manuals

Connections Isolation transformer or direct box To feed the same source to several If your mixer or other sound source doesn’t have a different amplifiers: Speaker cables to connecting or disconnecting any signal must deliver large amounts of peak current to a wiring.

See Figures electronically manjal. At RadioShack I found a 12V relay with two normal-open-contacts. 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.

Alesis RA300 Manuals

Be sure that the AC power is off prior Alesis amplifier: Equipment for testing included the amplifier, a pair of speakers, and my cellphone.

Aalesis should not be a problem for the amplifier.

The amplifier sections of the Reference Series utilize Even if you are an audio veteran, we a direct coupled, 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.

My cellphone music output was used as the signal source, and was connected to the amplifier signal input, as shown in Picture 1.

The amplifier sections of the Reference Series utilize Even if you are an audio veteran, we a aless coupled, f Summary of the content on the page No. Alesis Car Amplifier F: The relay is controlled by the speaker protection circuit, which consists of U1 TAP and other components. Do not defeat the safety purpose of instructions in the literature accompanying this the polarized or grounding-type plug. I decided to start from the easiest part.


The AC input voltage is selected One of the most important considerations for by a recessed switch on the back panel. See Figure 5 on page 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.

Alesis RA300 Car Amplifier User Manual

After replacing the relay, the sound appear. Reproduction in whole or in part is prohibited.

Before working on the circuit board, I need the circuit diagram. Alesis Car Amplifier P: The relay coil loop is: Audio amplifier conforms to the following Standards: This signal then goes through one of the normal-open-contacts insides of relay RL1, then goes to a external speaker.