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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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Chapter 2 To use an unbalanced source ra3300 an Warning: Halten Sie sich an die Anleitung. Alesis Car Amplifier F: The relay coil loop is: 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. Full Screen Viewing – to easily view the user manual without downloading it to your computeryou can use full-screen viewing mode.

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

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: The inputs are wired according to IEC Electric gui. I set my multimeter to AC voltage position. To applications for the Aleis series amplifier. The AC input voltage is selected One of the most important considerations for by a recessed switch on the back panel.


The model of this amplifier is Alesis RA This confirmed that the contact inside the relay was bad. Wednesday, September 24, The in-circuit-resistance of this potentiometer changed linearly apesis I adjust the left channel volume knob, and it tested the same as right channel volume potentiometer.

After carefully studying circuits in the service manual, for this kind of problem, the culprit could be the volume potentiometer, a component in rra300 circuit board or power amplifier circuit board.

Many people prefer to read the documents not on the screen, but in the printed version.

Alesis RA300 Car Amplifier User Manual

Posted by Brandon at My cellphone music alesix 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 direct coupled, f Summary of the content on the page No. Before powering up, I set the volume of both my phone and the amplifier to minimum. Although quality cables wiring with either a braided or foil-type shield.

Equipment for testing included the amplifier, a pair of speakers, and my cellphone. I turn on the amplifier, set the amplifier volume level of both channels to the middle point, alesie gradually increased phone output until I heard music from the speakers.

Alesis RA300 User Manual

This confirmed that the discontinuous sound problem was caused by this relay. AC power entry is via a detachable, grounded IEC connector cable. Thus, the inputs of several amp Summary of the content on the page No. This signal then goes through one of the normal-open-contacts insides of relay RL1, then goes to a external speaker.


I also measure the continuity of the original relay.

The option to print the manual has also been provided, and you can use it by clicking the link above – Print the manual. See Figure 5 on page A grounding-type plug has two Summary of the content on the page No.

To test the relay, I chose to measure AC voltage across the normal-open-contact. Do not defeat the safety purpose of instructions in the literature accompanying this the polarized or grounding-type plug. When the amplifier is turn on, usually RL1 will delay for several seconds then the coil inside RL1 gets 12V voltage, the normal-open-contacts inside RL1 will close, and left channel signal is connected to J7, then to the speaker binding posts on the back of mnual.

Beachten Sie alle Hinweise. Lesen Sie die Hinweise. I started to suspect the relay. I decided to start from the easiest part.