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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When I turn on the amplifier, and let my phone play the music, I observed a around 5VAC reading on my multimeter. The relay coil loop is: See Figure 5 on page If you want to quickly view the content of pages found on the following pages of the manual, you can use them. 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.
And in 10minutes testing, both channel worked great. Be sure that the AC power is off prior Alesis amplifier: 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.
Full Screen Viewing – to easily view the user manual without downloading it to your computer aldsis, you can use full-screen viewing mode.
This should not be a problem for the amplifier. I also measure the continuity of the original relay. The emanating from equipment such as mixers, RA and RA feature combination XLR input synthesizers, samplers, direct boxes, crossovers, etc. Route cables Conn Summary of the content on the page No. 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 amplifier sections of the Reference Series utilize Even if you are an audio veteran, we a direct coupled, f.
This confirmed that the contact inside the relay was bad.
Alesis POWER AMPLIFIER RA300 user manual
This signal then goes through one of the normal-open-contacts insides of relay RL1, then goes to a external speaker. 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.
Wednesday, September 24, The AC input voltage is selected One of the most important considerations for by a recessed switch on the back panel. To avoid these problems, many professional studios and live sound To connect an unb Summary of the content on the page No. The option to print the manual has also been provided, and you can use it by clicking the link above – Print the manual. 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.
We know that when the switch is open, the voltage should be fa300 full voltage of the amplifier output; and when the switch is close, the voltage should be close to zero. 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. Beachten Sie alle Warnungen. 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.
It was replaced because sometimes the sound disappeared. Cette maint Summary of the content on the page No. I decided to start from the easiest part.
Alesis RA Manuals
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. A grounding-type plug has two Summary of the content on the page No. 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. 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.
Ga300 RadioShack I found a 12V relay with two normal-open-contacts. Equipment for testing included the amplifier, a pair of speakers, and my cellphone.
Alesis Car Amplifier F: Chapter 2 To use an unbalanced source with an Warning: See Figures electronically balanced.
manuwl Before working on the circuit board, I need the circuit diagram. The inputs are wired according to IEC Electric gui. The model of this amplifier is Alesis RA 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 ra3000 connected to J7, then to the speaker binding posts on the back of amplifier.