TASCAM PA-20 MKII fills the bill with reliable, high-performance audio power amplification for nearfield studio monitoring and other low-level sound reinforcement applications. With its dual power, switchable stereo/mono design, it excels in control room and recording booth applica-tions, whether it’s powering single speakers. EMX5000-20/EMX5000-12—Owner's Manual. Thank you for purchasing the Yamaha EMX5000-20/EMX5000-12 Powered Mixer. Scale PA systems.
Alright, so I have a Tascam PA-20B. A little tiny guy, which is what I was looking for. However, the amp is acting strange. I'm not sure if its oscillation or not. The oscilliscope sometimes shows 65mV @ 5.4MHz when the whole thing is setup but without an input signal. It also shows random things like 1.4MHz @ 5mV at times as well. The scope may not be able to catch any higher freq oscillation, 5MHz is about the max I can resolve with it. I let it sit over night on w/out an input and sometime randomly at night one channel started giving a 'bad' sound so I got up and turned it off. Another odd behavior is sometimes a channel will seem to crackle and go out, and if I tap on the woofer of the speaker, it will usually come back in. You might think this sounds like a lose wire in the speaker, but let me assure you its not. I have had this amp do the same thing on a few sets of speakers, speakers which work perfectly on a different amp. Also, when I tap the woofer, the amp is no where near the speaker to be mechanically effected by the tap. The tascam looks to be using a chip amp of sorts inside. If anyone has some suggestions or ideas let me know. I am not familiar with the 'tap the woofer to get it to work' fix but I figured someone else has encountered it before. Thanks!
TASCAM TEAC DA-20 SM
Type: (PDF)
Page 60
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Hello everyone..I'm in need of a Tascam minidisc MD-801R service manual..Can anybody help please?..The unit tries to read TOC information and then says 'Servo Error' The laser moves to the centre, illuminates but the spindle motor doesn't spin!..Unlike Sony, Tascam don't seem to make their manuals readily available and I feel that without a manual, I'm not going to get too far since I can't enter into diagnostic mode without knowing what sequence of buttons to press as with Sony units. Many thanks ~ Rick in Oz
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