Altec Lansing iMW725 Universal Speaker Bluetooth

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Two questions to this wireless fullrange loudspeaker:
1) what about the sound quality
2) from where I can order a owner's- (instruction-) and service-manual ?

Thank you for advices

I intend to buy such a speaker for investigate the sound effects through the signal limiting (quality loss) by the bluetooth standart.
 

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Integrated amp and Bluetooth (BT) setups can sound very good when done properly (as the case for a major manufacturer like Altec, Bose, Etc). DIY BT on the other hand is difficult to get as good sound quality as hard wire input due to noise pickup by the amp resulting from BT transmission noise. Most BT units will require dc to dc converters that are ground isolated to prevent ground loop noise. At higher volume levels and with non critical music that doesn't have soft passages, you may not notice the noise and hiss or hum produced by the BT. I have not run a freq response test through it though - that would be interesting.
 
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