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Indoors the sound would work okay without extra speakers.
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The picture quality is clear and the speakers produce great sound
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The sound is great when attached to amplified computer speakers when outdoors
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Bought this to upgrade my 420p projector, the speaker is great, it is clear and has a decent sound, if you prefer a sound you like larger speaker set up is best for movies outdoor
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Colors are nice and bright, I did not liked the audio output coming from projector speakers but I have connected external speakers which produce louder and crisp sound like movie theater