Hi, i'm using Mi Box 3 and connect to my old Altec Lansing FX5051 in stereo mode via stereo jack..

I know my speaker is still good in sound when i'm using it to my my PC.. the bass kick, explosion sound etc really superb

but when i connect it to my Mi Box its sound dull, like under power.. High and mid range i think ok, but low range really under power.. it also not really loud, already turn the volume knob already at the end, and need to turn up the volume at mibox volume also so so...

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Speaker Specifications

Configuration: 5.1

Total Power: 89 Watts RMS

Satellite RMS Power /ea: Front Speakers: 12 Watts/channel @ 4 ohms @ 10% THD @ 150 Hz - 20 kHz 2 Channels Loaded

Rear Speakers: 12 Watts/channel @ 4 ohms @ 10% THD @ 150 Hz - 20 kHz 2 Channels Loaded

Center Speaker: 13 Watts @ 4 ohms

Subwoofer RMS Power: 28 Watts

Driver: One 40mm midrange driver and one 18mm high-end tweeter - per Satellite

Two 6.5" long-throw woofers in isobaric configuration - subwoofer

Frequency Response: 30Hz - 20KHz

Signal to Noise Ratio(SNR): >75dB

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Is there any amp can i use to power this speaker?