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Old 5th April 2014, 06:37 PM   #1
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Default Low power efficient amp for small low end speaker

I am building a small audio system for my sailboat. Efficiency is important given all her systems run on the two 12v deep cycle batteries. Presently I have speakers powered by a tripath LP2020A amplifier which works quite well but the system is deeply lacking in low-end range. I would like to add a small (probably 8" or 6x9" sealed) subwoofer and power it with a small (possibly mono) amplifier. Does anyone have suggestions for an economical yet efficient amp for such a purpose? Ideally she would take 3.5mm input as that is how the rest of my system is wired (she recieves input from a record player and from digital devices such as ipods and computers). I'm not looking for anything to shake the boat, just fill out the low end frequency range.

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Old 5th April 2014, 09:00 PM   #2
sreten is offline sreten  United Kingdom
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Location: Brighton UK

Lots of salient details are missing given the myriad
of possibilities of what your trying to do on a boat.

What are the L&R speakers ? Interior ? Exterior ?

rgds, sreten.
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Old 6th April 2014, 05:26 PM   #3
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Location: WV
I like these things. BASS600 | Boss Audio Systems

Other than that, MCM and similar places have kits you can buy. Low power chip amps,etc.
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Old 10th April 2014, 07:17 PM   #4
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Originally Posted by xluke View Post
. . . sailboat. Efficiency is important given all her systems run on the two 12v deep cycle batteries.. . . I would like to add a . . . subwoofer. . .
You need a Class D amplifier to run your subwoofer efficiently and at least a 10" woofer with at least 96db efficiency. Look up the Boominator project for something efficient. Also consider increasing the solar power for the boat.
See also the Class D forum: http://www.diyaudio.com/forums/class-d/
See also high efficiency woofers: http://www.parts-express.com/cat/woo...e|0&PortalID=1
DIY Models & AppsClipNipperLM1875TDA7293Powerful Parallel TDA7293 kit ♦ My post has opinion.

Last edited by danielwritesbac; 10th April 2014 at 07:23 PM.
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