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[Peezlepop]

I'm putting together a small battery powered system. I have a 12V deep cycle battery, an inverter from Radio Shack (12V to 115V AC at 350W), and a Fishman SA 220 (line array amp). Everything is in good working order, and it works. It is however producing quite a buzz. I put a Furman power conditioner in between the inverter and amp with no change. Any ideas?  Thanks

[Chris Carpenter]

I'm putting together a small battery powered system. I have a 12V deep cycle battery, an inverter from Radio Shack (12V to 115V AC at 350W), and a Fishman SA 220 (line array amp). Everything is in good working order, and it works. It is however producing quite a buzz. I put a Furman power conditioner in between the inverter and amp with no change. Any ideas?  Thanks

It is quite possible that your inverter is producing a square wave rather than a pure sin wave. Why not just use one of the many available 12v PA amplifiers? Your loosing a lot of power to heat going DC>AC>DC.

Also, change your username to your real name per the board rules.

[Mark Chrysostom]

I would be more inclined to use a small generator, instead of a battery / inverter. As Chris said, all that converting is not very efficient.

Honda has some very compact and extremely quiet generators.

http://www.randmh.com/honda-portable-generator-701-100/generators/?cid=F81100&source=rangs

[Peezlepop]

Just trying out what I have. An experiment. I have another involving powered speakers a Mackie 1206 and a wagon to possibly tow in a wagon or a Labor Day Parade. I am trying to keep it simple. If I can solve the hideous buzz problem.... Sorry about the name thing.

[Mac Kerr]

Just trying out what I have. An experiment. I have another involving powered speakers a Mackie 1206 and a wagon to possibly tow in a wagon or a Labor Day Parade. I am trying to keep it simple. If I can solve the hideous buzz problem.... Sorry about the name thing.

Because of your displayed name your account accidentally got deleted in the morning sweep of deleting spammers. When you re-register do so under your real name so you can post in these forums.

Mac

[John Lackner]

You are probably using a modified sine wave inverter. Get rid of it! Guaranteed to cause the buzz. You need a PURE or TRUE sine wave inverter. there's plenty of people selling them on EBay. Samlex is a good brand.

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