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Adire AVA250 Schematic Diagram (1 Viewer)

starguy

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Oct 9, 2018
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Gregory Furtman
A number of years ago I built a 142.5L subwoofer with a down-firing 12" Shiva driver, a 15" front passive radiator, and an AVA250 plate amplifier. It has served me well and sounds great!

Last week the AVA250 started buzzing. It has an auto-on circuit that when it detects a signal the amp turns on and when my Denon receiver is turned off the AVA250 is supposed to return to the off sleep mode. It's not doing that now.

I have looked online for a schematic for the AVA250 with no luck. Anyone here on the forum have a schematic or know where I can get one?

Also, my 12" Shiva has bottomed out too many times and is starting to bang when hitting bottom. Any suggestions on which subwoofer driver I should replace it with considering it is in a 142.5L box with a 15" radiator?

Thanks.
 

Robert_J

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Aug 22, 2000
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Robert
Why don't you ask Dan if he still has a schematic - https://www.danwiggins.net/

There is a Shiva on Ebay right now. The Eminence Lab 12 should work. Others recommend the Dayton Audio RSS315HF-4.

Did you post about this issue on another forum about 6 months ago? Both posts mention 142.5L enclosures. It's odd that 2 people would be so specific.
 

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