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  1. #1
    Senior Hostboard Member GM's Avatar
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    Re: Broke down. Got a duplex.

    I know what you mean. There's some folks missing from the DIYaudio forums and I lost an entire family of friends (61-99 yrs old) among others, though thankfully none of my own.
    Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.

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    Broke down. Got a duplex.


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    Re: Broke down. Got a duplex.

    Waking up another old thread...

    Since Great Plains Audio is now long-gone, I feel like I can finally post this.
    Back in 2013, I drafted this schematic of their N604-8A network they used to sell.
    I purchased one and still use it to this day on my 604e. It's a nice-sounding network and well-built as you'd expect.
    I am really sad that no-one took over what Bill H was doing at GPA...

    54827891544 0c0ee755a2 z

    54827998010 931ab4f1fd z
    - Mike

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    Re: Broke down. Got a duplex.

    Hey Mike, thanks for posting the schematic of the GPA N604-8A. When I got my 604-8H-III’s over 11 years ago Bill included a pair of these crossovers. Upon receiving them I wondered why there was a wire removing L1 and C1 from the circuit. I called Bill and he said that they removed the wire and put a 33 ohm resistor in it’s place only for the 212-8A driver.

    I really like how they sound and never felt the need to try something different.

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    Broke down. Got a duplex.


    Altec Best's Avatar
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    Re: Broke down. Got a duplex.

    Mike they are still around.. Bill sold it and they moved back to the Los Angeles area. It is now called Great Plains Acoustics LLC. Prices are a bit crazy now. Wish I grabbed a bunch from Bill when his woofers were $240 ea. and the 604’s were $950ea. And left them in their boxes for a rainy day !

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