DIY multicell horn

[thevott]

Mirrophonic and Charles,
My 815s have front slots like a 210 but I made them closeable for experimentation. I'll try opening the backs and see how it sounds though I have no wings. If I wall mount the enclosures I will be infinitely baffling my drivers directly into the neighborhood. Of course, If I toss a couple of reverse-phased 511Bs out there It'll be a great block party!

[joejoe723]

Hi all,

Anyone tried added wings on A5 or A7(828 enclosure)? Do you think the sound is better?

[HiFiPlayer]

I have seen some Japanese add wings on A5 ,A7 from Japanese audio magazine. Anyway, wings would not affect the sounds get bad that I believed.

[GM]

>My 815s have front slots like a 210......

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Oh really?! Did you add them, or do you mean the 817, which has a smaller horn and vertical vents on each side?

http://www.lansingheritage.org/image...pro/page05.jpg

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>Anyone tried added wings on A5 or A7(828 enclosure)? Do you think the sound is better?

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Yes, but you have to extend them up to get the max benefit, like the original 800 VOTT, though I placed the horn in the baffle directly above the midbass horn since it was for a HIFI app.. Due to the wrong horn offset, you need to bi-amp and use electronic time delay to align them at the XO point.

http://www.lansingheritage.org/image.../800/page2.jpg

GM

[GM]

Been there, done that alot in my time. I wonder how many of the discarded 825s I chopped down into stage monitors are still being used by garage bands.

GM

[thevott]

GM,
My 815s have been severely modified: "Mr. skill saw, meet Mr. loudspeaker enclosure"..."Oh no, not the skill saw!! Ahhhhhhhhhh!!!.....Hey, that wasn't so bad, now I respond to 40 Hz...Cool"

[thevott]

Yeh, I did just the opposite. I took a pair of 'horn only' enclosures and expanded them into big vented enclosures. One of these days I'll put some proper drivers in the monsters and see what they're really capable of

[joejoe723]

Hi all,

Last week, i heard a pair A5 with original 828 cabinet(1005 horns, 288B drivers and 515B woofers). The sound is very strange, this A5 has midrange only. I have a look at both drivers and woofers, they both in mint condition. Is that A5 original sound?

[GM]

Yes, the 515 won't sound 'full' in such a large cab without significant series resistance, which of course lowers efficiency considerably. Best to seal off the horn section and add a 'sub' in the lower section of the cab.

GM

[joejoe723]

Hi GM,

How to add a "sub" in the lower section?