Well when it comes to actually listening tests the PHY baffle may be no better.
After doing all these measurements it has become bloody obvious that FR plots tell you nothing about how a speaker will sound.
They are useful for improving what you have, but that is about it.
After doing all these measurements it has become bloody obvious that FR plots tell you nothing about how a speaker will sound.
They are useful for improving what you have, but that is about it.
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I plan to build a similar cabinet for my AN15. I have the official drawings for this cabinet, it was originally for a different driver.
Given the published T/S parameters for the AN15 the proposed box looks quite reasonable - but I've only looked at it as a bass reflex. I think somebody with MJK's worksheets might want to look at as a 1/4 wave box instead, like the Hammer Dynamics, just to see how it looks.
I just repeated the hole-mod on the PHY baffle using the Seas FR.
It only had a slight smoothing effect nothing to get excited about.
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the day job has kept me away for the past while. And I'm waiting to see how well your OB turns out, maybe I don't need a box afterall.
I will pick up some 2' x 4' sheets of birch plywood in the next day or so so I can start something.
I'm liking the sound of the driver sat on the floor.
OK here it is.
It doesn't tell you what it sounds like but here is FR plot
It doesn't tell you what it sounds like but here is FR plot
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I will also repeat the response with woofer positioned near floor to get an idea of what a 1.5 way should look like once crossed over.
Then play around with inductors till I have it perfected
Then play around with inductors till I have it perfected
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How deep are the wings ?
Are they 24" (61cm) deep ?
Can you please give us the exact dimensions of the baffle and the center of the driver ?
Thanks for all your building and measuring............
Oh yea, and the phy OB closer to the wall, that should go flat to 100hz I bet !!!!!!!!!!
Norman
Are they 24" (61cm) deep ?
Can you please give us the exact dimensions of the baffle and the center of the driver ?
Thanks for all your building and measuring............
Oh yea, and the phy OB closer to the wall, that should go flat to 100hz I bet !!!!!!!!!!
Norman
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It is exactly the same dimensions as what was used for the Seas.
IE 40cm centre baffle width with 50cm wings. The centre of the driver is 95cm above the ground. The height of the baffle is 6 feet.
IE 40cm centre baffle width with 50cm wings. The centre of the driver is 95cm above the ground. The height of the baffle is 6 feet.
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I might turn this into a blog so all the measurements can easily be compared, but not many people look at blogs
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