Philips AD3800 in nice boxes, what are these? - Page 2 - diyAudio
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Old 28th August 2008, 03:29 PM   #11
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Welcome to planet insanity...

These 8ft Voigt pipes were using the 800ohm version. Not that I'm advocating the trad. type of VP. But interesting.
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Old 5th October 2009, 04:36 AM   #12
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Hallo,
a question for markanica it is possible to know number and dimension of the holes in the rear of the loudspeaker??
I am building boxes but I do not know the Thiele parameters for AD3800 so the original box could be a good starting point.
Thanks
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Old 5th October 2009, 03:52 PM   #13
pjanda1 is offline pjanda1  United States
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Wow, this is a blast from the past. I know the question wasn't for me, but the original box is NOT a good starting point: giant midbass hump, no lower bass. Truly Terrible. Besides, it's quite likely that the suspension is a little stiff and the magnet has lost some flux. Were I you, I'd either put it in an open baffle, or build a 50ish liter sealed box and stuff to suit. I've still got the boxes. If you really want to know, I can pull the back off of one and measure the port. I can't overstate how strongly I suggest trying something else though.

Paul
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Old 5th October 2009, 04:56 PM   #14
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Quote:
Originally Posted by pjanda1 View Post
giant midbass hump, no lower bass.
I agree with the above.
It's not so clear what the original designer had in mind with these...Maybe they fitted the small pentode tube amps of that time
If you want to put those matured speakers in a box than maybe it is good to measure the real TS-parameters as they are now.
Those old paper cones can be a real treat to the ears.
It is worth to try, me thinks..
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