Open baffle with several Philips AD4681 fullrange - diyAudio
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Old 6th March 2011, 03:19 PM   #1
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Default Open baffle with several Philips AD4681 fullrange

Just found 14 nice Philips fullrange speakers: they are new and still sealed. Produced in 1972, 14x9 cm diameter, specs:
imp: 8 / 140-12.000 hz

I would like to make some narrow and high open baffles (maybe U or H frame) with 7 of them for every baffle.

Any suggestions?
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Old 6th March 2011, 04:10 PM   #2
oublie is offline oublie  United Kingdom
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have a look at this

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you'll need a woofer of some description as they are high q but high fs. I would suggest that you may get major combing due to the size however, you could run one full range and low pass the rest. There are two vaiants the m and the x - the m runs to 20khz. If they are anything like my ad 8080's then they do sound ok but the highs are very high! Wire them up without any baffle and see what you think.
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Old 6th March 2011, 07:27 PM   #3
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Thank you for your reply. Mine are the X variant.

I've also found a couple of these, Z variant

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it seems that they have a limited frequency range (up to 5,500 Hz) maybe I could use them as woofers?
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Old 6th March 2011, 11:14 PM   #4
oublie is offline oublie  United Kingdom
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thats probably a good thing if you use them with a tweeter they may make decent mids. As for use as a woofer i don't think that would be viable as they tend to have low xmax although good spl/w . Mine have a very high qts so good for open baffle so i would suggest using them as mids with a line of tweeters or if you can find one m series for use per side you could wire them series parallel with the m series one running full range for tweeter duties. (hope this makes sense)
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