Philips AD 8080/m4

Lohengrimas · 4th July 2016, 05:06 PM

Bought these pretty but not so hi-fi full rangers online, they came out of an almost unused stereo cabinet and are in good shape. Range is 75-18k hz., no T/S parameters given in the original literature.

Looking for fun builds/suggestions, so if you've build something with these fullrangers, please let me know! I'm not expecting these to offer earth-shattering performance over what I have now, so I might just go for something like an interesting omnidirectional concept.

I'm also mulling an "akoestische box A5" as it is called in the original Philips build plans. The 8080 is not mentioned as a recommended driver for this box (a tallish, square column, no ports), but the famous 9710 is; maybe I could just build the boxes and hope for a pair of 9710's to show up.

IMG_6070 by ctjr

IMG_6071 by ctjr, on Flickr

Gregje · 4th July 2016, 07:32 PM

Hi,

I used them in tqwp about 1.1 high (folded ie the pipe was longer; probably 1.8). The mouth was about 9x22cm. I liked them very much with a decaware zen clone. Maybe not very hifi but very charming and envolving. They had lots of presence with not too demanding music.

Gregje · 4th July 2016, 07:35 PM

Ps. Ad9710 is better. Goes lower. But has also its own bumps and dips.

planet10 · 4th July 2016, 07:51 PM

That driver is best on an OB. Here are measures for the one set of AD8080/8 i have in my spreadsheet (measured with Fuzz Measure)

dave

Lohengrimas · 5th July 2016, 08:48 AM

Quote:

Originally Posted by planet10

That driver is best on an OB. Here are measures for the one set of AD8080/8 i have in my spreadsheet (measured with Fuzz Measure)

dave

Great, thanks. I figured as much re the open baffles, but since I've sacrificed a lot of real estate already for a pair of open baffles, I don't think I can get away with another pair

planet10 · 5th July 2016, 05:16 PM

If not an OB then a box as large as you can and make it aperiodic.

dave

Mayuri · 6th July 2016, 08:47 PM

I also have a slightly newer pair from the same line, the 8082s. They indeed have a pretty weak magnet and thus high QTS. One possibility for them is an aperiodic box.

Also, sent you a PM concerning the 9710s.

Lohengrimas · 7th July 2016, 12:36 PM

Quote:

Originally Posted by planet10

If not an OB then a box as large as you can and make it aperiodic.

dave

Figuring I could do foldaways (as per the Philips handbook anyway), what size would I be looking at?

planet10 · 7th July 2016, 05:38 PM

foldaways?

dave

Lohengrimas · 7th July 2016, 05:44 PM

Quote:

Originally Posted by planet10

foldaways?

dave

the original philips manual suggests a flat, slightly trapezoid board with a kind of threstle-like back legs with hinges as support, so the whole shebang folds flat.

4th July 2016, 05:06 PM	#1
Lohengrimas diyAudio Member Join Date: Feb 2016 Location: 020	Philips AD 8080/m4 Bought these pretty but not so hi-fi full rangers online, they came out of an almost unused stereo cabinet and are in good shape. Range is 75-18k hz., no T/S parameters given in the original literature. Looking for fun builds/suggestions, so if you've build something with these fullrangers, please let me know! I'm not expecting these to offer earth-shattering performance over what I have now, so I might just go for something like an interesting omnidirectional concept. I'm also mulling an "akoestische box A5" as it is called in the original Philips build plans. The 8080 is not mentioned as a recommended driver for this box (a tallish, square column, no ports), but the famous 9710 is; maybe I could just build the boxes and hope for a pair of 9710's to show up. IMG_6070 by ctjr IMG_6071 by ctjr, on Flickr

5th July 2016, 05:16 PM	#6
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III	If not an OB then a box as large as you can and make it aperiodic. dave __________________ Stay safe. Stay home. Respect the 2m bubble.

7th July 2016, 05:38 PM	#9
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III	foldaways? dave __________________ Stay safe. Stay home. Respect the 2m bubble.

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4th July 2016, 07:32 PM	#2
Gregje diyAudio Member Join Date: Oct 2009 Location: London	Hi, I used them in tqwp about 1.1 high (folded ie the pipe was longer; probably 1.8). The mouth was about 9x22cm. I liked them very much with a decaware zen clone. Maybe not very hifi but very charming and envolving. They had lots of presence with not too demanding music.

4th July 2016, 07:35 PM	#3
Gregje diyAudio Member Join Date: Oct 2009 Location: London	Ps. Ad9710 is better. Goes lower. But has also its own bumps and dips.

6th July 2016, 08:47 PM	#7
Mayuri diyAudio Member Join Date: Mar 2009 Location: Finland	I also have a slightly newer pair from the same line, the 8082s. They indeed have a pretty weak magnet and thus high QTS. One possibility for them is an aperiodic box. Also, sent you a PM concerning the 9710s.