Philips AD 7063 ideas

[Mayuri]

Hello all,

I found a pair of old finnish-made speaker boxes from a thrift store, and a bit of inspection revealed that they had a full range unit with the typical philips octagonal frame in them. The size of the driver seemed to be around 6,5". For just 20€, I figured might as well take the plunge and see what they contain. I had my fingers crossed for AlNiCo driver 😀

An externally hosted image should be here but it was not working when we last tested it.

So I went home, opened them up, and yep, it's a Philips driver, the AD 7063/M4 (the 4 ohm version). It has a textile surround which seems to be intact and the drivers are in good condition, given the age. Ceramic magnet though. With bit of research, I found these parameters for the driver:

Philips AD7063 (picture of driver and other info)

Fms: ~ 64 Hz
Re: 7 Ohm
Qms: 2.50
Qes: 1.54
Qts: 0.95

So my question is, what to do with these drivers? I'm currently thinking of going for a Karlsonator, but unsure if a this high QTS driver would be a good match with one.

 

[vvxuan]

Try to my design, I am sure you will not disappoint.
http://www.diyaudio.com/forums/full-range/268460-some-samples-box-very-good-full-range-speaker.html

 

[IG81]

Best would be to measure the T/S parameters for your own units. It's fairly typical of Philips FR drivers to have a low-ish Qm value and end-up with a medium Qt in the neighbourhood of 0.5-0.7. Fs is usually low on the paper-surround units; I couldn't say for the fabric ones.

I used to have a similar driver, the AD7060, but these had corrugated paper surrounds, so our units may differ if only because of this. You can probably expect a high-frequency elevated plateau, like shown in the above posted response; most whizzered Philips FR drivers have this, so off-axis listening is usually recommended.

Short of T/S parameters, I suppose a sealed box between 20L-40L could be a fair guess, based on my experience. I suspect some kind of very large TQWT could also be fun for such drivers, but I never had the chance to try it on either AD7060 or AD9710.

Good luck!

 

[Joseph Crowe]

I would recommend you follow the same advice and measure the T/S yourself. They are very good drivers that hold their own even with modern fullrange drivers.
I've documented my project using the AD7060/M8.
Joseph Crowe's DIY Speaker Building Blog: Philips AD7060/M8 Continued..

This project resulted in some of the flattest bass I've heard, when setup in a small bedroom.

 

[DrBoar]

I built the midi trike voigtpipes using the Philips AD 3701M that seems to be similar. They sound really good those drivers have a nice balance and a natrual midrange.
Re=3.5 ohm Fs= 61 Hz Qts 0.588 Qes 0.68 Qms 4.33 Le 0.358mH (Woofer Tester II)

 

[Mayuri]

Try to my design, I am sure you will not disappoint.
http://www.diyaudio.com/forums/full-range/268460-some-samples-box-very-good-full-range-speaker.html

This is also a good option, I will definitively consider it.

Best would be to measure the T/S parameters for your own units. It's fairly typical of Philips FR drivers to have a low-ish Qm value and end-up with a medium Qt in the neighbourhood of 0.5-0.7. Fs is usually low on the paper-surround units; I couldn't say for the fabric ones.

I would recommend you follow the same advice and measure the T/S yourself. They are very good drivers that hold their own even with modern fullrange drivers.
I've documented my project using the AD7060/M8.
Joseph Crowe's DIY Speaker Building Blog: Philips AD7060/M8 Continued..

This project resulted in some of the flattest bass I've heard, when setup in a small bedroom.

Good ideas, I'll measure it probably on the weekend.

I built the midi trike voigtpipes using the Philips AD 3701M that seems to be similar. They sound really good those drivers have a nice balance and a natrual midrange.
Re=3.5 ohm Fs= 61 Hz Qts 0.588 Qes 0.68 Qms 4.33 Le 0.358mH (Woofer Tester II)

I have never heard of this kind of a enclosure. Do you have any further info?

 

[Xerxes75]

Hi,

I would build the cabinets recommended by Philips. You can find them in the folder "luidsprekerbehuizingen voor zelfbouw" (cabinets for DIY).

For the AD7060 there are the A9, A11 and A12 enclosures if you add an AD7065W you can build the A14 enclosure.

Raymond

 

[GM]

Thanks! Wow! A treasure trove for Philips lovers: Philips overige

GM

 

[Xerxes75]

That site is a great source on the Philips publishings..

I love the vintage Philips drivers..... I have the AD3701M, AD9710M (in a Voight pipe design), AD12100M, AD12202M (those are really special) and the very wonderful AD12200W.

So happy building!

 

[IG81]

Thanks for the link! I had never come across that one before, very neat and has some stuff I was missing.

 

[DrBoar]

Regarding Voigt pipes. There is a family of speakers that use a quarter wave resonance of a pipe closed at one end. The fundamental resonance gives increased radiation resistance/reduced cone motion just as a bass reflex or horn does. The problem is that you also get some unwanted harmonics the Voigt pipe uses some tricks of tapering the pipe and placement of driver to reduce those harmonics. I have some old alnico 10" double cone drivers that I think are Philips (stamped 7-69-AH 2422 256 41003)