Philips 9710 M/8 new enclosure help.

[Squeak]

You don't need a tweeter if you aim the driver up into a reflector.

[DrBoar]

Aging usually stiffens the suspension increasing Qes and Fr and lowering the Vas. This happened to my KEF B200 but my AD12100 are close to published data
Doctor Boar; DIY loudspeakers and HiFi

[picowallspeaker]

Any modern tweeter would work, no need to look at the 20 th century market.
I found the Audax TW 025 016 with titanium membrane being quite good for "ambience&detail" with just a 1 uF coupling cap and 3R3 resistor ( before the cap)
An extra waveguide expands the angle - tough it's not a constant directivity device

[soulsheiksan]

not sure how helpful this will be
i have experimented with the 9710 about 10 yrs ago and had fun and sold them to close friends
the best design was using martin kings website and designing a mltqwt i got superb bass and used a small zobel with a old wire wound jbl l pad, with a good opt you do not need any tweeter
Quarter Wavelength Loudspeaker Design

as you can see from my pic the baffle became 3 inch thick due to the port experimentation but i made the top interchangeable to try many 8 inch fr drivers
i miss that speaker sometimes

[Xerxes75]

Hi and thanks again, Nice site Dr. Boar.. and I will look into an modern day tweeter.

I think a reflector would become difficult, this said after a quick look around.

Hi Soulsheiksan, the speakers are now mounted in a TQWT, the reason of my question is if it possible to make smaller design. Your example looks good and I will look into the ML thing.

[Squeak]

Originally Posted by Xerxes75

I think a reflector would become difficult, this said after a quick look around.

Not at all. Get someone to hold a large book, open to about 90 degrees with the spine at an angle of about 45 above the driver to see how you like it.

The final reflector could be made of thick cardboard.

[soulsheiksan]

another design i still use with my lafayette sk98 which i love is called the tornado ,i tried it on the 9710 and it was pretty good, but those guys do like some ballroom
as for the vent i started with 1 inch and using the ear and applying felt in the pathway to make it thinner using fabric glue, its about 3/4 inch and now sounds great f3 about 45hz but decent i use a th sub below

[klauss00]

Can you give us more details about Toranodo with Lafayette sk 98?

[SinGun]

Just throw out my Alpair 10.3 (yuck - metallic sounding voices).

Put the 9710 in 40L BR with Gravesen filter and the fun came back to my home. So much better than the Alpair 10.3. I have the big Air-Motions and Vifa ringradiators but no need for a tweeter. They are just fun. Alpair 10.3 was torture, AD-9710 is pure fun. Paper is galaxies better than metal cones. Only exeption I know is the Visaton AL-130 and Alpair 6. They do sound very good.

But I think about TQWT. Any ideas or opinions regading this?

[SinGun]

I found this:
TUBE-MANIACS: Bauplan fur das TQWT Gehause fur den Philips 9710