Supravox T215 RTF 64 vintage

[bumpy]

Can anyone give me a bit more info on these vintage (1960's) drivers. They almost certainly have alnico magnets, but most of the Google stuff refers to the bicone drivers with whizzer cone which I am trying to avoid.

I have to say the Supravox web site is very poor.

Thiele Small parameters would be a good start, or experience from anyone who has heard or used them would be a bonus.


https://i.ebayimg.com/images/g/wqkAAOSw6VRaAgkx/s-l1600.jpg

[walpurgis]

Interesting. Somewhat reminiscent of the Baker drivers.

[Sherwood]

http://rutcho.com/speaker_drivers/supravox_t215_rtf_64/supravox_t215_rtf_64.html

Surely this is a bicone with the whizzer missing!

Geoff

[bumpy]

http://rutcho.com/speaker_drivers/supravox_t215_rtf_64/supravox_t215_rtf_64.html

Surely this is a bicone with the whizzer missing!

Geoff

They made one model, with and without whizzer

[Sherwood]

Surely they would have different model numbers. At least a suffix!

Geoff

[bumpy]

Surely they would have different model numbers. At least a suffix!

Geoff

You would think so, but even today they market an RTF 215 64 which is very different, having the cheaper ferrite magnet. I am suspecting they are still dining out on the exceptional reputation of the earlier model.

https://www.supravox.fr/anglais/haut_parleurs/215_RTF.htm

https://www.supravox.fr/anglais/images/hp/215RTF.jpg

[bumpy]

I think I would defy anyone to cut off that sturdy whizzer and leave no evidence :) Particularly difficult working anywhere near those fine connecting wires.

http://rutcho.com/speaker_drivers/supravox_t215_rtf_64/images/supravox_t215_rtf_64_whizzer.jpg

[struth]

no, it looks original. ive a few with wizzers and they are impossible to remove without trace

[bumpy]

no, it looks original. ive a few with wizzers and they are impossible to remove without trace

"The whizzer cone is very thin and very stiff to a touch. From the picture can be seen that it is attached at the inner surface of the voice coil. The dust cap is common part of the whizzer."

With the dust cap being an integral part of the whizzer I would also think its impossible to remove without trace.

Many people specified and used the bi cone speaker with great success, but for me (having had Lowthers for many years) I think whizzers can come with their own issues.

[struth]

yup agree. some work and many dont so well. buzzing is a big issue

[walpurgis]

no, it looks original. ive a few with wizzers and they are impossible to remove without trace

I've done it a couple of times. Takes great care though.

[bumpy]

yup agree. some work and many dont so well. buzzing is a big issue

Would you tackle the Supravox one with the integral dust cap and 'mountain' of thick yellow glue?

[Marco]

Didn't this company also make headphones?

Marco.

[bumpy]

There was a company called Solavox that did headphones way back.

[Marco]

Could be that I'm getting it mixed up with :)

Marco.

[bumpy]

Well not much forthcoming on parameters or impressions.

I feel in experimental mood so I am going to challenge the Saba greencones in open baffles with the Supravox drivers. As far as I can tell they have similar TS figures and similar sensitivities. Both have alnico magnets, but the Supravox are much more substantial having aluminium chassis (mg?). Beneath the cap I suspect bigger magnets as well.

Let battle commence.

[bumpy]

Well the Supravox wins the photoshoot. :)

[Ali Tait]

Suspect these may be rather good. Supravox make some nice drivers.

[bumpy]

Suspect these may be rather good. Supravox make some nice drivers.

I hope so, but there will be two criteria. Firstly do they sound better than the Sabas and secondly can they be successfully integrated into my wonderful pair of open baffles based loosely on the Endorphin p17

[bumpy]

Interestingly the spacing of the fixing holes is just about identical. All this from a German and French manufacture and before the EU.

The Supravox is a bit chubbier so I may need to be a bit creative with mounting.

[henri]

Quote Originally Posted by Ali Tait View Post
Suspect these may be rather good. Supravox make some nice drivers.

These drivers ought to be ranked amongst the best fullrange drivers ever build ... They were used by Elipson in there spherical speakers and will stand comparison to 9710M made by philips and other similar drivers of the time.