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-   -   Lowther Worden Panasona (http://www.diyaudio.com/forums/full-range/203099-lowther-worden-panasona.html)

David Pinnegar 24th December 2011 02:16 PM

Lowther Worden Panasona
 
Hi!

Someone came to see me a while ago bringing with them their pair of Worden Lowther speakers and unfortunately I did not retain their contact details. However the Worden was a very interesting and effective corner design. Has anyone got a photo?

The Worden was probably around 18 inches to 20" square and 2ft to 2ft6 tall and a very interesting design. The top was an enclosure open on 2 or 3 sides with a Lowther PM2C facing downwards. This allowed the rear of the cone to radiate omnidirectionally. The box below was divided diagnonally with a thin dividing strut dividing the sound from the front of the PM2C. The back half was a ported box whilst the other half was a triangular horn flairing out at the bottom.

The sound was slightly idiosyncratic but remarkably good for the size and took advantage of the excess treble of the PM2C, utilising only half and equalising that half with a horn to for the lower midrange.

It was an intriguing design which certainly brought music to life.

Best wishes and Season's Greetings,

David P

Puffin 24th December 2011 11:09 PM

Woden Design

David Pinnegar 25th December 2011 05:33 PM

Hi!

Thanks - but the Woden designs don't look like the Worden that I saw. Worden was particularly creative and it's for that reason that it would be great to see more pics of his designs.

Best wishes

David P

Puffin 25th December 2011 09:02 PM

Ahh yes the legendary Wilfred H Worden....errr...... who....?!

Sorry, I Googled and got the above (a famous boy pianist? - perhaps)

I am considering making the Big Fun Horn if I can get the plans.

http://i73.photobucket.com/albums/i2...x/bigfun-1.gif

divad 1st January 2012 05:47 AM

Wilfred Worden used to place small ads with pictures, in the back of The Gramophone through the '50s and '60s. The Gramophone has an online Archival Section, it should be possible to find them there.
In 1969 he had a range of speakers, the biggest being about 6-7 ft high, a front and rear loaded horn with PM6 or PM7 drivers, chosen according to the future owners request.
The smallest was a bookshelf speakers with Richard-Allan drive units. It had some unusual loading system for the driver.
His first product, though, in the 1950s, was an articulated pick up arm, made of wood.
In 1969 he was also looking at releasing an amplifier, and was developing a metal version of his pick up arm. I do not know if anything came of this, I was out of touch with the audio field for some years after this.

David Pinnegar 9th February 2012 12:04 AM

Quote:

Originally Posted by divad (Post 2841856)
In 1969 he had a range of speakers, the biggest being about 6-7 ft high, a front and rear loaded horn with PM6 or PM7 drivers, chosen according to the future owners request.

Hi!

It would be wonderful to see the big design.

I found a photo the other day of the speaker which I saw:
http://www.organmatters.co.uk/oddlowther.jpg
The unit fires downwards half into a chamber at the back and half forwards down a triangular section as shown with the wings coming forward to develop the horn at the front and an exponential profile at the back. Certainly an intriguing and original arrangement.

Best wishes

David P

Jon Ver Halen 9th February 2012 03:28 AM

Big Fun Horns
 
Quote:

Originally Posted by Puffin (Post 2834093)
Ahh yes the legendary Wilfred H Worden....errr...... who....?!

Sorry, I Googled and got the above (a famous boy pianist? - perhaps)

I am considering making the Big Fun Horn if I can get the plans.

http://i73.photobucket.com/albums/i2...x/bigfun-1.gif

e-mail directly for the plans. Jon at Lowther dash America dot com

Estelle 5th August 2013 10:46 AM

Hi,
We own the speakers you have seen and also a his unique pick up arm. Will send photos. We are possible interested in selling them if anybody is interested but will have to get a proper valuation.
Best wishes
Estelle

David Pinnegar 31st May 2015 04:45 PM

4 Attachment(s)
This week some friends in Surrey had a pair of Wordens of the 5ft high variety and kindly let me have them.

Worden's continue to fascinate - he was a nuts designer who had a fetish for reversing the unit into the cabinet rather than facing outward.

The larger speakers were apparently made with Wharfedale 10s in mind but mine were modified for a pair of Lowthers. Thes face forward into a divider-reflector - upwards into a helmholtz resonator with a slit vent on top. The lower direction faces into a horn facing downwards to the floor. The sound from the reverse of the unit is reflected on each side by the 45 degree reflectors from the corner whilst at top and bottom the sound is reflected by the concave shape of the horns. This means that the sound from the reverse of the speaker reflected from the exterior of the horn is in phase with that coming through the horn at floor level. The cuvature of the double horn shape to bottom and top means that the sound is projected forward and focussed at the centre of the speaker, the speaker producing a sweet spot vertical height of armchair listening position, whilst radiating laterally evenly.

Top treble relies on lateral transmission sideways from the reverse of the cone. With Lowthers and other twin cone speakers, there may be an element of transmission through the outer cone and a phaseplug may be helpful in sideways treble dispersion, particularly potentially a long cylindrical one.

Not having a spare pair of Lowther drive units to hand currently I've put in a pair of Audio Nirvana Super 8s and they sound very natural. OK - the Lowther TP1 of course sounds better - but the Worden's sound good and give music a lot of space.

Apparently they were advertised in the HiFi press in 1963.

Best wishes

David P

David Pinnegar 31st May 2015 06:29 PM

First listening proved good but coloured. This was noticed on a woman's voice, suggesting wavelengths of around 4ft and around 2ft - 2ft 6 being the distance from speaker to top of the cabinet, the upper chamber seemed to be likely to be the culprit.

With experience of the Lowther TP1 London/Imperator and placing acoustic absorption in the chamber at the start of the horn, I've placed some absorption, about 9 inches square on the upper reflector and going into the upper chamber. This stops reflections from the closed upper chamber reflecting back and coming out through the speaker.

The wide magnet of the Audio Nirvana prevents treble coming directly out and ensures that treble emerges sideways, towards the reflectors at sides and top and bottom, as intended.

The resulting sound is truly excellent. The cabinet cloth is the standard 60s acoustic cloth but with a muslin behind. Removal of the muslin has taken a layer of obscuration away from the treble. Being spoiled by listening TP1s I'm critical and whether a speaker annoys me is a severe test. The Worden's are not merely not annoying, but a true pleasure.

If anyone has the privilege to acquire a Worden Panosona, most certainly they won't disappoint.

Best wishes

David P


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