"BERTANGANI' have any one heard about this

Akrambash · 1st April 2010, 08:34 PM

'BERTANGANI' . That was the name on the speaker if I remember it right!. It was more than 15 years ago when i was a teenager I saw this loudspeaker at a schoolmates place.At first sight any one can mistake it for a planar or ribbon.But when the grill cloth was removed it was nothing but an acoustic board with some sort of transducer attached to it from the back.The transducer resembled something like a driver unit of a PA horn.It sounded very good with a good midrange and low freq was limited.Does any one have any information about what type of loudspeaker was this and how it works and if it is possible to make such unit. Thanks in advance

Steve Dunlap · 2nd April 2010, 03:53 PM

If you spell it correctly you can find out more with Google.

BERTAGNI speakers - Google Search

bear · 2nd April 2010, 04:15 PM

Yeah you could make one, but why?

Better off building a good ESL or a ribbon...

Imo.

_-_-bear

Also read up about the NEXT speaker... similar in some regards, but different too.

LineArray · 2nd April 2010, 05:17 PM

Quote:

Originally Posted by Akrambash

...
Does any one have any information about what type of loudspeaker was this and how it works and if it is possible to make such unit. Thanks in advance
...

This thread is about related stuff:

PIEZO NXT type panel

Zero Cool · 2nd April 2010, 06:25 PM

Styrofoam speaker panel with voice coils glued directly to the styrofoam....good for about 10 watts after which the styrofoam melted and the speakers were shot. terrible things. this guy is still trying to sell this crap now as paging speakers for offices. but the sensitivity is SO low that they are useless.

Companies now are making transducers that work the same way but you can attach them to pictures etc....

freddi · 07:12 PM

here's what I bought ~1968 "Polyplanar" - high qts, an obnoxious peak from an aluminum foil center dome. This Lafayette entry is side and rear view. Its front IIRC had a couple of concentric de-coupling rings

LineArray · 3rd April 2010, 11:06 AM

Hello Freddi,

those seem to be conceptually close to NXT's
"balanced mode radiatior" but 30 Years earlier ...

Are those in good shape ?

Can you describe your sonic impression ?

And if you like to tell, where did you get them ?

Kind Regards

Zero Cool · 3rd April 2010, 12:50 PM

20 watts PEAK!!!! PEAK! mind you! and they don't tell you the sensitivity!

Back in the early 1980's the local SHAACK electronics store sold these. people thought they were cool because they were so thin. they bought them, took them home, had a party and they speakers lasted about halfway through the first song and that was it....no more party and a sad owner!

Luckily, I had a friend that worked at the store and warned me of such issue...I saved my pennies

LineArray · 3rd April 2010, 02:37 PM

Seems like the store did not sell the subwoofers and the crossovers
needed ...

1st April 2010, 08:34 PM	#1
Akrambash diyAudio Member Join Date: Nov 2008 Location: Chennai	"BERTANGANI' have any one heard about this 'BERTANGANI' . That was the name on the speaker if I remember it right!. It was more than 15 years ago when i was a teenager I saw this loudspeaker at a schoolmates place.At first sight any one can mistake it for a planar or ribbon.But when the grill cloth was removed it was nothing but an acoustic board with some sort of transducer attached to it from the back.The transducer resembled something like a driver unit of a PA horn.It sounded very good with a good midrange and low freq was limited.Does any one have any information about what type of loudspeaker was this and how it works and if it is possible to make such unit. Thanks in advance

2nd April 2010, 04:15 PM	#3
bear diyAudio Member Join Date: Apr 2002 Location: New York State USA	Yeah you could make one, but why? Better off building a good ESL or a ribbon... Imo. _-_-bear Also read up about the NEXT speaker... similar in some regards, but different too. __________________ _-_-bear http://www.bearlabs.com ...ur feeback please - like/dislike my what I have written? PM/email tnx. --

2nd April 2010, 07:10 PM	#6
freddi diyAudio Member Join Date: Aug 2005	here's what I bought ~1968 "Polyplanar" - high qts, an obnoxious peak from an aluminum foil center dome. This Lafayette entry is side and rear view. Its front IIRC had a couple of concentric de-coupling rings Last edited by freddi; 2nd April 2010 at 07:12 PM.

3rd April 2010, 11:06 AM	#7
LineArray diyAudio Member Join Date: Mar 2008	Hello Freddi, those seem to be conceptually close to NXT's "balanced mode radiatior" but 30 Years earlier ... Are those in good shape ? Can you describe your sonic impression ? And if you like to tell, where did you get them ? Kind Regards __________________ Oliver, RFZ believer (?) www.dipol-audio.de

3rd April 2010, 02:37 PM	#9
LineArray diyAudio Member Join Date: Mar 2008	Seems like the store did not sell the subwoofers and the crossovers needed ... __________________ Oliver, RFZ believer (?) www.dipol-audio.de


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2nd April 2010, 03:53 PM	#2
Steve Dunlap diyAudio Member Join Date: Sep 2008 Location: Here	If you spell it correctly you can find out more with Google. BERTAGNI speakers - Google Search

2nd April 2010, 06:25 PM	#5
Zero Cool Audio Junkie diyAudio Member Join Date: Sep 2004 Location: MN	Styrofoam speaker panel with voice coils glued directly to the styrofoam....good for about 10 watts after which the styrofoam melted and the speakers were shot. terrible things. this guy is still trying to sell this crap now as paging speakers for offices. but the sensitivity is SO low that they are useless. Companies now are making transducers that work the same way but you can attach them to pictures etc....

3rd April 2010, 12:50 PM	#8
Zero Cool Audio Junkie diyAudio Member Join Date: Sep 2004 Location: MN	20 watts PEAK!!!! PEAK! mind you! and they don't tell you the sensitivity! Back in the early 1980's the local SHAACK electronics store sold these. people thought they were cool because they were so thin. they bought them, took them home, had a party and they speakers lasted about halfway through the first song and that was it....no more party and a sad owner! Luckily, I had a friend that worked at the store and warned me of such issue...I saved my pennies

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