Shiva Convertible

[Hasse Queisser]

Tillverkaren hävdar att deras högtalare är swtchbar mellan att vara en point source låda och ett line-array. Låter lite för bra för att vara sant, men jag antar att det är teoretiskt möjligt med avancerad DSP-teknik.

Någon som har hört talas om dessa och kanske har lite mer info. Hemsidan lämnar en del övrigt att önska vad gäller teknisk info.

Shiva Convertible

[Per Johanson]

Well beamsteering är ju inte omöjligt men hur bra kompromissen blir skulle ju vara intressant att höra någon gång.

Om man nu vågar provlyssna en högtalare som heter som en blandning mellan en hinduistisk gud och en amerikansk bil...

Var hittar du allt?

[Hasse Queisser]

Jadu... var hittar man allt? Den här tror jag annonserades i PSN om jag inte minns helt fel.

Det intressanta med konstruktionen är ju att de säger att det är en coax, men på ett ställe kallar de den även för triaxial. Så dels verkar de ha lite svårt att bestämma sig, dels går inte coax och linjekälla ihop i min värld oavsett DSP och beamstearing. På ett annat ställe säger de att lådan innehåller en massa små element, hur det nu går ihop med att vara coax/triax?

Hmm... man kanske skulle maila dem om mer info för att stilla nyfikenheten.

[Hasse Queisser]

Svar på frågan om mer info besvarades raskt via mail av herrarna som tillverkar tingesten.



Shiva CFR 2410 Convertible May 2006

How does the Convertible work? – Technical Description

The Shiva CFR2410 Convertible loudspeaker system unifies 23 drivers in its ported enclosure. One CFR 2410 is driven three way active with power totalling up to 2kW.

Lower and middle frequency dispersion is controlled with APT Acoustic Pixel Technology.
This APT is represented by ten drivers in their respective configuration. Because of the longer wavelengths, the closely mounted drivers form together one coherent source with the desired dispersion.
The smaller wavelengths of the highs are radiated by two different specialized mid-to-high frequency systems.

The Shiva CFR 2410 can be switched to each dispersion mode, being it line or point, by interchanging the cable connecting box called TM Transfer Module mounted on the backside
of the loudspeaker.
Also the corresponding setup on the DSP-Controller must be activated.

There are ten direct radiating drivers with about 107mm diaphragm diameter covering the low- to mid-range of the frequency spectrum.
They work in different constellations for the two dispersion modes, creating a CPS coaxial point source or an SLA straight line array. *

For the mid-to-high frequencies there are two different systems for each mode.
The one for the point source is a compression driver with about 76mm diaphragm radiating into a oblate spheroidal constant coverage waveguide.
In the SLA line mode, there is an array of twelve high frequency drivers. These radiate through a proprietary waveguide having 24 horn mouths.

With the change of the TM connector box on the back, the ten low-mid drivers are regrouped electrically and geometrically, to form the desired dispersion pattern. Also, it switches over to the corresponding mid-to-high frequency system. The appropriate program on the digital speaker controller has to be chosen correspondingly, of course.

Each Shiva CFR 2410 comes fitted with two modules: One TMP for point source operation and one TML for the line. Changing the Transfer Modules and choosing the appropriate DSP-setup prepares the speakers to their work. Combined with a determined mechanical configuration of the speakers, their dispersion characteristic is changed fundamentally.

In the SLA line mode, Shiva recommends using at least five CFR 2410 to get excellent results. However, there are setups for a lesser number of elements which can bring very good results on certain circumstances, too.

* Sorry for the misleading term “triaxial” which appeared in some publications. The Shiva Convertible CFR 2410 is really three-way coaxial in its CPS coaxial point source operational mode.


Frekvensrespons

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