Monitor system with Vifa ringradiator

[Merijn]

Hi all,

I have been thinking of using these speaker units for a WAF friendly monitor-sized loudspeakers. The cabinets will be something like Sonus Faber.

Vifa XT25TG30-04

http://www.d-s-t.com/vifa/data/xt25tg30-04a.htm

Vifa XT18WH09-08 or XT18WO09-08

http://www.d-s-t.com/vifa/data/xt18wh09-08a.htm

Does anybody know these units? Since I am farely new to designing filters, what do you propose to start with?

[LaMa]

The XT bass woofer is a quite new development, newtronics of germany is the only firm, which uses this driver with the XT ringradiator. (atleast which I know of)



I thought they are also delivering kits (not on the site) according to K&T. (germand diy magazine). Maybe our fellow german members can comment on that.

[indoubt]

I don't know the Vifa XT18WH09-08 or XT18WO09-08 but I do know the ringradiator

minimonitor

Good tweeter, very good at soundstaging and placement of instruments. Sound is less sweet than seas KT27F or alike.

There is a large post for this one on hifi.nl and it got very nice reviews in an hearing session for mini monitors amongst DIY builders.

They were actually build just for fun as I entered a DIY speakerbuilding contest. Got a little out of hand though as I originally planned to build pc speakers. In an older topic on GoT(gathering of tweakers) there is an DIY wedstrijd topic where you can see construction photographs

[PHilgeman]

I can assure you that driver sounds very very nice. Outstanding detail and clarity. I like it as much if not more than the Seas Mag cones. Also very easy to cross over.

-Paul

[Lusso5]

Polk Audio uses the ring in it's LSi7 ($700), and promotes it's use of it as one of the marketing tools for speaker.

Indoubt - what woofer are you using there with your minimonitor?

[indoubt]

A Peerless HDS 134 which looks astonishing alike the polk, except for the dustcap and the color

Ready


Because of the small volume (5 L net) I 've combined them with a small 8" active sub




edit: correct url

[Mos Fetish]

Gee, those Newtronics are classy looking speakers.

Is that an aperiodic vent I see?

Mos

[Variac]

Hey In Doubt,
Are you going to share your crossover with us?
Mark

[phase_accurate]

Is that an aperiodic vent I see?

A TML of constant cross-section.

Regards

Charles

[indoubt]

Variac, Here it is:



Series filter design and measurements are developed with the help of Geenius.

Replace the 3.3 ohm resostor wit a 2.2 ohm one (last tweak) and you're in business.

please note; it's a series filter, so if you place the filters outside of te box you'll have to bi-wire from the filter to the box. If you place the filter inside the box you cannot bi-wire

happy listening

edit: server down, will add schematic later