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Old 17th April 2004, 11:59 PM   #1
phibes is offline phibes  Australia
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Default Visaton Vox 252-Performance?

I'm interested in using speakers by the German manufacturer, Visaton, and I'd appreciate any comments for or against these particular drivers. The design I would like to build is the Vox 252 using the KE 25 SC tweeter, AL 130 mids and the TIW 250 woofer. Anyone built and or using this speaker?

Cheers,
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Old 18th April 2004, 12:55 AM   #2
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Default Re: Visaton Vox 252-Performance?

Quote:
Originally posted by phibes
I'm interested in using speakers by the German manufacturer, Visaton, and I'd appreciate any comments for or against these particular drivers. The design I would like to build is the Vox 252 using the KE 25 SC tweeter, AL 130 mids and the TIW 250 woofer. Anyone built and or using this speaker?

We don't get much Visaton here, but i've had a opportunity to have used the B200 for the last couple months, and it is outstanding (ie a testimonial that they do build some excellent drivers)

dave
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Old 18th April 2004, 11:20 AM   #3
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Not used these drivers but a predecessor to TIW 250 from early 90s, white pulp cone and good chassis. These are used in large studio monitors in my workshop and are realy good, also seems indestructable. They used ro have an excelent ribbon tweeter too, dont remember the name, with both decent power handling and good eficiency, 92 dB.
Unfortunately there is no real agency for Visaton in Sweden anymore..
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Old 18th April 2004, 12:12 PM   #4
sreten is offline sreten  United Kingdom
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http://www.visaton.com/cgi/VisatonFr...Artikel_ID=607

Details can be found here.

sreten.
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Old 18th April 2004, 05:56 PM   #5
sreten is offline sreten  United Kingdom
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At 84dB / 4 ohm , i.e. real 81dB/W efficiency they will need lots
and lots of juice to get going, but at least bass should be good.

IMO they will be hopeless in a big room.

Smallish room and > 100W to drive them fine.

Small valve amplifiers are out of the question.

sreten.
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Old 18th April 2004, 06:00 PM   #6
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me and my friends are using several predecessors of the drivers you want to use. i can say that visaton drivers in general have an outstanding performance compared to theyr cost, at least in my opinion.
i've heard only the best about the tweeters KE 25 SC, the membrane is made out of ceramic, and they are used in many different speakers...
the ribbon tweeters mr.ahlberg mentioned are the RHT 13 AW , i think.
i gladly own a pair of them too, they are excelent, hard to get and nearly legendary in germany...
Build the Vox 252, you won't be disappointed !
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Old 18th April 2004, 07:39 PM   #7
phibes is offline phibes  Australia
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Thanks everyone for your comments regarding the Visaton Vox 252. These are not inexpensive speakers compared to the other design [Eros MkII] I've been looking at......so I have some decision making to do! The decision to make these speakers started out as something simple as a second system for our Rumpus room, however, my short list is now somewhat more hi-end than I originally envisaged.
Sreten, why do you think they will not perform in a large room? The room they will be in is 6m x 4.5m x2.5m, however, on one side it is open for approximately 70% of its length to a family room & kitchen area that measures 8.5m x 4.5m x 2.5m. If your observations are correct, they may not be a suitable choice. The Vox 252 design has the 10" bass driver firing from the outer side of each enclosure. My room arrangement will have the LHS enclosure's bass driver firing into the large family/kitchen area.
The amp I have for these speakers will not have a problem supplying the juice!
Cheers,


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Old 19th April 2004, 12:29 PM   #8
sreten is offline sreten  United Kingdom
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The Visatons nominal power handling indicates a 100w/8ohm
amplifier that doubles power into 4 ohms. the peak rating
indicates to me a 200W/8ohm amplifier maximum.

The Eros PL18 specifications indicate a similar rating.

However at 90dB/2.83V the Eros is 6dB louder than the 252 84dB/2.83V.

So peak levels will differ by 6dB which in a large room could
be very significant, depending on the levels you listen at.

With a smaller high quality amplifier the differences would be
much more important depending on the size of the room.

However the 252 lower sensitivity does promise better bass
extension performance than the Eros, though the PL18 units
are ideal for an overdamped bass reflex alignment.

All depends on what listening levels you use, and
is less important if you have plenty of juice on tap.

Generating good low bass levels in a room with your
total volume is not a trivial task to say the least.

sreten.
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Old 19th April 2004, 02:06 PM   #9
Rudy is offline Rudy  Belgium
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@ sreten

84dB @ 1W =/= 84dB @ 2.84V

as always visaton states there sound pressure ratings @ 1W

still its very very low, you'l need a BIG amp
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Old 19th April 2004, 02:18 PM   #10
sreten is offline sreten  United Kingdom
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Quote:
Originally posted by Rudy
@ sreten

84dB @ 1W =/= 84dB @ 2.84V

as always visaton states there sound pressure ratings @ 1W

still its very very low, you'l need a BIG amp
I can't see any evidence of this, its impossible to use actual SPL/W/M
due to impedance variations, all the design indications are that :

its 84dB/2.83V@1m for 4 ohms . i.e. 2W = 81dB/W@1m nominal.

The Eros is 90.5dB/2.83V@1m for 4 ohms = 87.5dB/W@1m nominal.

Only for 8 ohm speakers does dB/2.83V = dB/W.

If your amp can't handle 4 ohms well 81dB/W is very real.

sreten.
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