Visaton AL130_G20SC

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#41
Where can find specific information on the impedance curve of the Visaton G20SC?

The curve shown at the Visaton website shows a FLAT 6 ohm curve all the way to 20KHz. It is unrealistic.

An externally hosted image should be here but it was not working when we last tested it.


The impedance curve of the VIB130TL impedance by MONDOGENERATOR shows a more typical rise to about 15 ohms at 20KHz.

I will like to see the raw curve without compensation.

Anywhere I can find the FRD and ZMA files of the Visaton G20SC?
 
#42
system7 said:
I quote it since we are turning the page.

From experience, I don't mind complex crossovers at all. 4th order tweeter filters sound excellent if you accept the 24dB/octave LR4 sound. vulejov has done a meticulous job here. Sure they are harder to fit in a small space and cost more money usually, but think of a fourth order as a DISTRIBUTED filter and it makes sense. Instead of a single 2.2mh coil and capacitor, the bass uses two smaller coils and two smaller capacitors and gets steeper. Why should that sound worse? In fact it sounds better IMO.

The only real reason to use simple filters is COST IMO. Not quality. And a metal driver is an awkward thing at the best of times. It needs steep to tame the ringing. Try 12dB/octave LR2 with drivers with less issues. 😎
Click to expand...

vulejov did a wonderful job here. I agree with what System7 said here.

It is possible to use simpler crossover if the woofer is paper cone and the tweeter can go much lower. vulejov optimized the network for the drivers he has chosen.
 
#43
keilau said:
It is possible to use simpler crossover if the woofer is paper cone and the tweeter can go much lower. Vulejov optimized the network for the drivers he has chosen.
Click to expand...
Thank you..
keilau said:
Where can find specific information on the impedance curve of the Visaton G20SC?
Click to expand...
 

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#46
Visaton G20SC toxic?

MCM Electronics (US) carries the Visaton G20SC. But they classified it as toxic material and want $15.99 for shipping. It is 3 times more than a typical tweeter's shipment.

Anyone knows the reason of this toxic label?
 
#47
"toxic material" can only be for the older solder types not being Lead-free solder, and Restriction of Hazardous Substances Directive (RoHS) that only applies for manufacturers. So it's stupid. (But) Maybe it's something different and I don't know why.
https://en.wikipedia.org/wiki/Solder

Where can I find the FRD and ZMA files in Boxsim?
There's a section for each driver when you click and can be updated for your drivers/measurements. Have fun.
 
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