I honestly can't see that a 1mm difference is cabinet thickness is much of a worry, but we like to get things right. 🙂
EXPERIENCE V 20
The project is downloadable as a .bpj projekte file:
https://boxsim-db.de/experience-v20/
That just goes in the projekte folder: Downloads
All looks good to me. It's actually a butterworth phase on the MTM section, which is very Joe D'Appolito, and gives good power response.
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If you are going to criticise something you should give a reason. Better still, fix the problem. Otherwise it's useless.
An exaggerated frequency response scale along with an overly detailed resoulution would probably make any speaker look awful. But I really don't see much wrong with this one. I couldn't improve it.
c.f. Troels Gravesen's Classic 3 way: SEAS-3-Way-Classic
Aside from doubling and halving of crossover values to allow for doubled drivers, it's scarcely different. It's a good design.
The Visaton drivers are pressed chassis, but not unlikeable. The G 25 FFL - 8 Ohm is scarcely different from the H0881-06 27TFFC.
An MTM design always get criticised for lobing, but that to me is a feature. It has a PA like projection and goes loud. The impedance is commendably flat, the phase is nicely 90 degrees, and I don't think a big 100Wpc Rotel amp will struggle with it. A fine design IMO.
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It's just a driver artifact on the W 130 S - 8 Ohm.
A FR peak at 1.3kHz. I had a better time modelling the 4" W100S-8, as it goes. But that won't go as loud. If you were going to hammer this speaker at parties, a 1A fuse on the tweeter circuit would make sense. Might protect the amplifier a bit in case the tweeter blows.
A FR peak at 1.3kHz. I had a better time modelling the 4" W100S-8, as it goes. But that won't go as loud. If you were going to hammer this speaker at parties, a 1A fuse on the tweeter circuit would make sense. Might protect the amplifier a bit in case the tweeter blows.
When placed in room there will be worse drops anyway.
But I would expect flatter response from speaker with 5 drivers.
Thank you all for your input. I will certainly assess the midrange when these are up and running.
Steve, your posts give me confidence in this project. PA like projection and the ability to go loud is a feature of MTM design that appeals to me greatly. Most of my listening will be either solo or with the family, but I will also be using these speakers at parties, some louder than others. I will on occasion be hammering them yes, not often but it will definitely happen, and so I appreciate the advice of adding the 1A fuse.
Steve, your posts give me confidence in this project. PA like projection and the ability to go loud is a feature of MTM design that appeals to me greatly. Most of my listening will be either solo or with the family, but I will also be using these speakers at parties, some louder than others. I will on occasion be hammering them yes, not often but it will definitely happen, and so I appreciate the advice of adding the 1A fuse.
I don't know dissipation factor for Visaton MKP, bit I'm sure that is few hundred times better than FE83EN THD..
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Not sure what you mean - I used it to swap same value caps to hear if there`s any difference (I didn`t believe in caps back then). I tried Mundorf (the white ones), Clarity Cap PX, Visaton MKP and Visaton MKT. I had those only at disposal, all 10uF.
I mean that you can't properly hear very small diference between MKP caps on that kind of driver.. slow and with huge distorsion..
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