Visaton AL170x2_DSM50FFL_MHT12

[Dr John]

https://www.diyaudio.com/forums/multi-way/339958-visaton-al200_al130m_ke25sc-post6236628.html

 

[Dr John]

..

 

[system7]

Very nice project, my friend. And nicely documented. 😎

I presume you simmed it in Visaton Boxsim? How do they sound?

 

[Lojzek]

Where did the national flag go?

Btw, very nicely looking cabinets. I used to make a design incorporating mht12, it was 2 decades ago.

 

[system7]

Are those drivers rebated or flush-mounted? Just interested, since rebates are beyond my woodworking skills.

 

[Dr John]

I presume you simmed it in Visaton Boxsim? How do they sound?

AL200_AL130M_KE25SC sounds bright and clean, but this one is little faster..

 

[Dr John]

I used to make a design incorporating mht12..

And..

 

[Dr John]

Are those drivers rebated or flush-mounted? Just interested, since rebates are beyond my woodworking skills.

I don’t have any woodworking skills, but mu carpenter does..

 

[markbakk]

Nice old skool design. Those Visatons still do fine. You chose steep flanks on that X-over. Did you measure the impedance?

 

[system7]

I simulated the impedance. The first 3 attached images.

If we remember Steen Duelund's theory of phase-aligned three ways...

Epitomised in Mr. Troels Gravesen's Scanspeak Discovery 3-way Classic, which he has now made an open project. Well done, Troels!

ScanSpeak-3W-Discovery

Troels has also released details of his approach 6" lively drivers. A fourth order circuit electrically:

SBAcoustics-61-NRXC

I wondered if I could simplify the circuit and go more Duelund. The last 3 attached images. I don't know if it is any better...but a fun afternoon simming. 😀

 

[Dr John]

You had attached boxsim files in first post link..
Final version have few minor changes..
I will try to post them tomorrow..

 

[markbakk]

I wonder why the filler driver is linked to Duelund, I thought Erik Baekgaard (B&O) published on this approach in 1977.

 

[Dr John]

Boxsim v.2.0 launched!!

 

[Dr John]

Teaser..

 

[Dr John]

The End Is Near

 

[55542]

Conditions of measurements?

 

[55542]

Gear used for measurement?
Thanks

 

[Dr John]

Conditions of measurements?

Very nice springtime, swallows are back.. I grabbed a few days off..

 

[Dr John]

Gear used for measurement?
Thanks

UMIK-1, REW, JLSounds XMOS/AK4493 DAC and one very fast amp..

 

[55542]

I would appreciate you telling me under the term "conditions" the position of the microphone in relation to the speaker, the distance from the floor and the first reflections. Do you use tripod or hand held style for microphone? Because not much can be seen in these measurements. Do you have gated measurements?
P.S Very good drivers.