Ha. Keep us posted!
Ha. Keep us posted!
DIY Array, 2242 sub, 4408, 4208, Control 8SR, E120 Guitar cab, Control 1, LSR305.
So you are going to build a passive M2?
That together with Mr Widget's cabinet design, JBL consumer will have some inspiration to draw from you guys![]()
That should be a fantastic system Rob!!
I am still waiting on my 2216's but my horns came!!
I am going down your path as well with my 476Mg's. I do however plan to use a DSP with my levinson 331 and 333 for the top and bottom.
What will you power yours with? Will you do DSP or just passive?
Your projects always turn out nice so this is exciting to see!!![]()
Always fun learning more.......
Hello guys been a while. The plan is to try a passive version see what happens. It's a no brainer that the DSP route is really the way to go as it's a done deal. I am really curious about how the horn/waveguide will measure with the 435Be and the 476Mg. As far as the cabinet same volume not sure on the tuning and the look will be different. This is going to be an evolving project so nothing is written in stone. It will be fun to do no matter what the outcome. I can always fall back to turnkey if I can't get it to work.
With any luck I can post some raw measurements soon and the impedance curve on the waveguide. Going to be a real PITA to mount the 476mg. I modified the plates to take #10 flatheads and put helicoils in the waveguides so I can play with the plates and not wear out the threads.
Rob![]()
"I could be arguing in my spare time"
you read my mindput helicoils in the waveguideslooking forward to measurements.
Just did a quick point and shot to see what the M2 measures like with a 2435Be. Well I will be damned I was able to take an existing nework simulation with a crossover for the PTH1010 and tweeked it a bit. It isn't perfect notch at 2.5K but I am delighted how similar the raw measurements were between the 2 waveguides. I find this really encoraging can't wait to try a 476Mg
First one is on the M2 second is on the PTH1010.
The Clio is raw the red is the M2.
Rob![]()
"I could be arguing in my spare time"
Interesting!
So same "problem" with the phasing plug and horn throat interaction in the UHF.
Maybe you could try adding a little tube like in the the 2432, using something like a 1" MDF plate?
Hello pos
If you overlay them it seems to be a bit better. Green is the M2.
Rob![]()
"I could be arguing in my spare time"
Hey Guys
Well just tried out the 476Mg on the waveguide and all had to do was tweak the existing network and it looks good. Ignore the chop up front just did a quick measurement to get an idea. Dialed right in after about 30 minutes playing in LEAP. Had to play with the series notch and change the parallel notches Q and Frequency.
Rob![]()
"I could be arguing in my spare time"
Hello Ivica
Here is a revised measurement and a copy of the schematic. Just understand this is preliminary it is likely to change once I get everything in cabinets and the try to get the transition to the woofer right. For information here you go. Has anyone measure a 2452 on this waveguide? My thinking is it should dial in very nicely. If I remember it has a similar raw curve as the 476Mg. Have to just love this driver it just goes all the way out I am getting usable response out past 20K!
"I could be arguing in my spare time"
That's impressive Rob!!
Should make a fantastic system!!![]()
Always fun learning more.......
Hi Rob,
Many thanks for the detailed presentation of M2 & 476Mg driver, with passive network applied.
Seems to me that driver response compensation is not so difficult as can be expected if we are looking active network compensation of M2 & D2430K.
Interesting that some 'periodic' holes in the FR,
http://www.audioheritage.org/vbullet...l=1#post373896
http://www.audioheritage.org/vbullet...l=1#post375970
[ we have seen here on AH forums starting around 2.8kHz, 5,7.kHz, around 9,....kHz]
of M2 & 2450-1.5Be(Trex) is not present here on your measurements.
regards
ivica
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