DIY Mid High Group Buy

Yeah doesn't bode to well especially if you had a particular timeline.. Well I was told by Jack that they will be shipping soon to me so I will work with that information, however i dont have any other specifics..

Stay tuned..
 
Mark Wilkinson said:
Thank you Peter, your experience is what we expect, yes?
Sad to say, I have a hard time believing that BMS corporate understands how difficult procurement can be in the US.....
Click to expand...

Hi All, sorry, I have been out sick and not been here for a while. Just came in to say thanks, as Jason got the drivers yesterday.

I'm guessing the BMS home office knows exactly how long this took, as they are the ones who shipped to Jason.
Have fun with the drivers.

Regards, Jack
 
Jack Arnott said:
Hi All, sorry, I have been out sick and not been here for a while. Just came in to say thanks, as Jason got the drivers yesterday.

I'm guessing the BMS home office knows exactly how long this took, as they are the ones who shipped to Jason.
Have fun with the drivers.

Regards, Jack
Click to expand...

Thank you Jack, sorry to hear you were sick...hope you are very well.
And sorry for any inference of responsibility for circumstances out of your control.
Best regards, Mark
 
Good day everyone, all drivers shipped out except for Dave. Awaiting for information on freight forwarder. Enjoy and be safe. May do this again depending on demand and availability. Thanks also to Jack Arnott for spearheading the effort and lastly for your patience..
 
Here's a shot of what mine went in :). 13512146_1743572295928806_9131403127161640252_n.jpg



rough measurement, 28.3 v, 10 meter groundplane, 2x16 ohm 12s, 1 8 ohm 4594nd. no eq. basic active crossover at 750hz, 18db/octave butterworth lopass, 24 db/octave butterworth hipass, .92ms of delay. equal voltage into both bands. passive crossover development is underway now. mantarray raw measurement 2.83v 1 meter on back 750hz xover 18-24db .94ms delay.jpg




and here is a link to a quick video of it. just basic camera mic, select 1080p for decent audio quality, but dont expect to be blown away.

[video]https://docs.google.com/open?id=0B1qLiLcP8hYlNkJ5clBLTFF3T1E[/video]
 
sean hennessey said:
Here's a shot of what mine went in :).



rough measurement, 28.3 v, 10 meter groundplane, 2x16 ohm 12s, 1 8 ohm 4594nd. no eq. basic active crossover at 750hz, 18db/octave butterworth lopass, 24 db/octave butterworth hipass, .92ms of delay. equal voltage into both bands. passive crossover development is underway now.




and here is a link to a quick video of it. just basic camera mic, select 1080p for decent audio quality, but dont expect to be blown away.

[video]https://docs.google.com/open?id=0B1qLiLcP8hYlNkJ5clBLTFF3T1E[/video]
Click to expand...

Very interesting Sean, how deep is the box? What 12's are you using?
 
sean hennessey said:
Here's a shot of what mine went in :).



rough measurement, 28.3 v, 10 meter groundplane, 2x16 ohm 12s, 1 8 ohm 4594nd. no eq. basic active crossover at 750hz, 18db/octave butterworth lopass, 24 db/octave butterworth hipass, .92ms of delay. equal voltage into both bands. passive crossover development is underway now.




and here is a link to a quick video of it. just basic camera mic, select 1080p for decent audio quality, but dont expect to be blown away.

[video]https://docs.google.com/open?id=0B1qLiLcP8hYlNkJ5clBLTFF3T1E[/video]
Click to expand...

Any chance of some drawing of the box or some sort of rundown on it. it looks very interesting....and I love DIY stuff:)
 
No drawings yet as its still under development, abd will be released as a rrtail product. A bit more shaping to the throat entry on the dual 12 horns to do, as well as experimentation with a couple different vtc fillers to try and smooth out the performance 4-600hz. The graph was shown with no smoothing though h
 
Last edited:
sean hennessey said:
Here's a shot of what mine went in :).



rough measurement, 28.3 v, 10 meter groundplane, 2x16 ohm 12s, 1 8 ohm 4594nd. no eq. basic active crossover at 750hz, 18db/octave butterworth lopass, 24 db/octave butterworth hipass, .92ms of delay. equal voltage into both bands. passive crossover development is underway now.
Click to expand...
Looks interesting Sean. It appears to roll off pretty steadily below 230hz. Are you using some sort of mid bass box to help blend with the sub better or do you run your sub x over higher? Just curious.
 
Don J Davis said:
Looks interesting Sean. It appears to roll off pretty steadily below 230hz. Are you using some sort of mid bass box to help blend with the sub better or do you run your sub x over higher? Just curious.
Click to expand...

Don, check out the video. Our midbass units can run 60hz to about 300hz if needed. A little more reduction in rear chamber size should get this down to 190-200hz.
 
I am 6+ months late to the party here, but would really like to build a set of PM90 speakers. Any chance that some BMS 4594HE drivers could be obtained at group buy price? My son and I built a set of xoc1 TH18 subs. Now we need some great tops (and then an additional set of subs from what I read).

Thanks,
Daryl Smith
 
Top Bottom