In the picture that is the rear...do you have a front picture too? Did you make the woofers fire through a couple of ports per woofer for a 10 to 1 compression or just have the whole the size of the Alphas?
I am looking to use a pair of the 15As per channel for my surround channels with a k510 horn on top of each speaker. Crossing over @500hz and most likely use a sub too.
Do you have anymore info you could share...like dimensions of the cabinets. I will be running REW for a active crossover.
Thank you.
Qts is 1.2
Hate to sound like a troll but they are = junk
Weakest magnet ever made for a 15"
Box would be huge bass would be weak.
Midbass at best, with highpass, cone breakup at the top end is horrendous.
Put it in a huge 1930 style radio box with deep sides and open back.
Expect bone crushing bass at about 85 Hz.
Something that would actually work with a LARGE baffle aka= a Wall.
Cut a hole in a wall and make the next room the enclosure.
For the cost of wood alone, be better off with a GRS 12SW-4HE
Hate to sound like a troll but they are = junk
Weakest magnet ever made for a 15"
Box would be huge bass would be weak.
Midbass at best, with highpass, cone breakup at the top end is horrendous.
Put it in a huge 1930 style radio box with deep sides and open back.
Expect bone crushing bass at about 85 Hz.
Something that would actually work with a LARGE baffle aka= a Wall.
Cut a hole in a wall and make the next room the enclosure.
For the cost of wood alone, be better off with a GRS 12SW-4HE
The front and rear of those speakers looked exactly the same. The M-frame is 100% open, front and back
@WhiteDragon there is no box... The drivers have a weak magnet, but this gives them a relatively high Qts that is perfect for partially offsetting the dipole losses. Xmax is only about 4.5mm but two of them gave enough Sd to make some decent bass in that configuration and they were only used up to about 200 Hz.
The 15A used to be very inexpensive, around $80 or so but I think they cost about double now.
So there are no ports...the woofer holes are the same size as a normal woofer being mounted, correct? I have 4 of the 15As, so Inam set on the speakers.
Thank you
Thank you
Looking at HALF SPACE measurements on a infinite baffle with no losses.
useable bandwidth starts at about 100 Hz so 200 Hz not a good ending point, it is the beginning point.
Hence why I mentioned use it in a large open back style radio cabinet.
Aka a H frame with deep or long sides. Below 200 Hz is non existent
It is a mid bass, well aware of using slow weak high Qts drivers for open baffle.
Problem is, it is overhung not underhung coil. no box, no control.
Use underhung guitar speakers, SQ will be about that of 1930's radio speakers.
Cone breakup starts around 500 Hz. So there is your bandwidth.
Midbass, 100 to 500 Hz
As I mentioned with glorious amounts of slow uncontrolled, dipole cancelling.
Expect about 85 Hz at the most in a H frame.
Could almost call me crazy since it dont do much more than 100 Hz in a half space.
yet alone Di Pole
Again mount it to the wall and EQ it. or H frame with losses and EQ it.
A 8" speaker in a box will make more bass, and will still be a mid bass, not a sub.
Another good option is a box truck, cut holes in the side and that should give you maybe
.9 Qtc sealed lol.
Problem with the no box theory, it has to be in the room cancelling, nobody accepts
mounting to a wall with infinite baffle, and the " open" " no box" magic is the next room
being a large enclosure. You have to be " in" the room cancelling to be " magical"
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