I had this subwoofer set in WinSD for a while.
In the process of building a 9.2 C/f box for it.
Went back to try and review the port sizes and options and I some how messed up the paraments in winSD.
its telling me i need an 11,000 c/f box now..
can anyone put this sub in correctly and maybe share the file or screen shot for me.
No idea what is messed up and tried to add it again. and it's still not getting me set right.
thanks in advance.
In the process of building a 9.2 C/f box for it.
Went back to try and review the port sizes and options and I some how messed up the paraments in winSD.
its telling me i need an 11,000 c/f box now..
can anyone put this sub in correctly and maybe share the file or screen shot for me.
No idea what is messed up and tried to add it again. and it's still not getting me set right.
thanks in advance.
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Hi,
Most of those TSP's are in metric units and I see you seem to work in imperial, so it's probably a conversion issue.
Making sure all the units in WinISD are set to match your source info will usually sort this out (OK, that's just the nice way of saying "learn metric" I guess 😉 )
Screenshot should show how it should all go in I think.
Good luck,
David.
Edit PS: Also, try to follow the recommended sequence for entering driver data if you're not already doing that - WinISD will happily calculate derived parameters from the more fundamental electro-mechanical ones which may also help reduce the chance of a glitch.
Most of those TSP's are in metric units and I see you seem to work in imperial, so it's probably a conversion issue.
Making sure all the units in WinISD are set to match your source info will usually sort this out (OK, that's just the nice way of saying "learn metric" I guess 😉 )
Screenshot should show how it should all go in I think.
Good luck,
David.
Edit PS: Also, try to follow the recommended sequence for entering driver data if you're not already doing that - WinISD will happily calculate derived parameters from the more fundamental electro-mechanical ones which may also help reduce the chance of a glitch.
Attachments
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9.2cu ft (260.5L) for a ported tuned to 20Hz should be good btw. i think you did like said above, entered it in imperial while the specs are set in metric. I got a reasonable flat response as far as you can get that from a driver with such a high qts. But the peak is only 1dB, so that is not bad up there.
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T/S max flat:
20*86.58*0.64^3.3 = ~397.05 L/~14.02 ft^3
0.42*30*0.64^-0.96 = ~19.34 Hz Fb
Classic reflex = ~397.05 L/1.44 = ~275.73 L/~9.74 ft^3
Fb = Fs = 30 Hz Fb
Bessel alignment:
Vb = 8.0707*86.58*0.64^2.5848 = ~220.47 L/~7.79 ft^3
Fb = 0.3352*30*0.64'^-0.9549 = ~15.4 Hz
So any alignment in between these three should be fine if specs aren't too far off published.
Thank you so much . going to try these later.
I assumed it was a measurement issue to give me these numbers. I continued to tripple check that the digits were correct to no avail.
Never knew there was a recommended sequence. I just went down the list.
Will be plenty in my "margin of error".
Just looking for some nice boom for the home theater.
I have a sealed 15 and its great for music.
Sounds clear and tight.
But really missing the BOOM and shake of something moving more air
Hoping 500 watts through this DVC 15 at 2 ohms should make me happy.
And get me the "Feeling" i want to feel from explosions and effects.
Not just the sound.
If you have that up still could you share what "Vents" it reccomended.
Most likely going with 2 rounds for symetry.
Soooo far over my head its not even funny. :-D
" I lyke baig speekars that goo boom durin teh moveie!!! "
looking at a simple front ported box around 18 deep 2 wide and height to give me 9.2 ft^3. I think it ended up at 30 or 32 tall.
Working on dual front round ports now. Trying to tune it flat to WinSD parameters and apply 500 watts. Should wake the dead. The sealed 15 i built before this sure does. Just missing that air movement feeling from a bit ported sub to go with it. And give me some more extension.
That's near enough to the 'classic' 9.74 ft^3/30 Hz Fb, so 9.2 ft^3 is a good size for 'boom-boom'. 😉
That said, 9.2 ft^3 tuned to 20 Hz:
Hornresp sims only 170 W needed to hit Xmax below 30 Hz [max 110 dB/m/2pi], so [2] 5" dia. vents x 22.26" long is 20 m/s.
That said, 9.2 ft^3 tuned to 20 Hz:
Hornresp sims only 170 W needed to hit Xmax below 30 Hz [max 110 dB/m/2pi], so [2] 5" dia. vents x 22.26" long is 20 m/s.
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Appreciate the response GM.
I like my vintage solid stuff.
Subwoofer here
Old School 12" Diamond Audio Cm3 12d2 Dual 2 Ohm for sale online | eBay
Vintage Diamond Audio Cm315d2 15” Subwoofer Dual 2 Ohm Vintage Subwoofer
amp is a Sonance Subwoofer cinema
140W RMS x 2 @2ohm.
assuming 220 max x 2 at 2 ohm.
Fronts all running on Marantz MA70's.
other sub is a MB quart refererence 15 DVC 2 ohm RWE352.
powered from a sonance 260x3 am 2 channels only 2 ohms per channel.
I like my vintage solid stuff.
Subwoofer here
Old School 12" Diamond Audio Cm3 12d2 Dual 2 Ohm for sale online | eBay
Vintage Diamond Audio Cm315d2 15” Subwoofer Dual 2 Ohm Vintage Subwoofer
amp is a Sonance Subwoofer cinema
140W RMS x 2 @2ohm.
assuming 220 max x 2 at 2 ohm.
Fronts all running on Marantz MA70's.
other sub is a MB quart refererence 15 DVC 2 ohm RWE352.
powered from a sonance 260x3 am 2 channels only 2 ohms per channel.
You're welcome!
I'm a little confused in that wondering which 15" driver has the specs posted earlier and if it's the Diamond D315D2.2, then are they measured because the published ones are audibly different, though sim better in your 9.2 ft^3 cab: https://pdf.crutchfieldonline.com/ImageBank/v20110607144800/Manuals/114/114D310D22.PDF
I'm a little confused in that wondering which 15" driver has the specs posted earlier and if it's the Diamond D315D2.2, then are they measured because the published ones are audibly different, though sim better in your 9.2 ft^3 cab: https://pdf.crutchfieldonline.com/ImageBank/v20110607144800/Manuals/114/114D310D22.PDF
The model you found is a D3. Model
I am working with a vintage model cm3. Vintage mid 90s. I found it on eBay listed as a vintage subwoofer. But has never been used. The model lineup has changed it looks like. If you want to look it up it is a Diamond Audio cm3 15in subwoofer dual 2 ohm voice coil
I am working with a vintage model cm3. Vintage mid 90s. I found it on eBay listed as a vintage subwoofer. But has never been used. The model lineup has changed it looks like. If you want to look it up it is a Diamond Audio cm3 15in subwoofer dual 2 ohm voice coil
Had no luck nor could find any info on how much the DM3 differed, so combined with your specs' unrealistically small 790 cm^2 [Sd], whereas the DM3 specs are more like I expect to see had me 'scratching my head'.
Bottom line, without measuring one's own drivers, designing cabs is all a 'crap shoot'.
Bottom line, without measuring one's own drivers, designing cabs is all a 'crap shoot'.
Ported application is possible
Seems to be more mechanically designed for a sealed box.
In order to keep the response to behave in a ported application
it needs to be tuned low around 18/20 Hz
which is nice of course.
of course assuming using a high pass/subsonic filter
to protect from over excursion
being more mechanically suited for sealed
I think you would get the punch and rumble you would want for theater
in a simple 3 to 5 cubic foot enclosure.
Otherwise yes in a model the response appears better with a larger box
for ported around 9 cubic feet.
Which is a very large box in the theatre room.
With 20 hz tuning it wont sound much different in 7 cubic feet.
I would assume for " car audio" application the manufacture would have likely recommended something in the 3 to 4 cubic foot range = Sealed
So something for theatre would be simple around 4 to 5 cubic feet sealed.
be more controlled and wont unload.
Seems to be more mechanically designed for a sealed box.
In order to keep the response to behave in a ported application
it needs to be tuned low around 18/20 Hz
which is nice of course.
of course assuming using a high pass/subsonic filter
to protect from over excursion
being more mechanically suited for sealed
I think you would get the punch and rumble you would want for theater
in a simple 3 to 5 cubic foot enclosure.
Otherwise yes in a model the response appears better with a larger box
for ported around 9 cubic feet.
Which is a very large box in the theatre room.
With 20 hz tuning it wont sound much different in 7 cubic feet.
I would assume for " car audio" application the manufacture would have likely recommended something in the 3 to 4 cubic foot range = Sealed
So something for theatre would be simple around 4 to 5 cubic feet sealed.
be more controlled and wont unload.