Dayton UM12-22 12" Ultimax DVC Subwoofer

[GO-NAD!]

Anyone got their hands on this driver yet? Looks pretty impressive at first glance. There's a thread over at HTS about it, but there seems to be some question about the final specs. If CSS is going to take forever to bring out the SDX12, I might be persuaded to go with this new Dayton after I see some user feedback.

 

[jinjuku]

I would go directly to the source: Parts Express Tech Talk Forums. I believe the actually T/S Parms have been posted there.

 

[annunaki]

The parameters were posted and it seems to to well in moderately sized sealed enclosures (3.0ft3 or so) but like most Dayton drivers the xmax is exceeded below 40hz with rated power without any highpass filters.

With EQ and an infrasonic filter it can be very flat with an f3 of 29hz.

I have not completed a vented model yet however.

 

[ImcLoud]

Anyone got their hands on this driver yet? Looks pretty impressive at first glance. There's a thread over at HTS about it, but there seems to be some question about the final specs. If CSS is going to take forever to bring out the SDX12, I might be persuaded to go with this new Dayton after I see some user feedback.

Isnt the sdx12 going to be much mroe expensive?

I noticed this in the latest pe flyer the other day, Im thinking that sub with a crown xls1000 and one of them 3.0 pe enclosures would make one heck of a $650 sub setup, maybe Ill order that tonight and try it out...

 

[GO-NAD!]

Isnt the sdx12 going to be much mroe expensive?

I noticed this in the latest pe flyer the other day, Im thinking that sub with a crown xls1000 and one of them 3.0 pe enclosures would make one heck of a $650 sub setup, maybe Ill order that tonight and try it out...

Yeah, probably. But, shipping could be a major factor for me. Free shipping from PE doesn't extend to Canada. Two of these drivers (I'll be building 2 subs) will cost an extra $160 for shipping and brokerage. So, what CSS comes up with for an introductory deal, as well as the cost of shipping, will be key factors in my decision.

And yes, you should order one, try it out, then report back to us with the results.

 

[GO-NAD!]

The parameters were posted and it seems to to well in moderately sized sealed enclosures (3.0ft3 or so) but like most Dayton drivers the xmax is exceeded below 40hz with rated power without any highpass filters.

With EQ and an infrasonic filter it can be very flat with an f3 of 29hz.

I have not completed a vented model yet however.

From PE:

Vented 4.0 cubic ft. (net internal, not including driver or port volume) tuned to 20 Hz with a 10" wide by 1.5" high slot port that is 25" long, which yields an f3 of 19 Hz

That enclosure volume and extension look very good, but I wonder what output would be? And, why do specs for most drivers rarely include the driver volume? If you need to account for that, how does one calculate it?

I'm curious as to what your modelling results would be.

 

[ImcLoud]

OK, I have a crown xls2500 so Im thinking I will build 2 of these, just have to wait for the sub boxes to get in stock...

2 of these out of stock Dayton Audio SWC3-VI 3.0 ft³ Subwoofer Cabinet Black Vinyl 302-847

2 of these Dayton Audio UM12-22 12" Ultimax DVC Subwoofer 2 ohm Per Co 295-512

So it should only be a around $1100 {well since I own the spikes, terminals, and amp should only be under $700}... Im going to call pe tomorrow and see when I can get 2 of them boxes or if they will give me a break on the gloss ones that are in stock...

 

[GO-NAD!]

OK, I have a crown xls2500 so Im thinking I will build 2 of these, just have to wait for the sub boxes to get in stock...

2 of these out of stock Dayton Audio SWC3-VI 3.0 ft³ Subwoofer Cabinet Black Vinyl 302-847

2 of these Dayton Audio UM12-22 12" Ultimax DVC Subwoofer 2 ohm Per Co 295-512

So it should only be a around $1100 {well since I own the spikes, terminals, and amp should only be under $700}... Im going to call pe tomorrow and see when I can get 2 of them boxes or if they will give me a break on the gloss ones that are in stock...

Have you considered building the enclosures yourself?

 

[ImcLoud]

Have you considered building the enclosures yourself?

I could be I think it would be easier to buy them, I can give it to my woodshop, does anyone have a good list of measurements that would work with this sub?

 

[annunaki]

Well I did a bit of modeling on this driver again for vented and passive radiator applications. Overall it looks like the passive route will work better for those concerned about size.

Assumptions in models:
500 watts RMS input power
Low Pass 4th order crossover at 80hz


Vented:
The vented application I used that worked well for flat response and low LF response yields 5.0ft^3 net volume with a slot vent of 14" x 3.0" x 51" for a tuning frequency of 20hz. The Peak SPL is 112.5db at 39hz with an upper -3db limit of 77hz and a lower -db limit of 18.6hz. In other words, very linear modeled response. The F10 is at 14.8hz. Xmax is slightly exceeded to just 19.5mm at 28hz with this model but well within the realm of safety. Xmax remains within tolorances until below tuning at 17.8hz as mentioned below

PLEASE NOTE: I did not apply an infrasonic filter with this model as I did not want to over complicate things. If anyone chooses to go this route, let me know I can help you get creative with the infrasonic filter and EQ to extract the most without exceeding xmax. Xmax is exceeded below tuning beginning at 17.8hz.


Passive Radiator Application:

Along with the woofer one would need two of the CSS APR15 with 955 grams of added mass each. What is great about this model is it allows one to shave .75ft^3 cubic foot off of the size and avoid the hassles of adding the vent. Well worth the cost in my opinion considering performance is VERY similar. This model requires a 4.25ft^3 net enclosure volume. Peak SPL is 112.3db at 39hz with the upper -3db point at 77hz and the lower -3db point at 19.8hz. Again very linear. The F10 on this option is 15.2hz. Xmax with this option stays within limits completely through the range until 17.8hz. I again did not apply a highpass/infrasonic filter here.

 

[annunaki]

I just noticed today that these are now in stock.