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New SVS Ultra 16"


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#41 Ricci

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Posted 13 October 2016 - 02:42 PM

Kudos for the edgewound coil but that 8" coil can handle four or five of the amplifiers they are pairing a single unit with. :D

 

 

Maybe not. The SB16U probably since it is an overhung design and a claimed 32mm xmax so that's probably a lot of coil there. The PB16 is an underhung though so it may not actually have that much wire mass. Doesn't look like it in the exploded view. Should be plenty for what they've paired it with though.

 

I was wondering what the frame diameter is on that driver. Could be actually 16" or could be 17". I read some people discussing the 16" size choice like it didn't make sense to them cause it wasn't "standard". There have been oversized and odd size drivers on the market for years. Orion HCCA 15's are really 16's, RE XXX's are oversized, JL drivers have been odd sizes for years, square subs, pentagons, 11's, 13's, 22's, etc...SVS doesn't sell these except as part of a finished powered system anyway.



#42 Infrasonic

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Posted 13 October 2016 - 05:04 PM

People fear that which they do not understand. :mellow:


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#43 lowerFE

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Posted 14 October 2016 - 01:14 PM

Maybe not. The SB16U probably since it is an overhung design and a claimed 32mm xmax so that's probably a lot of coil there. The PB16 is an underhung though so it may not actually have that much wire mass. Doesn't look like it in the exploded view. Should be plenty for what they've paired it with though.

 

I was wondering what the frame diameter is on that driver. Could be actually 16" or could be 17". I read some people discussing the 16" size choice like it didn't make sense to them cause it wasn't "standard". There have been oversized and odd size drivers on the market for years. Orion HCCA 15's are really 16's, RE XXX's are oversized, JL drivers have been odd sizes for years, square subs, pentagons, 11's, 13's, 22's, etc...SVS doesn't sell these except as part of a finished powered system anyway.

 

 

Where do you see the PB16U driver is an underhung design? The manual says overhung.



#44 Ricci

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Posted 14 October 2016 - 02:22 PM

Where do you see the PB16U driver is an underhung design? The manual says overhung.

 

Regardless of that. It's underhung. The SB16 is overhung. ;)



#45 Kyle

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Posted 14 October 2016 - 08:58 PM

Similar OEM counter part. Tymphany makes the SVS drivers so this is probably more similar than not to the ultra driver. 

 

 

 

 

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#46 radulescu_paul_mircea

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Posted 17 December 2016 - 10:01 AM

So Audiholics measured and reviewed the sub already
http://www.audioholi...er/measurements
I thought Ricci did the measurements for their subs

#47 lukeamdman

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Posted 17 December 2016 - 04:27 PM

Eh.   You'd get more SPL and better response with two PB-13 Ultras.  



#48 Ricci

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Posted 17 December 2016 - 09:18 PM

So Audiholics measured and reviewed the sub already
http://www.audioholi...er/measurements
I thought Ricci did the measurements for their subs


They know how to contact me. They probably figured it would be better to go with AH cause they are a vendor sponsor there and it's probably going to get more views from an advertising perspective. I bowed out from reviewing for AH mostly due to lack of time and will to do it among other things. Member ShadyJ is doing their reviews now.

#49 radulescu_paul_mircea

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Posted 18 December 2016 - 09:52 AM

Eh. You'd get more SPL and better response with two PB-13 Ultras.

Of course you would. But it would be more expensive.

#50 Jeff Permanian

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Posted 19 December 2016 - 02:31 AM

So Audiholics measured and reviewed the sub already
http://www.audioholi...er/measurements
I thought Ricci did the measurements for their subs

That's about what I expected. Can't wait for Josh to test the new Cap1400 :)


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#51 Kyle

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Posted 31 January 2017 - 05:37 PM

Eh.   You'd get more SPL and better response with two PB-13 Ultras.  

 

I'd like to see the PB13 with that new 1.5k amp

 

:\



#52 lowerFE

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Posted 31 January 2017 - 11:02 PM

Could anyone chime in on why SVS Ultra drivers do so poorly in maximum upper bass SPL? It must be a very inefficient driver, but why throw away so much sensitivity? JTR's Captivator clearly shows you can achieve exceptionally high maximum SPL both down low and up high with a low Mms "high-ish" sensitivity driver.  What's the advantage gained with such a low sensitivity driver? They clearly chose to do this to maximize low bass output, but if that's the only reason, it seems to be a rather big sacrifice, especially when looking at what the Cap is capable of. 



#53 Infrasonic

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Posted 31 January 2017 - 11:12 PM

SVS typically tailors their subwoofers response to be flat anechoic.

 

I'm sure they slice out any rising response if the driver has it with internal DSP shaping. Had these been passive systems where Ricci could dump a larger amp worth of CEA burst...it might look different.

 

 

They like to publish nice pretty lines that are flat. :)



#54 Ricci

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Posted 01 February 2017 - 01:25 AM

They tend to use drivers with lowish sensitivity so they have a flatter more extended natural response. The tradeoff is the upper bass headroom is lower than with a more efficient driver.

#55 SME

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Posted 01 February 2017 - 07:07 AM

Inductance could come into play here, but I'm not sure it does.  I've noted already that in sealed systems, mass doesn't do much to response except cut the high end.  It improves sensitivity and efficiency down low only slightly.  It may also have some slight benefit as far as distortion is concerned.



#56 Kyle

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Posted 01 February 2017 - 03:40 PM

I never like giving up sensitivity, even in sealed tbh



#57 Ricci

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Posted 01 February 2017 - 04:59 PM

Inductance may be a factor on the 16 drivers even with shorting rings in the motor. An 8" coil is a large amount of wire even if it is only a 2 layer or a shallow wind height. The Tymphany driver Kyle linked is the platform they are based on that seems clear, but I'm sure SVS 's version are modified for their specific apps. They do say one is an overhung and the other is underhung for example. It's probable that SVS developed that driver with them as the build house and now Tymphany is offering their own version.  A few things pop out off of the Tymphany spec sheet though. The frame OD is 15" even on the spec sheet so I wonder why list it as a 16"? Also the former ID is listed at 7.4" so it seems like a 7.5" coil not 8". Still huge for sure. MMS is listed at 538g on the T driver which is heavy but honestly lighter than I would've imagined with such a large diameter former and coil. Motor efficiency is about 160. 1w/1m sens is rated at 83dB. That's pretty low. The gap height is very large at 36mm and xmax is only listed at 10.5mm. I'd assume that's a very basic coil overhang figure with no adder. That would be very conservative with such a large gap height and 57mm overhung coil wind. Using a calculation that adds 1/3rd gap height to the overhang would put Xmax 22.5mm and assuming I'm correct the coil wouldn't leave the gap completely until 46.5mm one way. I'd expect that driver to exhibit a very broad BL curve with shallow reduction in force as the coil moves away from centered in the gap so it should certainly be capable of a ton of excursion with distortion increasing relatively slowly as excursion increases. Again SVS's units could be substantially different so I'm just speculating most of this off of the T driver data sheet.

 

Found a cutaway...Looks like they are using a bucking mag up top to get a bit more flux through the gap. Also 2 big aluminum sleeves.

STW350cutaway.jpg


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#58 Kyle

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Posted 01 February 2017 - 11:19 PM

I'm starting to wonder if the Old PB12-Ultra/2 could compare to this thing. Does anyone have one? Its going to have a power disadvantage with that 1k bash amp, but I think it could be a cool battle :D



#59 MemX

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Posted 02 February 2017 - 04:01 PM

I'm starting to wonder if the Old PB12-Ultra/2 could compare to this thing. Does anyone have one? Its going to have a power disadvantage with that 1k bash amp, but I think it could be a cool battle :D

 

I've got a PB2/Plus, which I think was later renamed to the PB12-Plus/2 - not quite the same model but a similar design :P

 

It's been gathering dust since my PPSL build!

 

I need to sell it TBH, at the moment it's just a convenient table for dumping things on  lol



#60 Kyle

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Posted 02 February 2017 - 05:00 PM

The Plus/2 was awesome too, I loved that sub.

 

Old school subs for the win :)






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