SVS PB12 Plus vs 18" Custom - AVS Forum
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post #1 of 9 Old 10-05-2012, 12:08 PM - Thread Starter
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SVS PB12 Plus
http://www.svsound.com/subwoofers/ported-box/pb12-plus
vs
18" sub in ported custom box. Proper amp, external crossover.
Driver info: http://www.mccauleysound.com/component_overview.cfm?ID=126

Room
16x16x7.5 but will soon will be in a bigger house, not sure what room size will be.

System use
50/50 home theater and audio (some analog, some digital)

Speakers
KEF reference and XQ series

Goal
Quality music, movies that hit you in the chest without fake, boomy or inaccurate bass.
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post #2 of 9 Old 10-05-2012, 12:52 PM
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Interesting. That seems to be a PA suited sub. Do you have a link to specs?
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post #3 of 9 Old 10-05-2012, 01:14 PM - Thread Starter
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Performance Overview
Freq. Response (-3dB) 15Hz - 800Hz
Recommended Enclosure Volume 6ft³
169.9L
Power Handling (Program)
Full Range 800W
Max Peak SPL
Full Range 129.031dB
Max Continuous SPL
Full Range 123.031dB
Sensitivity
Full Range 94dB
Thiele Small
Free Air Resonance (Fs) 20
4Ω DC Coil Resistance (Re/Dcr) 5.6Ω
Electrical Losses (Qes) 0.38
Mechanical Losses (Qms) 2.9
Total Quality Factor (Qts) 0.34
Equivalent Volume of Air (Vas) 25.9ft³
733.41L
Effective Piston Area (Sd) 199in.²
1283.87cm²
Excursion -- Max BL (Xmax) 0.6in.
15.24mm
Volumn Displacement (Vd) 200in.³
3.28L
Inductance of V.C. (Le) 1.1mH
BL Factor 15.3Tm
Effective Moving Mass 0.222kg
7.83oz.
Nominal Efficiency 0.0066%
Flux Density 13500 gauss


Physical
Bolt Circle Diameter 17.5in.
444.5mm
Effective Piston Diameter 16in.
406.4mm
Front Mount Baffle Cutout Diameter 16.78in.
426.21mm
Driver Diameter 18in.
457.2mm
Dimensions
Product Dimensions 18.1875in. x 10in. x 18.1875in.
461.96mm x 254mm x 461.96mm
Net Weight 36.78lbs.
16.68kg.
Shipping Dimensions 22in. x 22in. x 10in.
558.8mm x 558.8mm x 254mm
Shipping Weight 40lbs.
18.14kg.
Design Properties
Characteristics Cone Driver
Magnet
Assembly Weight 26lbs.
11.79kg.
Voice Coil
Diameter 4in.
101.6mm
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post #4 of 9 Old 10-07-2012, 08:06 PM - Thread Starter
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Well those specs were a thread killer wink.gif
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post #5 of 9 Old 10-08-2012, 09:08 AM
 
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Go with what makes you all fuzzy and warm inside as an 18" driver vs a 12" driver isn't even close to the definition of a comparison. Not sure what specs you're quoting but these are the specs for the PB12 Plus.

???

Driver Specs:

SVS 12” high performance Plus driver
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post #6 of 9 Old 10-08-2012, 09:20 AM
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The performance of the SVS will be limited by the displacement capability of the 12" it uses and it won't be that capable compared to a nice 18" driver. Also, the 18" you listed is not very suited for 'subwoofer' use. It can be done but the output will not be that great down low.

Bring this thread to the DIY audio section. wink.gif

My Dual 18" LLT subs 120dB down to 10hz

 

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post #7 of 9 Old 10-08-2012, 09:45 AM - Thread Starter
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I wish I could hear both but it's not an option.

I was dead set on the PB12 Plus after talking to SVS but then I know someone who has the Mc Cauley 18" in storage. I won't be able to listen first due to distance from me, prob meeting half way on the side of the road if I get it.

Up to now I've mostly focused on 2 channel audio caring only about quality. Then I added on theater items going to 5.1 and got a good KEF sub that sounds nice and has a fair bit of rumble but have been craving something to slam you in the chest without sounding like crap.
If SVS is the best route, I can do that but was intrigued by the Mc Cauley, the driver by itself was $800ish when new and quite a few people have done DIY's with it. I just don't know enough about what matters in a high end sub to understand if it's the route to go.

Can I ask why the Mc Cauley isn't suited to sub use in a theater?

Thanks for your help. If this is better in the DIY could a mod move it there?
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post #8 of 9 Old 10-08-2012, 02:44 PM
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If chest slam is what you want, go with the McCauley.

My Dual 18" LLT subs 120dB down to 10hz

 

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post #9 of 9 Old 10-14-2012, 04:23 PM - Thread Starter
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Ended up getting the PB12 Plus, love it. Just didnt' want to risk the unknowns with the McCauley when I know the PB12 Plus will be awesome in my room. Glad I did.

Thanks for the input everyone.
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