DR.SPEC!! SVS tube or cube same same??

faster100

I just want to know, is the new pb1 the same as the 20-39 pci, for the first time ever, when i mentioned to my wife about getting a SVS she said that has carpet right?? she likes the wood or atleast a box, so is the pb1 same low bass as the cylinder subs??

Tour2ma

Now we know what the recent rash of fund-raising was about...

faster, the good Doctor is out right now.

I can say that he is planning to give the new pb2 a spin and thinks it can improve on his cylinder's performance. I don't think he would say the same about the pb1... at least he never has that I know of...

But hey, I'm only an intern...

VR3

The PB1 goes down to 25hz, and its not wood. Its like a fiberglassish type mess. Not exact fiberglass. Let me put it this way....its like...impervious to scratches. Well, the Pb1 goes down to 25hz, if im not mistaken if you plug the port it goes down to 20hz. But who would want to flood the driver?

faster100

So are we saying yeah or na?? On the pb1, I can't drop 1200 on a sub for the pb2, out of the question. its either the 20-39 pci or the pb1....... i have a Micro room for now so i don't need earth cracking bass for awhile i just want more then i have..

carvinman1

faster,
I believe Tom at SVS has made the statement that the Pb1 has the same output as their small cylinder sub. There may be more info on their website.

Danny

hotwheelman

Where is the doc anyway?

faster100

I just e-mailed svs, Doc can get back with me when ever he shows up..

dorokusai

Dr. stated that it was the same essentially just in box form for those who wanted a traditional design subwoofer.

burdette

From the perspective of the physics of a subwoofer, it *shouldn't* matter. All the driver cares about is the volume of air behind it and how hard/easy it is to move it. It does NOT care what shape that air takes. Assuming there are no design problems in either the cylinder or box, such as a mislocated or missized port, then the same volume, driver, port(s) etc should give you essentially the same result. If SVS says the difference is appearance only, that very well *could* be true... you need only decide if you believe SVS. I'd lean towards believing them. They have too much to lose to misrepresent their products.

faster100

I never read anything about it, so i wasnt saying they were wrong or right, I wanted Specs advice i guess.. even though he hasn't tried one yet i assume, I have already spoke with Tom at SV and he had given me all the info i need, Thanks

I will be getting the pb1 after i sell this 404 and save the rest, Thanks everyone

Tour2ma

Good show faster... was going to recommend you call Tom. I think you have chosen well.

Sid,
The PB1 is tuned to 22 Hz, that's the low end rating +/- 3 db.

faster100

The 20-39PCi and the PB-1 will perform nearly identically from about 22-23hz and up…under that and the 20-39PCi will have a very slight edge.

In your room, both of these options will extend down to the 16-18hz range, providing a clean 112-118dBs of output.(very low and very loud). Which receiver are you using in your system? The smaller the room, the deeper a given subwoofer will extend. This is due to the acoustical phenomenon commonly referred to as *room gain*. Which also explains why cars can reach such deep/loud bass with a single 10” driver..:)

The 404 is a ported unit tuned fairly high…in the 35-40hz range I believe. With a relatively small enclosure and a 10” driver, it is going to be hard pressed to really energize the room with low clean bass. I am very confident you’d find any fo the SVs to be a huge improvement…esp in the 16-32hz octave.



Tom V.
SVS

Straight from Tom @ SVS

faster100

bump

Dr. Spec

Sorry about the slight delay, Faster, I was out of town for a few days.

The PB1-ISD is a virtual sonic clone of the 25-31PCi with the optional 22 Hz port installed. This mod is free and popular with the 25-31 owners. This model is affectionately known as the "22-31PCi" even though no official model designation exists for this particular sub.

The 20-39PCi will dig a bit deeper than the PB1-ISD, but it might not be noticeable with most program material.

The PB1-ISD is a wooden enclosure, but the finish is that tough pebble black texture.

I think you will find either the 20-39PCi, the 25-31PCi, the "22-31PCi", or the PB1-ISD all to be a huge improvement over the 404 in terms of clean output, and deeper extension.

Doc

faster100

Sounds good to me, Thanks again as always