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How many of you are using a PB2+ in a smallish size room?


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22 replies to this topic

#1 of 23 Anthony Cler

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Posted January 12 2005 - 07:01 AM

I'm about ready to pull the trigger on a new SVS sub and am leaning pretty heavily towards the PB2+ (or is it PB12+/2?). My room is about 2500 cubic feet and is well sealed. I'm guessing that a 20-39PC+ would be enough most of the time, but I kind of want the extra elbow room if you will.

When I had my 16-46PC+, I rarely listened above -20db and would occassionally push it close to -10db but sensed it was nearing it's limit at that point. I kind of figure if I have the PB2+, that I might listen at -10db more often and maybe even experiment with higher levels.

Am I crazy? Is this too much sub for my room?

#2 of 23 Craig Chase

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Posted January 12 2005 - 07:11 AM

Before pulling the trigger, you might PM either Edward J M or Robb Roy ... They both have changed from the "Plus" to the "Ultra" driver, and noted superior sound quality from it.

A 2500^3 foot room should EASILY be handled by a single PC-Ultra ... and that *may* be a better choice for you.
Craig Chase

#3 of 23 Anthony Cler

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Posted January 12 2005 - 07:40 AM

Craig, thanks for the tip. I originally was considering the PC-Ultra also and haven't ruled it out yet, but I also know that I liked the sound of my 16-46PC+ and just want more output. I also like the idea of twin drivers. At first, I felt the PB2+ would be serious overkill, but then you see some of these folks with twin B4+'s or IFB subs. So I'm still not sure. One thing is for sure, I don't have unlimited funds Posted Image

#4 of 23 Craig Chase

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Posted January 12 2005 - 08:58 AM

From about 18 Hz and up, the PC-Ultra should be about 4 dB higher in output than your 16-46 + was ... and it will also only be about 3-4 dB less than the PB2+ ... A pretty good mix of higher output AND sound quality.

We had a pair of the 16-46 PC+ here, and while they went DEEEEEEEP ... they were not SPL kings...
Craig Chase

#5 of 23 Tom Vodhanel

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Posted January 12 2005 - 09:08 AM

>>>I'm about ready to pull the trigger on a new SVS sub and am leaning pretty heavily towards the PB2+ (or is it PB12+/2?). My room is about 2500 cubic feet and is well sealed. I'm guessing that a 20-39PC+ would be enough most of the time, but I kind of want the extra elbow room if you will.<<<

PB12-plus/2..Posted Image

Extra elbow room is always nice...even if you only very rarely use the louder volume levels...you are insuring extremely low distortion at your common listening levels. Dynamics come thru uncompressed and the whole audio presentation seems more realistic.



>>>When I had my 16-46PC+, I rarely listened above -20db and would occassionally push it close to -10db but sensed it was nearing it's limit at that point. I kind of figure if I have the PB2+, that I might listen at -10db more often and maybe even experiment with higher level<<<

With all speakers set to small, and the bass calibrated *even* on the SPL meter...reference levels can require up to 121-127dB from the subwoofer these days. So if you decide -10dB will be your highest volume level...we can say the subwoofer should be able to produce 111-117dB without straining. The safest bet for that in you room size would be the PB12-plus/2. I'd set it to 20hz mode. You'll get strong in room extension down to 15-17hz with no problem hitting those output levels mentioned above. This would be a bit more potent than the PC_Ultra...although the ultra does give you the single band parametric.

Tom V.
SVS

#6 of 23 Anthony Cler

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Posted January 12 2005 - 09:56 AM

Thanks Tom!

I'm actually planning to use a BFD, so I think the PB12Plus/2 will be the one. My driveway should be poured no later than next Tuesday (weather permiting), so it's probably safe to go ahead with the order now. I just want to make sure I make it as easy on myself as possible Posted Image

Man that seemed like such a tough decision, but now I feel completely satisfied with it. I can't wait to get the room finished!

#7 of 23 steve nn

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Posted January 12 2005 - 11:05 AM

Man that seemed like such a tough decision, but now I feel completely satisfied with it. I can't wait to get the room finish!
__________________________________________________ _

Might have been tough but I think you really nailed it Anthony. I have been running my PB12-Ultra/2 in the 20Hz tune for the last week or so in a open 2880^ and have been very impressed.

Headroom will serve you well.

#8 of 23 Jeremy Hegna

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Posted January 12 2005 - 11:43 AM

Anthony...

I have the PB2 Plus in an 1800 cubic foot room. I had a 20-39 PC (one of the originals) before the PB2.

The difference is night and day and the sound is downright scary! Elbow room...LOL..you will have plenty.

The smaller the room, the bigger the boomPosted Image

Good Luck

Jeremy

#9 of 23 DonnyD

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Posted January 12 2005 - 12:05 PM

Quote:
I'm actually planning to use a BFD, so I think the PB12Plus/2 will be the one. My driveway should be poured no later than next Tuesday (weather permiting), so it's probably safe to go ahead with the order now. I just want to make sure I make it as easy on myself as possible

WOW... somebody wants one of these SVS monsters bad enough to pour a driveway just to get it in their house!!! LOL

Let me add, that I too went from a 20-39pc to a PB2+. There's certainly lots of leg left to that thing regardless of the assault it just put on my HT room.........

You'll love your new driveway more when you use it to get this monster into the house!
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#10 of 23 Anthony Cler

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Posted January 13 2005 - 02:24 AM

"WOW... somebody wants one of these SVS monsters bad enough to pour a driveway just to get it in their house!!! LOL"


Yeah, actually it's been tough to wait this long. I purchased most of my other gear(for the new house)months ago. The only thing that stopped me from ordering the sub earlier was the thought of having to move the beast more than once :S


"I have the PB2 Plus in an 1800 cubic foot room. I had a 20-39 PC (one of the originals) before the PB2.

The difference is night and day and the sound is downright scary!"


Good, I want to be scared Posted Image

#11 of 23 JohnSmith

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Posted January 13 2005 - 03:50 AM

Nothing wrong with getting a subwoofer that's slightly overkill...but really a bit daft to get one that's stupidly overkill (and paying for it) then only using 20% of it's performance.

Not that you should get a subwoofer from a much lower range...but you get my point.

I think a PB2+ is way overkill for that room...perhaps PB2 ISD or PC-Ultra. In fact a PC Plus should be fine, and you could always add another later on- if you do buy 16 or 20hz PC Plus's - in stock tune- will have far deeper bass than a single PB2+ instead of plugging any ports at all.

#12 of 23 Ilkka R

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Posted January 13 2005 - 06:45 AM

Quote:
With all speakers set to small, and the bass calibrated *even* on the SPL meter...reference levels can require up to 121-127dB from the subwoofer these days.
Where does this come from? Isn't it 117dB? Check this. If you are referring to those 10dB hot dvd's, then it's ok. But you know, no one will watch those at reference, try for example Minority Report or SW:AOTC...you just can't. -10dB is more than enough.

#13 of 23 Anthony Cler

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Posted January 13 2005 - 07:02 AM

"Nothing wrong with getting a subwoofer that's slightly overkill...but really a bit daft to get one that's stupidly overkill (and paying for it) then only using 20% of it's performance."

I kind of felt the same way before and that's part of the reason I had such a hard time making a decision. I'm certain I'll be using alot more than 20% of it's potential though.

"I think a PB2+ is way overkill for that room...perhaps PB2 ISD or PC-Ultra. In fact a PC Plus should be fine, and you could always add another later on- if you do buy 16 or 20hz PC Plus's - in stock tune- will have far deeper bass than a single PB2+ instead of plugging any ports at all."

I don't know, I did own a PC+ before (16-46) and I know there were times when I was pushing it close (if not past) it's limits. I definetely noticed compression setting in on more than one occassion. I feel like it's a better financial decision to go with the PB2+ now than to add on a second PC+ later. Now if I already owned a PC+, it would probably make sense to stick with it and maybe add on a second one later if needed, but I'm starting from scratch here.

Also, while the PB2-ISD is probably more than enough, I'd rather have the Plus drivers and larger ports.

I might also add that my room is completely Isolated from the rest of the house. I did the "room within a room" thing, double sheetrock, etc, etc...

I know that most of the time, the PB2-Plus will practically be idle, but for those occasions when I want to go crazy, it will go as far as I dare take it Posted Image

#14 of 23 JohnSmith

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Posted January 13 2005 - 07:53 AM

There should be quite a difference of maximum possible output between your 16hz PC Plus and the 20hz PC Ultra. Something to think about.

#15 of 23 Eric Ha

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Posted January 13 2005 - 08:24 AM

Also remember that the single driver PB12/Ultra is coming out sometime this year. Like the PC-Ultra, it's native tune will be 20hz, which is 5 hz lower than the PB12+/2 (which I have and is a monster). This means you would have to plug a port in the Plus to get the same 20hz tune, losing output in the process.

Bottom line:

Normal to medium loud spl levels- single driver Ultra. High spl levels- twin driver Plus or Ultra.

#16 of 23 Anthony Cler

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Posted January 14 2005 - 06:07 AM

"Bottom line:

Normal to medium loud spl levels- single driver Ultra. High spl levels- twin driver Plus or Ultra. "

You're right! I guess I figured that I've spent a fair amount of money building a pretty nice room and I want my system to be capable of True reference levels, even if it will only be used occasionally. The PB2+ is at the upper limit of what I'm willing to spend, so the PB2-Ultra is definetly not an option.

Thanks to everyone for their input! My concrete guys are forming up the driveway today and will pour it on Monday. So now I just need to go place my order for one of these bad boys.

#17 of 23 Anthony Cler

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Posted January 14 2005 - 08:33 AM

Placed my order! My PB12plus/2 should ship next Tuesday!

Woohoo!!!

#18 of 23 steve nn

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Posted January 14 2005 - 11:09 AM

The PB2+ is at the upper limit of what I'm willing to spend, so the PB2-Ultra is definetly not an option.
_________________________________________________

Hey you took it to the limit($$)wise and the PB12-Plus/2 will certainly take you there in your size room.

>>>My concrete guys are forming up the driveway today and will pour it on Monday.<<<

You better let it set-up good or they will be repouringPosted Image

#19 of 23 Sonnie Parker

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Posted December 20 2005 - 05:08 PM

I just had to revive this thread... it got my blood flowing. I'm anxious to hear how many of you guys still have your PB12-plus/2's and if you are still happy with them.

Who was that talking about overkill... I just order TWO PB12-plus/2's for my completely sealed 1800 cubic foot home theater room. Posted Image Posted Image Posted Image

I'm wondering with two if I should tune them to 16hz or go for 20hz?

#20 of 23 WayneO

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Posted December 21 2005 - 01:38 AM

Quote:
I'm wondering with two if I should tune them to 16hz or go for 20hz?
After having mine for 2 years I finally did further testing with the 16hz tune after never even thinking about using it since I had bottomed one 20-39PC+ and upgraded. Didn't think I'd have the headroom and I had good response to 17hz anyway at 20hz. My tastes in output have mellowed a touch and the 16hz tune seems to be a touch lower in SPL but gained articulation so that's where it's tuned. I wish I tried it sooner. You should have no problems tuning to 16hz in that room and having to ever worry about headroom IMO.
If the best advice is "listen for yourself", then why offer your opinion?





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