Power Sound Audio Discussion Thread! - Page 53

Hey, I currently have a SVS PC13U in a non sealed room about 6000CFT. I am not satisfied at all with it. The low end bass is so so but the mid and upper bass is pretty terrible. I just got the RMA for the PC13U. As soon as I get my money back, I an pretty sure I am going to pull the trigger on either two XV30's or two XS30's. Based on Tom's recommendation, probably run them stacked. I wanted to know, what is your opinion on the mid to upper bass that dual XV30's produce for you? Also, what size room are these in? Is it open or sealed?

Thanks

Got to play with my XS30 a little bit today before it got too late. I haven't run Audyssey or anything, just threw it in the corner, set the gain to about 2 o'clock and played the "Pod Emerges" scene in WotW and the Jurassic Park chapter where the T-Rex attacks them. Wow! This thing is no joke!

As you move the subwoofer closer to a wall, the bass output will become stronger and the bass will be maximized, but don’t forget where you place the sofa and chairs is just as important.

Now I have to worry about furniture placement? ....

The other day I told my wife, we need to empty the room and foam spray all the walls with three feet of foam insulation. She just smiled and went back to her computer game.

One does not simply throw an XS30 in the corner lol. The sucker is 111lbs lol, there you go a new sport. Sub chucking!

All jokes aside experiencing both the XS30 and the XV30. The XV30 felt easier to move around. Yeah its about 50lbs heavier but it slides on carpet easier then the XS30.

Hi Alan,

I tried to catch-up over there but the thread seems to be discussing a a lot of different issues. From what I saw, I would recommend the following as general thoughts...

1)try to stick with a single variable each time you make a change. That is, don't try new mic positions AND change the distance/phase on one or more subs. It can be time consuming but if you change more than one thing at a time you'll have a tough road to hoe figuring out what changed what.

2)I'd keep the speaker and sub location as-is for now. The one Audyssey engaged graph showed really smooth bass response. I may have missed something but the primary issue I saw was the deep upper bass null in the 80-160hz range. And this only seemed to occur with Audyssey engaged---correct?

Tom V.
Power Sound Audio

Hi Tom!

Just wanted to say a quick THANK YOU! I just received my XV15 today and couldn't be happier! Been a fan ever since I got the 20-39 PC+...regretted changing it out a few years later for the MFW-15 (due to my ridiculous need for change - crap amps but also a fan of Seaton and his work) , but happy to be getting another one of your great creations again! That's all, nothing more to add than that!

congrats..wlecome to the family (again)

Thanks Tom.

I've been tweaking even more since those measurements, and I've got it flat (+/- 3db) from 20hz to 7khz now. I do cheat a bit - this "flat" response is with 1/6 smoothing (even in the bass region), but looking at it makes me smile. I've still got a small issue with my FL/R crossover at 450hz, but that has nothing to do with the PSAs. Sounding really really good now!

Here's the subs +FL/R post-Audyssey response with NO SMOOTHING, flat until the crossover (80hz):



Y'know, I haven't really done any significant HT upgrades in years, but ever since getting my new receiver a couple months ago the sickness has really taken hold again. New PSA subs, new center channel, measuring equipment (and all the hours of measuring that entails), hours and hours of tweaking this and tweaking that - I forgot just how much fun this all is!

However, now that I'm in upgrade mode, I've been thinking that just maybe....maybe I do need just a bit more sub output after all. Don't be surprised if you see an order from me for another XS15 in the near future!

Schaweet graph.

Does it take a long time to get these (e.g. XS30) or do they ship them pretty quick?

Quick for me...I ordered my XV15 on the night of the 10th and got it yesterday

I believe there could still be a bit of a wait for the XS30 because of how fast they have been selling for PSA.

That is a really big room. Duals for sure. I would think the XV30 would be preferred for such a large room, but so much of this is room dependent. With multiples and to maximize the subs in your room you will want a way to measure them.

I will be rocking the foundation tonight with Skyfall!!!

Me too!!

Tomorrow night skyfall for me.

Watched it last night. Great flick!

Sure she wasn't browsing for lawyers?

I don't think so. I told her she's welcome to use the sound system anytime she wishes.

Smokenashes moved from a XS30 to a XV30 recently. I'd try approaching him (maybe even PM-ing) for his opinion too.

Tom V.
Power Sound Audio

Wow! Two pairs of stacked XS30's? That would definitely meet the definition of........."awesome."

Thanks for the props jlim123. The XV15 really does most everything pretty well. When you have time, go through some of your favorite concert discs and report back(or just email me). I'm always interested in customer feedback.

Tom V.
Power Sound Audio

Best to email us.

We've been "treading water" so to speak in regards to the XS30 backlog. We ship out five, five more ordered. All current XS30 orders should ship by the end of this week (2-22-2013).

The bottleneck is inventory and we have tons(yes, literally "tons" )of inventory due to arrive in the next 2-3 weeks. Between now and then, there may be some delays. After everything arrives, all Power-X orders should be shipping in 1-2 days for the foreseeable future.

Tom V.
Power Sound Audio

I think he meant 2 XS30s total.

But even with just two XS30s stacked you're approaching 130dB averaged from 50-100hz(where most of subwoofer "slam" originates) at 2m, outside, with the CEA-2010 distortion limiters in place. Add in another 8-12 for the corner....that's a bit of "slam" potential.

Tom V.
Power Sound Audio
Edited by Tom Vodhanel - 2/16/13 at 11:44am

I know. I just got carried away with the possibilities. Personally, overall, I'm considering anything and every thing from 16Hz to 120Hz with the expectation of a -6dB slope from 60Hz to 80Hz for the cross over and I'm considering the addition of a MiniDSP to bring it all together but for now, that's a bit down range.

So you know where my thinking is at, our situation is limited by decor, furniture placement and the ever so powerful WAF. I'm looking for solutions and my current direction is an asymmetrical placement of dissimilar manufacture's subwoofers and currently, I'm exploring the possibility of a pair of stacked subwoofers vs a single ported column subwoofer in a particular corner location. Other room locations will have their own, selectively chosen subwoofer and in the end, hopefully, WAF in consideration, there will be three, maybe four subwoofers if I stack a particular corner.

Space is limited by furniture placement and the WAF supersedes personal wants, desires and at times, the physical laws of the Universe. At the time of the comment I coincidentally was measuring the space for a pair of stacked subs as opposed to a single ported column and got carried away with the moment. I don't expect anybody here to approve of what I'm doing so I'll not ask for input. Input here is not worth the vitriol. I'm just sharing the genesis of my muse.

-
Edited by BeeMan458 - 2/16/13 at 10:51am

Thanks for the response. I placed my order on Wednesday, so I'm probably in that batch to ship by 2-22.

Glad you are active on these forums, that shows you care about customers. I was originally looking at another company's sealed dual 15"s subwoofer, but I got a bad vibe when they were out of stock for a long period of time with no updates on their website or any forums. I also really liked what people have to say about PSA around here, that + a great design and fair price was enough for me to make my decision.

Hi Tom,

Just letting you know I recived my XV15 wed. Now im just waiting on my Denon avr 1712 to get here tueday! I cant wait to hear my xv15!First movie I'm poppin in is the dark knight rises. :-D...

Hi Tom,

Been playing around with the settings after calibrating with Audyssey and noticed a difference right away. It's in the same spot as the old MFW was only I had change the phase 180 (maybe due to the rear facing port?). The sub is in a large room (no exact measurements, but it's irregular with vaulted ceilings that opens to a small kitchen). My rough guesstimate would be 16' X 30' starting from 8' to about 16' in height. Even in this large space my single sounds awesome! I've thrown the usual bass heavy movies at it and I can say with certainty that it puts out more bass than the old MFW did! Not only more, but it seems to extend deeper as well.

Anyways, I'm very pleased with the results and now I'm entertaining ideas to upgrade to an XS30 (or even your XV30) in the future. Unfortunately, duals are out of the question as the wife won't allow that so I figured that the next best thing would be one of those. In the meantime, I'm going to be recommending Power Sound when any of my buddies are ready to buy a sub. Wish you guys success!

Great mid bass slam!! I have them in a very large room. 23X30 and opens into a kitchen and another large opening to a hallway. As I have said in numerous post that I love these subs and they have gave me the bass I want. Also the fact that Tom and Jim are pro's and should be on the cover of customer service!! I say go for the dual XV-30's, you will love em.