Power Sound Audio Discussion Thread! - Page 60

Just keeping this short.. I was able to sell my XV15 and went with two XS30s. I made the trip up to PSA on 6th March to meet Jim and Tom but unfortunately Tom had a very busy day and didn't get to meet him. Jim was great to talk with and very helpful. Right now I have both stacked at the moment in a back corner to try them out. I'll try another position with them more spread out some time. With 1 being in the back left corner and the other in the front right corner. I only have a few spots to really try. They sound great right now. After playing FOTP plane scene you can really feel it in your chest the pressure. They do the job when called upon that is for sure!

Yeh, it was really difficult knowing they were at my disposal and I just couldn't find the chunk of time needed to hook up and calibrate. Plus, I have a AT screen and I was planning to place one of the XV15s behind the screen, which would require removal of said screen. When considering the amount of time and effort, (not to mention it's a two-person job to remove and re-hang the screen), to do all of that I just kept putting it off. But I couldn't bear the wait any longer and that's why I had to test at least one of them. Now that I have heard it, I am really motivated to get properly set up.

I am coming from a HSU VTF3 MKII and while the HSU is no slouch, the XV15 easily kills it. I haven't heard the Outlaw LFM-2 or the BIC-200 but if their prformance is equal or less than the HSU then you are in for a pleasant surprise. The XV15 is just so damn tight that, in retrospect, the HSU now sounds slow and bloated in comparison. Of course, that is prolly not a fair comparison since they are in different price ranges and a more even fight would (I suspect) be the HSU VTF 15H.

Prior to the HSU, I briefly owned the PSB SUB500 which, although costs quite a bit more than the XV15, is no match for for the PSA (in my room anyway). I also still own a couple of klipsch 12 inchers which are clearly not in the same league.
My neighbour has a Def Tech supercube 8000 in his theater and I called him over to hear my XV15. In the middle of the third song he said he prefered the PSA's "overall" sound and even commented on how much tighter it sounded than his Deftech. Perhaps he was being polite but I also found that the XV15 sounded tighter (and IMO) had more "slammage" than the Deftech----with music anyway. I've watched quite a few movies at my neighbour's place and I can confirm the Deftech really shakes the place, so perhaps the reverse will be true for movies. While I hope that isn't the case, I can't wait to find out.

I hear yah, I have hometheateritis too.

This is what I'm looking for in my HT setup!! :-)

They look mean and awesome. Please post your detailed impressions.

My dual XS30s have been sitting quietly since my theater is currently undergoing remodeling. Hopefully, should be done in another 4 weeks before I unleash these duals

I'm still waiting patiently for my XS30's and those pictures do hit the spot, thanks for posting those Just hoping that I have sub envy and wish I had gone with 2 XV30's instead!

stm69 dual XS30's are defiantly worth the wait. So far I love mine! They put a big grin on my face everytime I watch a movie.

What is the port tune of the xv-30?

Just got back from a cruise and was wondering if there was any new updates as to if orders have started shipping back out again?

Haven't been back here for a while, and no new photos either (sorry).

But I do now have dual XS30's...Low frequency rumble anyone? I have a BFD on the way, and it can't cut below 20hz. But why would I want to do THAT!?!?

That's a big null at 40hz. Would that be from room setup?
Edited by jbrown15 - 3/24/13 at 5:05pm

The yellow line is both combined, which is an improvement. But my room has big challenges in that it opens up to the rest of the house. I'll have a BFD end of the week, and will cut and boost as needed.
Edited by Thermoform - 3/24/13 at 5:30pm

I would experiment with placement more if your back allows it. Even if you have a challenging room that opens up to the rest of the home, careful placement of the subs relative to the MLP should be able to produce relatively good response. There is a 20dB difference from 30hz compared with 40 and 50hz and given that is where the majority of HT energy lies, you are missing out on a substantial amount.

Cutting and boosting can only do so much and almost no sub has the headroom available for a 10-20dB boost, especially at lower frequencies.

My 2c.

My options are to pull the subs out a little. That's about it. I will take multiple measurements to the left and right to make sure that that particular spot is not the problem...
And, with two subs reinforcing each other, I may be able to do more with EQ than with a single sub...
Edited by Thermoform - 3/24/13 at 7:48pm

im thinking about grabbing an Antimode cinema for 280 shipped...any thoughts on it?

Were your measurements taken with your AVR's Auto EQ on or off?

From about 33hz to 40hz you have a 25db dip...you will not be able to boost that with EQ, just not gonna happen. If you try, you're gonna possibly do some serious damage to your subs.

You're not gonna get your money's worth from those dual XS30s without experimenting more with room placement. Are you absolutely certain you don't have more placement options? Back of the room for example......

You need to get your response much flatter before you even start thinking about EQ'ing.

I was actually thinking about picking up another two XS30's and then stacking them. Two in each corner of my front wall, that could be fun....lol

Anti-Mode wrks very well!! I used it for years before getting my Denon 4311 which uses XT32, so I no longer needed an Anti-mode

Bueller? Fry?

I finally got the chance to watch Tron with the XV15...WOW! That was the most amazing LFE I've ever experienced. Basically an all out assault on me, my townhouse and probably my neighbors as well. Even though there is a concrete wall in between the houses in the basement I'm still worried they hate me and think I'm blowing up stuff in my basement.

Could be wrong, but I believe it's @20hz or just above that.

Wouldn't it be around 18hz which is the port tune of the XV15.
Edited by jbrown15 - 3/25/13 at 4:28pm

I was thinking around 20 as well based off the xv-15 but if I recall from its review, ricci thought it was closer to 18.

I will take a measurement with no EQ for sure, and from a couple of different positions to confirm. What I see are very large humps that need to be subdued. Once that is done, the dips become much less severe. You have got me thinking about swapping the speaker positons for the subs, thanks for the prodding...

Hi all,

I'm sure I've missed a couple of questions but I'll catch up tonight.

UPDATE---Shipments begin again today! (i know---and there was much rejoicing...)

We expedited a partial shipment(couple of pallets) of 15" drivers in from Nevada which arrived today. We have a much larger shipment due to arrive mid next week.

All back orders should be fulfilled by the end of next week.

Tom V.
Power Sound Audio

Hi all. Hope I can get some help. I bought three xv15s recently and using onkyo tx nr709 receiver. I pretty much read this whole forum and tried many things that were suggested here. I ran the audyssey on the receiver and not been too impressed with the LFE. I mainly use mine for HT. some scenes I get pretty good bass, the whole house shakes, per my wife. But in many scenes, it feels weak. I just don't get that pressure in the chest feel. For example, gun shot in avengers feels like nothing. Same scene at my fathers house where he has a cheap Boston 10 inch sub, you can feel very gunshot. I know it's different room etc, but you would think 3 15 inch subs could give me same feel. This has me thinking, it's my receiver and the audyssey. Possibly bad mic?

Also, when I check the subs, the woofer and port barly moves air on many of the scenes. With Boston, it can feel it pushing large amount of air. Is because it 15 inch sub don't have to move much compared to 10 inch?

I have tried sub craw, running the sub hot on receiver and setting the volume to 3 o clock. Filter to bypass both on the subs and receiver. Cross over on the receiver is at 80hz from the LRC.
If i turn the subs too hot, it just gets boomy and uncomfortable but still don't feel pressure change.

Any ideas? Thanks

Can you provide a diagram of your room with the dimensions and sub placements?

Do you have all speakers set to "small"?

Are you using a mic stand or tripod for the Audyssey mic?

What is the subwoofer level (in the AVR) set by Audyssey?

Do you have an SPL meter to check and make sure Audyssey set your speaker levels correctly (usually not a problem , but can be sometimes)?

Integrating multiple subs into any listening environment can be a tricky proposition. You will need to experiment with placement, phase and sub distance settings (in you AVR) to get that "just right" balance. IMO, the capability to measure your room's response is essential to integrating multiple subs (i.e. REW, OmniMic).

Wow, 3 xv-15's. Even with bad placement you should still be able to get a good punch.

Clarify "bypass". The crossover knob on the sub should be all the way to the right. The lfe crossover in receiver should be at 120. Is it possible that you bypassed the life channel and you are only getting bass redirected from your front and center?

Hi Alan,

My room is L shaped or T shaped if you count the door opening. The rectangular area is 14 by 19. Two rows of seats.

I have two subs inside of front left and right. One against right lateral wall.

Have used spl meter,
Onkyo does not have a small speaker setting.
I used tripod for the mic.
I have axiom m80 HT

Reading back few pages one member seem to have similar issues. Really low bass is boomy and no mid bass punch. His problem was the mic. I just ordered a new one. But wanted to get more opions.

Thanks for the suggestion. I need to learn how to use rew, but not there yet. I am new to this stuff.