HSU Research ULS-15 vs. PC/PB13-Ultra - Page 3

Thank you for the acknowledgment Ed. It is always reassuring to see others traveling related paths to come to similar conclusions. I'm sure we could have fun debating plenty of other matters over a frosty beverage or three, but differences in product designs and means of solving real problems is what keeps things interesting.

For the record, I agree with Ed's suggestion that there is plenty of material which has staccato and percussive instrument use where some degree of difference can be observed. Of course that first assumes the frequency response is reasonably flat and lacking any giant holes at the listening position and at the levels being listened to. If that added extension is regularly driving your subwoofer into heavy overload/non-linearity, there are likely better compromises to be made.

I have heard of some problems with the wireless Ul15. It picks up other wireless transmissions in the room and outside. Might be a deal breaker.

This thread has inspired me to plug my ports and give my U13 a run in sealed mode. I've been playing with the idea for awhile (in fact Ed suggested it from the beginning), but I've been lazy and stubborn. Recently, I've been running my rig sans sub in 2 channel as my mains are only down 5db at 20hz and adequately powered, don't need a sub. But there are times and content where the added spice would be nice. I don't seem to listen to HT higher than -10 from reference anymore, so I doubt I'll miss the lost headroom. Room's fairly small ~ 2K. Tomorrow, I'll have some time, so I'll see what's what .

That wasn't intentional and is a result of moving to vBulletin software. I will see if we can do anything about it.

Funny you mention this because this is exactly what I did last night.
It was my first time running my ultra in sealed mode.
I didn't play with it a lot but it did sound good.
The bass was even quicker and intergrated with music better.
I had to re-calibrate which involved raising the gain several db's.

Truth be told, i went back to 15hz tune and am seeing how i like it as so far 95 percent of my time with this sub has been in max output mode.
But at the end of the day the variable tuning was a big selling point for me.

I have got to try the 15Hz mode sometime. Three months and counting .

This has now been fixed and anyone can view the results again.

So what did you decide to go with, Kain?

With 4 Ultra 13's in a sealed 2200 cubic foot room,...what would be the best way to setup the subs...... all sealed?

Thanks.

That sounds perfect for four sealed 13Ultra's. With room gain you would probably have strong response down to <10hz.

Play around with what works best. you might find a combination that works best in your room. Why not get maximum extension, maximum spl and maximum in room response. Maybe 1 ported 3 sealed placed around the room.



FWIW, I have two ported subs and two sealed subs in my room.

no way man, unlock your true potential thru porting

Interesting. Seems like a lot of tweaking! FUN!

If I am tweaking and want a reference frequency tone, could I just use the ones on DVE BR edition? That has an audio section.

Also, I plan on getting a SPL meter. So would I try to get every frequency to be at 85 db at my listening position?

man i am having the same problem deciding between these two subs!!!!

The price of the Dual Hsu's are tempting, but the flexibility and sheer power of the PB13 are very attractive as well. You guys have a tough decision ahead of you. Whichever you chose, you'll have one heckuva subwoofer! Enjoy.

I have HSU ULS15 dual drive and I think it has significant "sheer power". It is more then SVS PB13, I don't know. Is it enough to get the job done? I think so.

I am curious to see ground plane measurements on multiple sealed sub arrangements including the new sealed SVS in the pipeline. I think as it warms up we will see some numbers come out.

I do know I am impressed with the sound I get. I regularly hit 110 to 114db peaks at my normal listening volume during all the favorite test scenes. The subs don't sound like they are straining. I have to ask where are you trying to go DB wise.

As you said in either case you will have some great sound.

Bill

coming from a def tech pf1500tl I sure hope the one i decide knocks my socks off, and fillings out!

That's too bad, cause I missed them and this stuff is very interesting.

Me? This isn't about my needs; it's about the OP's. I'd be extremely happy with one HSU or one SVS.

I think Tim has the thread confused with a similar thread that was goes back a bit.

If i started using one of these two subs, would i want to completely eliminate my def tech pf1500tl or use it along with the svs or hsu in a dual sub setup?

More subs the better in my books!!

I like that idea. Subwoofers in books! You turn the page and it rumbles.

I had / have a Def Tech pf15tl. I tried it with my ULF-15 both in a single configuration and dual drive. You will not want to use it. It is striking what a sloppy mess the Def Tech is, I hooked it up with the "more the better" theory and bailed quickly. The HSU is so tight that the Definitive stands out in a bad way.

I'll sell you the Definitive if you are interested.

In not as simple as that. But yes, when implemented properly, the more the merrier.

Of course!

[quote=t6902wf;16119269]I had / have a Def Tech pf15tl. I tried it with my ULF-15 both in a single configuration and dual drive. You will not want to use it. It is striking what a sloppy mess the Def Tech is, I hooked it up with the "more the better" theory and bailed quickly. The HSU is so tight that the Definitive stands out in a bad way.

I'll sell you the Definitive if you are interested.[/QUOT

no thanks, why would i want the other one, trying to decide on a svs or hsu big boy sub

How do you figure it to be a 'deal breaker'? If the Hsu doesn't work for you (and it's a public spectrum, so ANY wireless subwoofer is going to have the same interference problems - that's the joy of an unlicensed spectrum), then you use a cable.