HSU ULS-15, no love? - AVS Forum
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post #1 of 134 Old 05-16-2013, 01:18 AM - Thread Starter
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How come this sub gets very little to almost no love on AVS when people ask for sub recommendations?
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post #2 of 134 Old 05-16-2013, 01:25 AM
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Maybe because there's other sealed subs that offer the same performance for a lot less money.

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post #3 of 134 Old 05-16-2013, 04:51 AM
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Quote:
Originally Posted by jbrown15 View Post

Maybe because there's other sealed subs that offer the same performance for a lot less money.

this and currently even with the uls15 on sale it still cost 1124.00 shipped. If I am spending that coin I would be getting a xs30 instead for another 25.00. being the psa has twice the cone surface and double the rms power i would expect quite a significant output adavantage and deeper extension. of course this is speculation based on what info is qvailable between the 2.
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post #4 of 134 Old 05-16-2013, 04:56 AM
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... the psa has ... double the rms power ...
According to their respective product pages:
- the PSA XS30 has a 725W RMS amp; and
- the HSU ULS-15 has a 1000W RMS amp.

-- Edit --
Hmmm...just noticed that the HSU's RMS power is "short-term". I checked the owner's manual, but it has the same spec.
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post #5 of 134 Old 05-16-2013, 05:06 AM
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Quote:
Originally Posted by eljaycanuck View Post

According to their respective product pages:
- the PSA XS30 has a 725W RMS amp; and
- the HSU ULS-15 has a 1000W RMS amp.

-- Edit --
Hmmm...just noticed that the HSU's RMS power is "short-term". I checked the owner's manual, but it has the same spec.

short term is not rms, that peak.
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post #6 of 134 Old 05-16-2013, 05:16 AM
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Well, if you're in the market for a sealed 15" sub then there are better options. Unless you're only concern is space limitation, in which case the HSU would be a good place to look.

As mentioned before, most looking to buy a sealed 15" setup could/should look to the PSA XS30.

At the same time though, it's extremely easy to build a sealed 15" setup now considering you can buy pre-made flat pack enclosures. You can build an equivalent sealed 15" setup for under $600 now. That includes the driver, amp, enclosure kit, and any extra pieces you may need.

So for the price of a single HSU ULS-15 you can either pick up a PSA XS30 or build two sealed 15"s and power it easily with an iNuke3000dsp.

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post #7 of 134 Old 05-16-2013, 05:18 AM
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Quote:
short term is not rms, that peak.
Yup - that's why I updated my post. smile.gif I wonder why they didn't list the "continuous" RMS spec, like they do for their other subs.
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post #8 of 134 Old 05-16-2013, 05:24 AM
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Quote:
Originally Posted by Louquid View Post

Well, if you're in the market for a sealed 15" sub then there are better options. Unless you're only concern is space limitation, in which case the HSU would be a good place to look.

As mentioned before, most looking to buy a sealed 15" setup could/should look to the PSA XS30.

At the same time though, it's extremely easy to build a sealed 15" setup now considering you can buy pre-made flat pack enclosures. You can build an equivalent sealed 15" setup for under $600 now. That includes the driver, amp, enclosure kit, and any extra pieces you may need.

So for the price of a single HSU ULS-15 you can either pick up a PSA XS30 or build two sealed 15"s and power it easily with an iNuke3000dsp.

good point...diy is always the best route if thats your cup of tea.
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post #9 of 134 Old 05-16-2013, 05:25 AM
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Quote:
Originally Posted by eljaycanuck View Post

Yup - that's why I updated my post. smile.gif I wonder why they didn't list the "continuous" RMS spec, like they do for their other subs.

Maybe they were afraid it would look weak. It's a bit strange that HSU would withhold information like that though, just to ensure it would keep selling.

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post #10 of 134 Old 05-16-2013, 05:28 AM
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Originally Posted by basshead81 View Post

good point...diy is always the best route if thats your cup of tea.

Yeah. And really if you can pick up the flat pack it's barely DIY. The hard part is designing the enclosure, cutting the wood, and building it. Most of that is done for you now.

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post #11 of 134 Old 05-16-2013, 05:30 AM
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Quote:
Originally Posted by Louquid View Post

Maybe they were afraid it would look weak. It's a bit strange that HSU would withhold information like that though, just to ensure it would keep selling.

Part of the reason I didnt buy subs from them...also back in 2008 pete said the new website was going to include measurement numbers with all subs. 5yrs later I have yet to see any unless Im looking in the wrong spot?
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post #12 of 134 Old 05-16-2013, 06:50 AM
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The ULS 15 is for when you want lots of output and high sound quality from a sub that can go into a lot more places because of the smaller size, higher WAF, and wireless connectivity (I use my ULS-15s as desktop speakers). You can get get more output from larger subs for roughly the same price. The output level can be roughly that of a VTF3, so it is not shy in loudness. It has other features such as a ULF Trim, XLR inputs, and a pretty serious XBL^2 driver, so it's a pretty deluxe sealed 15". If you want substantially better from a sealed 15", you have to move up quite a bit in price range, up to a Velodyne DD15 or Paradigm Sub 25. I think the continuous RMS power is somewhere between 500 and 600 watts, my guess is 550.
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post #13 of 134 Old 05-16-2013, 07:36 AM
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Quote:
Originally Posted by shadyJ View Post

The ULS 15 is for when you want lots of output and high sound quality from a sub that can go into a lot more places because of the smaller size, higher WAF, and wireless connectivity (I use my ULS-15s as desktop speakers). You can get get more output from larger subs for roughly the same price. The output level can be roughly that of a VTF3, so it is not shy in loudness. It has other features such as a ULF Trim, XLR inputs, and a pretty serious XBL^2 driver, so it's a pretty deluxe sealed 15". If you want substantially better from a sealed 15", you have to move up quite a bit in price range, up to a Velodyne DD15 or Paradigm Sub 25. I think the continuous RMS power is somewhere between 500 and 600 watts, my guess is 550.

Or you can build a pair of sealed Ultimax 15"s for less than the cost of the ULS-15, and have equal or better SQ, better in room response, and much higher output levels. Only thing lacking here is the more compact size of the ULS-15 and wireless connectivity. Really, you can get more output from larger subs at less than half the price. I'm thinking that a sealed Ultimax 15" alone would best the ULS-15. Wish someone could do actual comparisons here though.

It seems the ULS-15's selling point is it's small size and high WAF.

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post #14 of 134 Old 05-16-2013, 07:54 AM
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You can always build a more powerful sub than whatever is on the market... if you have the tools and the woodworking skills. Don't forget that many of the subs on the market isn't just slapping a driver in a box and connecting them to a amp. You get a nice finish, you get built-in limiters and equalization, and all the features and connectivity that the ULS has. If you added all that into your DIY project, the costs do mount. This is all neglecting the costs in time as well. The ULS-15 is a bargain if you would rather skip that project. This argument has been done to death against the JL Audio subs too.
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post #15 of 134 Old 05-16-2013, 08:15 AM
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Quote:
Originally Posted by shadyJ View Post

You can always build a more powerful sub than whatever is on the market... if you have the tools and the woodworking skills. Don't forget that many of the subs on the market isn't just slapping a driver in a box and connecting them to a amp. You get a nice finish, you get built-in limiters and equalization, and all the features and connectivity that the ULS has. If you added all that into your DIY project, the costs do mount. This is all neglecting the costs in time as well. The ULS-15 is a bargain if you would rather skip that project. This argument has been done to death against the JL Audio subs too.

But with flat-packs the design work is literally done for you. All you have to do is glue the pieces together, clamp them down, then finish them however you like. Commercial subs aren't the only subs that can have impressive finishes. It takes time and work, but alot of people in DIY enjoy it. You could literally buy every tool you need to build your own box, and still come out under the cost of the ULS-15.

Most subs on the market are just drivers thrown in boxes connected to an amp. They usually have paper veneer finishes and high tunes. The minority of higher quality commercial subs are the one's you're talking about. Where companies take their time to actually design the subwoofers from the driver to the amp and add beautiful finishes.

The iNuke3000dsp would provide tons of power and the ability to eq specifically to your room's response. Rather than getting a pre-eq'd sub, you now can tune it to sound it's best in your room. Throw in some measuring gear and you're still under budget.

I'm not saying the ULS-15 isn't impressive, because it is. I'm just trying to say that I think the ULS-15 isn't mentioned much on here because there are other options that usually come up first. Most people are Ok with a larger sub and aren't space limited, so the ULS-15 is sometimes pushed to the side.

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post #16 of 134 Old 05-16-2013, 08:15 AM
 
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In my opinion, the short version, the ULS-15 lacks value for what you get.
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post #17 of 134 Old 05-16-2013, 08:18 AM
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Originally Posted by BeeMan458 View Post

In my opinion, the short version, the ULS-15 lacks value for what you get.

This is one way to put it.

But I think it really just lacks what many people value the most. High output low frequency extension for a reasonable price. This subwoofer is built for people who value the compact size, functionality, and WAF, the most.

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post #18 of 134 Old 05-16-2013, 10:17 AM
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Quote:
Originally Posted by BeeMan458 View Post

In my opinion, the short version, the ULS-15 lacks value for what you get.

I don't know what subs you own, but unless they are well executed DIY subs, they are not likely to be any better of a value.
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post #19 of 134 Old 05-16-2013, 10:59 AM
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Hi there,

The RMS rating for the ULS-15 amplifier is 600 watts.

Sincerely,
Kevin
Hsu Research Team
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post #20 of 134 Old 05-16-2013, 11:39 AM
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how would a rythmik e15hp compare to a uls15?
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post #21 of 134 Old 05-16-2013, 02:05 PM
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Quote:
Originally Posted by basshead81 View Post

short term is not rms, that peak.

Short term rms means for a few seconds, which is enough for most music. Peak voltage that the ULS amp can put out is over 100V, which is over 2500W peak into the nominal 4 ohm woofer.
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post #22 of 134 Old 05-16-2013, 03:49 PM
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why not just list standard power numbers like everybody else does? also some output numbers would be nice...those 2 factors alone might of netted ya a 2k sale. I have been eyeing your products for several years dating back to the turbo. however due to the confusing power ratings and lack of output info kind of pushed me towards anoher product. I mean no disrespect just some constructive criticism. I was really impressed with hsu customer service when it came down to answering questions.
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post #23 of 134 Old 05-16-2013, 05:45 PM
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The ULS 15 has the numbers posted on its site, 600 watts, 1200 short term.
It's to the right of the page when you click on a subwoofer model.
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post #24 of 134 Old 05-16-2013, 05:48 PM
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Also output for most of hsu subwoofers is fairly easy to source
Start here: www.google.com
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post #25 of 134 Old 05-16-2013, 05:52 PM
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Quote:
Originally Posted by deepat04 View Post

The ULS 15 has the numbers posted on its site, 600 watts, 1200 short term.
It's to the right of the page when you click on a subwoofer model.
You mean where it says "Power Outlet Requirement"?
Quote:
Power Outlet Requirement | 600W Continuous, 1200W Short Term

That refers (or should refer) to the amp's power consumption, not its power output. Where you should be looking is further up, where it says:
Quote:
Amplifier Power (RMS) | 1000W Short Term

And that's where there should be two ratings, just as there are for HSU's other subs, such as the VTF-15H:
Quote:
Amplifier Power (RMS) | 1400 W Short Term, 350 W Continuous
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post #26 of 134 Old 05-16-2013, 06:54 PM
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Quote:
Originally Posted by deepat04 View Post

Also output for most of hsu subwoofers is fairly easy to source
Start here: www.google.com

thank you smart ass i already tried that...since you are so smart why not post the links? also 1200watts short term is not a standard rating. please reread my post and take some time to comprehend what i am saying before you post. fwiw most output numbers posted on these subs are not legit. i posted some i found the other day that i found on audioholics website and was told they were bogus. it would be nice if companies would list measurement and output number right on the web page like PSA does.
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post #27 of 134 Old 05-16-2013, 06:55 PM
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Quote:
Originally Posted by eljaycanuck View Post

You mean where it says "Power Outlet Requirement"?
That refers (or should refer) to the amp's power consumption, not its power output. Where you should be looking is further up, where it says:
And that's where there should be two ratings, just as there are for HSU's other subs, such as the VTF-15H:

exactly!
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post #28 of 134 Old 05-16-2013, 07:17 PM
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The XS30 seems to be a popular choice around here, but looking at the specs on the HSU site, and comparing to the graph on the PSA site, the ULS15 is down only 1 dB at 15 hz, whereas the XS30 is down 5 dB at 20 hz, and down 10 or 11 dB at 15 hz. That suggests the ULS15 has substantially better low end extension.
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post #29 of 134 Old 05-16-2013, 07:20 PM
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post #30 of 134 Old 05-16-2013, 07:54 PM
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Thanks but that link shows nothing about max spl numbers from what I seen?
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