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UXL-18 Subwoofer driver Group Buy (is now closed out/over/done/fini) !!!! - Page 6

post #151 of 1320
I have 4-Ulimax 18's pre-ordered.......

If this group buy falls through then I won't be a happy camper especially if I cancel my PA order! I received pricing of less than $250 per driver.......

I'm going against my better judgement considering this driver due attempting to contact UXL vender yet never getting a response.

I want/need drivers that fit in Diysoundgroup boxes that come close to JTR S2 driver parameters.

Pdxrealtor.....I'm 60+ miles from you so am interested in Peaveys.

Ok, I will commit to two drivers and can send money ASAP when I'm back from Berlin......first of next week. Only have phone now and it sucks!!
post #152 of 1320
Quote:
Originally Posted by fr8doggr View Post

I have been considering dual Rythmik FV15HPs, but lately I have been thinking of going the DIY route. This option seems particularly suited for my open basement HT (8000CF). Can someone comment on a few concerns:

1. How would dual sealed UXL-18s using the DIYSoungroup flat pack measure compared to the dual Rythmik FV15HPs?

2. The UXL site lists the dimensions for building a ported enclosure with a 2 inch slot port at the bottom. Does anybody have any experience building something like this? How would this ported design compare to the performance of the Rythmiks?

3. If I did build the ported enclosures, can someone recommend which amp would be appropriate? Would seperate amps be required?

Sorry I seem to circle all my comparisons back to the Rythmiks, but it seems to be the top dog of commercial options - especially for such a large space as I have. I am hoping this DIY option will give me better performance at the same (or slightly lower) pricepoint for my HT.

Okay so here goes, and I'm sure someone else will chime in too.

1. If we take a look at the data-bass.com web site and compare the UXL-18 driver and FV15HP max burst numbers we can see that at 20hz a UXL-18 in a sealed enclosure would have the same amount of output as a FV15HP. Above 20hz the UXL-18 has about a 1-2dB advantage until you get to 40hz, above 40hz it really starts to pull away and you'd need at least two FV15HP's to even come close to one UXL-18 driver.

Below 20hz the FV15HP holds about a 2dB advantage over the UXL-18 until you get down to 12.5hz, at which point the FV15HP pretty much signs off and the UXL-18 keeps going.

2. In a ported design I would have to believe the UXL-18 would outperform a FV15HP if built properly and powered with enough amp.
Here's a graph simulation on a design that I'm looking at using for dual UXL-18's. The enclosure will be 22cu.ft and tuned to 15hz and powered by a inuke 6000.


So if you used a single inuke 3000 to power a single UXL-18 and built a 11cu.ft enclosure I would think you could minus -6dB from that graph to give you a good idea of what a single UXL-18 could do.

3. If you were building two a inuke 6000 would easily power them or take a look at a Peavey IPR 7500, either way you'll probably have to do a fan mod. Which is also pretty easy to do too.
post #153 of 1320
So I took a stab at modeling the UXL-18 vs. the forthcoming Dayton Ultimax 18" in WinISD in my 3.5 cubic foot sealed box.

This is one driver from each vendor in a single 3.5 cubic foot box - each driven by 2000 watts.
Here's what WinISD came up with given the parameters I entered for both drivers. For those of you with more modeling knowledge...Does this look about right?



If I did this right - It looks like you give up a couple dB at 10hz with the Ultimax, they are pretty equitable at 20hz, and at the higher frequencies the Ultimax will have less output. This is just a comparison I'm specifically curious about, because like doublewing11, I do already have a pre-order in for four Ultimax 18's.
post #154 of 1320
Can someone do a graph of a uxl18 in a sealed 4.0 cu vs a ported 8cu ft tuned to 18hz ? Would love to have the smaller size but want to see how many db's I would be leaving on the table. I can do a sketchup modelling scene for you, if needed. cool.gif
post #155 of 1320
Can the Ultimax take 2000 watts?
post #156 of 1320
Quote:
Originally Posted by jbrown15 View Post

Okay so here goes, and I'm sure someone else will chime in too.

1. If we take a look at the data-bass.com web site and compare the UXL-18 driver and FV15HP max burst numbers we can see that at 20hz a UXL-18 in a sealed enclosure would have the same amount of output as a FV15HP. Above 20hz the UXL-18 has about a 1-2dB advantage until you get to 40hz, above 40hz it really starts to pull away and you'd need at least two FV15HP's to even come close to one UXL-18 driver.

Below 20hz the FV15HP holds about a 2dB advantage over the UXL-18 until you get down to 12.5hz, at which point the FV15HP pretty much signs off and the UXL-18 keeps going.

2. In a ported design I would have to believe the UXL-18 would outperform a FV15HP if built properly and powered with enough amp.
Here's a graph simulation on a design that I'm looking at using for dual UXL-18's. The enclosure will be 22cu.ft and tuned to 15hz and powered by a inuke 6000.


So if you used a single inuke 3000 to power a single UXL-18 and built a 11cu.ft enclosure I would think you could minus -6dB from that graph to give you a good idea of what a single UXL-18 could do.

3. If you were building two a inuke 6000 would easily power them or take a look at a Peavey IPR 7500, either way you'll probably have to do a fan mod. Which is also pretty easy to do too.

At 20 it would take close to 3 FVHP in the 1 port mode and dual at 12hz. I would bet the LTD/UXL rig would handle things much better also.. chuffity chuff-chuff smile.gif
Edited by steve nn - 12/26/13 at 12:57pm
post #157 of 1320
Also keep in mind that the UXL graphs on data-bass.com are just the raw driver with a ton of power. No signal shaping has occurred, whereas the Rhythmik already comes with EQ.
post #158 of 1320
Quote:
Originally Posted by chalugadp View Post

Can someone do a graph of a uxl18 in a sealed 4.0 cu vs a ported 8cu ft tuned to 18hz ? Would love to have the smaller size but want to see how many db's I would be leaving on the table. I can do a sketchup modelling scene for you, if needed. cool.gif

Don't entirely know what I'm doing - so there's that disclaimer out of the way. tongue.gif - but here is what ISD shows by default when I put your parameters in with the UXL-18 parameters entered at 2k watts.

Note - Excursion below 15hz on the ported 8 cubic foot cabinet is going to get you into trouble quick if you don't have a HPF in place with the 2000 watts. It's flying up like an arrow into the noon day sun!

Sealed UXL-18 4 cubic foot vs. Ported UXL-18 8 cubic foot tuned to 18hz - both at 2k watts.

Check out the excursion graph on the ported.
post #159 of 1320
Thread Starter 
^^^^UXL Marty Sub! UXL Marty Sub!!!!
post #160 of 1320
Thread Starter 
Added Keithbanford and doublewing11 to list of commitments.

Rebel1975...I will mark you down as a commitment if you can pay by mid-February. Please confirm.

Nuno C...specs were confirmed by members, but I am still waiting on Mark to confirm shipping weight and diameter.

fr8doggr...I was not clear if you wanted to commit to any??? Please let me know. I thought I had a lot of volume at about 4000...whoa, Nellie! 8000? Forget two subs...let's get you into four and really fill that area up a little better!
post #161 of 1320
Quote:
Originally Posted by wth718 View Post

Also keep in mind that the UXL graphs on data-bass.com are just the raw driver with a ton of power. No signal shaping has occurred, whereas the Rhythmik already comes with EQ.

True, but lets be honest here. The UXL-18 driver is in a different league then a FV15HP driver as far as raw output for HT use and we're talking about powering it with over 1500watts compared to 600watts from the amp in the FV15HP. I personally think the FV15HP is one of the top commercial subs under $1500. But trying to compare it with a probably designed ported UXL-18 is like putting Floyd Mayweather against Mike Tyson in his prime.

At the end of the day physics are physics.
post #162 of 1320
Quote:
like putting Floyd Mayweather against Mike Tyson in his prime.

Nobody takes out Tyson in his prime, man those were good fights albeit short. Hardly had time to down a beer! mad.gif
post #163 of 1320
Quote:
Originally Posted by blah450 View Post

Rebel1975...I will mark you down as a commitment if you can pay by mid-February. Please confirm.



Go ahead and mark me down for one. I will be filing for my refund the first day you can. Feb 15th should be just fine.
post #164 of 1320
Info on the Peavy IPR buy can be found here- http://www.avsforum.com/t/1507824/peavy-ipr2-group-buy/0_100

Blah- am I understanding correctly that the ship date has now been pushed back two weeks???
post #165 of 1320
Okay so here goes, and I'm sure someone else will chime in too.

1. If we take a look at the data-bass.com web site and compare the UXL-18 driver and FV15HP max burst numbers we can see that at 20hz a UXL-18 in a sealed enclosure would have the same amount of output as a FV15HP. Above 20hz the UXL-18 has about a 1-2dB advantage until you get to 40hz, above 40hz it really starts to pull away and you'd need at least two FV15HP's to even come close to one UXL-18 driver.

Below 20hz the FV15HP holds about a 2dB advantage over the UXL-18 until you get down to 12.5hz, at which point the FV15HP pretty much signs off and the UXL-18 keeps going.

2. In a ported design I would have to believe the UXL-18 would outperform a FV15HP if built properly and powered with enough amp.
Here's a graph simulation on a design that I'm looking at using for dual UXL-18's. The enclosure will be 22cu.ft and tuned to 15hz and powered by a inuke 6000.


So if you used a single inuke 3000 to power a single UXL-18 and built a 11cu.ft enclosure I would think you could minus -6dB from that graph to give you a good idea of what a single UXL-18 could do.

3. If you were building two a inuke 6000 would easily power them or take a look at a Peavey IPR 7500, either way you'll probably have to do a fan mod. Which is also pretty easy to do too.[/quote]





So, assuming your model is accurate and I subtract 6 db to get an idea what the UXL will look like in a typical Marty (11 cu ft), then the UXL is only about one db better than the SI18 at 20 hz. I know quantity isn't the only important aspect but I was expecting a bit more of a difference between the two. Check out LTD's model of the SI18 in a Marty box.

post #166 of 1320
Ricci mentioned he intends to measure the Ultimax 18 in his forum. As for a comparison for total SPL, honestly, who cares at this point, I care a lot more for how cleanly these things can play below xmax. It's a shame that we don't have the THD output sweeps for the UXL-18. If I had any I am not sure I would want to feed them the max RMS handling, that is a lot of power just to push them to a point where they end up with a lot of distortion anyway.
post #167 of 1320
Quote:
Originally Posted by atabea View Post

Okay so here goes, and I'm sure someone else will chime in too.

1. If we take a look at the data-bass.com web site and compare the UXL-18 driver and FV15HP max burst numbers we can see that at 20hz a UXL-18 in a sealed enclosure would have the same amount of output as a FV15HP. Above 20hz the UXL-18 has about a 1-2dB advantage until you get to 40hz, above 40hz it really starts to pull away and you'd need at least two FV15HP's to even come close to one UXL-18 driver.

Below 20hz the FV15HP holds about a 2dB advantage over the UXL-18 until you get down to 12.5hz, at which point the FV15HP pretty much signs off and the UXL-18 keeps going.

2. In a ported design I would have to believe the UXL-18 would outperform a FV15HP if built properly and powered with enough amp.
Here's a graph simulation on a design that I'm looking at using for dual UXL-18's. The enclosure will be 22cu.ft and tuned to 15hz and powered by a inuke 6000.


So if you used a single inuke 3000 to power a single UXL-18 and built a 11cu.ft enclosure I would think you could minus -6dB from that graph to give you a good idea of what a single UXL-18 could do.

3. If you were building two a inuke 6000 would easily power them or take a look at a Peavey IPR 7500, either way you'll probably have to do a fan mod. Which is also pretty easy to do too.





So, assuming your model is accurate and I subtract 6 db to get an idea what the UXL will look like in a typical Marty (11 cu ft), then the UXL is only about one db better than the SI18 at 20 hz. I know quantity isn't the only important aspect but I was expecting a bit more of a difference between the two. Check out LTD's model of the SI18 in a Marty box.

[/quote]

No that doesn't really make sense too me because if we just compare the numbers from data-bass on the two drivers the UXL-18 has pretty much a 4dB advantage over a SI 18 from 50hz and down. So that would suggest you'd need just over 1.5 SI 18's to equal one UXL-18.
post #168 of 1320
Quote:
Originally Posted by shadyJ View Post

Ricci mentioned he intends to measure the Ultimax 18 in his forum. As for a comparison for total SPL, honestly, who cares at this point, I care a lot more for how cleanly these things can play below xmax. It's a shame that we don't have the THD output sweeps for the UXL-18. If I had any I am not sure I would want to feed them the max RMS handling, that is a lot of power just to push them to a point where they end up with a lot of distortion anyway.

I'm told by forum member N8DOGG who has a lot of experience with the UXL-18 and FTW-21 drivers that both can easily handle 2000watts.
post #169 of 1320
"No that doesn't really make sense too me because if we just compare the numbers from data-bass on the two drivers the UXL-18 has pretty much a 4dB advantage over a SI 18 from 50hz and down. So that would suggest you'd need just over 1.5 SI 18's to equal one UXL-18."

I noticed that too on the data bass site, however, those were done in sealed boxes so not sure how things would change with a large ported enclosure such as the Marty.
post #170 of 1320
I'll take one. No logo. Thanks for doing this, great price!
post #171 of 1320
I think one big advantage of the UXL over the SI or Dayton HO is going to be the quality of the bass.

I've heard tons of car audio drivers. Three JL Audio 12" value woofs might have the same output as their premium driver. But the sound is so much better from the premium driver.
post #172 of 1320
Quote:
Originally Posted by pdxrealtor View Post

I think one big advantage of the UXL over the SI or Dayton HO is going to be the quality of the bass.

I've heard tons of car audio drivers. Three JL Audio 12" value woofs might have the same output as their premium driver. But the sound is so much better from the premium driver.

You think the UXL will have better quality bass than the Dayton Reference? I have no idea, that's why I'm asking. I know that in the car audio ring that the dayton HO is known as one of the best when it comes to SQ. I know many who prefer to the w7, idmax, morel ultimo, ect.

I'll be purchasing 4 um 18s even though their specs are in the are. I can get them for $217 each but was tempted to give the UXL a try. If it had dropped to $375 each I may have. Here is to hoping the um specs out to 30mm xmax and has distortion numbers low like the uber drivers.

Dan

Ps I'm going to send you a pm.
post #173 of 1320
Quote:
Originally Posted by saabracer23 View Post

You think the UXL will have better quality bass than the Dayton Reference? I have no idea, that's why I'm asking. I know that in the car audio ring that the dayton HO is known as one of the best when it comes to SQ. I know many who prefer to the w7, idmax, morel ultimo, ect.

I'll be purchasing 4 um 18s even though their specs are in the are. I can get them for $217 each but was tempted to give the UXL a try. If it had dropped to $375 each I may have. Here is to hoping the um specs out to 30mm xmax and has distortion numbers low like the uber drivers.

Dan

Ps I'm going to send you a pm.

I have never heard a Dayton, and I never once heard anyone in car audio want anything to do with Dayton. That was over 10 years ago. Sounds like things have changed.

A w-7, IMO, it top tier. At least it was back when I was playing with them.

The beefier the driver the more they seem to cost. In my experience the beefier drivers that cost more $$ produce better base.
post #174 of 1320
Quote:
Originally Posted by saabracer23 View Post

You think the UXL will have better quality bass than the Dayton Reference? I have no idea, that's why I'm asking. I know that in the car audio ring that the dayton HO is known as one of the best when it comes to SQ. I know many who prefer to the w7, idmax, morel ultimo, ect.

I'll be purchasing 4 um 18s even though their specs are in the are. I can get them for $217 each but was tempted to give the UXL a try. If it had dropped to $375 each I may have. Here is to hoping the um specs out to 30mm xmax and has distortion numbers low like the uber drivers.

Dan

Ps I'm going to send you a pm.

How are you getting the UM18-22's for $217ea? And I thought the Xmax on the UM18 was only 22mm? Now I'm really confused.
post #175 of 1320
Quote:
Originally Posted by Archaea View Post

Quote:
Originally Posted by chalugadp View Post

Can someone do a graph of a uxl18 in a sealed 4.0 cu vs a ported 8cu ft tuned to 18hz ? Would love to have the smaller size but want to see how many db's I would be leaving on the table. I can do a sketchup modelling scene for you, if needed. cool.gif

Don't entirely know what I'm doing - so there's that disclaimer out of the way. tongue.gif - but here is what ISD shows by default when I put your parameters in with the UXL-18 parameters entered at 2k watts.

Note - Excursion below 15hz on the ported 8 cubic foot cabinet is going to get you into trouble quick if you don't have a HPF in place with the 2000 watts. It's flying up like an arrow into the noon day sun!

Sealed UXL-18 4 cubic foot vs. Ported UXL-18 8 cubic foot tuned to 18hz - both at 2k watts.

Check out the excursion graph on the ported.

Thanks dude ,
Looks like ported it is. The 8cu ft box is 16" shorter then Marty which is what I need. Not willing to give up a dozen dbs. I sure hope this buy goes through . wink.gif
post #176 of 1320
Quote:
Originally Posted by jbrown15 View Post

How are you getting the UM18-22's for $217ea? And I thought the Xmax on the UM18 was only 22mm? Now I'm really confused.

Wholesale account with PE. It was mentioned earlier that with Dayton's testing parameters that the true xmax is actually closer to 25mm and that it may actually test out higher once Ricci has a chance to test it. Just like the HO is underrated, though I doubt the UM18 will be that underrated.
post #177 of 1320
Quote:
Originally Posted by doublewing11 View Post

I have 4-Ulimax 18's pre-ordered.......

If this group buy falls through then I won't be a happy camper especially if I cancel my PA order! I received pricing of less than $250 per driver.......

I'm going against my better judgement considering this driver due attempting to contact UXL vender yet never getting a response.

I want/need drivers that fit in Diysoundgroup boxes that come close to JTR S2 driver parameters.

Pdxrealtor.....I'm 60+ miles from you so am interested in Peaveys.

Ok, I will commit to two drivers and can send money ASAP when I'm back from Berlin......first of next week. Only have phone now and it sucks!!

So are you going from 4 UM18s to 2 UXLs? That would be a smart move if you're wanting to save a little money at the expense of output. Go for 4 UXLs!

You have a pm

Dan
post #178 of 1320
Quote:
Originally Posted by saabracer23 View Post

Wholesale account with PE. It was mentioned earlier that with Dayton's testing parameters that the true xmax is actually closer to 25mm and that it may actually test out higher once Ricci has a chance to test it. Just like the HO is underrated, though I doubt the UM18 will be that underrated.

Any idea when Ricci is going to have a UM18 tested?
post #179 of 1320
Quote:
pd The beefier the driver the more they seem to cost. In my experience the beefier drivers that cost more $$ produce better base.

I dunno? I swear my 12-15” SDX’s have better SQ though. Whether that’s true? it could be argued. The 12” is a 40 pound driver itself. I haven't played enough with my larger drivers to comment though.
post #180 of 1320
Quote:
Originally Posted by steve nn View Post

I dunno? I swear my 12-15” SDX’s have better SQ though. Whether that’s true? it could be argued. The 12” is a 40 pound driver itself. I haven't played enough with my larger drivers to comment though.

I play with my large driver all the time tongue.gif:p:p
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