or Connect
AVS › AVS Forum › Audio › DIY Speakers and Subs › What amp for 2-4 UXL-18's?
New Posts  All Forums:Forum Nav:

What amp for 2-4 UXL-18's?

post #1 of 50
Thread Starter 
Hey everyone,

I'm looking at buying an amp for some UXL-18's. I'll only have one at first, but my ultimate goal is to have 4 of them. To that end, I'll need an amp that can do either 4 x 1200 watts @ 4 ohms, or 2 x 2400 watts @ 2 ohms.

I was looking at the NU6000, but it's not rated for 2 ohms. I was also looking at the Peavey IPR 5000/7500, but it seems like those will never actually be released. As for LG clones - I'd really rather not. I'm not comfortable with the whole process. Especially if something were to break.

With that in mind, what are some good options? Get a single NU6000 to power 2 UXL-18's and then another one if/when I need more subwoofers in the future?

Thanks guys. smile.gif
post #2 of 50
Quote:
Originally Posted by Rebel975 View Post


With that in mind, what are some good options? Get a single NU6000 to power 2 UXL-18's and then another one if/when I need more subwoofers in the future?

This!



P.S. You'd be better off with a FP10000Q but since you're not confy with that option....
post #3 of 50
Thread Starter 
Quote:
Originally Posted by Freniata View Post

P.S. You'd be better off with a FP10000Q but since you're not confy with that option....


I know, I know. It's just that the whole ordering process makes me nervous. And from the few pages I've read of the LG clone thread they don't exactly appear to be very reliable. Maybe I'm wrong? I guess I'll look in to it some more.

Are there any other options?
Edited by Rebel975 - 3/30/13 at 2:17pm
post #4 of 50
Quote:
Originally Posted by Rebel975 View Post

Hey everyone,

I'm looking at buying an amp for some UXL-18's. I'll only have one at first, but my ultimate goal is to have 4 of them. To that end, I'll need an amp that can do either 4 x 1200 watts @ 4 ohms, or 2 x 2400 watts @ 2 ohms.

I was looking at the NU6000, but it's not rated for 2 ohms. I was also looking at the Peavey IPR 5000/7500, but it seems like those will never actually be released. As for LG clones - I'd really rather not. I'm not comfortable with the whole process. Especially if something were to break.

With that in mind, what are some good options? Get a single NU6000 to power 2 UXL-18's and then another one if/when I need more subwoofers in the future?

Thanks guys. smile.gif

With those subs, I'm assuming you're going to be building sealed cabinets. If that is in fact what you're planning, I would look elsewhere for power. The NU6000 (and, likely all amps in that family) roll off significantly below 10hz, thereby largely invalidating the benefits of a sealed configuration.

See this post and the few following it regarding the NU6000's roll off. http://www.avsforum.com/t/1435795/first-diy-project-for-a-guy-looking-to-upgrade-multiple-sealed-18s/900#post_23080227

Unfortunately, your best bet is likely the FP10000Q. Perhaps those are less of a risk than the FP14000 model? I can't say, but maybe ask in the clones thread.

You'll also likely want EQ and/or a custom L/T circuit. The MiniDSP 2x4 balanced (and 2.1 biquad advanced plugin) serves for EQ quite well. I don't know of anyone besides bosso who is building custom L/Ts. Hope that helps
post #5 of 50
Actually the fp10000's seem to be even more failure prone than the 14000's. Another option would be a cv5000 powering all 4. In that case each sub would receive 1250 watts.
post #6 of 50
Thread Starter 
Quote:
Originally Posted by nube View Post

With those subs, I'm assuming you're going to be building sealed cabinets. If that is in fact what you're planning, I would look elsewhere for power. The NU6000 (and, likely all amps in that family) roll off significantly below 10hz, thereby largely invalidating the benefits of a sealed configuration.

See this post and the few following it regarding the NU6000's roll off. http://www.avsforum.com/t/1435795/first-diy-project-for-a-guy-looking-to-upgrade-multiple-sealed-18s/900#post_23080227


Yes, they'll all be sealed cabinets. In fact, I already have a (mostly) finished 4 cu ft box ready for one. I just need the driver to get here.

Thanks for mentioning the significant roll off. I knew about it before, but hadn't really taken it seriously.


Quote:
Originally Posted by nube 
You'll also likely want EQ and/or a custom L/T circuit. The MiniDSP 2x4 balanced (and 2.1 biquad advanced plugin) serves for EQ quite well. I don't know of anyone besides bosso who is building custom L/Ts. Hope that helps


Sorry- what's a L/T circuit?



Quote:
Originally Posted by tsloms View Post

Actually the fp10000's seem to be even more failure prone than the 14000's. Another option would be a cv5000 powering all 4. In that case each sub would receive 1250 watts.


83.3 lbs... holy crap. I'll check it out. Thanks.
Edited by Rebel975 - 3/30/13 at 3:28pm
post #7 of 50
Thread Starter 
Quote:
Originally Posted by Rebel975 View Post

Sorry- what's a L/T circuit?.

It stands for Linkwitz Transform?

I have an Emotica UMC-1 that lets me EQ between 20-200 Hz on the subwoofer channel (-10dB to +10dB). Then I can increase the bass output as a whole by another 10dB. Would a mini dsp or Linkwitz Transform circuit be necessary?
post #8 of 50
Either a 10q clone or a ep2500 per woofer .
post #9 of 50
CV5000, add one more down the line. They got for around $800.
post #10 of 50
Thread Starter 
Quote:
Originally Posted by Dezmond View Post

Either a 10q clone or a ep2500 per woofer .


LG clones aren't an option for me, so that leaves the EP2500. They're $300 each on Amazon, or $1,200 for 4 UXL's. Seems kind of a waste, though. The subs are rated at 1200 watts (4 ohms). The EP2500 claims to do 2 x 1,000 Watts @ 2 Ohms; 2 x 750 Watts @ 4 Ohms; 2,000 Watts @ 4 Ohms (bridge mode). So I'd end up having to use it bridged, which would mean I'd have 800 watts of overhead per sub. I'm really new to this, so don't take this the wrong way, but- what's the point of having 2/3rds more power than the subs are rated for?

A single CV5000 at 2 x 2500 watts @ 2 ohms is a lot more attractive to me, especially considering the $7-800 price tag. One box vs four, less weight, the right amount of power, and a lower overall cost.
post #11 of 50
+1 on the cv5000 . i got 2 of them there great . only minus is fans are loud.
post #12 of 50
Thread Starter 
Quote:
Originally Posted by Dank1209 View Post

+1 on the cv5000 . i got 2 of them there great . only minus is fans are loud.


I have a NU3000DSP, and it had a pretty loud fan. I swapped it out for something quieter, though. Do you know if you can do the same on the CV5000?
post #13 of 50
Thread Starter 
Quote:
Originally Posted by Rebel975 View Post

It stands for Linkwitz Transform?

I have an Emotica UMC-1 that lets me EQ between 20-200 Hz on the subwoofer channel (-10dB to +10dB). Then I can increase the bass output as a whole by another 10dB. Would a mini dsp or Linkwitz Transform circuit be necessary?



Also- CV5000 fan swap - is it possible/advisable? Does anyone know if it's a 12v fan, or 24v?
post #14 of 50
24v.

I'll be doing a fan swap on the CV5000 soon, myself. Not sure if it will be soon enough for you but sometime in the next month. I haven't heard one but it's going to be close to my LP so I'm just going to do a swap.
post #15 of 50
Thread Starter 
Scott- That should be soon enough. I won't have the funds for the amp for at least that long, and I won't have the UXL-18 for at least twice as long. Definitely let me know what fan you end up with.

As for my other question: do I need a mini DSP when I can already do an 8 point EQ -20dB to +20dB in the 20-200Hz region?
post #16 of 50
Quote:
Originally Posted by Rebel975 View Post

Scott- That should be soon enough. I won't have the funds for the amp for at least that long, and I won't have the UXL-18 for at least twice as long. Definitely let me know what fan you end up with.

As for my other question: do I need a mini DSP when I can already do an 8 point EQ -20dB to +20dB in the 20-200Hz region?

Sure thing!

What EQ is that you have now?
post #17 of 50
Thread Starter 
I have an Emotiva UMC-1 that can do an 8 point EQ on each channel -10dB to +10dB, and then another -10dB to +10dB on each channel as a whole. The subwoofer channel is considered 20-200Hz, apparently.
post #18 of 50
Ah. Okay. Well... you're good in PEQ but with a sealed system you're going to want some shelving filter to bring up the low end. You may very well have to get a MDSP. Yeah, I know. More stuff. tongue.gif
post #19 of 50
Thread Starter 
More stuff indeed. I'm already pushing it big time with a CV5000 and UXL-18. I have to save up in order to afford this stuff. The way I justify it to my GF is that if I buy the nice stuff now I won't have to re-buy later. tongue.gif But if I need a minidsp, so be it. It's 'just' another ~$100. rolleyes.gif
post #20 of 50
The MDSP is a drop in the bucket compared to picking up the CV and/or four UXL18's. biggrin.gif

Isn't this one of your first DIY projects, if I'm correct? This will be a very potent system that even a crazy die-hard bass fanatic should be happy with for a long time. smile.gif
post #21 of 50
Thread Starter 
It's one of my first, yes. I'm only 24 eek.gif. So far I've done two RS621 kits (living room FL/FR/RL/RR), a RS722 kit (living room center), an Eton S7 kit (got the wood cut by a local guy with a CNC machine- game room FL/FR), a 2.25 cu flat pack with Epic 12" sub (living room sub, powered by a NU3000DSP- will add another Epic 12" in the future), and now I'm doing the 4 cu ft flat pack for a UXL-18 (game room). I'll only have the one UXL-18 at first, but want room to be able to have up to 4- hence the CV5000.

I've also got design plans for an Eton S7 MTM for FL/C/FR (make the normal S7's the RL/RR) in the game room... but that's way, way in the future. I'll need to move in to a real house first.

Really, I'm just getting started in this DIY world. But yeah, the mini dsp is chump change after what I've already spent, and what I'm looking at spending. I just... need the money first. lol tongue.gif
Edited by Rebel975 - 4/1/13 at 12:15pm
post #22 of 50
Guys. I checked the fan SPL rs meter. C weighted slow. At the front one foot from amp I got 62 db for 1 amp and 68 for 2 amps. That's 4 fans total. And I got 52 db at my 15 foot Lp. They look easy to change. I ran my amps hard for 2 hours . And they where cold.. just a fyi.
post #23 of 50
Thread Starter 
Quote:
Originally Posted by Dank1209 View Post

Guys. I checked the fan SPL rs meter. C weighted slow. At the front one foot from amp I got 62 db for 1 amp and 68 for 2 amps. That's 4 fans total. And I got 52 db at my 15 foot Lp. They look easy to change. I ran my amps hard for 2 hours . And they where cold.. just a fyi.


Nice. Thanks for the info. The amp would be < 5 feet from me, so I'll definitely want to swap out the fans for something quieter.
post #24 of 50
Good to know. Mine should be delivered today. My amp will also be within 5ft of me so I'll definitely start narrowing down a good fan. I will post it in here later.
post #25 of 50
Thread Starter 
Quote:
Originally Posted by Scott Simonian View Post

Good to know. Mine should be delivered today. My amp will also be within 5ft of me so I'll definitely start narrowing down a good fan. I will post it in here later.



Be sure that you do. biggrin.gif
post #26 of 50
Narrowing down the results on Digikey... this seems like the best (quietest) choice. Anything lower was either out of stock or had a minimum order of 520. eek.gif Or both.

This looks alright: http://www.digikey.com/product-detail/en/MEC0252V3-000U-A99/259-1475-ND/2021103

I'll order the two for my amp and make sure they fit and function properly.

EDIT: Wait. They are on back order til the 30th. Ugh, that's not going to work for me. Well...I'll keep searching.

Here we go!

http://www.digikey.com/scripts/DKSearch/dksus.dll?Detail&itemSeq=128789232&uq=635007583904744217

Only two dollars more. Woop. tongue.gif
Edited by Scott Simonian - 4/5/13 at 9:33am
post #27 of 50
Ordered.
post #28 of 50
Thread Starter 
Can you post the part number instead? Your link doesn't work.
post #29 of 50
259-1484-ND
post #30 of 50
Hey Scott and others, just FYI, that's the fan that I ordered to try. The one carp measured after I sold to him that you said "wasn't much of a fan mod". It's quieter than stock but not by much.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: DIY Speakers and Subs
AVS › AVS Forum › Audio › DIY Speakers and Subs › What amp for 2-4 UXL-18's?