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Author Topic: Finished my LABs  (Read 16309 times)

Brian Alleyne

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Re: Finished my LABs
« Reply #30 on: July 22, 2008, 09:47:19 pm »

Put your company logo on the cabinets and say they are proprietary cabs that should help the resale value.
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Marjan Milosevic

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Re: Finished my LABs
« Reply #31 on: July 23, 2008, 05:35:09 am »

Jeff Babcock wrote on Tue, 22 July 2008 21:24




The X-tro is a nice looking design, and I have spoken with one person who is extremely happy and whose opinion I trust.  However, it is heavy, not cheap to build, not arrayable, and tri-amp.  Not exactly simple or cheap once you take amps, cabling, and processing into consideration.  NL8 cables ain't cheap these days.

The fitz DR's are not easy to build, although Lab subs are not that simple either, so if you built labs you will probably be OK.  They are very cheap in terms of material costs, but if building 290's I would never consider the recommended Eminence HF.  Loaded with something like a pair of BMS 4552 drivers (which are a great driver for the price) crossed at about 1K they would be more serious boxes IMHO.


What do you mean they are not arrayable?
Just because they are not trapezoidal does not means you cant use more than one per side. They are 60 degree horizontal dispersion.
Just you cant tight pack them and should splay them a bit. Just like any Turbosound Floodlight or Flashlite.

Also they can be biamp if you put passive crossover between the 8" and 1".

In terms of shire output you can not compare DR290 and Xtro.
It is like comparing Volvo and Porsche. Much more HP in the Xtro.

Sean Perryman

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Re: Finished my LABs
« Reply #32 on: July 24, 2008, 03:44:32 am »

Anyone have a link to plans for the X-Tro? Have seen it talked about alot, but haven't found plans yet. What is everyone's opinion of BF's DR300? When he says on there "Vertically Arrayable" does he mean in a hanging fashion, or in ground stack form?
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Marjan Milosevic

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Re: Finished my LABs
« Reply #33 on: July 24, 2008, 08:03:33 am »

You can find everything here

http://speakerstore.nl/index.php?pg=11&c=23

And you have a forum section dedicated to the Xtro and Punisher on the speakerplans.com

http://www.speakerplans.com/forum/forum_topics.asp?FID=19

Have a nice reading

index.php/fa/17046/0/

Josh Billings

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Re: Finished my LABs
« Reply #34 on: July 24, 2008, 09:06:53 am »

I've heard all the DR Tops suffer from a muffled midrange / midbass area because of the bent horn. I can't see how he can overcome trying to fold frequencies like 900 hz

-Josh Billings
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peter.golde

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Re: Finished my LABs
« Reply #35 on: July 24, 2008, 10:05:14 am »

Josh Billings wrote on Thu, 24 July 2008 09:06

I've heard all the DR Tops suffer from a muffled midrange / midbass area because of the bent horn. I can't see how he can overcome trying to fold frequencies like 900 hz

-Josh Billings


Frequencies much higher than 900 are "folded" and mutilated in different phase plug designs. The way it is done in the DR's is the driver fires into a short vertical diffraction horn, then split horizontally very close with a rounded hard smooth, small radius bend, which has a built in expansion to match the correct horn expansion for lower frequencies. Sort of like a modified w bin.
There are tradeoffs in all designs, these boxes are lightweight and super efficient and the high quality true horn loaded bass and mid bass that they produce is quite impressive at any size or weight.
The short bandpass horn of the xtro must be pretty impressive with the dual 15's as well, should be louder closer in, more like direct radiators. You would have to demo the boxes for yourself to figure whats best for your application.
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Nimrod Webber

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Re: Finished my LABs
« Reply #36 on: July 24, 2008, 10:51:50 am »

Josh Billings wrote on Thu, 24 July 2008 16:06

I've heard all the DR Tops suffer ...


Josh,

Don't listen to people,
Have a listen to some DRs first hand...  Surprised  

Razz
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Jeff Babcock

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Re: Finished my LABs
« Reply #37 on: July 24, 2008, 04:45:16 pm »

Marjan Milosevic(MarjanM) wrote on Wed, 23 July 2008 05:35

Jeff Babcock wrote on Tue, 22 July 2008 21:24




The X-tro is a nice looking design, and I have spoken with one person who is extremely happy and whose opinion I trust.  However, it is heavy, not cheap to build, not arrayable, and tri-amp.  Not exactly simple or cheap once you take amps, cabling, and processing into consideration.  NL8 cables ain't cheap these days.

The fitz DR's are not easy to build, although Lab subs are not that simple either, so if you built labs you will probably be OK.  They are very cheap in terms of material costs, but if building 290's I would never consider the recommended Eminence HF.  Loaded with something like a pair of BMS 4552 drivers (which are a great driver for the price) crossed at about 1K they would be more serious boxes IMHO.


What do you mean they are not arrayable?
Just because they are not trapezoidal does not means you cant use more than one per side. They are 60 degree horizontal dispersion.
Just you cant tight pack them and should splay them a bit. Just like any Turbosound Floodlight or Flashlite.

Also they can be biamp if you put passive crossover between the 8" and 1".

In terms of shire output you can not compare DR290 and Xtro.
It is like comparing Volvo and Porsche. Much more HP in the Xtro.



Marjan,
I never said the Xtro was not a higher-end design.  It would certainly have more output than DR's.  Re the arrayability, if I recall correctly, it was Walt or somebody similar in the forums saying while you could splay them, they weren't really designed with arraying in mind.  I suppose in the real world they would array about as well as a lot of other 60deg boxes.

Back to the OP's original post.... be VERY careful running a PL380 into only 2 Labs.  You could very easily see the magic smoke if you are not taking proper precautions.

lawrencemueller

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Re: Finished my LABs
« Reply #38 on: July 24, 2008, 04:57:30 pm »

[quote title=Jeff Babcock wrote on Thu, 24 July 2008 15:45][quote title=Marjan Milosevic(MarjanM) wrote on Wed, 23 July 2008 05:35]
Jeff Babcock wrote on Tue, 22 July 2008 21:24



Back to the OP's original post.... be VERY careful running a PL380 into only 2 Labs.  You could very easily see the magic smoke if you are not taking proper precautions.



Thanks for the caution. I really want to run it with as much as some of the folks on this forum have mentioned - 2000 watts per box. I'll have my own version of heatsinks in place, and we won't be running them with everything turned up, I just want to have lots of headroom and good reproduction of sound.

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Josh Billings

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Re: Finished my LABs
« Reply #39 on: July 24, 2008, 06:50:10 pm »

Yeah with an 800 watts RMS box i'd get nowhere near the clip light at 2500 watts. You CAN do peaks at 2500 watts, but it's a fine line and you better have those cabinets AIR TIGHT! The suspension will shred with an air leak.

-Josh Billings
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