need help with th18

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good day to all, i was doing alot of reading about the following thread

TH-18 Flat to 35hz! (Xoc1's design)

and need someone to post the final design and cutsheet for 4x8 plywood, i read as much as i could and saw changes take place as things progressed. i really want to try these and want to start building asap
thanks guys
 
I plan to use the 18 sound 18LW2400. Do you suggest another driver as I have not purchased them as yet. Or is there a better cabinet design? I am looking for really good low base outdoors. I don't think I will be doing any live performances any time soon so I am asking for your suggestions on how to achieve this.
If you need me to I can post all of the equipment I already have which isn't much because I'm just starting out.
Thank you for such a quick reply also. Have a great day
 
I will be sure to read that thread. I will be dj-Ing at outdoor parties mostly and some indoor events like weddings. Would 12s be enough bass for good sound all around? As I said before I'm learning as I go and thought that everything was 18 or 21 now to get serious bass.
 
i like the design of the 12s cabs and will also build a few of those. i am investing in as much sound as i could, i really want to be able to play at small venues and be ready at anytime to really rock a crowd in a large open area, i want bass to shake your organs for long periods of time, and i didnt say that to be funny
i know i will need to add more amps to my rack . i presently have a new never used behringer inuke 6000dsp, a sound barrier 3400 and a qsc2460
i have two 18sound 2400's in sub cabs i built to spec from their website and i have two dual 18's with seismic audio madrids 750rms and 1500 peak each
where do i go from here? also can i discuss other equipment on this thread? i need to know if i need to change or add anything
thanks in advance
 
The inuke is garbage for real bass output. And you really want to put your trust in that cheap of an amp? What happens when it melts itself mid show? For a real 20hz amp that will hold its own you need a higher end qsc or crown. Used crown macro tech, itech 9000, etc. qsc rmx 4050/5050, and so on. And multiples of those amps, with plenty of power to power them (240V)
And go with 8 TH-18's or 16 PAL 12's. that's suitable to "rock a large crowd".
Now for what you would spend on stuff bought at a store this is a bargain. But will it cost you? Most certainly.
With 16 PAL 12's and 4 QSC RMX 4050's you're looking at $5200 plus $6000. Plus wiring, racks etc another 1500 or so.
With 8 TH-8's loaded with 18 sound 2400 drivers you're looking around $4800, with higher priced drivers like the b&c 18sw115 a good bit more than that. For 8 TH-18's you'd need more power than the 4 4050's will give you. You'd need to step up to some itech amps, macro tech 5002's or lab gruppen Fp 9000's, a pair of any of those amps would run two cabinets.
Again this is for real bass output, not 1khz amps that start clipping and distorting down low.
Don't forget the tops to accommodate a large scale system like this. I'd recommend more Custom active stuff, don't really like the passive stuff....just IMO

Am I off base on what you are thinking? If you are thinking a $1500 amp and sub setup will really rock a crowd, you're in for a surprise.

If you're willing to tackle this project with lots of time and money, then get started on planning.

So many people have unrealistic goals and think that they can get so much output from so little. I thought that at one time too. Silly me.
 
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Now I have some of the advice I need to make the first step in the right direction.
I am very dissapointed to hear that the Inuke is garbage when it comes to low bass. Will I be able to use it properly for midbass?
I will start with four of the th18s. I will check the cost of the b&c 18sw115s and decide if to go with them or the 18sound 2400s
If I decide to use the b&c will I still need 8 cabs or will it be less and would I have to use more bracing for the cab than I would have to use for the 2400s
I don't know if its a mistype but you said that I would need more powerful amps for the th18s and suggested was itech. Macrotech 5002 or lab gruppen 9000 and a pair of any of these would power ONLY two cabs. Is this correct or will they power more cabs that that?
Can you suggest places to purchase good amps from and would it be prudent to purchase used amps if I can find them?
I will look into active tops. Any preferred name brand and power level for these you can suggest?
I am willing to take on this project and do it right and will need guidence from pros such as yourself. I will start planning right away and set out a proper plan ASAP and get your advice on it when I'm done. I will be able to start planning as soon as I get the previous questions answered.
Thanks a million and now I see how dedicated you have to be to do this right.
 
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The NU6000DSP should have no trouble at 8 ohms per side for any length of time, but loading it down with 4 cabs to 4 ohms a side might not work out so well... I'll second mRgSr's suggestion that you should invest in top tier amps if you want to run drivers like the 18SW115.
 
I disagree with only running high quality amps if you only run high quality drivers. But let's not start that debate here, just agree to disagree lol

What the OP wants sounds to me like it will be pushed to the Limits, for hours on end. You really need headroom, quality components and multiples of that combination for that to work out.
 
The NU6000DSP should have no trouble at 8 ohms per side for any length of time, but loading it down with 4 cabs to 4 ohms a side might not work out so well... I'll second mRgSr's suggestion suggest that you should invest in top tier amps if you want to run drivers like the 18SW115.


Not that I disagree with you, but how about we agree that you don't put words in my mouth?
 
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What about the cbe- 18 sw115 loaded and how would it compare to the th18 loaded with the same driver,would it extend lower or just give higher spl

I dunno personally, but I just googled this up:
Cyclops_VS_Xoc1_012.jpg
 
Well,,, It's a bit more complicated than that as this is someone's or even two different people's interpretation of the layout and not actual measured response. I don't know how old this is, but I do know that lots have been learned about modeling in the last year. I read some about the CBE and I see a recommended HPF @ 35Hz, that would lead me to think it's not going to actually go this low.
 
I read this on prosoundweb from stipe him self

..However builders of CB-18 have reported great SPL flat from 40Hz -up .. with a bit of EQing even from 35Hz achievable (if needed Smile ) - of course HPF @ 30Hz have to be used to protect speaker unit from over excursion damage at high power.
 
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