4 18" 5400's powered by 2 qsc rmx 5050's - Page 3

A really powerful low end can be had with a single LMS in a sealed box.
A crazy low end is with a LMS and 2 PR's
A INSANE low is with a pair of LMS's and 4 PR's

you my friend are asking for an inferno of low end. I think you will be pleasantly surprised with what one of these will do, 4 of them will give you a grin that will be impossible to wipe off.

Good luck, I can't wait to see how this turns out!

Any suggestions will be greatly appreciated.

Judging from the pictures, I assume that this is a common air chamber for all parts. If so;

* Did you estimate the cabinet weight with all the parts installed? Can you move this?

* Assuming two amps to power this. If one amp breaks, the subwoofer is down
as it wouldn't be wise to operate this with only one woofer being powered because
you now have one woofer driving four PR's and a non-powered woofer which by itself
is a PR. You have to check the model to see what issues may manifest.

* If you break a woofer and you need to remove it to have it fixed, your subwoofer
is down. You can plug the hole but now you have one woofer driving
four PR's. You have to check the model to see what issues may manifest.

* If a PR breaks and you need to remove it to have it fixed, your subwoofer
is down. If you operate the subwoofer with a the PR hole open, that is not good.
If you plug the PR hole, then you have two woofers driving three PR's and you
may damage the rest of the PR's.

In other words, making a two woofer, four PR subwoofer sharing a common airspace
can cause your subwoofer to be non-operational if one thing breaks.

Another idea is to break the design into two seperate subs like Jai's rig. One LMS,
two PR per seperate box. If one item breaks, only one subwoofer is down, the
second one is still working which is better than having nothing working.

Two subwoofer boxes also allows experimentation with placement.

Last I heard 6-8 weeks. Don't trust any deadlines given by TC Sounds, they almost never meet any of them.

Neo Dan,
How bout mounting the speakers on the bottom of the box with an added "magnet support board" for each speaker? Cut airspace holes on all four corners of these" magnet support boards".
The center of gravity for the cabinet will be low and the additional "magnet support boards" will decrease the torsion component on the speaker baffle which appears to be at a minimum of strength because of the large hole cutouts for speaker and passive radiators.
My guess is that this combination of speaker and passives driven by the high watt amps will be idling along for most of it's life only to be launched into service orbit when another DIYer happens along.
Most certainly we ALL must be careful with our DIY creations so that congress doesn't start taxing us on SPL levels measured outside our homes or apartments. Or worse yet start taxing robertcharles on the number of inches of circumference of speakers and passives kinda like the number of feet of frontage on a lake or river. LOL

Sorry to hear that robert. I hope it gets sorted out soon.

Robert,
You have been skeptical about TC and I don't know why. Things happen in shipping. Just call TC and they will take care of it. You may have to wait, but it is worth it. Don't give up yet. Take it easy, things will fall in place. Just give it some time and enjoy the DIY process. The pain and the pleasure, if you sum it up all, will be positive when you are done.
Take care buddy.

Good news.

well maybe someone wanted to still it and they thought it was a complete woofer so they opened it up and noticed it was just a big magnet and left it their and took off hte label to delay them finding out what happened

but heh most likely that didnt happen LMFAO


I had big problems with fedex recently, they couldnt find me house.... also I just got a package from ups and you should of seen the box....

Robert,
any luck with theTC shipments?


Later
Dan

I was supposed to get a quote for 4 18" passives from TC over a month ago - and to date, nothing, I've left emails, voice messages, etc., and no return info. I've spoke to at least three different people, including Kyle. For me, I'm at the point of just building two sealed LMS5400 18", since I can't get any info from them ( I even asked them to just tell me if they cannnot do the passives for me - and no response ) - frustrating. Good luck with your build and getting the passives ( I'm sure you'll receive them since you've paid for them ).

I got mine yesterday.... ordered 2 - 18" of which I tried to change my order to a couple more 15" TC-2K's.. as I have been settling on a different design..... ported...

But I guess I will doing some experimenting with different designs... what the hell right... One can never have enough subs in the house...

cones are aluminum... they look great... with the tcsounds screenprint image

Sorry robert... I didn't spend alot of time looking at them, they have 2 steps of bracing if thats what you mean... like 2 stories of windows of a house. very light weight... Painted Black on the spider and Black cone...

All that was changed was the cone. It went from Ti to powder coated Al. If it had dual spiders before it has them now....

TC site says (archive) single 10" spider. Audiopulse site says dual 10" spider.

I believe that they always had dual 10" spiders. How else would you control a 4" VC that heavy, and with that much throw?

My 5400 arrived on Wednesday. It was shipped surrounded by heavy foam packing in a cardboard box. My previous 5400 was shipped in a wooden crate. I am assuming all is well, but I wonder how many get damaged with only a foam/carboard shell. I have not had a chance to remove it from the box...