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Stereo Integrity's new HT Subwoofer - Page 12

post #331 of 2212
I'm still pretty noobish. If I were to buy 4 of these to be powered by a marathon 5050, which version (dual 2 ohm/dual 4 ohm) combined with what proper wiring scheme would you recommend?

Edit: I said screw it and ordered 6 of the d4's. Feel free to let me know if you think that was a mistake. I'm guessing I should have some time to request a different version if need be.

In the end, I would maybe consider 6 total but just run the other 2 with an ep4000. Unless of course you guys have a better idea ( which I'm sure you probably do). smile.gif
Edited by maintman - 12/21/12 at 2:47am

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post #332 of 2212
^^^ Sorry, my edit was put in the middle of the post rather than the end. Too much of a pita to fix it now with an original/non-updated iPhone at this time of night.
post #333 of 2212
Quote:
Originally Posted by maintman View Post

I'm still pretty noobish. If I were to buy 4 of these to be powered by a marathon 5050, which version (dual 2 ohm/dual 4 ohm) combined with what proper wiring scheme would you recommend?
Edit: I said screw it and ordered 6 of the d4's. Feel free to let me know if you think that was a mistake. I'm guessing I should have some time to request a different version if need be.
In the end, I would maybe consider 6 total but just run the other 2 with an ep4000. Unless of course you guys have a better idea ( which I'm sure you probably do). smile.gif

You want each pair to be a 2ohm load with that amp so you want the D2's.
post #334 of 2212
You could run all those D4's off the one marathon as well. Three on each channel. 6ohms per channel. But that's not what you have that amp for. You have it for its big output in 2ohm stereo
post #335 of 2212
Quote:
Originally Posted by mjaudio View Post

The aluminum cone of the Dayton with the high roll surround of the SI would be the best combo, they both look really good though.

the paper cone and double stitched surround were actually another selling point for me. i think that look will go well with a stained wood enclosure. painted/duratex, yeah, i like the look of the Dayton better for that.
post #336 of 2212
Quote:
Originally Posted by maintman View Post

I'm still pretty noobish. If I were to buy 4 of these to be powered by a marathon 5050, which version (dual 2 ohm/dual 4 ohm) combined with what proper wiring scheme would you recommend?
Edit: I said screw it and ordered 6 of the d4's. Feel free to let me know if you think that was a mistake. I'm guessing I should have some time to request a different version if need be.
In the end, I would maybe consider 6 total but just run the other 2 with an ep4000. Unless of course you guys have a better idea ( which I'm sure you probably do). smile.gif

Nah. You got it just right with that order.

What you will do is hook TWO d4's to each channel of the Marathon. You will do the exact same with the ep4000 but you will want to bridge the Behringer to get the most power to the drivers.

Good job! smile.gif
post #337 of 2212
Quote:
Originally Posted by Scott Simonian View Post

Nah. You got it just right with that order.
What you will do is hook TWO d4's to each channel of the Marathon. You will do the exact same with the ep4000 but you will want to bridge the Behringer to get the most power to the drivers.
Good job! smile.gif

he will get good power with 4ohms on each channel of the marathon, but if he can exchange them for D2 and get them to 2ohms per channel shouldnt he?
post #338 of 2212
Quote:
Originally Posted by brian6751 View Post

he will get good power with 4ohms on each channel of the marathon, but if he can exchange them for D2 and get them to 2ohms per channel shouldnt he?

The Marathon outputs 1,900w @ 4ohms and 2,500w @ 2ohms. So that's 950w or 1,250 per driver. Not a huge amount, imo to worry about but he could... yes. A 2ohm load on ANY amplifier is a harder load to drive, fyi.

However, if he does this with all six drivers he won't be able to get the most out of his Behringer. I'd stick, personally.
post #339 of 2212
Quote:
Originally Posted by brian6751 View Post

Anyone figure out a recommended box volume for these yet? Single and dual opposed

Quote:
Originally Posted by gpmbc View Post

Fatshaft, just going off manufacturer specs, 4 of the ftw 21s net 44L of displacement. 8 of the SI 18s = 43L. Sensitivity would probably be close too but from what josh said of the 18s, they have a very compliant surround which might be more amp friendly depending on enclosure. I'd say the 18s will serve you better the higher you venture into the midbass region so it depends also on the bandwidth you'd like them to cover. My big question is what aren't the 21s doing for you that you wanna venture out?

Quote:
Originally Posted by Scott Simonian View Post

Makes no difference being dual-opposed or not. It's the equivalent airspace per driver. That's what you pay attention to.
I'm going to (most likely if I order these) use two 8cuft cabs dual-opposed, four cubic per driver. They will take 1,250w just fine.

Quote:
Originally Posted by gpmbc View Post

In order to make the most of enclosure efficiency using 5-600 Watts, how much cubic feet per driver would be optimal? I know on the SI site they reference 6 cubes for sealed.

Ok all,

Went and had a visit to SI's warehouse yesterday. Lots of fun meeting the guys there and seeing all the fun things they have in store. For those of you that are on the fence, get off it. I don't have much time to talk about now as I am at work but I will check back in later this evening and give you all a good rundown. I quoted all the above as I was told 1st hand that once they really get some of these cookin', they are probably going to drop the suggested box size down a shade on the website. Ricci's tests basically convinced them of this. 6 cuft is not a terrible idea either, just saying the results of their prototype were more outstanding than even they expected, so they are going to adjust accordingly.
post #340 of 2212
Beast, let me know if you got that email from me this morning.
post #341 of 2212
Quote:
Originally Posted by Scott Simonian View Post

Beast, let me know if you got that email from me this morning.

Just responded smile.gif
post #342 of 2212
Thanks Brian and Scott for the help. What about also bridging the 4 on the Marathon to get them back to 1250 per driver, while remaining a 4 ohm load on the amp? Here is an option of that from a car audio diagram, after I plugged in the info:

http://m.seimg.net/product/img/subwoofer_wiring/4_subs_DVC_4_ohm_2ch_bridged.jpg
post #343 of 2212
You ordered subs with dual 4ohm coils. You won't be able to hook it up like that. If you were to series-parallel all four you would end up with an 8ohm load and the Marathon only outputs a 5,000w bridged output at 4ohms. You would get the exact same power running all four on the Marathon bridged as you would doing stereo 4ohm with two drivers on each channel.

If you really want to squeeze out every last watt of power, you'll need the dual 2ohm version of the SI's.
post #344 of 2212
Quote:
Originally Posted by beastaudio View Post

Ok all,
Went and had a visit to SI's warehouse yesterday. Lots of fun meeting the guys there and seeing all the fun things they have in store. For those of you that are on the fence, get off it. I don't have much time to talk about now as I am at work but I will check back in later this evening and give you all a good rundown. I quoted all the above as I was told 1st hand that once they really get some of these cookin', they are probably going to drop the suggested box size down a shade on the website. Ricci's tests basically convinced them of this. 6 cuft is not a terrible idea either, just saying the results of their prototype were more outstanding than even they expected, so they are going to adjust accordingly.
Very encouraging Beast, thx and looking forward to the follow up later.
post #345 of 2212
Quote:
Originally Posted by beastaudio View Post

Ok all,
Went and had a visit to SI's warehouse yesterday. Lots of fun meeting the guys there and seeing all the fun things they have in store. For those of you that are on the fence, get off it. I don't have much time to talk about now as I am at work but I will check back in later this evening and give you all a good rundown. I quoted all the above as I was told 1st hand that once they really get some of these cookin', they are probably going to drop the suggested box size down a shade on the website. Ricci's tests basically convinced them of this. 6 cuft is not a terrible idea either, just saying the results of their prototype were more outstanding than even they expected, so they are going to adjust accordingly.

Beast sent you an email...I feel off the fence wink.gif and landed on the good side wink.gif

thanks
post #346 of 2212
Quote:
Originally Posted by Scott Simonian View Post

You ordered subs with dual 4ohm coils. You won't be able to hook it up like that. If you were to series-parallel all four you would end up with an 8ohm load and the Marathon only outputs a 5,000w bridged output at 4ohms. You would get the exact same power running all four on the Marathon bridged as you would doing stereo 4ohm with two drivers on each channel.
If you really want to squeeze out every last watt of power, you'll need the dual 2ohm version of the SI's.

Here's the page where I plugged in the info: http://knowledge.sonicelectronix.com/tools/subwoofer-wiring/

That's why it was confusing my ignorant mind, because it seemed to have displayed that as option when I plugged in for 4 subs with dual 4 ohms and 2 channel amp. I guess the impedence option is referring more to the final load of the amp rather than the subs initial impedence. Anyway, thanks for clarifying, I'll just stick with what I got and your recommendation.
post #347 of 2212
Also, to keep things simplified with less time, effort, and needed tools purchased, do you think I would get by fine going with this for the cabinets?
http://www.diysoundgroup.com/flat-packs-1/subwoofer-flatpacks-2/4-sub-flat-pack.html
post #348 of 2212
Quote:
Originally Posted by maintman View Post

Thanks Brian and Scott for the help. What about also bridging the 4 on the Marathon to get them back to 1250 per driver, while remaining a 4 ohm load on the amp? Here is an option of that from a car audio diagram, after I plugged in the info:
http://m.seimg.net/product/img/subwoofer_wiring/4_subs_DVC_4_ohm_2ch_bridged.jpg

For some reason no one has mentioned you can get a 2.66 ohm load out of the d4. Wire each coil in series for 8 ohm subs. Wire 3 subs per side in parallel. 1/8 + 1/8 + 1/8 = 1/Rf => Rf = 8/3 = 2.66 ohms. Getting the dual 4 ohm coils should be just fine.
post #349 of 2212
Quote:
Originally Posted by maintman View Post

Also, to keep things simplified with less time, effort, and needed tools purchased, do you think I would get by fine going with this for the cabinets?
http://www.diysoundgroup.com/flat-packs-1/subwoofer-flatpacks-2/4-sub-flat-pack.html

Yeah, that would work great. It isn't dual-opposed (not sure if that's what you were going for or not) but would work perfect for each driver on it's own.
post #350 of 2212
Thanks tuxedocivic for another interesting option.
Scott - I'm open to both single or dual-opposed, but I don't see an option for an 18" dual-opposed on that site, so it makes for an easier decision. For my set-up now, I will have to stack 4 high in one corner, and the other 2 set by each other in the back opposite corner. I guess in the end I kinda like the extra placement flexibilty of singles (plus lighter boxes even though you now have to move more of them).
post #351 of 2212
That's always a good plan. Multiple locations helps smooth out the response. I just mention dual-opposed because.... heh, a bunch of those builds keep springing up. tongue.gif
post #352 of 2212
Eric has a couple more sub flat packs coming. Including a dual opposed.
post #353 of 2212
No brian, you weren't supposed to tell me that! More freakin' decisions! Lol smile.gif
post #354 of 2212
Here's another crazy option if I can hook it up like how tuxedocivic describes, or any other logical wiring of 6 of them to one ma-5050:

I could run six along the front underneath the screen, and use my diy sealed mfw-15's (4 of them stacked two high, set by each other) for that opposite corner. I guess I could still go with the orginal wiring idea and get another behringer if need be, since they're so cheap right now.
post #355 of 2212
Yyyuuuppp. smile.gif
post #356 of 2212
Lol! I should've guessed that would be the consensus. The support around here can be compared to if alcoholics anonymous held their meetings at the local bar..good times!
post #357 of 2212
Quote:
Originally Posted by maintman View Post

Here's another crazy option if I can hook it up like how tuxedocivic describes, or any other logical wiring of 6 of them to one ma-5050:
I could run six along the front underneath the screen, and use my diy sealed mfw-15's (4 of them stacked two high, set by each other) for that opposite corner. I guess I could still go with the orginal wiring idea and get another behringer if need be, since they're so cheap right now.

That's my exact same setup. 6 wired to either 3 EP4000's or one MA-5050. Just do it. smile.gif
post #358 of 2212
doit.gif
post #359 of 2212
If I can ever decide on what 2-channel setup to run in my living room I'm planning to run two of the 18s =) Can't wait.
post #360 of 2212
I jumped in for a couple. Think I will place the two of them along with a 18" Mal-X in the front and a 12" TC Sounds in each back corner. This allows me to have smaller subs in the back, that will fit better with the new seats I have on order.
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