Opinions please....

[OmegaBunny 10+ year member]

Get 8 or 10 tang bands!

Quantity not size.

 

[FurbiesAndBeans 10+ year member]

Dan dId you ever do SQ in meca for shits and giggles? Reason I ask was last year at finals, I helped tune up a guy's truck, with 2 18's right behind the seat. By mistake I turned the subs off. The first judge got in with the subs off and said the bass was pulling to the rear lol //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

He saw them 18s and got scurred yo

 

[Bumpin' Goalie 10+ year member]

yeah , gotta love a sound judge that judges with their eyes //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

Blindfold 'em!

 

[misfit138 5,000+ posts]

Am I the only person that got a pm from Audio Dave?

 

[Beerdrnkr 5,000+ posts]

Wow, this thread sure got deep...lol. I contacted Mark with Mach 5 and decided to go with 2 15" IXL's and 2 18" PR's. I'm going to do seperate enclosures for each, if I decide to compete in SQ I really won't need the 2nd one in there and it'd be nice just to take out whenever I need some room. Mark is awesome and found out the enclosure sizes I'll need and even told me the tuning I'd need on the PR's to get a great flat response from about 30-100hz. My main goal is to have a system similar to Jim's (Bigred over on diyma). His frontstage sounded great and when he wanted, he had the ability to hit around 149db's. I want the best of both worlds and I think this setup will be close to getting there.

 

[Beerdrnkr 5,000+ posts]

Thats all you needed to say thank you. Good luck on the build It should sound nice. My point wasnt saying larger dont sound good, it was that you dont have to have huge subs to have lots of bass and SQ. All you need to do is look at the MQ on sub specs, that is how you know the difference on size and keeping up with media. And it isnt science or math to know if you have a musical ear at all, that 4 18" subs with Metallicas "One" will not sound like it will on 4 10s or 12s. It just wont. It may go deeper, but when the solo comes up in 64 count notes with the drums, it wont. It can damage the subs as well.

I see what you're saying but I should hopefully have enough midbass playing 63hz-whatever to take some of the pressure off of the 15's to get good snap. I'm running 2 sets of midbass drivers (I think). Mach 5 IXL's are geared towards SQ so hopefully they can handle those quick responses well.

Sorry to take your thread so far off topic. I hate misinformation //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

No biggie.

SQ?
2500-3000W?

I missed something...

Believe me it's been done.

Dan dId you ever do SQ in meca for shits and giggles? Reason I ask was last year at finals, I helped tune up a guy's truck, with 2 18's right behind the seat. By mistake I turned the subs off. The first judge got in with the subs off and said the bass was pulling to the rear lol //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

That's pretty funny...lol

 

[Beerdrnkr 5,000+ posts]

Get 8 or 10 tang bands!
Quantity not size.

Depending on how this setup sounds, if I'm not satisfied I might go to a bunch of 10's or 8's...We'll see.

 

[Maxipads 10+ year member]

Am i missing something here?? Call me dumb or whatever but i though you were NOT supposed to mix subs because the motors cancel each other out?? Or is a passive radiator an exception or something.. Im boo koo confused

 

[Beerdrnkr 5,000+ posts]

Am i missing something here?? Call me dumb or whatever but i though you were NOT supposed to mix subs because the motors cancel each other out?? Or is a passive radiator an exception or something.. Im boo koo confused

The 15's are complete IXL subs and the 18's (passive radiators) are pretty much just the cone/top assembly and it also has a threaded rod where you add washers and a bolt to add mass and tune your sealed enclosure, they don't have motors or coils. What it does is pretty much gives you a ported enclosure in a much smaller box and eliminates any port noise (because there is no port) that some ported boxes end up having. Don't know if that's easy enough to understand or not.

 

[T3mpest 10+ year member]

Am i missing something here?? Call me dumb or whatever but i though you were NOT supposed to mix subs because the motors cancel each other out?? Or is a passive radiator an exception or something.. Im boo koo confused

That's a bad myth this forum started. Along with clipping magically killing amplifiers. (300 clipped watts and 300 clean watts will kill a speaker equally fast, power under the curve is ALL that matters). Anyway, if both subs are moving in and out at the same time they wont' inherently cancel each other out any more than subs of the same sizes would. The main issue is that each sub needs different airspace to get the same frequency response and that makes it very hard to tune. That still makes it a bad idea unless you have an EQ and an RTA handy to fix your frequency response when you done. If you can do that, in a sealed scenario it's often not a bad idea in a pinch to fit in what you can and just EQ the issues that come up out of it. In a good setup multiple subs of different sizes still aren't needed, just saying it's not as inherently bad as some make it out to be.

Anyway, I'd love to let dave come listen to my fifteeens. If I turn off my hpf, I can basically play most of the information that is in the song "one" just out of my sub. I've ran my AV15's on tones and they had NO issues up to about 3k by ear. (yes, 3000hz, tweeter territory). Beyond that I heard some cone breakup from having a piece of aluminum moving back and forth that fast lol. Point is, any sub can play that high as long as the cone is dampened enough and the voice coil has low enough inductance. What size woofers do you think metallica uses to play back songs on tour? or any band for that matter. In Pro audio midbasses are 15'-18 and midranges are usually 12's, sometimes 15's as well. The best lower midranges I've heard to date came out of an 8, PHL 2520, hopefully my BMS will sound as nice. In most actual SQ setups, subwoofers are big. The idea that 8inch subwoofers are good for SQ is a myth. A 8 is going to have a hard time reproducing alot of insruments at an volume level high enough to be considered accurate without stress or strain, that's far from accurate. If your woofer can't do 120db's at 20hz in a car, it's not great for SQ, IMO.

Anyway I took a similar approach in my attempts at a SQ system that can play back at high volume levels, although my car is a little less sane than most lol. I've got 2 AV15h woofers and 4 PR15's from exodus audio. 5 cubes at 25hz. Front stage is B&C DE500 compression drivers on full sized horn bodies and BMS 8N515 mid's for the midrange/midbass. Front stage should be good for about 125db's and subs about 145 (****ing cadillac trunks lol)

 

[AudioDave]

Am I the only person that got a pm from Audio Dave?

Ya your special lol

 

[misfit138 5,000+ posts]

Ya your special lol

Punctuation is awesome, dumb fuck.

 

[AudioDave]

Punctuation is awesome, dumb fuck.

Lol your spelling and grammar sux and your talking about my punctuation? you a ****in critic on that to? Show your shit or shut up asscave. Noone gives a shit what you think.

 

[misfit138 5,000+ posts]

Lol your spelling and grammar sux and your talking about my punctuation? you a ****in critic on that to? Show your shit or shut up asscave. Noone gives a shit what you think.

Wow, the irony is thick enough to cut with a knife. //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

I've seen your name attached to a Cavalier build thread with no pics of the build, and a Blazer with jacked up cutouts that were made by kids. So please explain, why are you an authority on build quality, dumb fuck? Because you run JL Audio?

And by the way, some of my work is posted on this site. I'll be sure to link it to you directly if it's ever completed...

 

[AudioDave]

I've seen your name attached to a Cavalier build thread with no pics of the build, and a Blazer with jacked up cutouts that were made by kids. So please explain, why are you an authority on build quality, dumb fuck? Because you run JL Audio?
And by the way, some of my work is posted on this site. I'll be sure to link it to you directly if it's ever completed...

First off the kids ar 16 and 17 and theres nothing wrong with them learning. The holes are not jacked so they cant be used on a baffle wall anyways. Once its done you wont even see the holes and it and nothing is being mounted in the hole. Is that the best you can do on that system? Atleast I have systems. Second of all I dont know why the pics dont show it seems only you cant see them. Lastly dumb *** - "completed" is the key word. Theres not enough room on here for all my work in pics and videos. As for yours when done, I dont care about it. I will have long done 200 more systems by then im sure.

Its amazing how fast you seem to post a reply to all your posts and comments back. Do you have a life outside mommys computer? Just like all other kids, you dont know when to shut up. Keep playing with the mags and ky - that is also as close as you will ever get to a system.