appleyard

Hi I got a pair of the original 15 fi Q (without any options) in 2007. Now I'm planning to use it as my home theater sub. Would it be possible to build a recone (15") that can have a response between 20-100hz and power handling is between 800-1000w. Each sub must have a dual 4 ohm impedence. This sub in mainly for sub duty so I will be looking at strong lows. Other details would be: i. Both sub are placed in a ported 10 cu.ft tuned at 20hz ii. Will be powered by a crown xls2000 PA amp iii. Mostly for home theater (movies) where lots bass as low as 15hz What wold be the cost drop in 2 sets of recones for this thanks

If these can handle 4 saz1500d with 33hz then I want a 22"

Is the new Q are similar from the old ones. I had the first 15q with no option. Was thinking of adding another 2.

I have 2 15Q (1st gen with no options) with 2 saz1500d and it gets hot over a short period of heavy bass music. I was wondering is there any way I can increase the power handling of the sub. I am not from the US so to ship the motor over to get the partial BP would be expensive. would it be possible to use the BTL spider on the Q or other options? I know changing the spider would increase Fs and Qts but would it be significant? thanks

the BL has more motor force than the Q so it has more SPL per stroke than the Q. Higher Xmax allows you to play lower freq. at high Db. You can see that the Q has lower Fs than the BL.

Would this options be applicable to the original Q (when there is no options available)? I ran it with the SAZ1500d and it does get hot. So a cooling option on this on recones would be good.

how musical is the warden? would it comparable to the btl?

No subs?

What would be the threshold temperature of the magnets?

Guys Prob havent post for over a year now, thats because I have kept all my things in the closet and lost touch about car audio while playing mafia wars LOL. My question are: i. How long does a sub magnet stays magnetize? In my place 33c-35c is considered a normal sunny day. ii. Does heat from the sun + heat from playing music will effect the magnet strength? iii. Does keeping the sub in the closet (its bare and I didnt put it in the box) will have other effects like rust, deterioration of rubber, spider getting weaker etc? Btw I own 2 15Q's which I bought back in 2007

I'm not speaking about the whole xbl^2 driver but I did listen to my bro brahma mk1. While its bottm end is sweet, it has problem keeping up with the high. IIRC Wiggins mentioned that you need a dedicated midbass to match with the Brahma and then came out the extremis.

well with port lenght of 25" i've got 33hz with net volume of 6.65 cu ft. You need 27.5" port lenght to give you 32hz with net volume of 6.56 cu.ft

uhmm you have the box dimension?

Thank all, I bet he will be disappointed with the sub output and I will be waiting to buy it from his hands soon. Would anyone can compare them to the Brahma mk1. I only had a chance to play with a 15 brahma (actually two) powered by the trusted revo amp. And the brama did excellent in both ported and sealed.

Well he bought that sub already and I didnt even know about it until few days ago when he received it. Thats where I got the box recommendation. Anyone else tried ported? I remember someone did a ported box review on them but couldnt find it.

A friend of mine had bought the new mag paired with the Sundown SAE1000. Now this is the first sub that he owns and this is the first time I seen a mag. After searching in vain for box recommendations, I seem to have the conclusions that the mag is for sealed enclosure based on the recommended box volume on their site. Does anyone knows would it shine in ported as well? If yes what would it be the ideal volume and tuning? Also he would like more output in his sub so I might design a ported box for him.

Doesnt hurt to run 1500w on the BTL's. You could always increase efficiencies by building a larger ported box. There are more ways to get loud, either by lots of power or by having a large ported box or even both.

I would go with 2500w rms instead as power at birtsheet are rated at 14.4v.

Any idea what box would you fit in? Also what amp would you power this sub?

Still surprise why ppl still relate the brahma with spl. IIRC Scottie J tested the brahma and tempest in SPL applications and the tempest was louder. I would get the mag without hesitate .... if only they have 15 or 18.

IIRC Scott mentioned that the SX has more motor force than the Q but less than the BL.

It floats around 14.4-14.6v for slow charging and around 15.5-16v for fast charging. Guess I should unhook them first for safety measure.

uhhmm remembered a single 18 BTL did 170 with the JBL crown, but I forgot who.

I used the WinIsd alpha over the years with success especially for port size and length. I always counter check it on here http://www.carstereo.com/help/Articles.cfm?id=31 Normally I would get the same result except in 1/100 decimal place. Also Scott did mention that its not recommended to have a very long port which I forgot why though.

Thanks Bought a pair of Y splitter and everything is what its suppose to be. Will do scopping to check whether the amp is not damage.