DD suggests a 40hz tune on all of their subs. they also suggest using 16sqinches of port per cuft. DD is known for SPL but dont get confused. i bet they know a thing or two about making a sub sound good. they even state on their site they care about SQ and their suggestions will get you SQ. my question is would you follow their suggestions? 16sqin per cuft and 40hz tune? also, i wonder if all SPL orientated subs soung good like this... example, RE MT 15, 40hz tune. 4cuft, 64sqinches of port. usually SPL subs sound better with larger port areas... so is their a method to their madness?
and if your all kinda confused on what im asking... whats your opinion on DD's advice?
I've wondered that too. I may try it with the treos when they come in, but for 2 15s that in a 6 cu. ft. net box, and its 16inches tall. So therefore my port would have to be like 6inches wide. Wouldnt this be a lil too big?
i was wondering the same thing i posted it a little while ago asking rovin about it cause i was thinking about tuning my box to 38 for my dd 9512 and i was also told that the 9500 series is very good on the sq side aswell cause they arent made actually for spl but for studio use and in a studio you dont want bad sounding music so they are actually designed with sq in mind alot of people that own them say they keep up with everything and play every note perfect someone even compared it to the idmax not saying its true but just waht i heard lol
idk y they would rec 40 (maybe its 4 SQL) looking @ the T/S on a sub like their 12" 9500 series its Fs = 34 hz . They would know what they r rec 2 ppl but i remember reading that its best if u tune a box just above its Fs .
imo - i'd prolly go like 35/36hz for the most if u want SQL ....
which means at that frequency in free-air, the subs VC rises in impedance, which lower the effectiveness of your amp to power it. so oyu would need more power to achieve the same output at that hz level. so basically, it is pointless to tune oyur box below the Fs on a sub.
if i am wrong in anyway, please don't hesitate to correct me, accuracy is my main concern. lol
Makes sense to me. I thought impedance rise occured in almost all ported boxes tho, at least i remember reading that on a post on here. So does impedance rise only occur when a sub is playing below its Fs?
doesn't Treo reccomend alot of low tuning on boxes? if i remeber correctly i thought the tuning for the ssi10 was like 27hz. or atleast around 30 i dont remember. my brother is probably wanting it to be sealed though.... if he lets me port it im not sure what tuning im giong to go with yet.
Treo recomends DD tuning for the longest time, I remember in the past... nothing has really changed with their subs.. MY boi with the 4 TSXs is tuned @ 38hz, and he recomends me do it @ 40hz... especially with the power im using, its gonna crack something in half and sound excellent! THE SQL is not even comprehendable in his Tahoe!! Tell your brother to tune the TREO SSI to about 35hz or so... I wouldnt even seal it, let it do its job correctly!! A Treo ported sounds even better than sealed... I dont know why it works this way...
yeah, but i really want it to be louder than a 12L7 sealed. he doesnt want it to be(he doesnt care if it is though) and i already know its ging to sound better. it would just be a good lesson for him to learn that the L7 isnt the greatest sub by having a 10 inch round sub beat it up
hes going to pull they whole "only sealed boxes can have punchy bass" because he likes classic rock and hard rock as well as country and rap when hes going to the club. which i can assure him hes wrong, a well ported box can too. but he never believes me about anything! and i have to do what he wants, it is his truck. you know what. i'll use my own money to build a ported box and if he doesnt like it i'll do it sealed. i mean whats it gonna cost me. 25$? no biggie to put a smile on some1s face
question though. it your guys opinion, or fact if you know.... at what tuning does a sealed box have more output down REAL low than a ported. say the 30-40hz region. will a 35hz tune be louder at 30hz (with SSF) than a sealed? it should atleast be the same right?
yes Jake Treo sealed will sound excellent, but the ported still can hold its own.... The question is enclosure, the correct box built to specs, either ported or sealed... Treos in general get-off in ported boxes, sq wise and spl..
technically the sealed will get lower, but ported will get almost as loww, and sound way louder, & u can feel it!! otherwise, u will be givin a sealed box, lots of power, trying for that same effect...
"sealed will get lower, but ported will get almost as loww" depending upon tuning. if you tune at 30hz the ported will have tons more output down low than a sealed. thats why i cant decide what i want to tune at. i will give Treo a call this week n see what they have to say though.
Polo, i dont think that statement is true at all... lol
well 4 TSX ported @ 38hz, is low enough to vibrate parts in ur head... i will never forget that!! It gets low man, this wasnt no SPL loud, lol... IT WAS LOWWW!! its not only loud but extraordinary low... think about it, his box is tuned low for a SPL box, and other competitors want to get their spl setups sounding low like his... Its his daily driver Trevor..
Low is when its sets off 100 car alarms at the same time!! Like a earthquake.. Im a witness..
i think what Polo meant was that with a circle/pipe port its easier 2 change out if u wanna go lower or higher freq but with a slot port ur pretty much stuck with it , permanent no options .
Also if space is a consideration pipe ported box will take up less space too (& its lighter too) , ur choice 2 decide whats best 4 ur application .....
yes, a pvc port takes up less volume but depending on the instal can be in the way even more. for example. if i have to have both the port and sub firing down, and i only have say 14 inches to work with, a 4 inch flared port and a 10 inch sub comes out to 16 inches. any1 have experience with an install with sub firing down and port firing up? or maybe port firing forward. i think i want to use a 4 inch flared port to enhance SPL and SQ.
i've heard my treos in sealed first then i changed it to a 30hz tuned box. the ported got louder and cleaner. i was suprised cause the other subs i had sounded cleaner sealed but the treo sounded better ported. lol.
