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What happens if you port below fs Anybody

 

Silver Member
Username: Kravenblood

Ohio DD Z1 you wi...

Post Number: 194
Registered: Aug-05
say a speaker has a fs of 27 what would happen if you port it to say 20hz
 

Gold Member
Username: J_baby15

Kentucky

Post Number: 1177
Registered: Feb-06
it wont hurt it.
 

Gold Member
Username: Cenus

Hicksville, Ohio

Post Number: 2829
Registered: Jan-05
it would be pretty pointless though, if the sub sees a hz lower than the fs the impedance spikes majorly so the subs would be seeing little power, the lower tuneing wouldn't hurt nor help the sub.
 

Platinum Member
Username: Chaunb3400

Huntsville, Alabama U.S.

Post Number: 11211
Registered: Jul-05
no point in tunning that low anyway...lol
 

Silver Member
Username: Devastation101

Audioque SD2.5-ville, HENDERSON, NC VP of 15 Wan...

Post Number: 868
Registered: Feb-06
what about tuning above the recommended fs. For example, my SD2.5's have a recommended fs of 32hz, and my box is tuned at 40hz for 2 15"s. How much of difference does this affect the the overall sound?
 

Silver Member
Username: Jkidder

Spring hill, Florida Usa

Post Number: 276
Registered: Nov-05
how the sd2.5's sound? im thinkin of gettin 2 12's tell me wat u think.. sq n' spl wise. thanks
 

Gold Member
Username: Tdeaton1021

Near Tampa, Florida USA

Post Number: 3666
Registered: Sep-04
the fs isnt the "tuning point". more common than not, the port tune is higher than the fs.
 

Silver Member
Username: Devastation101

Audioque SD2.5-ville, HENDERSON, NC VP of 15 Wan...

Post Number: 872
Registered: Feb-06
SPL---WOW! and SQ---Great, surprisingly. To me they are very underpriced and underrated. Most people say that are around the DD's 2500 series, I'd say they are greater or equal to more the 3500 series!
 

Gold Member
Username: Tdeaton1021

Near Tampa, Florida USA

Post Number: 3667
Registered: Sep-04
wow, my above post is three triple 6 mafia lol
 

Gold Member
Username: Tdeaton1021

Near Tampa, Florida USA

Post Number: 3668
Registered: Sep-04
"I'd say they are greater or equal to more the 3500 series!"
thats a bold statement considering they are from the same buildhouse and people dont just "say" that. they basically are lol. but on your side, the 2500 can kick some as$ too lol.
 

Silver Member
Username: Devastation101

Audioque SD2.5-ville, HENDERSON, NC VP of 15 Wan...

Post Number: 873
Registered: Feb-06
Ok, So Trevor, since my box is tuned at 40hz, and the fs is at 32, it's not a big deal if my port tune is not matching it or close to it?
 

Gold Member
Username: Nyyfan13

Fi SSD USA

Post Number: 2909
Registered: Jul-06
hate to butt in here, but how much is a 12" sd2.5?
 

Silver Member
Username: Devastation101

Audioque SD2.5-ville, HENDERSON, NC VP of 15 Wan...

Post Number: 874
Registered: Feb-06
oh yea, and thanks for the busting my bubble^^ lol I just feel that they are way better than accredited!
 

Silver Member
Username: Devastation101

Audioque SD2.5-ville, HENDERSON, NC VP of 15 Wan...

Post Number: 875
Registered: Feb-06
$159 shipped!
 

Gold Member
Username: Nyyfan13

Fi SSD USA

Post Number: 2910
Registered: Jul-06
damnn good deal...thanks
 

Gold Member
Username: Tdeaton1021

Near Tampa, Florida USA

Post Number: 3670
Registered: Sep-04
trell, they are worth more than what you paid, feel better? lol and no your fine with a 40hz tune. AQ and DD subs like a higher tune. DDs site has all 40hz tune plans... id go with anywhere form 36-40 with AQ or DD for a SQL setup. of course for SPL just below RF.
 

Silver Member
Username: Devastation101

Audioque SD2.5-ville, HENDERSON, NC VP of 15 Wan...

Post Number: 877
Registered: Feb-06
One more dumb question...right now I have an Audiobahn HCT series amp on my 15's, don't ask why, and they are only seeing 150watts continuous, how much of a difference will that be when I get my Memphis 16-MCD1000 back in a couple of weeks? I mean, that's 150w apiece to at minimum 600 a piece! They get hella loud now, I can only imagine...
 

Gold Member
Username: Cenus

Hicksville, Ohio

Post Number: 2831
Registered: Jan-05
the tuneing really doesn't matter when compared to the fs, when you go below the fs the ohms rise is A LOT so essentially the sub will see not much power, so the output will go out the window, the higher you tune a box the more spl you will get to an extent, the reason DD likes higher tunings is because they have stiff spiders. also trell have you ever heared a 3500, if not your comparison means nothing.
 

Gold Member
Username: Tdeaton1021

Near Tampa, Florida USA

Post Number: 3671
Registered: Sep-04
Trell, prepare to be amazed.... you should, according to theory, gain appx 4.5 db going from 300w to 1000w.
 

Platinum Member
Username: Chaunb3400

Huntsville, Alabama U.S.

Post Number: 11216
Registered: Jul-05
"I'd say they are greater or equal to more the 3500 series"

Hmmm

3500>>SD2.5

2500>SD2.5

there nice subs...but not on the same level as the 3500, or 2500....still nice subs though..
 

Silver Member
Username: Devastation101

Audioque SD2.5-ville, HENDERSON, NC VP of 15 Wan...

Post Number: 880
Registered: Feb-06
Damn, I can't wait! lol Yea Chauncey, Trevor already got bust my bubble on that one, didn't need it again! lol But um, I'd say that it's probably 2500=2.5 than anything!
 

Platinum Member
Username: Chaunb3400

Huntsville, Alabama U.S.

Post Number: 11218
Registered: Jul-05
Overall...we all no the truth no need to say it againlol
 

Gold Member
Username: Tdeaton1021

Near Tampa, Florida USA

Post Number: 3674
Registered: Sep-04
wellllll.... technically a 2500 is probably better..... but when you look in the spl standpoint its only in the .x's im sure and SQ is proably about the same as well.... dont worry trell you have amazing subs on your hands. and you could easily give them 2000wrms.

the HD3 was said to be only .6db off the 9500 and its only other downfall is the cooling...which it can still take like 3kw daily and probably around 10kw burps if not more??
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