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View Full Version : Anyone wanna build be a single 10" bandpass enclosure?



Chris Z
01-01-2010, 04:45 PM
I'm thinking a lot about getting a 10" AudioQue SDC2.5 and I want a good mix of SPL and SQ as well. The specs are here: http://www.audioque.com/aq/?page_id=22 but the recommended port volume is between 1.2-1.5 and on a completely separate page of the site. Are there a good amount of people on here that design bandpass boxes? I'd definitely have to see some pictures of your work before I decide on the designer though.

Thanks!

SicAudio
01-01-2010, 05:04 PM
why bandpass? thats the last thing you want for sq.
a 4th order is for sq
a 6th is for very loud in a very narrow passband.

marcotheclepto
01-01-2010, 05:40 PM
from what ive heard aq/DD subs don't perform well in 4th orders. id just stick with a ported enclosure. but im no expert on these subs or bandpass. i can however design/build a ported enclosure. http://www.caraudio.com/forum/showthread.php?t=453793 if its small enough to fit my scrap sheets then ill do 35+ shipping. basically to get my name out there in building/ also to get rid of spare stuff taking up space.

pm mobieous 80INCHES iamamp3pimp for some help with bandpass design.

SicAudio
01-01-2010, 05:42 PM
YOU ARE CORRECT

thats why i asked lolz

TaylorFade
01-01-2010, 05:43 PM
I thought 4th order was a bandpass? I see it most commonly referred to as a "4th order bandpass."

SicAudio
01-01-2010, 05:47 PM
it is a type of bandpass yes
the subs are in a sealed enclosure with the subs firing into a ported chamber

SicAudio
01-01-2010, 05:48 PM
a 6th is 2 ported chambers

chaunb3400
01-01-2010, 05:49 PM
How about somebody build me a T-Line for a 10" Diamond D6

SicAudio
01-01-2010, 05:51 PM
lol

Chris Z
01-02-2010, 12:05 AM
Ok...so who is an expert on Audioque subs and the enclosures they belong in? For the sub I'm getting - it needs between 1.2-1.5 cu ft so I'd probably like it to have about 1.4 cu ft volume after displacement. Look at the specs in the link in my first post to see how the box needs to be designed.

SicAudio
01-02-2010, 12:11 AM
you dont need to be an expert on aq subs to design the enclosure really the enclosure does it all not the sub. the sub just does what it does in the space you give it.
i'd say 1.5 to 2.0 cf is a better option to really bring out the lows a lil better but thats just my opinion.

Random1010
01-02-2010, 12:15 AM
why bandpass? thats the last thing you want for sq.
a 4th order is for sq
a 6th is for very loud in a very narrow passband.

So you said a bandpass is the last thing one wants for sq...and then says a 4th order bandpass is for sq..

I'm missing your logic here.

SicAudio
01-02-2010, 12:20 AM
even tho a 4th order is a passband alignment i dont consider it a true bandpass any ported enclosure is technically a passband enclosure.
just a dif in terminology is all.

Chris Z
01-02-2010, 12:22 AM
All right, seriously...I'm looking for some offers here, not a lesson on enclosures.

Random1010
01-02-2010, 12:24 AM
even tho a 4th order is a passband alignment i dont consider it a true bandpass any ported enclosure is technically a passband enclosure.
just a dif in terminology is all.

A 4th order Bandpass is A BANDPASS. You're terminology doesn't negate this fact. And 4th orders are rarely "for sq" as you say.

SicAudio
01-02-2010, 12:24 AM
do you want a 4th order a 6th order or a slot loaded box?
the slot loaded is gonna be the most ideal

SicAudio
01-02-2010, 12:28 AM
A fourth order enclosure (vented box) is a sealed enclosure with the additon of a port tuned to a specific frequency. The port extends the low frequency response of the basic sealed enclosure usually providing a lower cut-off frequency. The enclosure offers a good transient response (second to that of a sealed enclosure), good power handling within it's bandpass region, and excellent efficiency making it a popular choice for many competitors and everday users, but below the tuned frequency power handling is poor and damage to the woofer is likely to occur if over driven. Lowering the port frequency below that of the manufacturer's recommended frequency will only worsen matters and cause the sound to become "muddy"....bleah!

that comes from a well respected source ;)

SicAudio
01-02-2010, 12:29 AM
like i said for increased output over sealed and better sq than a standard ported enclosure a 4th order is just that it combines sealed with ported basically so that you get the best of both

but a normal ported box is just fine

Random1010
01-02-2010, 12:30 AM
So let's say Sealed is a 10. If a 4th order is a 3, 6th order a 2, does that still make it an "sq" enclosure? No. A vague statement doesn't defend your weak argument. Stop spreading misinformation. OP, just PM a respected bandpass guy on here (gmonk, 80inches, mobieus, any others I'm forgetting)

Random1010
01-02-2010, 12:31 AM
like i said for increased output over sealed and better sq than a standard ported enclosure a 4th order is just that it combines sealed with ported basically so that you get the best of both

but a normal ported box is just fine

Yes thank you, I'm familiar with what a 4th order is..

SicAudio
01-02-2010, 12:33 AM
lol several of them is where the info stemmed from ;)
you want the link to it dude. i got it right here
how do you determine sealed is 10 and a 4th is only 3 lolz seems like you are misinformed have you ever built 1? do you even have a clue what the correct sealed to ported ratios are?

didnt think so........

Chris Z
01-02-2010, 12:34 AM
All right I'll just go with a ported enclosure.

SicAudio
01-02-2010, 12:34 AM
you forgot pvaudio as well and cianzo
who do you think i learned 4th orders from ?

Random1010
01-02-2010, 12:36 AM
lol several of them is where the info stemmed from ;)
you want the link to it dude. i got it right here
how do you determine sealed is 10 and a 4th is only 3 lolz seems like you are misinformed have you ever built 1? do you even have a clue what the correct sealed to ported ratios are?

didnt think so........


I didn't determine them. I was using an analogy to show you how vague your statement is. Yes, I've built quite a few. More than I can remember actually. Go sell some of those amps you're always trying to pawn off on people. :)

I didn't forget PV and Ciaonzo. I thought PV was done for a bit, and I know Shane is doing other things. But nice name dropping..

ciaonzo
01-02-2010, 01:06 AM
A fourth order enclosure (vented box) is a sealed enclosure with the additon of a port tuned to a specific frequency. The port extends the low frequency response of the basic sealed enclosure usually providing a lower cut-off frequency. The enclosure offers a good transient response (second to that of a sealed enclosure), good power handling within it's bandpass region, and excellent efficiency making it a popular choice for many competitors and everday users, but below the tuned frequency power handling is poor and damage to the woofer is likely to occur if over driven. Lowering the port frequency below that of the manufacturer's recommended frequency will only worsen matters and cause the sound to become "muddy"....bleah!

that comes from a well respected source ;)

This isn't describing a bandpass enclosure. Simply a vented enclosure which happens to yield a 24dB per octave roll-off which is 4th order.

Not trying to say anything, just sayin'.

SicAudio
01-02-2010, 01:13 AM
which is why i say a 4th order is not a true bandpass enclosure terra says it is i say it isnt dif of opinion or no?

good for sq or no?
i assume with a 24db rolloff it is pretty dang accurate right?

if i am wrong continue educating me as a most definately respect your opinion more than most anyone elses.

ciaonzo
01-02-2010, 01:20 AM
which is why i say a 4th order is not a true bandpass enclosure terra says it is i say it isnt dif of opinion or no?

good for sq or no?
i assume with a 24db rolloff it is pretty dang accurate right?

if i am wrong continue educating me as a most definately respect your opinion more than most anyone elses.

Well, I think this misunderstanding is stemming from how often the term "4th order" gets kicked around by people who have no idea what they're talking about. The whole "order" thing with bandpass enclosures is a misnomer anyway. The term isn't used to describe the roll-off characteristics like it is with sealed (12dB/octave), vented (24dB/octave), or passive radiator systems (28-29dB/octave). It's applied in more of a degree fashion.

SicAudio
01-02-2010, 01:23 AM
ok thank you Cianzo
**** you are good ;)

ciaonzo
01-02-2010, 01:27 AM
ok thank you Cianzo
**** you are good ;)
Nice of you to say, thanks.

Random1010
01-02-2010, 01:28 AM
Nice of you to say, thanks.

I swear I should hire you for something!!
:)

chaunb3400
01-02-2010, 01:30 AM
op where in al do u live

ciaonzo
01-02-2010, 01:30 AM
I swear I should hire you for something!!
:)

lol

I'll have my people check my schedule and get back to your people.

Chris Z
01-02-2010, 01:38 AM
op where in al do u live

Huntsville! I'm David's friend - I've met you before.

80INCHES
01-02-2010, 12:57 PM
Ok...so who is an expert on Audioque subs and the enclosures they belong in? For the sub I'm getting - it needs between 1.2-1.5 cu ft so I'd probably like it to have about 1.4 cu ft volume after displacement. Look at the specs in the link in my first post to see how the box needs to be designed.

if u want any kind of bandpass for 1 10inch sub and still try to have it fit within 1.2-1.5 cubes....u better off goin ported....bandpass wont fit...ur ported chamber for any 4th or 6th order bandpass will be atleast 2 cubes after sub and port displacement

go ported and call it a day
do 1.5 cubes tuned to 40hz...those aq subs should still get u down in the 30's and still have decent output for spl numbers near ur vehicals frequency

80

Chris Z
01-02-2010, 10:21 PM
Anyone wanna build me a box with the specs 80 supplied?

marcotheclepto
01-02-2010, 11:49 PM
Anyone wanna build me a box with the specs 80 supplied?

try to find someone here locally if you cant id be willing to do it for you. when i find some time. for 40 + shipping + materials.


sheet of mdf here is like ~29 after tax. will fit on one sheet depending on dimensions. will be less than half bottle of titebond most likely.
so really looking at like ~70+ shipping bare MDF

SicAudio
01-02-2010, 11:53 PM
good deal there i wont do a box for less than 75 plus shipping

marcotheclepto
01-02-2010, 11:56 PM
good deal there i wont do a box for less than 75 plus shipping

im new to the game, and make 25 cents above minimum wage at my current job so every little bit helps ( references and money wise.)

SicAudio
01-02-2010, 11:57 PM
then i refuse to make him a box so that you can lolz ;)

marcotheclepto
01-02-2010, 11:59 PM
then i refuse to make him a box so that you can lolz ;)

hahaha thanks :)

supermaxx123
01-03-2010, 12:10 AM
how much does shipping a box cost?

marcotheclepto
01-03-2010, 12:11 AM
depends on size and weight for this one i got a basic design(havnt heard from OP but just dimensions to work for space/tuning) done and it looks like 30-45


not sure of final weight....

supermaxx123
01-03-2010, 12:17 AM
I thought it would be a lot more. I just shipped a 12IDMAX and that was 30lb's cost $33.

SicAudio
01-03-2010, 12:21 AM
30-45 is average using parcel post

Chris Z
01-03-2010, 02:48 AM
Sorry, my car isn't accessible at this time, I won't be back home until late next week. Here are the dimensions of my current box, which I assume this box would not exceed, since this is for one sub and my current one is for two subs. Anyway...those dimensions were 31" wide, 16" high and 13.75" deep. I'd like to go with 80INCHES specs and go with the 1.5 cu ft after displacement and the port tuned to 40hz and here are the specs of the sub that I want to fit into this box:
Model SDC2.510
Woofer Size 10″
Fs 33 Hz
Qts 0.414
Qes 0.465
Qms 3.759
Vas 14.98
Le mH 1.90
Sensitivity 1W/1m 87 dB
Magnet Weight 140 oz
Coil Diameter 2.5″
Useable Throw 2.3″
Continuous Power 600
Music Peak Power 1200
Mounting Depth 6.25″
Circle Cutout 9.35″
If at all possible, I would love to take off 2-4 inches of height on the box with the dimensions I gave you (so it would be 12-14" height) and I'm sure the box wouldn't require 31" of width. Correct?

And sorry for the late response, it took me a while to dig up those dimensions.

chaunb3400
01-03-2010, 02:52 AM
Sorry, my car isn't accessible at this time, I won't be back home until late next week. Here are the dimensions of my current box, which I assume this box would not exceed, since this is for one sub and my current one is for two subs. Anyway...those dimensions were 31" wide, 16" high and 13.75" deep. I'd like to go with 80INCHES specs and go with the 1.5 cu ft after displacement and the port tuned to 40hz and here are the specs of the sub that I want to fit into this box:If at all possible, I would love to take off 2-4 inches of height on the box with the dimensions I gave you (so it would be 12-14" height) and I'm sure the box wouldn't require 31" of width. Correct?

And sorry for the late response, it took me a while to dig up those dimensions.

I can help you and Im local ;)

SicAudio
01-03-2010, 03:03 AM
their ya go ;)

Chris Z
01-03-2010, 03:08 AM
Ygpm, chaunb3400! :)

marcotheclepto
01-03-2010, 09:00 AM
I can help you and Im local ;)

heres your man :)