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Just got my new box from TCAB with my SE10 in it

 

Silver Member
Username: Ishkabobble55

Erie, Pennsylvania

Post Number: 179
Registered: Jul-05
this thing looks cool!! the ports are huge and these arent even the biggest he has! i like it but he takes way way too long to get it to you. but i think it was worth the wait. i will install it soon and test it to see how much of a difference it will make.Upload
Upload
Upload
 

Gold Member
Username: Chaunb3400

Huntsville, Alabama U.S.

Post Number: 5171
Registered: Jul-05
How big is that box???
 

Silver Member
Username: Ishkabobble55

Erie, Pennsylvania

Post Number: 180
Registered: Jul-05
15x15x22 i think, i was forced to measure with a 6" ruler. i think the ports are like 19"-20" long though
 

Bronze Member
Username: Scott_debaker

Pittsburgh, P.A. U.S.A.

Post Number: 59
Registered: Feb-06
if there 19 or 20 long then that would give u about 1.25 or 2.25 from the wall anit u supose u have it like say ur port is 4in. wide shouldnt u have it 4inch away from the wall
 

Silver Member
Username: Ishkabobble55

Erie, Pennsylvania

Post Number: 181
Registered: Jul-05
i got about 3.5" from end of port to box wall. i just hooked this thing up in my truck temporarily on 150watts rms at 37hz and this thing was sweet, it hurt! just off 150watts! cant wait to see what this thing will do wen its powered correctly.
 

Gold Member
Username: Southernrebel

Monroe, Louisiana USA

Post Number: 2080
Registered: Mar-04
if that box is infact 15"x15"x22"...that would give you roughly 2.2cuft (gross)

after sub and port displacments...that would be ~1.8cuft(net). but box looks quite a bit bigger than 1.8cuft!!???!!!

what freq did they tune that box to?

(if my calculations are correct...its tuned to ~41hz...that is if the box is actually 22x15x15 and the 2 4" flared ports are 20" long)
 

Silver Member
Username: Ishkabobble55

Erie, Pennsylvania

Post Number: 183
Registered: Jul-05
they are tuned to the low 30's
 

Gold Member
Username: Southernrebel

Monroe, Louisiana USA

Post Number: 2081
Registered: Mar-04
can you measure the boxes outside deminsions and port depths again? and post them?

that looks like a dam nice box.

 

Silver Member
Username: Ishkabobble55

Erie, Pennsylvania

Post Number: 186
Registered: Jul-05
ok heres a pic with the measurments and the ports are 18" longUpload
 

Gold Member
Username: Southernrebel

Monroe, Louisiana USA

Post Number: 2085
Registered: Mar-04
i just dont see how TCAB can claim that box is tune in the low 30's w/ 2 4" ports...

when i run the numbers, i come up w/ this:
external diminsions---14.5"x15.5"x21"
internal gross volume---2.05cu ft
volume after all displacments---1.65cuft (net)
tuned to 44.25hz---2 4" ports

those are 4" diameter flared ports right??? cause if they are 3" diameter flared, then yea...2 3" ports 18" long would tune that box to 32.75hz.

if they are infact 4" ports (they look like they are)...there is no way that box is tuned in the low 30's.

does that box have 1/4 pipe corners? and is it resined?
 

Silver Member
Username: Ishkabobble55

Erie, Pennsylvania

Post Number: 189
Registered: Jul-05
it is resined and from one side of the port end to the the other equals 7.25", the inside of the port from side to side is 4"
 

Silver Member
Username: Terry6405

Sullivan, IN US

Post Number: 234
Registered: Sep-05
howd you figrure that marshal? ive been trying to calculate mine tuning but i cant i have square ports thou, how do i do that?
 

Silver Member
Username: Ishkabobble55

Erie, Pennsylvania

Post Number: 190
Registered: Jul-05
and the ports from very end to very end are 17.5" each the end of the port is about 2.75" away from the other end of the box. sorry my first measurements were a little off
 

Gold Member
Username: Southern_bass

Paris, Tennessee U.S.

Post Number: 1549
Registered: Dec-05
i wanna see how ur se is gonna perform now...all i know is that box looks real nice
 

Silver Member
Username: Ishkabobble55

Erie, Pennsylvania

Post Number: 191
Registered: Jul-05
i have a cd with test tones on it now if i play the tones until i find the one that sounds the loudest would that one be what my ports are tuned to? cause it seemed like 35, 36, and 37hz were the loudest
 

Gold Member
Username: Tdeaton1021

Near Tampa, Florida USA

Post Number: 1764
Registered: Sep-04
i believe flared ports make the tuning slightly lower than reg ports... but to go form 44 to low 30s is a lot... idk. how about ask the guy who built it lol.
 

Silver Member
Username: Ishkabobble55

Erie, Pennsylvania

Post Number: 194
Registered: Jul-05
oh man i hope it performs great!! but marshall i found a port length calculater on www.the12volt.com but this is what i honed it down to,

port diamiter=4"

box volume=1.65cu ft

tuning frequency=31.7hz

after it calculated port length it cam up with 17.49881"

it should be right aslong as that calculater was right and you don have to do something different for 2 ports
this is the site
http://www.the12volt.com/caraudio/boxcalcs.asp

 

Gold Member
Username: Southernrebel

Monroe, Louisiana USA

Post Number: 2094
Registered: Mar-04
yes...it totally changes to tuning of a box if you have 2 18" long ports instead of 1.

i agree w/ you that w/ 1 4" port ~18" long that box would be tuned in the low 30's....but your box has 2 4" ports. (since you have 2 ports, thats double the port area...both ports have to be longer...MUCH longer)

go here:
http://www.bcae1.com/spboxnew2.htm

scroll down about 1/4 of the way and type this into the ported box calculator:

15.5
14.5
21
21
.75
.14
44.25
4
2
1

then click calculate...it will giver you port length, net volume, port area, etc...


what i cant figure out is why TCAB told you it was tuned in the low 30hz range...because it is far from it.

in order to tune a ~2cuft box (gross) w/ 2 4" ports to 32hz...you would have to have both 4" ports ~55" long! and then you only have ~1.1cuft net!

all i have to say is WTF? call TCAB and ask them about it, cause your box is not tuned in the 30's.


Trevor,

flared ports dont make a box tune lower...infact if you has a 12" long 4" flared port (tip-2-tip) and a 12" long unflared 4" port, the unflared port would tune a box lower than the flared port. Flared ports have to be longer to tune a box to the same freq. as an unflared port...they just help to cut down on turbulance at the port ends. (and in some cases can add a lil SPL)
 

Silver Member
Username: Safe_cracker

Chicago, IL US

Post Number: 180
Registered: Jan-06
In all of his videos he shows that the boxes produce maximum DB at around 44hz. He also shows that they also produce great amounts of DBs from thelow 30s all the way up to his target HZ, which means it isn't a one hit wonder. I own the box that was in the grand AM and the Monte Carlo video (very same box). I know numbers don't lie when it comes to figuring box volumes and port tuning but I have to say is that this box cranks and playin Soul Survivor , it really hits them lows!. By the way, my dimensions are W- 20.5", D-30.5" and H-15.5", my ports are 4 X 4" @ 17.75" in length flared at both ends, ports are external. Polo.. :-)
 

Silver Member
Username: Ishkabobble55

Erie, Pennsylvania

Post Number: 200
Registered: Jul-05
ok i emailed Mark and this is conversation -


Adam Cole wrote:

hey Mark its Adam again, i have another question. i was telling some
people about my box and they seem to think that instead of being
tuned in the low 30's that it is actually tuned in the mid 40's, so
i went and looked up a port length calculator and put in my box
info and this is what i got when i put in 32 hz as desired frequency-
>>>
>>> number of ports=2
>>>
>>> enclosure volume=1.65cu ft
>>>
>>> desired frequency=32hz
>>>
>>> port diameter=4"
>>>
>>> it calculated that the ports would have to be 37" long.?
>>>
>>> but when i did some experimenting it calculated this-
>>>
>>> number of ports=2
>>>
>>> enclosure volume=1.65cu ft
>>>
>>> desired frequency=45hz
>>>
>>> port diameter=4"
>>>
>>> = a port length of 17.5" which i think mine are...?
>>>
>>> if you want to check it out this is the link to the site
>>> http://www.carstereo.com/help/Articles.cfm?id=31
>>>
>>> thanks again and sorry for buggin ya

Marks response-

Does it sound like its tuned in the mid 40hz range? If that was the
case, it would only be able to be loud at approx 50hz+ . Doesn't
matter what a piece of paper/people say.... how does it *sound* :-)
That definitely shouldn't be the case here... but, let me know.

-Mark

Adam Cole wrote:

> Mark,
> so your saying that if it was tuned in the low 30's it would be
> loud around 40hz? cause it seemed to be the loudest around 35-40hz.
> im not very familier with ported boxes so i dont know anything about
> them. also i didnt have it running at full power, it was only gettin
> 150w rms and the thing was still LOUD!! it sounds great too! thanks
> Adam
> ----- Original Message ----- From: "Mark - TCAB"
<mark@thecaraudiobox.com>
To: "Adam Cole"
Sent: Friday, February 10, 2006 9:32 AM
Subject: Re: RE SE box

Marks next response-

Thats exactly what I'm saying. You will always be louder above
tuning... most people assume you tune a box to 30hz it peaks at 30hz,
thats very far from true. A 45hz tune would sound horrible.

If it sounds good to you, thats the end of it... nothing else really
matters. What works best on paper doesn't always relate to what works
in reality =)

-Mark

 

Silver Member
Username: Safe_cracker

Chicago, IL US

Post Number: 183
Registered: Jan-06
I actually went to his house, nice guy. This guy is VERY knowledgable and knows his stuff and I'll tell you what, it sure turns the heads of these little punks around here running there audioblaaa stuff past my house. I will make a video but I don't have a termlab (yet). Polo..
 

Bronze Member
Username: Anthony1

Post Number: 31
Registered: Feb-06
adam hey i'm thinking about getting a TCAB box how would you rate the box from 1-10 (10 being the highest)? thanks
 

Bronze Member
Username: Anthony1

Post Number: 32
Registered: Feb-06
for some reason it didn't bump
 

Bronze Member
Username: Anthony1

Post Number: 33
Registered: Feb-06
bump
 

Silver Member
Username: Ishkabobble55

Erie, Pennsylvania

Post Number: 204
Registered: Jul-05
SPL-10

SQ-9

looks-10

craftmenship-9 (he mounted the sub way too close to the edge of the box so i cant put the last screw in)

build time-4 (i orderd my stuff dec.22 and got it in the middle of febuary!)

otherwise i think the box was worth the wait and money, its pretty sweet!!
 

Bronze Member
Username: Anthony1

Post Number: 39
Registered: Feb-06
alright thanks adam
 

Bronze Member
Username: Anthony1

Post Number: 40
Registered: Feb-06
i dont think ive ever been able to get this tread to bump n thats a really long time for the box 2 months
 

Silver Member
Username: Ishkabobble55

Erie, Pennsylvania

Post Number: 210
Registered: Jul-05
i got him during the buisy season (all the holidays)
 

Bronze Member
Username: P_f_t

Post Number: 20
Registered: Feb-06
how long did it take to get your box from him?
 

Silver Member
Username: Ishkabobble55

Erie, Pennsylvania

Post Number: 211
Registered: Jul-05
"build time-4 (i orderd my stuff dec.22 and got it in the middle of febuary!)"
 

Gold Member
Username: Logan__tille

RE XXXYeah its 15 ...

Post Number: 3418
Registered: Feb-06
I want to buy that sub
 

Gold Member
Username: Tdbdadrummer

Wellsburg, WV USA

Post Number: 1818
Registered: Aug-05
Marshall, I have a pair of Cerwin Vega V-12F home audio floor standing speakers, and they have a pair of 4" ports on each speaker and are tuned to 28Hz :-). So it's possible!
 

Gold Member
Username: Sploosh56

Ohio

Post Number: 1594
Registered: May-04
i've played around with some boxes that i've made and i've tuned boxes that should have been in he low 40's but when i put a sub in and played them it sounded like the box was tuned to the low 30's maybe even high 20's but with the output of a higher tuned box. My guess is that with the large round ports, the "golden ration" box design, and with the ends of the ports being so close to the walls that that is the reason for the way that these boxes sound. The key is have the ports so close to the back of the walls i think.
 

Gold Member
Username: Tdbdadrummer

Wellsburg, WV USA

Post Number: 1852
Registered: Aug-05
You're exactly right Wahl, my CV's reccommended being at least 3 ft...Ports from walls.
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