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Box impendence rise??

 

_JW_
Bronze Member
Username: _jw_

OH

Post Number: 19
Registered: Jul-06
Posted on   
How to you find your box's imp. rise?
 

MuDDy
Gold Member
Username: Basshead86

Google is your Friend, FL

Post Number: 4741
Registered: Aug-05
Posted on   
marshall will know.

he is the Box King®
 

_JW_
Bronze Member
Username: _jw_

OH

Post Number: 21
Registered: Jul-06
Posted on   
bump for marshall
 

_JW_
Bronze Member
Username: _jw_

OH

Post Number: 22
Registered: Jul-06
Posted on   
bump for marshall
 

_JW_
Bronze Member
Username: _jw_

OH

Post Number: 23
Registered: Jul-06
Posted on   
Also, when making your own flared ports,what do you use to mold/flare the pvc?

sorry for the double post
 

[Kéviñ_Previé]
Silver Member
Username: Frkkevin

Lake Worth, Texas US

Post Number: 453
Registered: Nov-05
Posted on   
just use a PVC tube to desired size.. and get a metal mixing bowl.. put the PVC end onto the mixing bowl and heat it up until you get the desire flare :-)
 

_JW_
Bronze Member
Username: _jw_

OH

Post Number: 24
Registered: Jul-06
Posted on   
pics?
 

[Kéviñ_Previé]
Silver Member
Username: Frkkevin

Lake Worth, Texas US

Post Number: 458
Registered: Nov-05
Posted on   
Upload
Upload
Upload
 

Chad Lee
Gold Member
Username: Bestmankind

Los Angeles, CA USA

Post Number: 4943
Registered: Oct-05
Posted on   
thats pretty good kevin. nice idea man.
 

TJ
Gold Member
Username: Thomas_g

NM

Post Number: 1528
Registered: Oct-05
Posted on   
lol thats fu*kin awsome man!!!
 

TJ
Gold Member
Username: Thomas_g

NM

Post Number: 1529
Registered: Oct-05
Posted on   
wut did u heat it up wit??
 

mat dope
Silver Member
Username: Adddisorder

West palm, Florida

Post Number: 633
Registered: Jan-06
Posted on   
damn that is a really good idea, im going to try that, oh and tj its a heat gun
 

Paul Larrea
Silver Member
Username: Wingmanalive

Pine hill, Nj US

Post Number: 185
Registered: Jun-06
Posted on   
Upload
 

MuDDy
Gold Member
Username: Basshead86

Google is your Friend, FL

Post Number: 4759
Registered: Aug-05
Posted on   
that is a very good idea.

props to you for doing something so simple in car audio, that none of us tech heads could think of it. LOL:-)
 

James Longo
Gold Member
Username: James1115

Ct

Post Number: 6420
Registered: Dec-04
Posted on   
very nice:-)
 

marshall white
Gold Member
Username: Southernrebel

Monroe, Louisiana USA

Post Number: 3166
Registered: Mar-04
Posted on   
yep...that works great for 4" pipe. didnt i show yall my bowl mold awhile back for 4"? (maybe it was on another board)

6" gets alot trickier, the pipe tries to buckel if you dont have support inside the pipe...you pretty much have to build a good mold if you wanna flare very large at all.

------------------------------

To find box rise you need a true RMS multimeter and an amp clamp.

run a tone to your sub and measure both AC voltage and current. do NOT put the meters on peak hold. hold the tone for 3-5sec and read the meters at the same time!!!

Volt / Amps = Imp

that will give you box rise at that frequency...it will be different at every freq.
 

_JW_
Bronze Member
Username: _jw_

OH

Post Number: 26
Registered: Jul-06
Posted on   
marshall do you have pics of the mold you made for 6" pipe?
 

_JW_
Bronze Member
Username: _jw_

OH

Post Number: 27
Registered: Jul-06
Posted on   
/\ bump
 

marshall white
Gold Member
Username: Southernrebel

Monroe, Louisiana USA

Post Number: 3184
Registered: Mar-04
Posted on   
i dont have any pics of it, sorry...i'll take some next weekend.
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