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- Rovin's car audio - wrote:few days ago a customer come with a locally made 8" T-line he bought from some guy selling it online , it had a long dacron sheet running INside d port , apparently was added in b4 d enclosure was assembled
i didnt get to hear it as d guy said it didnt sound good as another regular slot port he also bought cheap online & had no sub in it as he was going to resell it .... what yall think of that 1
Brian Steele wrote:- Rovin's car audio - wrote:few days ago a customer come with a locally made 8" T-line he bought from some guy selling it online , it had a long dacron sheet running INside d port , apparently was added in b4 d enclosure was assembled
i didnt get to hear it as d guy said it didnt sound good as another regular slot port he also bought cheap online & had no sub in it as he was going to resell it .... what yall think of that 1
Two things:
1. Almost all the car audio "T-lines" that I've seen online have been designed using classical method for designing a straight TL, which are both flawed and obsolete. Any time you instructions starting with "set the cross section of the line to be the same as the driver", that's the classical (and flawed) approach.
2. The "classical" approach did call for damping the line with some sort of fill (probably to damp out the nasty resonances caused by putting a driver in a box that it's totally unsuited for).
kavaninho wrote:NB those ported boxes with flared ports don't qualify as horns. I'm seeing alot being passed off as back loaded horns.
Brian Steele wrote:kavaninho wrote:NB those ported boxes with flared ports don't qualify as horns. I'm seeing alot being passed off as back loaded horns.
I've heard them referred to as "Big Vent Reflexes", or BVRs. Like end-loaded TLs, they usually feature a nice big notch in the midbass frequencies. Not really a design I'd use in a car audio environment.
nick639v2 wrote:You still have the build post for the gallery setup u own? The tuscon na.. looking to try my hand on the sub
Rovin's Audio wrote: i have owned\used IA subs & imo if u tune them high u wasting a good sub , like most american brands they were built for their market : to hammer d lows with alot of smooth overall output , not what locals do to them ex tune it 45hz for loudbass
brakefluid wrote:An enclosure does not give a sub more or less wattage. It can just sound louder/quieter and various frequencies.
brakefluid wrote:There is no acoustic advantage between slotted and pvc ports absolutely none.
There are however advantages and disadvantages as far as the actual construction of the enclosure goes. Basically slotted ports are easier to fold in the enclosure. Pvc ports are more versatile to work with in irregular shaped enclosures.
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