Question about a t-line and a high fs sub

[garychoffmann 10+ year member]

So I have a pair of skar vd-8's I want to play around with. They have an fs of 52hz. So simple quick math of 1130/52/4 equals 5.4ft long line roughly. From past experience that doesn't seem like I would get much low end from that scenario. So how dependent is the length on the fs of the sub? Will it still play well allthough it is "tuned" so high? Thanks guys.... That one just doesn't seem right.

Click to read more...

 

[Buck 5,000+ posts]

I would try it at 35 or so. There's no pressurization (virtually, if correct) at any frequency, so tuning should make a huge difference in the way the sub performs. So if tuned to 30 or 50 hz, the sub's movement wouldn't act much differently, it sure would sound way different though.

 

[garychoffmann 10+ year member]

Thanks buck. Kinda what I was thinking. I'll do roughly 9.5 feet at 100sq/in

 

[CSCStang]

Thanks buck. Kinda what I was thinking. I'll do roughly 9.5 feet at 100sq/in

Agreed on the 35 tuning. 100 seems quite large for 2 8's though. They are typically 31 sqin per.

 

[garychoffmann 10+ year member]

Agreed on the 35 tuning. 100 seems quite large for 2 8's though. They are typically 31 sqin per.

Yup... I just referenced a cone area chart to get the cone area... Said like 50.24 but from past experience an 8 is roughly 6.5

 

[CSCStang]

Yup... I just referenced a cone area chart to get the cone area... Said like 50.24 but from past experience an 8 is roughly 6.5

6.5/2=3.25x3.25x3.14= 33.16"

Sent from my SCH-I605 using Tapatalk

 

[Buck 5,000+ posts]

Do the Sd of the woofers combined.

 

[The_Dealer]

OP the SD is 30.66sqin, so 61.32sqin total. Go slightly smaller than sd if you can get the line area spot on Everyone is pretty spot on, but I'd actually go to 32hz-33hz for tuning. After about a year of use I pulled the t/s using my Dayton setup. Skar's listed parameters are way off in the first place, but the fs dropped a ton.

Here's the T-line I did for my zvx-8

Sent from my SM-G900A using Tapatalk