Soundqubed HDS215

[seedlings]

Is this a decent simulation calculator?

Loudspeaker enclosure calculating with Thiele Small parameter

If it is, then a vented box of 3.25 cubic feet will be maybe 3db louder from 20Hz to 40Hz than a sealed of the same size (Q of 1.068).

Basically should go sealed then..?

CHAD

Click to read more...

 

[Jeffdachef 5,000+ posts]

Use WINisd pro and modify enclosure specs. I know for a fact, those hds200s sound unimpressive as heck in a sealed both sound quality and loudness

 

[seedlings]

Use WINisd pro and modify enclosure specs. I know for a fact, those hds200s sound unimpressive as heck in a sealed both sound quality and loudness

WINisd errors out after entering TS param..

CHAD

 

[C1500martin 10+ year member]

i dont get what you are asking?

do you simply want verification if a ported will be louder? yes of course. in the region to which you tune it will peak but you lose bandwidth. sealed has more bandwidth but is not as loud.

 

[adulbrich 5,000+ posts]

IB has more bandwidth than sealed, but still not as loud as ported. Going back to ported after trying IB for the second time.

I've done sealed, IB, and ported. Ported is the best. If enclosure space is what you're wanting to save, then get a smaller sub.

 

[Jeffdachef 5,000+ posts]

WINisd errors out after entering TS param..
CHAD

you are entering it wrong

 

[seedlings]

you are entering it wrong

Well, I entered every parameter that soundqubed had. Double checked units and values, but I'll try again later.

i dont get what you are asking?
do you simply want verification if a ported will be louder? yes of course. in the region to which you tune it will peak but you lose bandwidth. sealed has more bandwidth but is not as loud.

I was expecting to see more than 2 to 3 db increase over sealed. Thats all. Which made me wonder if hassling with a port was even worth it.

CHAD

 

[Jeffdachef 5,000+ posts]

Well, I entered every parameter that soundqubed had. Double checked units and values, but I'll try again later.


I was expecting to see more than 2 to 3 db increase over sealed. Thats all. Which made me wonder if hassling with a port was even worth it.

CHAD

You have to hit tab on thebkeyboard after entering each value and let the program autocalculate values or else its not going to work. You also need to make sure the units of measurement matches exactly.

 

[poolman966554]

You have to hit tab on thebkeyboard after entering each value and let the program autocalculate values or else its not going to work. You also need to make sure the units of measurement matches exactly.

exactly what i was thinking. heres a quick example

 

[seedlings]

You have to hit tab on thebkeyboard after entering each value and let the program autocalculate values or else its not going to work. You also need to make sure the units of measurement matches exactly.

Trying right now.

CHAD

 

[seedlings]

I re-downloaded WINisd and this time the input box is much more simple. Anyway, it worked fine, and spit out the same info as the first post. Says 3dB improvement from roughly 30Hz to 60Hz. Also says a 4" port is in the green... for what that's worth.

Jeffdachef, when you compared sealed with ported, did any other variables change? Was box size the same for both?

CHAD

 

[Jeffdachef 5,000+ posts]

I re-downloaded WINisd and this time the input box is much more simple. Anyway, it worked fine, and spit out the same info as the first post. Says 3dB improvement from roughly 30Hz to 60Hz. Also says a 4" port is in the green... for what that's worth.
Jeffdachef, when you compared sealed with ported, did any other variables change? Was box size the same for both?

CHAD

It was a local craigslist guy with 1.5 cubic feet sealed for each hds212 he had 2 on kicker 1500. Was unimpressive and poor low end extension, most likely the reason why he was selling. An hds 210 in a T-line sounded more impressive than his 2 12s in a sealed. A few cities away there was a kid with an hds215 in a 4 cubic feet ported box tuned to 32hz and it was very musical and hits a lot more notes both high and low cleanly and was worlds louder than the 2 12s sealed.

 

[seedlings]

It was a local craigslist guy with 1.5 cubic feet sealed for each hds212 he had 2 on kicker 1500. Was unimpressive and poor low end extension, most likely the reason why he was selling. An hds 210 in a T-line sounded more impressive than his 2 12s in a sealed. A few cities away there was a kid with an hds215 in a 4 cubic feet ported box tuned to 32hz and it was very musical and hits a lot more notes both high and low cleanly and was worlds louder than the 2 12s sealed.

Alright then. I'll still try for the largest box I'm comfortable with, which could be near 4 cubes after port displacement.

So, here are some possibilities tuned 32Hz

4 cubes and 4" dia port flared

3.7 cubes and 6" port flared

Which would be better with 500 watts? The WINisd gives the 4" port a green rating.

CHAD

 

[Jeffdachef 5,000+ posts]

Alright then. I'll still try for the largest box I'm comfortable with, which could be near 4 cubes after port displacement.
So, here are some possibilities tuned 32Hz

4 cubes and 4" dia port

3.7 cubes and 6" port

Which would be better with 500 watts? The WINisd gives the 4" port agreement rating.

CHAD

You need to check the rear port velocity tab and make sure its under 100 ft per second. I dont see that happening with a 4"

 

[seedlings]

You need to check the rear port velocity tab and make sure its under 100 ft per second. I dont see that happening with a 4"

I don't have that tab. Under port, there's just diameter to adjust, and a port match number, which turns red when the port size is small enough. Maybe a different version?

CHAD