I need some help, comparing results WinISD vs BassBox vs WinISD Pro, why ??? - Toyota Yaris Forums

talnlnky · 12-27-2008, 12:56 AM

yep.... funny how a single error on the T/S specs can really throw off your graphs.
Glad you got it figured out.

Seeing as you are playing with ID & focal i'd guess you are a bit on the SQ side of things.
Something that I had good results with when doing modeling was to make a ported box, tune it in the 28-33hz range, and make the box a tiny bit smaller than required to get a flat response. Basically, I tried to get the Ported box to rolloff near the same rate as a sealed box would.

The reason why I liked doing this is beacause...
1: group delay would be low due to the tuning being lower than normal (for car audio)

2: Doesn't give a boomy sound like many poorly tuned ported boxes have.

3: Sounds just like a sealed box setup, except it can play a bit lower, and is a bit more efficient.

The main problem is being able to fit the port in the box, a low tuning, and a small box don't mix.... especially if you have a high excursion woofer that needs a lot of port area.

Also... I noticed the Le (inductance) value on the Focal sub... If you like "tight" and "quick" sounding bass, in the future, look for a sub with a lower Le value... as the Le has to do with how quickly the Voice coil gets saturated by the magnetic flux....(how quick it can change directions). Try to find a sub below 2mH. Some subs even get below 1.

EDIT: Oh yeah... almost forgot... Say "Hi" to Hugo for me. :-)

12-27-2008, 12:56 AM	#4
talnlnky Audio Junky Drives: 08 liftback Join Date: Oct 2008 Location: Spokane, Wa Posts: 1,412	yep.... funny how a single error on the T/S specs can really throw off your graphs. Glad you got it figured out. Seeing as you are playing with ID & focal i'd guess you are a bit on the SQ side of things. Something that I had good results with when doing modeling was to make a ported box, tune it in the 28-33hz range, and make the box a tiny bit smaller than required to get a flat response. Basically, I tried to get the Ported box to rolloff near the same rate as a sealed box would. The reason why I liked doing this is beacause... 1: group delay would be low due to the tuning being lower than normal (for car audio) 2: Doesn't give a boomy sound like many poorly tuned ported boxes have. 3: Sounds just like a sealed box setup, except it can play a bit lower, and is a bit more efficient. The main problem is being able to fit the port in the box, a low tuning, and a small box don't mix.... especially if you have a high excursion woofer that needs a lot of port area. Also... I noticed the Le (inductance) value on the Focal sub... If you like "tight" and "quick" sounding bass, in the future, look for a sub with a lower Le value... as the Le has to do with how quickly the Voice coil gets saturated by the magnetic flux....(how quick it can change directions). Try to find a sub below 2mH. Some subs even get below 1. EDIT: Oh yeah... almost forgot... Say "Hi" to Hugo for me. :-) __________________