n8skow

resurrecting old thread for a quick heads-up... the day has finally come... spoke with Kicker earlier today - soloX's no longer available. Everything they had on hand has been destroyed =(

At the end of all that math - what is the desirable range for vent mach?

But since we can't see the formula that particular online calculator is using - we don't know how they are coming up with their 'ideal' port area - (and it doesn't specify if they are using an end correction factor for flared ports or not...) Let alone the results... According to that calculator - you'd need one 7" round port for the single SSA-12 (to tune to say 35hz). I'm gonna go out on a limb and say thats way too big to be practical. If I used SSA's recommend a 2.25 cube box the port would have to be 28" long! The links to SSA's box plans are broken at the moment, so can't compare against what they recommend for port - but I'd wager it's a lot less than this calculator is coming up with... Thoughts? the "generally accepted rule" is bs, it depends on the driver used. It depends heavily on the amount of air the driver displaces. Minimum port area can be calculated using the Sd and Xmax parameters of the driver along with the number of ports used. Let me draw some stuff out for you. Ive seen several formulas, using vent velocity and such Just posted a general statement regarding displacement

Okay, so let's use a single SSA Icon 12... (Sd=480 cm^2, Xmax=22mm) and decide to use a single port... How do you calculate how much port area you would need? the "generally accepted rule" is bs, it depends on the driver used. It depends heavily on the amount of air the driver displaces. Minimum port area can be calculated using the Sd and Xmax parameters of the driver along with the number of ports used.

I think you've mistaken 'generally accepted' for 'universal'. At any rate - care to enlighten us? How do 'you' determine how much port for a given woofer? I'm all ears... the "generally accepted rule" is bs, it depends on the driver used.

4.2 before or after displacement? I believe the generally accepted ratio is 12"-16" of port area per cubic foot of box... You currently have 6.72" of port per cube - about half what you probably should (if that 4.2 is after displacement)...

direct bolt-ons? adjustable ride height?

doing a big Celica install myself.... can you tell me what you did for suspension there?

Pretty slick. How's it sound?

1. What kind of cloth you using there? 2. How will you transition the fiberglass addition into the existing door panel? Air tight?

Concerning bandpass, the variable is between the passband and gain, your box 'can' have a larger passband if it's designed with less gain (the S factor). This is determined by the volume of your ported side.