mrogowski

You owe me a case of beer from Paddock Wood now.

Ok, that depth should pretty much do it. (internal) dimensions - 23"W x 28"D x 72"H = 26.8 cubes Sub area = 24 cubes tuned to 18Hz Port size - 5" x 23" x 33" long = 2.2 cubes Add R8 fibreglass on 3 sides Here's things with 1000 watts of power: Excursion SPL Port velocity

Then you need 24 cubes (plus space for port) in order to achieve that. If you can get it, tune it to 18Hz.

Gotta go bigger then. 22 cubes + Trust me, that will have plenty of output for you. Remember, you're dealing with four 18's with room gain...

Ok, Based on the above dimensions, I would suggest the following: - 16.3 cubes gross - Port tuning to 21Hz - Port size is 4.5" x 23" x 38" long; port it at the top of the cabinet rear - Add R8 fibreglass to back and sides You're good to go. Now GIMME MY MONEY!

You haven't received my bill yet

The IXL-18 now comes in a dual 2 Ohm config, and I have LOTS of them.

SPL-15, IXL-10, IXL-12:

Alright, Aaron has pushed me to start looking into this... I would like to hear your input on what it is you would like to see in an 8" size. There are so many brands to chose from nowadays, from big-box companies to boutique 'internet-only' proprietorships. Some really good, some not so good. What is it about the 8" you purchased that made you decide to get it? Best, Mark

Based on your dimensions (23" x 17" x 72") you have about 16.3 cubes to work with per side. Does this sound about right? Give me a couple of days to determine the final TS parameters of the drivers and then we can do some modeling.

Based on your diagram, what are your dimensions for the sub boxes? What is your effective box volume?

Not yet. Put on the back-burner for awhile until I can come back to it...

Forgive me, I didn't read that part. Carry on...

Forget the MDF unless you plan to do some cabinet finishing. If its sheer cabinet strength you're after, go with ply - Fir or something else.

One down, one to go

Coil1 ---> Coil2 ---> Amp '+' ------> '+' ----> '+' '-' --------> '-' ----> '-'

Click on the bottom picture on the IXL-15 page - it shows the dimensions there.

You can try it, but on a personal note, I would go slightly bigger - say 2.5 cubes. Best, Mark

The baffle is done up along with the port. I will only add the one window brace you see here. Just waiting for the glue to dry before adding it.

Tomorrow I will work on bracing, port and baffle. I'll throw up more pictures tomorrow on the progress.

Phase 2 With the plywood sheets glued, its cutting and assembling time. What you see here is one half of the build. There will be two of these boxes that will slide into Dennis' van. The board leaning up against the box is the baffle. The box is tapered (difficult to see) - with the top is shallower than the bottom. A shot of the port hole. These cabinets will be tuned to 36Hz. You can see some of Dennis' IXL's in the background.

If it is volume you are after, you can use the same size box as per the recommendation but tune high - 36Hz or so. The recommended tuning of 28Hz is geared more for sound quality installs where folks wish to hear the sub through a majority of the passband with some augmentation by the port at lower frequencies. Best, Mark

And you call yourself an EE

True, scope out Sundown to see what they have.

I agree. I had a line on one that sounded quite smooth. Unfortunately, things fell through so I'm back at square one...