April 28, 201312 yr Too technical?Why, because they know how to do basic math? (finding the surface area of a circle.)Or because he suggested using the sd which is making your life even simpler because you just have to multiply it by the amount of drivers you have.
April 28, 201312 yr My explanation was VERY simple, although not technically correct. You guys can argue about math all you want but still four 8's have more cone area than two tens no matter what end of story. You guys are just math nerds.
April 28, 201312 yr My explanation was VERY simple, although not technically correct. You guys can argue about math all you want but still four 8's have more cone area than two tens no matter what end of story. You guys are just math nerds. Your explanation was useless, it only works in this scenario.As Shizzon has said, 2 10's with your explanation should have more cone area then 1 18, eventhough that is far from the truth.I don't understand what you get out of calling people math nerds.Some very good advice for you would be to stop typing, untill you know how to talk to people. (it's not because this is the internet that you shouldn't behave properly.)
April 28, 201312 yr That is not how how SD is calculated. ALL formulas for loudspeakers are formulated using Thiele and Small's work. Their definition of effective piston area is radius (1/2 of driver diameter surround apex to surround apex) squared times PI. And VD is effective piston area times xmax. Xmax is NOT @ 70% BL as most manufactures list. The definition for xmax used in formulas is coil overhang.
April 30, 201312 yr Maths nerds because they know how to calculate cone areas ? smh.....To the OP : maybe you need to find another box builder,
April 30, 201312 yr Can't forget about BL... The magnet(s) can't be dead or you could have a 40" sub maxing out at 0 db. You need motor force, which is why when you buy a sub you are basically buying the motor (magnets) and if you don't like something about the rest of the sub just change the soft parts.And to the op... 4 8's has more sd Edited April 30, 201312 yr by Fi 4 life
April 30, 201312 yr Author Maths nerds because they know how to calculate cone areas ? smh.....To the OP : maybe you need to find another box builder,its hard to find i good builder for trucks so im almost limited to the four 8's with the custom enclosure or two ported 10's in a prefab..sucks right? lol
May 1, 201312 yr Maths nerds because they know how to calculate cone areas ? smh.....To the OP : maybe you need to find another box builder,its hard to find i good builder for trucks so im almost limited to the four 8's with the custom enclosure or two ported 10's in a prefab..sucks right? lol I don't understand why you keep isolating for certain applications for a job that it should already be entitled to? If a guy is a box builder, he isn't a box builder for only Fords, or for only trunk vehicles? lol. Its simple measurements the person is following, not the vehicle type.
May 1, 201312 yr Author all the builders that I contacted told me the exact same thing. truck boxes take more time to design than regular boxes
May 1, 201312 yr Either one of two things is happening. 1) You live in Pennsyltuckey so everyone you speak to is from West Virginia2) Or you aren't being very clear in what you are asking. Just like making a good thread, having a productive conversation with a builder is necessary.
May 3, 201312 yr Author everyone voted for the 8's with that being said would they be worth the price with such a small advantage in cone area?
May 3, 201312 yr First off, everyone did NOT vote for 8's. Second, build your box first! Price/performance is not something anyone else can really answer for you
May 3, 201312 yr Author i thought cone area and excursion was the key to maximum output....if i go with the four 8's it will sundown sa 8v2's and the dual 10 option would be dc lvl 4,FI Bl or ssa icon
May 3, 201312 yr i thought cone area and excursion was the key to maximum output....if i go with the four 8's it will sundown sa 8v2's and the dual 10 option would be dc lvl 4,FI Bl or ssa icon. Depending on enclosure volume and tuning. And power being applied. This has been gone over already and I have posted results of two eights compared to one 12 using the same power. You can not look at a few specs and make assumptions about output.
May 3, 201312 yr i thought cone area and excursion was the key to maximum output.... You would need to determine Vd in that enclosure volume with the applied power to determine which would ultimately have more output and over what bandwidth, as alignment is going to matter in regards to output as well.
May 4, 201312 yr Author i thought cone area and excursion was the key to maximum output.... > You would need to determine Vd in that enclosure volume with the applied power to determine which would ultimately have more output and over what bandwidth, as alignment is going to matter in regards to output as well. how can i do that?
May 4, 201312 yr download winISD. You can input both drivers you want to use and compare both set ups
May 4, 201312 yr Author i think i did it right...i entered both driver and put the box tuning freq. to 32 the two dc lvl 4 are in red and the four sa8's are green
May 4, 201312 yr Now, adjust the box volumes to what will fit under your seat. And under the plot menu input whatever power you will be running to each set up
May 4, 201312 yr yea above tuning input total volume. Then to the right click plot and enter total power that will be used
May 4, 201312 yr here I helped you out a bit. All enclosures are 1.5 cubic feet and power is 2,000 watts. (another 500 watts will just give all a little more gain) It's pretty obvious which route to go.
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