Quentin Jarrell

Save a few more bucks and go to Sears and get the largest physical sized MARINE platinum battery that will fit in your factory location. When you factor in shipping and any problems that might arise causing you to have to exchange a battery, and warrantee there batteries can't be beat. Just make sure it is a MARINE battery. It is there deep cycle batteries and they look exactly like the other platinum batteries however they have a "M" in their model numbers. And if they ask tell them the battery is going in a boat so they don't give you any shit about it being used in a "system"

Since the question came up I took a few moments to come up with a quick "what if" for a 8 inch sub or mid bass. Motor height is pretty much on spec however the cone and spiders are just guestimates. All spider, edge, and body components would be designed with FineCone. Total Od would be 8.5 inches. There are mounting flanges in the sketchup making it more than 8.5 however if I was to make a custom driver like this it would be a over sized Sd tabbed frame. This unit's motor was designed with a 2 inch 8 layer coil. The spiders would be inverted to make help make the suspension more linear. Xmax 15mm one way Xmech 24mm one way Sd (after subtracting motor area) 41 In^2 total driver height 65 mm mounting depth 50.5 mm

As much time that u have check and quadruple checked shipping quotes you could have already paid for that extra shipping.

Standing in the bottom of a 21 meter deep hold looking up at the deck house.

That is total working room with cone in its out most position. Not including box bottom thickness. Remove the motor from a standard 12 sub with a 12 spoke basket and that's what you will be working with.

If made correctly it should be the same. There is a reason why it's larger than copper.

Exactly. Just no outside motor structure around the coil.

The gap should not fluctuate anymore than a standard design does. The two neo magnets in the pics above and below the "gap plate" are magnetized at 90 degrees from the "gap plate". This should keep any modulation to a minimum. Faraday rings do help when used properly. But they can make a motor nonlinear as well. for example when a large pole cap is used without any use of rings in the motor. For cost and R&D purposes there will be a 5mm thick aluminum plate bolted to the bottom of the basket. The motor will then be epoxied onto this plate and secured with a center bolt into the bottom plate of the motor. The spider and body/edge will be fastened to the basket as normal. The coil and former will be inverted so as the coil will be above the body with little clearance as possible. The coil is large enough for the expected Pmax I don't foresee any thermal issues from the coil not being force cooled like normal. After a few production runs if there is enough demand I will have custom bodies built to transfer the coil under the body. However I would still expect it to remain without a dust cap due to the xmax. I like to keep the xmech 60% more than the xmax to prevent hard bottoming out. So if I went with a fully capped body it would add ~2" to the overall height to insure the cap didn't strike the top of the motor. As long as the manufacturing cost is reasonable it is possible to have a production run in 6-7 months as long as the factory doesn't drag their feet on the sample.

I've put a RF T1 12 ported under a seat of a chevy. And I've put (4) 12" JL W6's sealed in proper air space under the back seat of a 4 door dodge ram. It just takes a little ingenuity.

Don't need to. The coil is tiny in comparision to ordinary subs. 22mm versus 60-70 mm on subs with similar xmax. And the coil is not encased in steel as in traditional motors.

I spent the last 12 hours or so tweaking the current motor to get the most stoke as possible while retaining enough motor force for the moving mass. I want to stay at 120 mm in total length this will keep the motor under the working depth of a 12inch 12 spoked basket with a traditional cone/surround. in the above pics the colors are: copper is the coil middle silver is the gap plate dark gray is Neo magnet outside silver are top and bottom plates Imagine this sitting inside a basket just as a pole piece would. In this case the pole piece is the entire motor. No other surrounding magnets or plates are required except for a thin aluminum plate which will attach the motor to the frame. calculating the B field which is a total of ~70mm we can expect a xmax per 70% BL at ~30.6 mm one way. A 12inch basket using this motor, this driver should work in 5.25 inches of total depth (not including enclosure rear material thickness). Meaning the cone should not hit as long as you have 5.25 inches of clearance between the inside of the bottom of your box and the bottom of a rear truck seat.

If you want to save yourself some cash return the resin and mat. It's not needed. If your cuts are nice and straight all you need to do is run a small bead of wood glue on the inside of the seams. If not then run a small bead of caulk.

not for this motor. It's too tall about ,4.75 inches, to be a reasonable shallow driver. There are less expensive routes to go for 8''s

makes sense didnt think of the junk in the trunk

volume for sealed enclosures are just as important for ported enclosure

that port will be too close to the bach hatch

Because of it's strength Neo's flux naturally wants to turn back onto itself. It is actually less reluctant for neo to jump back through the air rather than traveling through a back plate then pole then top plate like in a traditional motor. This is why the typical way neo is used by a number of so called extremely strong Neo motors is extremely lossy. If you look at other designs like the Critical Mass UL or the B-Hive that Thilo Stomplers uses they have the capability to be just as strong if not stronger using much much less Neo. The below pic will better help understand the gap that the coil travels through. In the center you can see the flux field is pointed out showed by the arrow. They then turn back into the top and bottom portion of the motor in the opposite direction, again showed by the arrows, creating the motor breaking. I'm not a IB guy and honestly don't know much about it, however a 12 inch model could look like this. Re 2.05 Fo 29.7 qts .7 qes .778 qms 7 vas 60 liters bl 8.9 xmax 25mm spl 84.97 @ 1w That should result in an F3 @ 30 hertz with a Qtc of .7 Again I don't know much about IB but I could easily change parameters to meet the needs of the customer. I'd assume with nearly twice the xmax of the SI (although this sub would be deeper, limited by basket depth) It should produce pretty decent output.

Above is the magnetic field that the coil travels through. At around 27mm of travel each way the ends of the coil hits a point (zero on the graph) where the flux field reverses and this magnetic reversal continues to increase to become the equilvilant opposite of the original BL. This is effectively a motor break that is as strong as the drivers motor force.

Because I work in the Maritime industry I claim a per diem also. It's 87 bucks a day in my area.

Spent a little time today on a possible 10" and 12" driver for the folks with limited mounting depth. Any possibility of building this driver will depend on the cost of manufacturing. It would use a 8 layer alluminum coil. Be around 600 watts rms. And has motor breaking on both the outward and inward stroke. By looking at the model you can see the motor does not have any outter assembly. No outside top plate or magnets. It uses the flux path of the inner neo magnets alone to create the flux gap that the coils rides in. This use of the magnets also creates the motor breaking. This allows me to put the entire motor inside the basket and attach the spider to the bottom of the coil. Xmax on this sub should be ~23mm one way. Mounting depth is limited to a 12 spoke 10'' and 12'' frame plus about 5mm.

I claimed almost 80 thousand miles on my taxes this past year.

The pup's massive magnetic force must have disrupted the postal worker's pacemaker and delayed shipment

Thanks everyone we are super excited. We are both 28 and have been together for 12 years so I guess it's about time. Now I just have to sell a few subs so we can afford some diapers.

good sign. It means high grade steel

Oh, that's illegal in most leagues. We always had a seamstress custom fit our equipment. It's impossible to get a suit or shirt to fit right from the factory Yeah, extra cloth or material to change the way it fits.