Quentin Jarrell

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That will be posted soon. Typical stuff, motor falling apart, sagging suspension, ect. Coils will NOT be covered, nor acts of god, cosmetic changes, vandalism, screw driver through the surround, ect. Stipulation for 3 year warranty will be a filed warranty card of original owner and recones and or basket size changes must be done by DSS to maintain warranty.

Just in time for my play money! I'm going to be pushing to get them ready for the middle of income tax time. I'll have enough baskets and soft parts left over from the Ethos production so the only thing I'll have to have made will be the motors.

~6 months

I had a sample of this driver sent along with the Ethos production run. I don't have pics of the actual motor yet. When Nick slows down a bit he will send some to me with some group shots off all the motors I had made. This driver offers 22.5mm xmax per overhang method. It will be ~27mm per the typical 70% BL rating. The entire stoke of the coil is covered in aluminum faraday rings. All the way from the bottom plate up to about 20mm above the top plate. As long as prices stay the same I plan on releasing the Beta version which uses open tooled soft parts for $375 shipped for the 12 inch. RMS rating should be in the 1,000 watt range and enclosure recommendations will be small with a very low roll off, around 25 hertz with a flat response curve. Below is a drawing of the motor, may have some actual pics next week. Below is the coil. It is a pure copper 8 layer dual one ohm coil with 22.5mm winding width. Induction will be very low on this motor. pic of the Primo coil next to the Ethos coil.

The sticker will be brushed aluminum stock with blue printing.

The test box I sent Pat for my 15 was built from the 5 or 7 ply hardwood stuff from home depot. Their "birch" plywood. It was 39 x 20 x 20 with a triple layer baffle and weighed 91 pounds at FedEx

I will be offering a three year warranty on DSS drivers and I need a way to track them so a sticker with a serial number will be placed in the rebate on the rear of the motors to hide the tool mark from being turned on the lathe. The below logos are what I have been working on (be gentle it's my first time using Corel). Which one do y'all prefer? The blue will be a royal blue and the white will be brushed aluminum.

He said he won't last long. Not that he won't last long in the business.

http://www.amazon.com/gp/aw/d/B004T0YAMG/ref=mp_s_a_1_1?qid=1375961186&sr=8-1π=SL75

You would see a hump in response around tuning.

You ain't fer enough south either. We can actually grow that stuff ourselves round here.

Speaking of bearings. I dropped off the company vehicle a 2010 Ranger for service and it needed new pinion boots, rear axle seals were leaking which were both under watrentee. Front hubs were loose (truck had slight vibration even when new). They recommend repacking bearings and tightening, why in the world would you not spend an extra 60 bucks and just change both bearings while you got the hub apart?

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Daily coil will be no problem. Still a beefy ~3,000 watt rms coil, but still big hump in response due to BL. MFF on daily coil is in the 400 range, still really too high for a "musical" sub but still capable of playing music. The SPL coil will pose some problems: 1. motor force WAY WAY beyond musical levels. I highly doubt it'll sound decent at all due to response on paper. But there has never been a motor this strong built that I or any of my suppliers are aware of so it'll just have to be built to find out. 2. Again motor force, it has twice the motor force of a IA warden which actually has more force than the DDZ. Very small amounts of power will excite the coil, sensitivity with 10 hard spiders which is equivalent to 3,650 grams at one mm, or taking 9 pounds of weight to move the coil one mm, is around 102 DB at one watt one meter. This much force will more than likely rip the spiders from the coil and frame and might crush the cone. I am working on custom triple rings and other stuff along with a better glue than CA to assemble them. 3. The weight of the motor. It weighs 96 pounds. Serious stress will be created on the basket so this will have to be looked at. On the other hand theoretically due to the incredibly high motor force and sensitivity it would be possible to run a "normal" spider pack and run small amounts of power to achieve xmax. For example you could run 1,000 watts to the sub and it would be just as loud as a sub that is rated for 2 or 3 thousand watts. Think of it as a cheater sub. Now this is just based on physics and may not work. But if you take a speaker with a sensitivity of 102 and compare it to a speaker with a sensitivity of 87 then the higher sensitivity speaker should be louder on the same power.

If a viable option as a production driver it would run ~$800 shipped

The daily coil on this motor is 45mm one way linear. The the two gaps in sync including the stray flux fields is 90mm. In a watered down explaination of this motor is basically a motor with a 90mm thick top plate (that has even saturation, impossible normal large top plate designs) with a 50mm winding width underhung coil

<p>you'll be fine with whatever you use. as long as you have decent bracing to minimize flexing the vehicle environment will hide any issues that would be due to wood density. The noise floor is very high in a vehicle. i have test boxes built from floor substrate (3/4 pine) and there is not ant audible differences from the 13 plt birch boxes I have. </p>

It is physically impossible. Plywood is a laminant. The center ply could have a void the size of a dinner plate and you would never know until you cut it into.

If they have it get the stuff with the oak vaneer. It's a bit sturdier vaneer.

Go on parts express and look at the clearance stuff

I have used the stuff from Home Depot with no problems however it is not birch. It is a cheaper hardwood with a birch vaneer.

I am no way a SPL guy I have ZERO experience competing so I will be looking for seasoned competitors to do testing to see if it is a viable option. To give a few comparisons as far as motor strength the two big neo's out there, the DDZ has a BL of ~35 and the IA warden is a bit stronger. The typical sensitivity on a average sub is in the upper 80's DB at 1 watt 1 meter. The Magnetar with SPL coil with 10 hard spiders would have a sensitivity of ~102. Couple that with the massive amount of power it could handle it could have the ability to get pretty loud in knowledgeable hands.

Not a good pic but all I have at the moment. 270mm OD with two 1 inch thick magnets. Two 1 inch thick top plates.

13 ply baltic birch is only about 12 pounds lighter per sheet than MDF