sundownz

We will have them in stock - at least for a little while... I do expect them to sell out again before the next run gets here. We are trying to make them faster and faster but demand keeps outpacing us. Each subwoofer will come with one from all new production runs -- starting with these 8s and 12s. I have quite a few 10s in stock still that don't have them -- they *cannot* be added to older subs as we had to make the outside of the top plate a LITTLE smaller in diameter to make the boot lock on.

Little surprise too... new magnet boots tooled as well for those that may want to inverse mount them and have a bit nicer look :

I'd wager some of those guys are just saying they are on the Team and really are not.

The power ratings will be met with 12.8v supply.

Less mechanical power handling -- but it will sound just fine.

Expected output is ~440 x 4 @ 1 ohm

None of our AB amps run on 18v. I'd suggest 200-250 amps fusing... maybe 300 @ 1 ohm each channel.

Yes.

No.

Some initial testing done -- very very similar to the v.1 SAZ-1500D model. I think we can squeeze a bit more out of it before production so I'll get some revisions done and then post some real numbers up

This is the prototype - ETA not set for production units.

All designs have their advantages and draw-backs which include but are not limited to the depth of the driver. Over-hung and split-coil designs tend to be the deepest designs -- so aren't as well suited for super shallow drivers. Under-hung can be quite shallow as you don't need alot of clearance behind the gap for the coil as BL drops off so fast afterward and the coils are short. XBL^2 tends to have the highest excursion to depth ratio possible -- I am not aware of a way to create more x-max with less depth.

I don't have the tools to show the graphs but you can also do "split coil" which results in a graph alot like XBL^2 but with alot bigger coil and more thermal power handling. You actually have two separate coil windings on the former. This has been utilized in several car audio drivers as well.

Most car audio woofers utilize over-hung for the simple fact that the coils are longer and typically handle much more abuse for that reason. A good overhung driver can also sound quite good despite have a higher THD than a flatter BL design. Many even prefer the sound generated by a driver with a parabolic BL curve as the parameter shift over excursion makes the sound "punchier" as excursion increases and the BL drops off, Qts rises, and your box gets a bigger peak in response which is often interpreted as "punch" Objectively, though, a well designed under-hung or XBL woofer (or any woofer with BL flattening tricks) will have lower distortion and is more accurate to the source... a drop off of 30% of the BL typically equates to 10% THD so we at Sundown and many other companies list x-max as the 70% BL point.

Yep... you read that right. Hank is doing 48x SA-10s. ----- Hank is now in NC with us -- the above was done up in Indiana at his home. Subs all tested and laid out for installation :

Cardboard box trick *laughs*

Dual purpose video - we floated this bag all over the port AND did a hair trick with all the doors closed. This truck is BRUTAL... still at 17v at the end of the video, it's very efficient.

Little bit of external vehicle flex action.

Burp - was a bit louder with 156.7 dB ----- Clamping power: 910 watts per amp x 12 = 10,920 watts for 156+ dB @ 30 Hz. We calculated impedance rise to be 3.5 ohms -- also currently we are using 18 Y-Splitters to get the signal to the amps so RCA voltage is really low (line driver not working right now). Hank plans to do more testing with a line driver soon when it gets fixed.

We got the batteries up to 17.8 volts and got sick of waiting so we did a sweep : Peaks at 30 Hz !

Batteries are charging and we will do some metering once they are full. We don't expect optimum results as there are 18 sets of Y-Splitters involved -- bet the head unit is hating life Once Hank gets home he is going to use a Maxx-Link at least for a while until he figures out whats wrong with his line driver unit.

Yep - a Ford F350 Diesel crew cab with a camper shell.

We are going to try metering if the cops don't show up Keep in mind the truck can still haul six passengers so there is a big ol' cabin.

Second video. Kind of short - the beats at the start of the song are likely in the 20s... dome light was moving 10x more than the subs.

First video.