sundownz

Ran some specs on this one too : Re : 3.82 ohms Fs : 25.32 Hz Qes : 0.37 Qms : 5.31 Qts : 0.35 Le : 4.28 mH Vas : 64.03 L BL : 27.56 NA Mms : 466 g Cms : 84 uM/N Sens : 86.19 dB BL^2/RE : 198.68 Box Models : 3 cubes @ 30 Hz ported = F3 of 25 Hz fairly flat 4 cubes @ 35 Hz = F3 of 28 Hz / peak of ~5 dB around tuning 2 cubes sealed = F3 of 50 Hz / Qtc = 0.530 I may try one of these puppies sealed in my ride Of course all subject to final production spec -- but this shouldn't be too far off by the time we use the stock black spider and stiffer surround.

We have an Sd reduction of about 10% on the 12s and 15s -- no SD reduction at all on the 10 (it's slightly over-sized) -- 10% SD is ~0.3dB compared to increasing the displacement limits by enough to equal about 1.5 to 2 dB and also all but eliminating suspension component and glue joint failures, reducing distortion dramatically, etc. It doesn't take a speaker designer to guess which one most folks will prefer; especially in the age of low priced / high power amplifiers. The real truth is that there are almost NO surrounds out there today that can handle truly HIGH excursion beyond the mid to high 30s range reliably -- none of the lauded "high rolls" can do it when one does the math on their rolls. It may take a while for folks to adjust to it but I am willing to bet you'll see many others following suit. So all with good reason

The 257mm spiders showed up this morning so I assembled the 15" version today. I should be able to test it tomorrow at some point. See photos below : *257mm spider tool

All of the photos in this thread were taken at our shop.

I am always working on new stuff. I have been working on many possible SA series (10/12/15) v.2 revisions for a few years -- so far I haven't been pleased enough with anything across the board to make a new version yet; either the performance gain was too one-sided to SPL *or* low-end and/or the modifications cost too much. I do have another whole set of prototypes coming in soon... but even if I approved them right now and started production it wouldn't be any sooner than March to have them in stock. So that would put any potential SA v.2 into the 2Q of next year (April to June) at the earliest assuming I approve the new prototypes.

Often you will find x-max figures listed as two-way figures; we only list one-way -- It's also a legit 70% BL figure (industry standard 10% THD figure) and not a made-up method of calculating x-max as is pretty common on entry level products.

Pre-Order was $155 -- regular is $199

I expect prototype pics of the 12" model any time now. It was waiting on our newly tooled terminal blocks to be assembled.

We run them until shortly before arrival.

We got a bunch shipped so far. We are still here @ the shop doing QC on them before shipping So far QC is fantastic and we are very pleased.

Big chunk of these are reserved to go out to international accounts; so if you'd like to get in on the first run act as soon as you can

We do not have any adapter plates available; they are a standard size mid, though, so other available units may work.

Suspension capacity is identical on the X as the Z v.4 (same surround and same spider tool; just softer) -- coil will be a bit shorter, though, so that will limit it a bit.

Just unloaded them after lunch; we'll start shipping pre-orders tomorrow. I am really pleased with how they turned out. I wanted to see them before starting more production -- and we sold about 75% of what we got -- so there will be a period of out-of-stock on them; but we should have steady stock starting after the 2nd run !

We got them in. I'll get up some pics soon and should start shipping tomorrow.

Each cone size surround varies based on the spider capacity -- so that we aren't using a surround that is unnecessarily big. 10 = 42 x 42 12 = 46 x 46 15 / 18 = 50 x 50 When we tool our 18" frame it will get it's own surround as well; in the mean-time out tooled 15" and the 6-spoke with adapter both use the same spider.

The X-12 based on the new frame prototype is nearly done, actually. We may see it within a week or so.

Due to the Holiday delay we expect these Monday to Tuesday.

Standard grilles from Parts Express should work on the 8/10 -- last I checked they did assuming they haven't changed the tooling

Yes, the frame / surround platform is for the X, Z, and NS lines.

Despite the damaged coil I was able to pull specs then estimate where they would rest with a fully functional coil (as I have data from the 10" model to fill in the blanks that are not size dependent) -- 12" D1 model. Re : 1.65 series Fs : ~25.75 Hz Qes : ~0.296 Qms : ~4.16 Qts : ~0.276 Le : ~1.8 mH Sd : 457 cm^2 BL : ~17.23 Mms : 329 g Cms : 115 uM/N Sens : ~85.01 dB BL^2/ RE : ~180 (D1 coils are usually a hair higher than D2; but for estimation purposes I used the same as the D2 coil) So these are estimated based on the known specs and specs from the 10" D2 -- gives us a good idea. As I mentioned in the 10" thread I may need to add more stiffness into the surround to get the specs to lay where I want them -- realistically I'd like to see the Fs into the low to mid 30s on the stock format driver. You will note that the CMS is higher than the 10" model as the spiders and surrounds get a bit softer as their size increases; thus we have an even LOWER Q figure on a 12" than we do on a 10" model -- on the Z v.3 the surrounds compensated by also getting stiffer as size increased (the 18" Z v.3surround is very stiff) -- so I'll have to do the same on the new surrounds. So more testing will be getting done with some surround tweaks

I may put a bit more stiffness into the surrounds as well -- and for the low FS junkies I'll still be able to put on a spider from the "X" line which is one layer fewer than a "Z" line spider. This way the FS won't change so drastically in "stock" format but we can still tailor it in either direction (it would still be lower than the v.3 models, of course, just not such a HUGE change).

Got the 10" Z v.4 motor charged up to run specs on it -- so here we are (D2 coil) : RE : 3.42 (series) Fs : 29.4 Hz Qes : 0.324 Qms : 4.61 Qts : 0.302 Le : 3.68 mH Sd : 366 cm^2 BL : 24.85 NA Mms : 316 g Cms : 92.41 uM/N Sens : 83.16 dB - 1w/1m BL^2/RE : 180.56 For production the top plate ID is going to move OUT a bit (wider gap) to prevent damage in the case of excessive excursion (which is how I damaged the 12" prototype) -- this will reduce BL by a small margin but the Z v.4 motor force factor is still in excess of the v.3 version so it's a non-issue All in all I think these specs are on target with what customers want -- compared to the v.3 we have : 1) Lower FS in stock format 2) Higher motor force 3) Higher thermal power handling (v.3 10/12 use a shorter coil than 15/18 -- v.4 use the same 15/18 coil in all sizes) 4) Higher mechanical power handling and thus more forgiveness of larger boxes (current 10s are very picky on small boxes) So I think folks will be extremely pleased when these hit the market.

The SAE series amps (1200D models specifically) had different cords and knobs.