sundownz

Will be updating this as we move along building one of each. The copper coil is STANDARD on all new Z v.2 woofers -- it replaces the old 4-layer aluminum coil. Each one will be relatively fresh with ~5 minutes of break-in time playing low frequencies on our bench 1500D. Stock 2 Spider Suspension on each model with the standard 4-layer round wire biflair copper coils. Measured with Woofer Tester II unit ---------- 10" D2: RE: 3.93 ohms Fs: 44.8 Hz Qes: 0.37 Qms: 8.59 Qts: 0.35 Le: 3.65 mH Vas: 8.58 L BL: 27.14 NA Cms: 51.36 uM/N Mms: 245 g Sens: 85.04 dB ---------- 10" D1: RE: 2.29 ohms Fs: 44.95 Hz Qes: 0.33 Qms: 7.39 Qts: 0.31 Le: 2.57 mH Vas: 7.61 L BL: 23.19 NA Cms: 45.59 uM/N Mms: 274 g Sens: 85.04 dB ---------- 12" D2: RE: 3.97 ohms Fs: 36.13 Hz Qes: 0.36 Qms: 8.58 Qts: 0.35 Le: 3.86 mH Vas: 21.0 L BL: 27.13 NA Cms: 64.5 uM/N Mms: 300.8 g Sens: 86.14 dB ---------- 12" D1: RE: 2.30 ohms Fs: 33.71 Hz Qes: 0.31 Qms: 8.94 Qts: 0.30 Le: 2.75 mH Vas: 22.68 L BL: 22.41 N Cms: 69.62 uM/N Mms: 320 g Sens: 86.31 dB ---------- 15" D2: RE: 3.94 ohms Fs: 34.94 Hz Qes: 0.36 Qms: 8.72 Qts: 0.35 Le: 4.00 mH Vas: 57.18 L BL: 27.42 NA Cms: 64.95 uM/N Mms: 319 g Sens: 90.06 dB ---------- 15" D1: RE: 2.42 ohms Fs: 33.29 Hz Qes: 0.33 Qms: 8.43 Qts: 0.32 Le: 2.49 mH Vas: 57.96 L BL: 22.75 NA Cms: 65.84 uM/N Mms: 347 g Sens: 89.83 dB ---------- 18" D2: RE: 4.08 ohms Fs: 28.42 Hz Qes: 0.41 Qms: 9.14 Qts: 0.39 Le: 3.89 mH Vas: 139 L BL: 27.80 NA Cms: 71.56 uM/N Mms: 438 g Sens: 90.73 dB ---------- 18" D1: RE: 2.4 ohms Fs: 27.97 Hz Qes: 0.37 Qms: 9.00 Qts: 0.36 Le: 2.61 mH Vas: 134.97 L BL: 23.04 NA Cms: 69.20 uM/N Mms: 467 g Sens: 90.78 dB

dB-R can likely repair it.

You will need some kind of document to show original purchase date.

I should have the newer prototypes soon.

We've used some of the B&C units -- they compare pretty well, IMO. Andy @ Vex productions has been testing them for a while now -- and he has used alot more of this type driver than we have... and he was quite happy with them.

The cooling should be better -- it is well engineered, IMO. It may not function well with low levels of excursion, though. The engineer I spoke with indicated they test with a mix of 30 and 60 hz together so this would generate alot more movement. That's understandable. Hard for forced air cooling to work if no real movement. Much harder -- of course the SA does it well and even better with more movement.

160.3 at 30hz sealed on the dash. PROOF breaking a 160 behind c pillar at low freq's can be done. just not easy haha Good job Hank !

The cooling should be better -- it is well engineered, IMO. It may not function well with low levels of excursion, though. The engineer I spoke with indicated they test with a mix of 30 and 60 hz together so this would generate alot more movement.

The v.1 has been discontinued for some time. The v.2 just isn't up on the site yet.

Yes.

http://www.sundownaudio.com/ Now that it is live we'll be working to fill in much of the details missing from the old site regarding woofer specs. We decided to go ahead and take it live now to show the new photos of everything.

These are still available.

I am technically off on weekends so expect to see something on Monday.

They are not sold new with alum coils and I don't have any alum coils in stock for them at the moment.

No - we don't do custom color baskets. If you want something like that you could likely arrange with PSI / FMS to acquire a motor from us and go from there with his service.

Yes, D4 are sold out and some D2 remain. We have more on the way due in ~4 weeks or so.

E-mailed you back Bernard.

up When we have some time I'll work on other videos.

Ohhh the "magnet boot" -- new lines will start having them as we develop them. The Z v.3 will have one the X line also... E line... etc... when I got to Nightshade v.3 I will make one as well.

It's a random box we had laying around -- about 0.5 cubes I believe.

I am not changing the gasket -- I'm assuming most folks will get / make grilles to cover it anyway.

The 12-spoke is not an open tooling in 18" so we don't use it. Do you mean the former cap ? It's just a part I use on some custom build -- the SA line won't work with this cap.

Made for local customer -- thought it would be fun to use the Z v.3 spider on the NS v.2 -- we have about 44.5mm of motor clearance and this spider will allow you to reach it. Pretty impressive to see free air I also am experimenting with a former cap as he is running high power. The cap will enhance the effectiveness of our coil cooling setup. Once I get the dust cap glued I'll run specs -- it is still pretty fresh but I gave it a nice run free air before gluing on the former cap.

Until we make other sizes.

I suspect we were also reaching amplifier limits being wired to 8 ohm on one channel -- obviously as we get more units in stock in vehicles better examples can be given.