sundownz
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Posts posted by sundownz
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By standard "AWG" definition it is a 4-AWG terminal -- but with thick, fine stranded, car audio wire it will accept 8 AWG.
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The SCV amps are replacing the SAZ amps -- 99% of our customers did not take advatange of the 16v+ stability the SAZ line offered. Therefore; they were paying for something they weren't benefitting from. All SCV amps produce more wattage at 12v per dollar and per square inch than their SAZ counterpart.
The NS series will remain 19v capable.-
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You can order a custom driver from a dealer if they want to process the order manually -- we've had several orders come in via EMF Audio for customized drivers.
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It would certainly be possible to do that, yes.
Actually the SA-8 v.2 was our first driver to feature a more linear than typical suspension; it exhibits alot of the same behaviors as the New Platform drivers.
If you listen to it back to back vs. the X-8 it would be apparant
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Our 10/12/15 frames have the standard 127mm pattern.
The 18" frame has a bigger pattern (proprietary to us) and an adapter for the 127mm pattern.
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Bumping this up since the "SPL" -- now referred to as "Standard" Roll -- surrounds are all in stock.
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Nice!
When is the new sd-8 coming out?
I concentrated most on the SD-3 10" model; which is now complete and about to start production.
I will likely do the 12" next; then the 8" last since it is changing the least in it's revision to SD-3
I don't have an ETA for it yet, though, as I still need to go through all of the development and tooling.
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I measured a production v.2 and a newly re-built v.3 with the final compliance side-to-side with the same amount of play time (neither is fully broken-in). Just to compare... looks like we nailed the stiffness based on FS... and we see a drop in Qts due to the higher BL (also higher sensitivity) :
BL^2/RE = 70.17
BL^2/RE = 85.78
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I don't trust the Woofer Tester as an "end all be all" of spec measurement either so don't read too far into it... but comparing on the same day back-to-back I can tell if my design goals are being met
The spec on our web-site for the SA-8 v.2 was done with a Klippel machine after full break-in for reference.
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Air leaks can make some pretty bad sounds; that don't sound like air leaks at all -- can sound like bottoming out and all sorts of stuff.
I would tighten the screws down fully by hand (don't go crazy with a drill) -- and listen again.
Assuming you hear some mechanical sounds at ~3.5-4" p-p that would be expected a bit.
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Well -- these are our tooled parts.
We do sell them to a handful of custom re-builders which could do other brand drivers.
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Sorry for the noob question but does the mega roll take away cone area? It looks like it has less area but it may just be because the surround is so huge! Thanks
A little -- about 10% compared to a very average surround like a Z v.3 series.
This translates to about 0.3dB -- which if you are utilizing even a small amount of the additional stroke allowed by the surround is moot.
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Built up an X-10 with the Standard Roll "SPL" style surround and did a quick video today. Fs is increased to ~46 Hz compared to ~28 Hz stock -- this is similar to the Z v.3 series 12s.
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There has been a bit of a hole in the market since the old XXX has been gone for so long.
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While it is not the "JF Signature" model... it will honestly do just as well in terms of objectively low distortion.
It may not be as much of a SEALED box driver in terms of low F3 -- but all non-linear specs are as good or better than what I was working on with the JF Signature.
I decided to hold off on the Signature until I can complete some other, even better, ideas and parts.
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Haha; well I am still in the early stages... just got the first prototype motor on Friday.
It is a linear BL design -- yes. Also... it uses a 4" coil -- motor is 250mm diameter so it has the beef.
I have no ETA on it for you yet.
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The tooling itself is not done in-house -- the frame is our (patent pending) design, though
IMO... things like 12" spiders WILL become more readily available in the future... but possibly more-so in home audio. Either way I'm ready to use it to the fullest for Sundown at the last whether everyone else does the same or not!
It may take a while, of course... the Ti frames were tooled ~15 years ago and it took basically until I tooled my frames to get something else any better in terms of clearances and strength. Now you'll see some other guys that, like myself, actually want to push the envelope doing their own frames... B2 just did a 15" frame, DC did an 8" and 15" frame, and Incriminator is working on frames too. The future of big powered subs is pretty promising once you leave behind 8" spiders and standard frames on those models (obviously theose parts are still perfect for units that aren't top of the line).
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sometimes shit happens. its nice that a company takes their cs serious.
YES -- it does indeed happen. So for those times when it does -- we do our best to take care of it.
We send out 1000s of speakers that are 100% perfect -- one thing I have learned in the business is that silence means everyone is happy
So you'll hear the most about the few that didn't go perfectly. That is normal, of course, in any business.The crew & I have been working every day to increase production reliability of our products -- it's been a huge learning curve with the new platform. The Mega-Roll is extremely tricky to work with by comparison to older surrounds.
In fact... I have been developing a Mega-Roll v.2 primarily for the purpose of increased assembly reliability. We aren't just sitting around passively by any means -- the crew works every day to improve assembly quality and reliability. Every driver that isn't perfect is looked over and learned from.
Bottom line, though, doesn't matter how good you are; how many speakers you build; or how much you check it; stuff happens. At that point it comes down to service. We do our best in that regard and I feel most people are very happy.
This particular case is one of those "one in a million" scenarios -- but I am glad we were able to resolve it in the end.
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The B2 unit is pretty silly -- interested to see more about it
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For whoever mounts these in a wall, R.I.P. lol
Haha -- yes... I do feel a little sympathy for anyone mouting them firing forward.
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ya....these need to go in the van asap
Indeed !
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SOmebody trying to stir the pot already LOL
Haha, yah, I guess -- I don't think it looks at all like the DC frame... I saw the 15" DC frame in person in China too.
I mean they are both high clearance frames with thick legs -- but otherwise... I don't think so similar.
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looks like the normal spoke basket with less larger spokes. Sorta kinda like the dc baskets.
I'm not a cosmetics guy -- the appearance is really secondary to me to doing what I want.
That being said it's most reminiscent of, say, an 18" 6-spoke -- but more rounded, bigger landings, much thicker, taller, etc. I'm not the kind of guy to put flames on it or any un-necessary cosmetic touches. It's big, it's strong, it works. To me -- being a beautiful piece of equipment follows naturally with it's working well.
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I've mentioned it in a few places... but back when I was in college with much less knowledge I was dreaming about a driver with 6" of p-p travel. At the time not fully knowing or understanding that sort of massive undertaking it would be financially and parts wise to be able to make such a driver.
So now... after 8 years in the business I have finally tooled the biggest part of the puzzle to making it possible.
Suspension and motor are both things I can definitely figure out -- but having a frame to allow it is huge.
Obviously it cannot happen overnight but I will be working towards making that very special 18" driver with unheard of throw. Obviously as a company I need to address things that sell the best first -- but I am getting close to the dream.
Iit's this type of thing that keeps me excited about speakers every day. It's more than a business for me -- I love to push the envelope because this is what *I* wanted when I was simply on the consumer side... the new platform stuff shows it already, I believe... not everyone agrees or likes them (at least in the original Mega-Roll format) but I don't think anyone can dismiss the impact of the X, Z v.4, etc on the industry.
I know some people think I'm crazy for the sheer # of parts I tool and keep in stock (which grows every year) -- but it's just how I roll... I want to be able to make something that anyone can enjoy no matter what they like.-
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Anything in particular you need to know ?
The jist of it... STRONG frame to hold heavy motors (it is ~10 lbs or so of aluminum); giant clearance of 6" p-p; holds spiders of 10, 11, and 12" diameter (I typed that wrong in the first thred... 10" is the smallest landing rather than 9.25"); will accept a 5" coil in the base; has a proprieteary 8-bolt pattern (which will get it's own vent ring that I am tooling) as well as cast adapter for standard 6-bolt 127mm adapter (that mates to the current vent ring); and it looks sweet.
In order to use it to it's fullest... I need to tool 12" spiders, another surround, and a special motor -- all of which I am working on as time allows.
When applied to current motors we will use 10" spiders as nothing we make can support 6" p-p yet -- I am tooling spider spacer pieces for it as well for linearity and to rise up and meet the cone as the 10" landing is recessed down a good bit.
Took a while to get to this one after I did the 8, 10, 12, and 15" frames for cost reasons -- but now is the time
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Sundown SD-3 Line : In the Works
in Sundown Audio - GREAT Amps/Subs! GREAT Customer Service!
Posted
SD-3 10" video that I made today.