sundownz

The amps are on the final truck to us and are in Charlotte this morning. Assuming nobody drops the ball big time we should have them today. Being that they must ALL be tested I am not sure how many if any will ship out today but I'll have tons of pictures at least when they come in and we start testing =) These are ALL sold already -- just an update for those that ordered them.

It really doesn't even do that... the real responses aren't like the graphs at all when we measured them. These days I don't use a box program for anything more than calculating port tuning as they are so often separated by a big margin from what really happens. How are you measuring them? SPL meter in the vehicle under power (~600 watts) at 5 Hz intervals. The giant peak on the ISD graph shown for the Skar woofer simply doesn't happen for instance... the shape of the response is very much like the Obsidian despite a VERY different model. ---- We use box programs to calculate port size and anechoic F3 -- then use knowledge of how things typically react in a car to suggest box spec to customers. Over-studying the graphs in box model programs is something I was VERY guilt of early in my audio years... but I've learned better

Also... we did do a dash score -- 6 Hz lower at 62 Hz : 149.9 dB With a fresh charge it should be over 150 dB but we did so much testing yesterday that was all we got

I am extremely pleased... We went from 152.5 to 153.3 changing from a 3500D to a 4500D -- this is essentially the most possible gain we could have had changing amps. The 4500D is about 33% more powerful which in a perfect world would be just 1 dB gain... the fact that we gained 0.8 dB in reality on ONE EIGHT INCH woofer at this much power tells me just how much more we could still have in this woofer as it's just barely hitting any output compression vs. theory even still.

153.3 video

Big subs come with them -- the ones we build in house like the Z v.3 SA series and smaller do not.

Video Caption : Purposely tearing up an E-10 to demonstrate what it takes to do so. We are seeing *clamped* power of 50-100% of the woofers rating with NO BOX for 3-4 minutes straight in order to hurt the woofer. When using an amplifier rated for 400-500 RMS on these woofers in a day to day situation it will be EXTREMELY difficult to damage them. Again... this was intentional abuse -- any person hearing the type of mechanical noises we did in this testing would obviously turn it down =)

It really doesn't even do that... the real responses aren't like the graphs at all when we measured them. These days I don't use a box program for anything more than calculating port tuning as they are so often separated by a big margin from what really happens.

If that would of shown up before I built my current box, I would of been running those! Some 18s I can run without needing a new amp! new box ?

It sure is -- super low price for what the driver is capable of, IMO.

The OA having a bit more bottom end compared to an SA is an accurate assessment -- on the other side of the spectrum the SA will typically produce more peak SPL up higher contrary to what the chart shows you based on our actual in-vehicle tests. Both are extremely capable drivers... just don't over study the WinISD charts.

I cannot seem to find it off hand... but there is a build for four 8s under a truck sheet.

Just finished unloading... will ship pre-orders next week as they all must be tested. I am very happy so far with how they turned out -- hope that customers enjoy them as much as I think they will ! If I ever get time I may drop one of these in my Jeep and see if I can still do a 150 with one of these 15s *laughs* Would be fun to try at least.

Amp details will come soon

It's quite necessary as we are actually shifting manufacturing facilities... while I'm at it I am improving them as I'd need to re-tool anyway. Going to a Chinese manufacturer? No, the SAX and SAZ will remain Korean made amps -- just a different Korean factory. As all of our Class-D boards are custom tooled for us in their present form -- so we don't plan to use any stock boards at the new facility either. It's actually been a while for any significant amp changes... I believe other than the NS-1 it was the first of 2011 or so since the last major change.

Yes, we will have room for over 2" one-way on all of the frames and be able to use spiders that will withstand that

Components are in testing but a relatively low priority vs. amps and subs which is what we are best known for.

It's quite necessary as we are actually shifting manufacturing facilities... while I'm at it I am improving them as I'd need to re-tool anyway.

If you will have them paid up before they arrive that is fine -- you would need to email me to set it up.

For daily about 12 in^2 each "Port Area" or "Port Area Per Foot"? Couple more Questions: 1. Being that there's no pole vent, very little space needs to be left behind sub and thus allowing the build of a little shallower enclosure? 2. What's the displacement? Area per woofer of 12 in^2 1) That is correct -- little to no space needed behind it. 2) 0.1

Sealed spec is around 0.25 or so -- but is not the best setup for our 8s.

So I got up with Dave about making me a cool passive radiator... why, you might ask ? Well... first, I don't make passive radiators. Second... Dave does and he does good work. Third... fitting a port in the box for one SA-8 is a chore and very often not practical. So... the solution is a PR of course ! Dave can make these for other applications as well -- check them out at PSI Car Audio. On the the photos : * Adjustable mass for even lower tuning... we expect to be in the mid 30s with stock mass on this PR. The PR really looks great -- Dave's usual high quality work. I'll get pictures and data up once I have time to make the box. This may become an officially suggested product for usage with SA-8s if it works as well as I think it will!

Yes, it's much easier to manage the port with 2 or more.