mrogowski

Ok, update on the SPL drivers.... They *are* leaving the buildhouse on Saturday May 17. My apologies to those who have been waiting. They are on the way! Best, Mark

Ok, I lied. I'm not a beer snob I like <almost> all beers!

Beer snob? Why yes, yes I am...

Thanks for the fix. Yeah, definite leakage. Not one of my better box builds. Trust me, my skills are much better than that

For those who like watching videos on ROE, I decided to record an SPL-12 in the Bonne. Oh, and its gangsta music: http://www.mach5audio.com/download/spl/Mach5-SPL12.wmv

Viper, if you want to test a PR for me, let me know...

Viperoni jumped on a couple of used units I had here. Should be interesting to see the results...

Ha, yeah I wish. Either way, its still a setback that we have to deal with. m

So I guess their statement to me last week was a bit premature. They are waiting on the SPL-15 crates which were supposed to be delivered, but never made it. I told them to put a rush on things. Thought you guys should be updated. Mark

Nope. It will take a few weeks travel time. Trust me, you'll be the first to know when they arrive

Just an FYI: 20AWG wire can take about 30 amps of current before failure...

I've seen MDF fail while the glue joint remained intact...

Yes.

Hi there, It sounds like you've been around IB and pretty much know what it is you want. I do agree with M5 though - I doubt you would notice a weight difference by dropping from four 12's to two 15's, unless of course, other excess weight follows (amp(s), battery). I also wouldn't be too concerned about switching from four 12's to two 15's either. If you can match the displacement-per-power ratio between four drivers verses two, there will be no compromise in output whatsoever. You mention the 12's were only working at around half excursion. Unfortunately, not knowing the design, you could very well have been reaching Xmax at that point (or past it) and not know it. If however you do know the parameters of the 12's and can roughly judge just how much you were exerting them, this can be a baseline for choosing 15's that will work for you. The folks who tend to worry more about excursion are those who are building subs for home theater applications (e.g. this driver has 2mm more Xmax than that driver so it MUST be better - yeah right...). Since your focus is on music only, excursion by itself becomes a much less of a factor, but a factor nonetheless since you are now trying to equal the output of four 12's with only two drivers. Can you move to two 18's instead? If not, then you are left with choosing two fifteens that can handle the throw and more power to achieve what it is you can already do. Good luck! Mark

When I get them.

Ok, so the SPL-15's will be heading to me this week - on schedule So, 110% on the reactor!!

Usually about 3-4 inches. Do you have the parameters of the sub? You would normally want to build large and tune low, if you can. Doing that will allow you to pick up some of the ultra lows that exist in today's movies. Best, Mark Edit: Ha! Sean beat me to it..

Oh, well that's not a good sign is it...

Ok, cool. Thanks!

Well, the used Orion 8004 crapped on me and after trying to pinpoint where the issue was, I decided to scrap it. Noticed the Zapco i-450.4 selling at a local shop for $190USD (on EBay). I know it is a new line, but I'm curious if anyone has used one, or can tell me if the price is decent. Looks to be about what I'm after - 4 channel @75watts RMS, has all the xover bells and whistles which I won't need. Using it for complete active setup. Thanks, Mark

Won't know until they are ready to ship. Sorry.

Can I ask how much power you have on tap?

Duct tape isn't environment-friendly enough...

That's what tie-downs are for.

Ok, rather than going on another post deleting rampage, I will ask Richard if he can start a new thread when he is ready to post the second part of his testing.