DevilDriver

Tuning any lower is relatively unnecessary for most people. 30Hz is a very acceptable tuning frequency for a vehicle on music. As for power handling, they can handle a great deal of power if you're familiar with how power works. I'm quite confident that two can handle a SAZ-1500D at 0.5 ohm thermally (which will probably be over 1 ohm after impedance rise), but it is very important that you have the necessary electrical system to support the SAZ-1500D at 0.5 ohm. They'll handle it, but when you start running out of current to supply the amplifier, you put it in damage (and the ICON as well). Have you given any thought to an aftermarket alternator and/or battery?

Yes. I recall that channels 1&2 may be HP from 50Hz-5kHz and LP from 30Hz-250Hz, making it suitable for your treble section. Channels 3&4 may be HP from 50Hz-1kHz and LP from 50Hz-5kHz, thus making it quite suitable for your midrange/midbass (yes, the HP and LP combination allows you to bandpass the midrange). Wonderful flexibility.

Just to clarify: this is a common occurrence when you have a fat bottom end. The perception is that the top end is lacking, when the reality is that the bottom end is exaggerated. A smaller enclosure would probably help you out there. Glad you're liking it, though.

Quoted for truth, but be on the lookout for a new forum for Canadians.

He's one of the dumb Canadians on the anti-Sundown front.

Mini fuse?

Be sure to post your thoughts on it when you get it.

So in case you didn't see the announcement, they are officially offering D1 ohm voice coil configurations on the Icon. If you order the 12D1, you'll be good.

Tonight, nothing. Tomorrow, probably pull the headliner & deaden up there, then go to the branch because large chested woman from the picture I posted a couple weeks ago requested that I come. Sunday, probably make the false floor for the trunk, then Rider game Monday, sleeeep all day. Riders better be winning. I started looking for tickets to the game about a month ago and there was hardly any left then, so I've resorted to a lot of beer on the couch. False floor should be interesting. Nope. Think closer, if you have time, I can bring it down for your ears to discern as well. I am quite strapped for time again, but there is suddenly a distinct possibility that the girlfriend and I will be going up to Saskatoon for a night or more. I'll keep in touch with you on that one. By "think closer", are we talking Blue Bomber closer? Putting some speaker enclosures together, going to a football game, finishing off the alcohol I have in my freezer, not in any particular order. If you do the third option first, options 1 and 2 will become a lot more entertaining. Not that I condone using power tools when drinking.

Scott: You testing power handling on the XJ-15 for Kyle?

I work at SaskTel managing number portability.

What's everyone doing on the weekend?

nice work dude I'm 21 and I come to work every day thinking "why don't these people work harder and/or smarter?" I guess that's life at a government job!

<<<< Drives an S-10. I'm not totally sure what "acceleration" means. My girlfriend's dad has a 454SS and a Monte Carlo SS. They're both fun to drive.

Hope I get a raise shortly. In less than a month, I have cut processing problems from just over 40% down to under 5%. I like when the bosses are happy with me, but I like it better when they pay me more.

I would send them an email and check. I believe there are some D1 coils that they could use if necessary.

I do like Bill Hicks. Makes for an entertaining listen, though I don't always agree with his points.

How advanced are we talking? Dr. Earl Geddes covers quite a wide range of important topics with supplementary mathematics that you might find useful.

I think anything over 140dB with a relatively musical setup is more than adequate and something you can be quite proud of.

I was quite sure you could buy them now, but I could be wrong. If I remember correctly, you can get more info at [email protected] or speak with Scott directly at [email protected]

Do it. I have been hearing things about the L3's and the L831's for a long time now. I'd like to give them a shot at some point, but I don't think that's immediately in the cards. Scott Buwalda is a very nice and very clever guy.

Just to add to this quickly... Hoffman's Iron Law. It applies to speakers, too! Take a 6.5" speaker for example. They generally take a very small enclosure, have medium efficiency, and lack low frequency extension. Now, it's hard to change enclosure requirements too much for a 6.5" speaker; if we try to gain more low frequency extension, we're going to give up efficiency. If we want more efficiency, we're going to give up low frequency extension. Hoffman's Iron Law applies directly to speakers, the same way it does to enclosures.

Very simple version: 6.5" speakers are, by nature, a bit limited in the amount of output you can achieve. There are a few designs out there that are almost viable for subwoofer duty if you get triplet's or quadruplet's going. The Tang-Band 6.5's are decent, the Mpyre 65X does not seem very dependable, and the EU-700 is, well, from eD. More complicated: There are two really big considerations in terms of output: 1. Linear displacement, determined by Xmax (the linear stroke) and Sd (the effective piston area of the speaker), and 2. Efficiency, determined primarily by Sd, Mms (moving mass), and BL. In terms of linear displacement, a 6.5" speaker is limited in two ways. First and most obviously, it has a small diameter diaphragm. In general, a 6.5" speaker will need roughly 1.5X the linear Xmax that an 8" speaker has to achieve the same amount of linear displacement. Second, a 6.5" speaker's Xmax is usually limited by the suspension. Again, keeping things very general, a 6.5" speaker has a smaller frame, and thus is accompanied by a smaller spider. The spider itself will be limited in the amount of throw it can support because there is not a lot of spider there to maintain a good restoring force over a long stroke. Of course, you can fiddle with the corrugations in a progressive spider to try and gain more throw from the suspension, but you will still be limited by the cone and frame geometry. In terms of efficiency, we already acknowledged that Sd (the effective piston area) is limited on a 6.5" speaker. The obvious positive here is that Mms (moving mass) is quite manageable. However, it is tough to get a lot of BL into a 6.5" speaker. To increase BL, we want to increase the number of windings in the gap or increase the amount of flux in the gap (assuming we haven't approached saturation yet). Increasing flux in the gap is simply a matter of reworking the steel in the motor, ie. going with a taller top plate to carry more flux, going with a wider or taller magnetic stack, etc. However, you still need the windings in the gap to utilize this flux. To do so, it is often easier to go with a wider diameter former. But since there's not much usable spider already (and we'd only be eating up more spider by increasing the former's diameter), we're really digging ourselves into a hole. Also, there are sacrifices in between the two. If you try to increase efficiency, by upping BL, you'll give up some linear excursion in the suspension. If you try to keep a lot of linear excursion, you'll give up some windings in the gap and lose BL, thus losing efficiency. Personally, and this is just my opinion, an 8" is the absolute smallest I would consider usable for a subwoofer, and even then, you can run into similar issues. Hell, there are a lot of 10" subs on the market that have some major difficulties reaching the levels of excursion their motor is capable of.

You get my last PM? The one from yesterday around 4? Guess that would have been around 6 your time. If that's the one, then yes, I have received it and will reply in a bit.

#35 FTW.