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Brian Steele

or you can just buy the older model (1230w) its the same thing really Not quote - the 1060 has the cone edge turned down, which reduces cone flex and distortion. It's also 3dB more sensitive, according to the specs given at the Crutchfield site. The spider may also be different (nomex, vs cotton), ...

Brian Steele

lol trust me if brands like SSA & JL were in my budget i wouldnt need a topic like this. ur right tho it would probably the best thing. The SSA DCON 12 is going for about $125 US now, not including shipping. The JL driver recommended by SR looks pretty decent as well, specs-wise. The MTX 5500 12" d...

Brian Steele

I say ignore the power ratings. Have a look at the efficiency (NOT THE SENSITIVITY!) rating of each sub that you're looking at first, then consider its power handling. I suspect that something around 87dB/1W/1M or better should work fine for your needs. Not too high though, otherwise you're in the r...

Brian Steele

hey wanted to know how will a sub with this specs play FS 59.97 HZ RE 2.0 OHM QMS 9.744 QES 0.32 QTS 0.31 RMS 11.1917 CMS 0.0243 MM/N MMS 289.41 G BL 26.1 TM SPL@1W 91.16 DB VAS 10.52 L XMAX 15 MM XCOIL 51 MM Curious mix of parameters. You don't usually see a "subwoofer" with that high an Fs unless...

Brian Steele

Hmm... 1. No mention of any techniques used to reduce Le variation (like copper rings on the pole, etc.). Compare to the discussion of the AV12 motor provide by John J... 2. Good point on the tinsel leads not being woven into the spider. Infinity actually seems to have the best solution I've seen so...

Brian Steele

i doubt you would be disappointed with any product from sound solutions.. those guys seem to know their stuff when it comes to woofer design.. i didn't model the sub in any program, but doesn't 2.75cu.ft seem large for a single 12"? i.e. possibly muddy or boomy sound.. i noticed their optimum recom...

Brian Steele

mind if i ask what are you going to do with the woofer? Probably do some performance measurement tests on it first, then decide on how I'm going to use it :). Probably 1.2 cu.ft. sealed or 2.75 cu.ft. vented @ 28 Hz if the measured specs match the published ones. The low Q of this driver allows for...

Brian Steele

that's a really low QTS for just a 300W sub! and it weighs in at 20lbs too! i would have preferred if it had a slightly higher power rating though, like in the 500W range.. looks like a great sub, give it a try and let us know how it works out.. Yup, I'm really tempted, though I am reminded that th...

Brian Steele

tweets x at 5000 and 12 db, I played some music with the cloth clipped on the glass and it reduces the piercing heights somewhat. I think I might have to redo the pods. Trying to figureout how to make aimable pods that not big How about a foam diffraction ring around the tweeter? That should reduce...

Brian Steele

http://www.soundsolutionsaudio.com/stor ... %7DS4.html It's not a fancy-looking driver by any means, but the specs do look very interesting (starting with a nice low Q, so it shouldn't sound like those high-Q ~40 Hz drone-machines that other companies pass off as subwoofers) . The 300W rating may be...

Brian Steele

Phasing issues, like the others said.

How about building it as 6 separate dual-driver T-Lines stacked together? That might help with the phasing issues. Just make sure the path length from each driver to the vent exit remains the same.

HornResp can be used to model the response.

Brian Steele

A fuse can always be used to estimate the power capacity of an amplifier, after all, isn't the fuse the very component that will decide how much current flows in and out of the amplifier! Wrong. Wrong. Wrong. Wrong. The rated current for a fuse is the maximum amount of current that the fuse can car...

Brian Steele

Using the fuse rating to estimate the output of an amplifier is a bit like using engine displacement to determine a car's top speeed....

Brian Steele

http://www.parts-express.com/pe/showdet ... er=071-254

Brian Steele

audiokev wrote:waw..really? now thts impressive

Yup. Wasn't even aware when it happened - Deon Bearden (now with Klipsch, I think), dropped me an e-mail back then when he noticed it to let me know, LOL.

And to think the website started off simply as a convenient place for me to store my notes...

Brian Steele

That's easy - being returned as the first link in a Google search for "subwoofer".

Sadly my website's standing has fallen since then - don't have the time to keep it up.

I still own "DIY subwoofer" though

Brian Steele

why need an internal fan if they are as efficient as a class D? would like to hear them perform though.. The efficiency of Class G amps usually lies somewhere between Class AB and Class D - see http://en.wikipedia.org/wiki/Electronic_amplifier , so I wouldn't say that they're as efficient, all else...

Brian Steele

Brian Steele , so its not as good as the class D. that's what you saying right? what's the damping factor of this amp? i can't find it online From an engineering perspective, a good class D amp, with its smaller form factor and higher efficiency, is a better match for the car audio environment. For...

Brian Steele

Looks like a Class G design. A Class H design continuously varies the supply rail voltage, rather than switching it between more than one level. Class G and Class H designs have actually been around for ages. Years I go I used to service my brothers' Soundmaster(?) pro audio amplifers - they were Cl...

Brian Steele

41 Hz tuning seems to be a bit high for an SQ install...

Brian Steele

dude ur camera takes some very clear pix ... :shock: Would you believe that it's an old 4.2MP Panasonic? Damn thing refuses to give up... The pics are from a car show held here back in 2007. I would have taken more pics, but they wanted me to help with the judging too. The artwork was just wild on ...

Brian Steele

http://www.diysubwoofers.org/images/soundoffs/20070429-carshow-01.jpg http://www.diysubwoofers.org/images/soundoffs/20070429-carshow-02.jpg http://www.diysubwoofers.org/images/soundoffs/20070429-carshow-03.jpg http://www.diysubwoofers.org/images/soundoffs/20070429-carshow-04.jpg http://www.diysubwo...

Brian Steele

http://www.diysubwoofers.org/images/soundoffs/20070428-carshow-01.jpg http://www.diysubwoofers.org/images/soundoffs/20070428-carshow-02.jpg http://www.diysubwoofers.org/images/soundoffs/20070428-carshow-03.jpg http://www.diysubwoofers.org/images/soundoffs/20070428-carshow-04.jpg http://www.diysubwo...

Brian Steele

(...Rovin...) wrote:A tuner came by me & said his bass not sounding like he expecting it to sound since it was a 12" RE SX so i sat in the front seat of his Lexus & took a listen & i agreed with him

So, apart from the funky terminal thing, you basically replaced a small vented box with a big vented box?

Brian Steele

ok so i checked the high pass filter on the amp and its at 120Hz. And yes the tweeter looks exactly like those Power Acoustik tweeters except its not Power Acoustik, i dont know the brand of them its not written. Ok so what shud i do? 120 Hz is WAY too low a frequency. Multiply that by 60 and you m...

Brian Steele

was wonderin the same ting..i left on park lights and ting overnight never run down the battery. Ever tried doing that after you spending four hours running the whole audio system off the same battery so the engine noise wouldn't affect your RTA measurements? :) :) :) In any case, I think the batte...

Brian Steele

a speaker's xmax and xmech cannot be used to judge how loud a speaker can get effectively all together , remember there are alot of other factors involved Way too many factors to draw any definite conclusion. For example, cone area isn't the be-all end-all. Check Sundownz's thread for example, wher...

Brian Steele

Allyu forget I used to live in T&T for 16 years

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Brian Steele

[quote="slacker_jack"]by chance its not these: http://www.autotoys.com/pics/thumbs/t_NB1.jpg That's like the same damn ting with a different outer shell :). Quite a few people like them because they're as loud as hell (100dB/1W!). Of course it's not made clear that they probably can't hand...

Brian Steele

well actually they are just circular and plastic about an inch in diameter. Aargh.... do they look like this? http://www.diysubwoofers.org/misc/images/20080517-cheaptweet-01.jpg ... and like this, if you open them? http://www.diysubwoofers.org/misc/images/20080517-cheaptweet-02.jpg