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altoncustomtech

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Posts posted by altoncustomtech


  1. That’s completely understandable and what most people are thinking. When you’re talking about subwoofers it can matter but when you’re dealing with mids or highs it’s not nearly as relevant. The frequencies that they play don’t require any real power to reproduce in the first place. 


  2. I’m not convinced that you don’t have a wiring/connection issue. The amp you have is rated for 75x4@4 ohms (class a/b)  + 325x1@4, 500x1@2 or 750x1@1 ohm (class d). I have a difficult time believing that that amp is drawing more than your upgraded electrical can handle. 

    Granted the lighting in some vehicles can really exaggerate the voltage drop and you definitely need to verify just how bad the drop is but I’m thinking you have a connection issue somewhere. 

    For instance my wife’s Traverse is running a Zapco ST-4D bridged and an Arc Audio XDi2000.1 @ 1 ohm on all stock electrical (180A alt and stock group 48 600cca wet cell battery) with only minor dimming on the hardest bass lines. It didn’t really even start dimming until recently as the battery has gotten weak and is in need of being replaced. 

    An AGM replacement battery is still a great idea and highly recommended by us all though. 


  3. Wow, you must live somewhere the weather is really great if you’re jonesin’ for a ride right now, lol.  I am looking forward to riding weather again but it’s not even remotely on my radar when I look out the window right now.

    I’m sure you will hear from them soon, especially after posting this topic, that usually gets extra attention. 


  4. My first suggestion would be to forget the rear speakers and put that money and effort into the front speakers. Rear fill is simply useless and a waste of money. I had a ‘98 Chevy Venture and people in the back seat never complained about not hearing the highs. 

    As for the front speakers, if you run the front doors with a pair of 6.5’s you’re already going to have a 2 ohm load unless you’re planning on using 8 ohm speakers in that location. Secondly the smaller 3.5-4” speakers are never going to handle that much power full range. You’re better off using the freed up (after not going with rear fill speakers) rear channels of that five channel amp to power those separately. Then you can use your HU’s, the amplifiers, or a separate signal processors high pass filters to cross them high enough that the bass and midbass won’t be an issue for them. 


  5. 16 hours ago, ManzKea said:

    Oh ok I got ya. And damn that sucks lol some of the lengths it’s giving me is pretty long lol and you’ve just clarified that it’s each port lol. Thank you my good sir! I assume the same goes for a slot port ?i see some people putting dual ports in boxes. 

    Yes it’s the same, no matter what the shape or configuration of the port is, the more port area you have the longer the length has to be in order to maintain the same given tuning frequency. 


  6. I don’t think wanting to use the XS-28 tweeter from the Image Dynamics components and the Fi N.7 mid as he originally suggested aside/outside from/of the PRV mids were necessarily illogical choices. Maybe not ideal or what either of us might do but not illogical. 

    I definitely agree with Sean to steer clear of the PRV equipment, it’s just not going to perform in a fashion that coincides with rest of your build. 

    What do you have for processing power?  A DSP of some sort such as the miniDSP or the JL Audio TWK88 are great choices and on the more budget friendly end of the spectrum. 


  7. I have the same era of Q series subs I got back in 2009, been running strong ever since. 

    The idea you have is called running “active”, and the preferred way a lot of us run our equipment. The passive crossovers don’t do the original drivers from your component set much justice but they sure as hell don’t do other random drivers any justice at all. All your thoughts are pretty much right on the line of thinking we typically recommend to folks with the same kinds of questions. 

    The Fi N.7 mids are sold as a pair for that price. The SSA Evil mids are a great option as well and you can always look into raw drivers from Seas, Scan Speak, Peerless, Dayton and so forth. 


  8. That’s an awesome list of equipment!

    I have no doubt that you’re going to thoroughly enjoy it. I have a 10” XCON myself and I couldn’t imagine replacing it with any other subwoofer. I have the mids, tweeters and four channel amps as well but I’m still looking for the opportunity to get them installed. Soon I hope, very soon!!

    Welcome to the forum!


  9. Well, I’ve said I was going to get pics up when I started to get around to reconing the DCON’s, and we’re finally there!!!!

     

    If anyone cares to remember I had one making a rattle new out of the box. Of course the guys at SSA were super quick to get me taken care of with a recone, no question about their top notch customer service!!  In the meantime my wife managed to fry the Zapco Z-1KD that was originally powering them so I replaced it with the only amp I had that could fit the amp rack, an Arc Audio XDi-2000. I figured hell with it, if I blow the one that’s rattling it’s no biggie there’s a recone coming and if the good one was to go I’d just order a recone for it and freshen them both up. 

     

    They did remarkably well in my opinion for having 2.5x their rated power on tap, and the way my wife tends to run the system I have no doubt they saw every watt of it regularly. The coils are a little darker than the new ones on the recones but they aren’t burnt. Despite the surrounds showing clear signs of being stressed I couldn’t find one sign of wear, stress or damage on the spiders. The cause of the rattling sound on the one that rattled brand new and the rattling that started in the good one after the enclosure blew out is clearly evident on the coils. They rubbed pretty darn good with the one clearly working towards failure. 

     

    The last couple of pics are of one of the new recones for comparison. 

     

    I also have to say that while I’ve not taken LOTS of speakers apart I have dismantled quite a few in my time in this hobby. Never have I come across a surround or spider material that was this difficult to cut. If I hadn’t just sharpened my knife a little over a week ago I would had to have found a box knife and a new blade to put in it to get them cut apart. These things are definitely built super good out of superior quality materials. 

     

    Well, that’s enough rambling for now, here’s some pictures as promised for your speaker porn entertainment!!  LOL

     

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  10. On 11/14/2017 at 10:55 AM, j-roadtatts said:

    Awesomely cool technical read Alton. Always neat to see measurements along with an explanation, such as the graghs showing the reflections along side the signal. Also the graphs showing where an x-over point ends up once one source is boosted from another. Makes sense of why what would seem like a separated x-over point and slope can blend better than what one would think. lol

    Definitely!!  That’s why I posted them all up, it is great information for the inexperienced and the experienced alike. 

    4 hours ago, j-roadtatts said:

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    This was the other point made I found interesting. I don't believe he mentioned tweeter polarity anywhere though, except in regards to crossover slopes.

    I am in the process of installing a new DSP (h800), So was a perfect time to read this. I will give his approach a try! 

    I can’t wait to hear how that goes!


  11. There’s so dang many to choose from out there it’s crazy. 

    I have an SQ building friend who works at a brick and mortar audio store who says that these Ampere Audio coaxials are well worth the price. 

    http://store.soundsolutionsaudio.com/products/ampere-audio-100w-6-5-coaxial-set.html

    Otherwise these Pioneers have always sounded pretty decent to me. 

    https://www.sonicelectronix.com/item_11269_Pioneer-TS-D1602R.html

    There’s just too many to mention really. The absolute best thing you could do would try to get out there and listen to as many as you can. Just because the sound of one set pleases me doesn’t mean you’ll find it as nice. 


  12. 6 hours ago, j-roadtatts said:

    Thanks for the write up! always fun to read your stuff.

    I definitely enjoy every moment listening to my 15" Dcon. Great sub. Sounds beyond amazing in the enclosure a killer box designer helped me with! :)

    I’m glad to hear that you’re still enjoying it!!!!

     

    3 hours ago, Jimi77 said:

    I've seen them take 750wrms.  It's amazing how well the coil did.  Given the condition of the coil, if those were in ported box, they still might be alive kicking.  ;)

    I’m certain of it. So certain in fact that I designed an enclosure especially for proving that point. The only issue is I’m not sure I’m going to follow through with it because as of the time my order was fulfilled for the second recone I learned that my recone will be the last recone made. Which means that if they’re damaged after this they’re done, no more, and even though I can get a recone elsewhere they would never again be a true DCON. 


  13. 1 hour ago, Aaron Clinton said:

    Nice post. :)

    Giving credit where credit is due.  I would never just recommend someone do something like that but I felt that it was the perfect opportunity to do a little destructive testing. I honestly feel like they handled it in fair stride. It definitely impressed me they held up to it as long as they did and honestly they could possibly have been good long term if it wasn’t for the enclosure. The worst part is that the enclosure failed the worst on the side with the good sub. If it would have been the other side I probably wouldn’t have needed the second recone. 


  14. Got my two in today. For such little subs they sure make you go “WHOA!” when you pick one up. 20lbs for an 8” sub is definitely not typical, lol.

    While it’s still strange to me to see “Made in China” on the side of a box with the SSA logo right above it, the little beasties seem to have the build quality, fit and finish one expects to see where the SSA brand is involved. I know in my heart they never would have been approved for and financed into production if they didn’t.

    The T/S parameters are pretty nice across the board and in a few aspects a notable difference over comparable offerings from other manufacturers. They also enter well in WinISD with everything checking out through the auto calculations very very close to published specs. With an EBP of 120 they are DEFINITELY only meant to be used in a ported alignment, they’re never gonna work in a sealed enclosure. That’s probably the only oddity I myself notice in the parameters and probably only because I have never seen an EBP that high before. 

    I’m currently trying to kick off the build in my 2007 Grand Prix and I plan to build a modular interface at the trunk opening where the seats fold down so that I can build enclosures for the F8L’s, my soon to be revived 10” DCON’s and a pair of NVX XQW 12’s so that I can slide each enclosure in and out for testing. I am going to build a sealing system and a locking mechanism into it so that each of those and any other enclosure I build for whatever testing purposes will have the same great seal into the cabin of the car. 

    Well, enough of that jazz how about a little box opening porn??  Well as soon as I get the pictures to upload...  damn slow rural internet connection...

     

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