Axz Hout Posted April 7, 2016 Share Posted April 7, 2016 S Quote Link to comment Share on other sites More sharing options...
Pete H Posted April 7, 2016 Share Posted April 7, 2016 Ok, so I don't have a clue what you're asking about as I have built 2 of these, but the plans I had called for 15's, not 12's or 18's, so I wish I could help, but what plans did you build from that called for an 18? Quote Link to comment Share on other sites More sharing options...
Axz Hout Posted April 7, 2016 Author Share Posted April 7, 2016 W Quote Link to comment Share on other sites More sharing options...
Pete H Posted April 7, 2016 Share Posted April 7, 2016 Cool, I still can't answer your question, but I didn't know you could do this as an 18. I can tell you that with a Dayton Audio SA230 it will drive the 15" version with plenty of headroom, but that still doesn't answer your question. Can't imagine what it sounds like with an 18, as it's pretty stout with a 15 for sure. Quote Link to comment Share on other sites More sharing options...
Axz Hout Posted April 7, 2016 Author Share Posted April 7, 2016 D Quote Link to comment Share on other sites More sharing options...
Pete H Posted April 7, 2016 Share Posted April 7, 2016 I don't have the ability to answer that for you, but I'm sure someone will chime in that can. Quote Link to comment Share on other sites More sharing options...
Axz Hout Posted April 8, 2016 Author Share Posted April 8, 2016 W Quote Link to comment Share on other sites More sharing options...
jason str Posted April 8, 2016 Share Posted April 8, 2016 49 volts is a thermal rating, you will more than likely run out of cone travel causing damage well before that. Quote Link to comment Share on other sites More sharing options...
Axz Hout Posted April 8, 2016 Author Share Posted April 8, 2016 N Quote Link to comment Share on other sites More sharing options...
jason str Posted April 8, 2016 Share Posted April 8, 2016 (edited) Your woofer is way off in terms of T/S parameters for the design, you will need to measure yourself. Edit: I see what you are after now, disregard. Edited April 8, 2016 by jason str Quote Link to comment Share on other sites More sharing options...
Axz Hout Posted April 8, 2016 Author Share Posted April 8, 2016 A Quote Link to comment Share on other sites More sharing options...
Axz Hout Posted April 8, 2016 Author Share Posted April 8, 2016 F 1 Quote Link to comment Share on other sites More sharing options...
mustang guy Posted April 8, 2016 Share Posted April 8, 2016 mach-1, you can probably just look at the efficiency of the driver you are using as compared to the drivers you are wanting to compare against. The numbers should be relatively close. for example: rss460ho = 93db rss390ho = 92.8 lab15 = 88.5 Hey Jason, the LAB15's are on blowout on PE. I might nab a couple and build a pair of T-60's instead of T-30's. http://www.parts-express.com/eminence-lab-15-4-15-pro-audio-subwoofer-speaker-4-ohm--299-391 Quote Link to comment Share on other sites More sharing options...
jason str Posted April 8, 2016 Share Posted April 8, 2016 mach-1, you can probably just look at the efficiency of the driver you are using as compared to the drivers you are wanting to compare against. The numbers should be relatively close. for example: rss460ho = 93db rss390ho = 92.8 lab15 = 88.5 Hey Jason, the LAB15's are on blowout on PE. I might nab a couple and build a pair of T-60's instead of T-30's. http://www.parts-express.com/eminence-lab-15-4-15-pro-audio-subwoofer-speaker-4-ohm--299-391 You will need the 6 Ohm version, not the 4. Quote Link to comment Share on other sites More sharing options...
jason str Posted April 8, 2016 Share Posted April 8, 2016 mach-1, you can probably just look at the efficiency of the driver you are using as compared to the drivers you are wanting to compare against. The numbers should be relatively close. for example: rss460ho = 93db rss390ho = 92.8 lab15 = 88.5 Hey Jason, the LAB15's are on blowout on PE. I might nab a couple and build a pair of T-60's instead of T-30's. http://www.parts-express.com/eminence-lab-15-4-15-pro-audio-subwoofer-speaker-4-ohm--299-391 Driver sensitivity means very little in these horn loaded subwoofers, using this method will not give an accurate measurement. Quote Link to comment Share on other sites More sharing options...
Axz Hout Posted April 8, 2016 Author Share Posted April 8, 2016 F Quote Link to comment Share on other sites More sharing options...
mustang guy Posted April 8, 2016 Share Posted April 8, 2016 mach-1, you can probably just look at the efficiency of the driver you are using as compared to the drivers you are wanting to compare against. The numbers should be relatively close. for example: rss460ho = 93db rss390ho = 92.8 lab15 = 88.5 Hey Jason, the LAB15's are on blowout on PE. I might nab a couple and build a pair of T-60's instead of T-30's. http://www.parts-express.com/eminence-lab-15-4-15-pro-audio-subwoofer-speaker-4-ohm--299-391 You will need the 6 Ohm version, not the 4. Doesn't that depend on the amp? Why would a 4 Ohm driver not work? mach-1, you can probably just look at the efficiency of the driver you are using as compared to the drivers you are wanting to compare against. The numbers should be relatively close. for example: rss460ho = 93db rss390ho = 92.8 lab15 = 88.5 Hey Jason, the LAB15's are on blowout on PE. I might nab a couple and build a pair of T-60's instead of T-30's. http://www.parts-express.com/eminence-lab-15-4-15-pro-audio-subwoofer-speaker-4-ohm--299-391 Driver sensitivity means very little in these horn loaded subwoofers, using this method will not give an accurate measurement. You are wrong my friend. Driver sensitivity always matters. Sorry to disagree... Quote Link to comment Share on other sites More sharing options...
mustang guy Posted April 8, 2016 Share Posted April 8, 2016 Jason, Never mind. I found the thread about the 4 ohm off spec Lab15's on the BFM site. The TS specs are way different on those. Too bad.... Quote Link to comment Share on other sites More sharing options...
Axz Hout Posted April 8, 2016 Author Share Posted April 8, 2016 S Quote Link to comment Share on other sites More sharing options...
jason str Posted April 8, 2016 Share Posted April 8, 2016 (edited) mach-1, you can probably just look at the efficiency of the driver you are using as compared to the drivers you are wanting to compare against. The numbers should be relatively close. for example: rss460ho = 93db rss390ho = 92.8 lab15 = 88.5 Hey Jason, the LAB15's are on blowout on PE. I might nab a couple and build a pair of T-60's instead of T-30's. http://www.parts-express.com/eminence-lab-15-4-15-pro-audio-subwoofer-speaker-4-ohm--299-391 Driver sensitivity means very little in these horn loaded subwoofers, using this method will not give an accurate measurement. You are wrong my friend. Driver sensitivity always matters. Sorry to disagree... Edit: messed up the quote a bit but refer to post #17 Nothing to be sorry about, let me explain why your theory is wrong. Driver sensitivity means very little, frequency response will vary wildly from driver to driver within T/S parameter range of the design. Throw one in the mix that is pretty far out of T/S range and your frequency response will not even be in the same ballpark. This is why comparing by sensitivity alone will not be accurate. Edited April 8, 2016 by jason str Quote Link to comment Share on other sites More sharing options...
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