i hope this hasn't been asked 100's of times already, but i did a search and couldn't find much on them! anyway, i'm looking at upgrading from 2 quite old ts w304 pioneer subs, svc, 12 inch, 600 w max, to 2 eclipse sw7124dvc.t2 subs. running off a alpine mrd 500 amp. i know there will be a pretty good increase in sound level and quality, but not sure how they rate against all other subs in that sort of class (maybe rockford or alpine instead-similar money about 400 to 550 australian dollars) and whether my amp will make them work enough. any help be good! thanks!
Replies (4)
swez on 04/3/2006 08:02:20
That's a fairly strong sub and somewhat pricey here too mate. (Almost $250.00 US/ea.) To get the most from a pair of these, that amp is a mite weak.
Would you consider a single 4+4, 12 DVC (Eclipse or Alpine SWR 1242D for that amp?
If you have access to Infinity Reference Series subs, a pair of these would be a good choice, off that amp too and probably much cheaper. Have a look:
http://www.crutchfield.com/S-joyyR0YiDkN/cgi-bin/ProdView.asp?g=520&I=1081250W
Specs:
» 12" 4-ohm subwoofer
» polypropylene woofer cone with large-roll rubber surround
» innovative basket design minimizes depth
» progressive spider design for excellent cone control
» frequency response: 23-400 Hz
» power range: 60-300 watts RMS (1,000 watts peak power)
» sensitivity: 93 dB
» top-mount depth: 5-1/8"
» sealed box volume: 1.25 cu. ft.
» ported box volume: 2.00 cu. ft.
These are rated for 300 watts (RMS) per sub, 4 ohm SVC's and will sound fine in a 1.0 - 1.25 cf sealed box.
Not saying the Eclipse sub is a bad choice. However, they like power and if you ran two of these, expensive and a larger amp would be most appropriate. (800-1,000 RMS amp) This size amp may tax your stock electrical system pretty hard too.
Think it over carefully and look for high efficiency subs that match up well with your amp and present enclosure too.
Comments?
Swez
bairsjw on 04/3/2006 09:43:39
fair enough. i had sort of decided they were a bit big! am i going to lose or gain going from 2 subs back to one though, no matter how good the single? enclosure is not a problem, can whip one up no worries. would you have the link for the box size calculator tho? thanks for your advice!
bairsjw on 04/3/2006 09:49:20
just found the link for the calculator.
swez on 04/3/2006 16:23:48
Am seeing a trend for guys to drop to one strong sub and often go ported too. That allows more stowage space, a smaller enclosure and less hassles, moving them around as needed.
If you go ported on the sub of choice, follow the Mfg's enclosure dimensions and tuning frequency suggestions. You can adjust tuning freq up/down, based on enclosure size and port dimensions.
However, it is a good idea to use a Sub Sonic Filter to block lows under the port tuning target. For deep lows, 35-40 Hz., tuning target is good and we pick up +3dB more SPL near tuning freq, from using the port. Now, a 300 watt amp, has the same sonic output as a 600 watt amp used for sealed systems and no electrical upgrades required.
Enclosure/port calculators:
http://www.the12volt.com/caraudio/boxcalcs.asp
Swez
Replies (4)
swez on 04/3/2006 08:02:20
That's a fairly strong sub and somewhat pricey here too mate. (Almost $250.00 US/ea.) To get the most from a pair of these, that amp is a mite weak.
Would you consider a single 4+4, 12 DVC (Eclipse or Alpine SWR 1242D for that amp?
If you have access to Infinity Reference Series subs, a pair of these would be a good choice, off that amp too and probably much cheaper. Have a look:
http://www.crutchfield.com/S-joyyR0YiDkN/cgi-bin/ProdView.asp?g=520&I=1081250W
Specs:
» 12" 4-ohm subwoofer
» polypropylene woofer cone with large-roll rubber surround
» innovative basket design minimizes depth
» progressive spider design for excellent cone control
» frequency response: 23-400 Hz
» power range: 60-300 watts RMS (1,000 watts peak power)
» sensitivity: 93 dB
» top-mount depth: 5-1/8"
» sealed box volume: 1.25 cu. ft.
» ported box volume: 2.00 cu. ft.
These are rated for 300 watts (RMS) per sub, 4 ohm SVC's and will sound fine in a 1.0 - 1.25 cf sealed box.
Not saying the Eclipse sub is a bad choice. However, they like power and if you ran two of these, expensive and a larger amp would be most appropriate. (800-1,000 RMS amp) This size amp may tax your stock electrical system pretty hard too.
Think it over carefully and look for high efficiency subs that match up well with your amp and present enclosure too.
Comments?
Swez
bairsjw on 04/3/2006 09:43:39
fair enough. i had sort of decided they were a bit big! am i going to lose or gain going from 2 subs back to one though, no matter how good the single? enclosure is not a problem, can whip one up no worries. would you have the link for the box size calculator tho? thanks for your advice!
bairsjw on 04/3/2006 09:49:20
just found the link for the calculator.
swez on 04/3/2006 16:23:48
Am seeing a trend for guys to drop to one strong sub and often go ported too. That allows more stowage space, a smaller enclosure and less hassles, moving them around as needed.
If you go ported on the sub of choice, follow the Mfg's enclosure dimensions and tuning frequency suggestions. You can adjust tuning freq up/down, based on enclosure size and port dimensions.
However, it is a good idea to use a Sub Sonic Filter to block lows under the port tuning target. For deep lows, 35-40 Hz., tuning target is good and we pick up +3dB more SPL near tuning freq, from using the port. Now, a 300 watt amp, has the same sonic output as a 600 watt amp used for sealed systems and no electrical upgrades required.
Enclosure/port calculators:
http://www.the12volt.com/caraudio/boxcalcs.asp
Swez
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