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Dayton Audio ST305-8 12" Series II Woofer
I own pair Cerwin's Vega E-312, the bass start to make a noise, (not scratch) I take out the originals and and they look cheap and not heavy weight. My amp has 125 rms/ch and I think maybe they need more powerfull drivers. Advice please. Thanks
I need replace the 12" woofer on my CERWIN VEGA AT-12 and the one similar I have available is a 8 ohm. Since the original speaker is 4 ohm I need know if I can just replace with the 8ohm and sacrifice some power or maybe install 2 X 8ohm = 4 ohm?
The Series II woofer is a very popular replacement for this speaker. This will drop the available power from your amp, but only by 3dB. If you wanted to use a single 4 ohm woofer, the Dayton Classic 12" Subwoofer will also work for this application and is 4 ohm.http://www.parts-express.com/dayton-audio-dcs305-4-12-classic-subwoofer-4-ohm--295-204
Date published: 2014-11-24
how would this woofer perform in a vented cabinet with a volume of 1.8 cubic ft? If recommended, what would F3 be? What would vent length and diameter be? Thanks
This woofer will work pretty well in that volume. The tuning frequency will be slightly higher than "optimal" but it will still work fine. I would recommend two 3" diameter ports that are 10" long for a tuning frequency of 42 Hz.
Date published: 2014-10-28
With 70 watts of power, would these speakers have advantages over the DC300-8? They will go into ported 1.5cu ft cabinets. Also can I extend the 2.5in dia port tube with an elbow and extend up inside or reduce port diameter to tune the cabinet lower?
With only 70 watts there will be no real difference between these drivers in terms or tuning and output. The Series II will work a bit better in the smaller volume, but the audible difference would be negligible.
Date published: 2014-10-20
I need new woofers for my Sansui sp-2500 speakers (1.53 cu ft). The originals say 6ohm 25watt, and have an spl of 98db. My Sansui 7000 @ 70 watts rms per channel will be running these. Is this speaker a good replacement; other cheaper good candidates?
This woofer will work well, the sensitivity of the Sansui speakers is pretty optimistic. The less expensive Dayton Classic DC300 will also work well.http://www.parts-express.com/dayton-audio-dc300-8-12-classic-woofer--295-320
Date published: 2014-10-17
I changed my mind and want to put THESE 12s in my 1.65 cu. ft. box. What are the optimal port dimensions for this application?
I would recommend a 4" diameter, 10" long port for a tuning frequency of 40 Hz.
Date published: 2014-03-17