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Dayton Audio SD270A-88 10" DVC Subwoofer
Will this be a good replacement for my Kenwood SW300 Home Sub?
The cuurent speaker has damaged foam around it. The # on the bottom of speaker is Kenwood T10-0640-15.It always had good sound and box is in great condition so I just wanted to replace the speaker.
It should work well in your Kenwood enclosure which looks to be about 1.2 cuft internal volume and either a 2.5" or 3" port about 10" or 12" long (These are all estimates from pictures I can find of it) which puts the tuning in the mid thirties.In this enclosure the dayton woofer will have a slight peak at about 70hz and start to fall from there with the f3 at about 40hz, so with some room gain you should be looking at extension into the thirties. Some modifications "might" be needed to get it to fit in the original cutout.
Date published: 2011-10-15
Is the RMS power rating for this driver for one voice coil, or the two wired together?
The RMS value usually refers to the total power handling of the driver. So yes, 80w = 40W per voice-coil. IN the Specificaqtion notes, it notes "All specifications are with voice coils connected in parallel."
Date published: 2012-03-20
What diameter and length port should I use for a 1 cubic foot enclosure with this driver?
1 cubic foot is a little on the small side for a ported enclosure this driver. You will see a peak at 80hz with a falling response from there, extension into the mid 40's.2" diameter 8" long (smaller then I would recommend) or 2.5" by 13" long. These put tuning frequency right around 30hz.If you try to go with 3" or larger ports you'll have a hard time getting them to fit in the enclosure with their needed length.
Date published: 2012-06-08
If I wire in parallel, 4ohms load to the amp, series 16ohm load?, then how do I wire to get 8 ohms
The plate amp I have is rated 73 watts into 4 ohms and 100 watts into 8 ohms, the reverse of the usual (less power into higher higher impedance)
Unfortunately there is no way to wire both coils to 8 ohms. You can use one coil and leave the other open although this will change the specs of the driver. I would recommend wiring them in parallel to 4 ohms which will provide 3 dB more output anyway which will make up for the lack of power.
Date published: 2013-08-06
If two of these are to be used to net 8 ohms, is it better to wire the voice coils in series and the speakers in parallel or the other way?
If you wire the voice coils in parallel and the speakers in series you will lose both speakers if one goes out. If you wire the voice coils in series and the speakers in parallel you only lose one speaker if only one goes out. This would be the same configuration as a 4 x 10" guitar rig and seems to be the preferred method in pro audio. Otherwise, as has already been stated, there is no discernible difference.
Date published: 2013-02-07
What sized sealed box would be ideal?
Anywhere from .75 to 2 cuft should work well.
Date published: 2013-11-06