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8 Inch Subwoofer Project

About 20 years ago I bought two AR cabinets that were all scratched up for 25 cents each. The tweeters were still in their holes with rusty screws.

My Straight Pipes with Fostex 127e are great speakers! They have a natural midrange and sound balanced if a little forward. They are in my office flanking my bookcase and really don’t take up much room at all. But they lack bass.

I bought another subwoofer amp:

http://www.partsexpress.com/pe/pshowdetl.cfm?&DID=7&Partnumber=300-784

part number 300-784 from partsexpress.com. This amp looks good but when I shake it it makes noise like something's wobbling inside. Otherwise it's a lovely looking piece of gear and subjectively much more powerful than the $25 twenty five watt amp they also sell.... which I would not buy again.

I also found an old Precision woofer also from about 20 years ago that I bought from Zalytron. The surrounds were almost completely unglued from the poly cone so I reattached them with some rubber cement.

I sanded the real wood veneer to a smooth finish and filled the deep scratches with dark wood putty and sanded again. Using dark Ebony stain from Minwax really deepened the color making it very difficult to see the repaired scratches. Three coats of hand rubbed poly shined these up beautifully and the results are just incredible!

I found a few pieces of discarded birch ply along side a new floral shop that was opening down the block. The wood said ‘no good’ in pencil on it so I knew it was scrap. Since it’s polite to ask I went to knock on the door only to find two people making out behind what seemed to be a new birch ply countertop. Leaving them to do their thing… I took the wood.

After cutting the hole I sanded and stained the front baffle with Red Oak Minwax stain. The same stains were also used on the Straight Pipes to keep a family resemblance of sorts.

The old woofer, old cabinet and new sub amp all work perfectly together and add the right amount of bass to an already very nice speaker system. Still not super low bass but satisfying. Tuning to taste and running off the Sonic Impact amp thru my IBM PC provides amazing sound all day long in my office. Quietly during the day but when everyone goes home, I kick off my shoes, put my feet on the desk and simply enjoy!

Godzilla