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In Reply to: Re: Epiphany posted by Bold Eagle on April 20, 2007 at 18:04:48:
better on the bozaks than they did on my old set up. Stereo is a little more problematic until I get the cabinets repaired and properly placed. Did you ever try bozaks off the ground to mimic what your old music professor had done? Currently the tweeters are way below ear level. Thanks Norm
Follow Ups:
This was a raised area big enough for a baby grand piano, the sound system and the professor, so the bass was still reproduced as if the 302 was sitting on the floor, but relative to the students, it was elevated about 8-9".My 401's had the two tweeters mounted near the top of the cabinet, a good bit higher than the 302, but they were Z tweeters. Back when the class was held, they were the original paper cone tweets, but still mounted across the woofer frame.
The 401 cabinet was way too small at 2.3 cu. ft. for the Bozak 12" and the bass dropped off a cliff below 60 Hz. The 401 was an attempt to compete with the Acoustic Suspension "bookshelf" speakers, but despite a really nice midrange, they didn't impress. The crossover was a mess and used polar electrolytic caps. I redid that with film caps and added a super tweeter, but the bass was still lacking. I eventually fitted a Speakerlab W1208R woofer, which worked a lot better. When one of the mids developed a rubbing voice coil I threw in the towel and installed a Peerless 2" soft dome mid (fit perfectly in the midrange cutout) and a Peerless 1" soft dome to close off the hole for the tweeters. That actually worked fairly well for a couple of years.
Do you have plans for that speaker? Sounds like it could be an interesting DIY project.
Charles,Sorry, no I didn't keep the schematic and the drivers are all discontinued. It was all first order in the crossover and sounded pretty good, but the JBL L-110's I bought used were much better.
A lot of speakers are better up a bit. In college, my roommate had Altec sitting top of a plank on a couple CME blocks, roughly 18" high and it was great. Raised the image and tightened up the bass.
-Rod
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