Question about Bose 901 EQ1915 Home Equalizer
No. You may think you're doing it with the first solution, but the EQ curves introduced by the Bose Active EQ are extremely steep at the extremes. One could just as easily advise that the RIAA phono EQ curve (look it up) could be simulated through an external EQ, but why would you want to try? The best you would come up with is a ballpark match. Don't we really strive for accuracy?
Bose 901's employ 9 full-range, 4"-diameter drivers in each cabinet, hence there are no tweeters, no woofers and no internal crossovers. You can probably imagine how much EQ it would take to make a full-range driver, with its inherent limited voice coil travel and steep roll-off at the extremes, respond as if it was, say a 12-inch woofer, or a tiny dome super-tweeter.
Every series of Bose 901 that came out had its own specific matched series of Active EQ to compensate electronically for the natural limitations of the individual drivers. I imagine there were a lot of major simlarities from one to the next and that you would not be too far off the mark to mix a Series-IV EQ, for example, with a Series-V speaker pair, but I really doubt you're going to dial in the same curves with a manually adjusted equalizer without some specs as a guide.
Try to find the correct Active EQ on eBay. You’ll be much happier with the results.
Posted on Nov 30, 2009
The original eq provided a bass boost about 120hz treble boost starting at about 5k. you could use a half octave equaliser to the same effect. like a big fat loudness control :)
Posted on Dec 14, 2007
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