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Vintage Asylum Classic gear from yesteryear; vintage audio standing the test of time. |
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In Reply to: Yet another bose 901 post posted by zman on April 2, 2007 at 11:58:44:
The series IV was a ported system and so needs less bass boost than the earlier sealed ones. The EQ is designed specifically for the specific series of 901, so you need a series IV EQ. The bass end is the trick part. I'm pretty sure, it's a sixth order low end, with bass boost and a rolloff at specific frequencies. A graphic EQ and a subsonic filter can come close. Your SAE parametric might also work well.Comparing the DQ-10 and the 901 is really interesting. The reflected sound of the 901 gives a live quality, but it's not really clear, like being in a live performance but viewing it through a smoke filled room. The DQ-10 will be like looking at a perfectly focused Kodacolor print. You know it's not live, but it's exquisitely clear.
The 901's (all versions) need a lot of clear open wall space for the rear reflective drivers to work properly. Most real rooms have doors and furniture that subvert the reflective sound. A way around that is to use slings and hang them from the ceiling so they are above the furniture and have access to a clear wall. You really need about 3' of clear wall space on both sides of each speaker.
You also need a good 100 watts per channel minimum because of the bass and treble boost. 200-250 is better.
If you get them set up well, the impression of a live performance is quite profound and they do best on large scale classical works that are miked with a more distant perspective.
When I had the room to place them, I didn't have the $$$. Now I have the $$$, but no place to put them.
As an alternative to high end boost, consider blending in a good dome tweeter (actually 3 good dome tweeters per channel).
These are not high definition speakers. The theory was to duplicate the percentage of direct and reflected sound in a large concert hall, and Bose made his measurements at Symphony Hall in Boston. Bose also showed in the 60's that a collection of equalized full range speakers could perfectly reproduce an impulse sound. The 901 is the commercialization of that research work. One of the key differences between a pair of 901's in your living room and Symphony hall is that the reflected sound is delayed a lot more than in your home. You need DSP to do that in your home.
It's a noble adventure. Look at it as a learning experience. Go for it!
Jerry
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Follow Ups
- Re: Yet another bose 901 post - Bold Eagle 16:34:06 04/02/07 (6)
- I've gotten into arguments with the total anti-bose crowd - DavidLD 04:52:11 04/03/07 (2)
- Re: I've gotten into arguments with the total anti-bose crowd - Bold Eagle 07:27:56 04/03/07 (1)
- Re: I've gotten into arguments with the total anti-bose crowd - pete the bully 21:36:51 04/03/07 (0)
- Amar did get one thing right - E-Stat 19:29:23 04/02/07 (2)
- And as planar owners can attest- using the wall behind the speaker to delay the sound just enough before it reaches our - Joe M 08:43:24 04/03/07 (1)
- Indeed - E-Stat 13:43:14 04/03/07 (0)
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