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Old 16th January 2013, 07:56 PM   #31
Pallas is offline Pallas  Pakistan
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Quote:
Originally Posted by bear View Post
Pallas,

You use 901s or 601s?
God no.

For mains, I would and do use much better types of designs. Specifically, concentric drivers with additional woofers to reduce midrange cone/waveguide movement.

These kinds of designs do strike me as potentially useful for surround/ambiance channels in a multichannel system geared to music, though.

But you didn't address my point, which is that the 601 seems like a more thoughtful approach than the 901 to the same basic design goals. It sprays stuff everywhere in a similar pattern (depending on how aimed) but has more meat on the bottom. So, besides the looks, why do people seeking to emulate Bose look to the 901 as their model, rather than the 601?
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Last edited by Pallas; 16th January 2013 at 07:59 PM.
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Old 16th January 2013, 08:06 PM   #32
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Originally Posted by Soldermizer View Post
OK I can resist the temptation no longer.

I just ordered a pair of the "Selenium ST200" tweeters from Parts Express ($50.03). In theory I have just increased the value of a pair of my 901's by about 20%. Ah, now to wait for the arrival of the package.

That is the 'glass half full' way of looking at it.
More realistically you merely reduced the value of the ST200s. ;-)
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Old 16th January 2013, 08:35 PM   #33
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...901 as their model, rather than the 601?
From their vintage looks, maybe because they don't touch the floor (with a similar design format/appearance of the GALE's GS401 Speaker) they float in mid air with the pattern of reflective dispersion of sound and technically because they didn't have that amount of problems with phase shift that afflict 2/3-Ways and plus they seem pretty radical with those 8 FR firing to the back and one to the front...
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Old 17th January 2013, 11:59 PM   #34
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Default more ideas for f**king with Bose 901's

Having all these items already on hand (except tweeters on order), it occurs to me:
What experimental options exist, having the following:

MiniDSP 2x4
(2) Behringer NU3000 amps
(6) Bose 901 series I or II (only 4 currently in use).

With the MiniDSP, the possibility exists to set an individual EQ for each speaker as well as a delay. This makes for an interesting possibility, using the above equipment to make a system with adjustable "first echo" from the front. I could put the "rear" pair in the usual place, whose output I would delay by adjustable amount, and the "front" pair would be turned around backwards (8 speakers to the front).

Anybody want to go completely "off the deep end"? How about 18 individual EQ/delay, amp lines and wire to each of the (original) 901 speakers?
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Old 21st January 2013, 06:09 AM   #35
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That could be done.

The 901s have been run facing forward... not as much fun.

You'd delay the fronts, not the rear facing ones... probably...

You can steer arrays with delay.

Best to use that much DSP capability for a line array, imo.
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Old 21st January 2013, 12:38 PM   #36
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901
They were so perfect, that they steal the show. (Never owned them... you must need some space ?!)
(pic from here Bose 901 Magic or Myth?)
Bose 901 Response Graph - AudioKarma.org
Bose 901 Speaker Restoration
Notice how drivers were same impedance as speaker on series II and III - series/parallel layout - and 1R on series VI/series layout, from this linked page.
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Last edited by Inductor; 21st January 2013 at 12:51 PM. Reason: crossover layout
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Old 21st January 2013, 07:00 PM   #37
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Originally Posted by Soldermizer View Post
Anybody want to go completely "off the deep end"? How about 18 individual EQ/delay, amp lines and wire to each of the (original) 901 speakers?
While you're at it, why not use a spring reverb to add more wash to the 901 direct/smeared sound ?
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Old 21st January 2013, 09:29 PM   #38
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Tape delay, or better still oil can.
Nah, bucket brigade IC.

I love the direct/smeared sound!!
Like I said, makes for a BIG sound, great on stuff like Led Zep!!
You do *need* a color organ with dichroic spots, and other performance enhancing substances...

Dunno whatcher complainin' about?
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Old 21st January 2013, 09:51 PM   #39
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Originally Posted by bear View Post
Tape delay, or better still oil can.
Nah, bucket brigade IC.

I love the direct/smeared sound!!
Like I said, makes for a BIG sound, great on stuff like Led Zep!!
You do *need* a color organ with dichroic spots, and other performance enhancing substances...

Dunno whatcher complainin' about?
I have sold both oil can echos I owned, but still own a bucket brigade IC echo and can do tape delay with two head cassette recorders.
None of those have the "reverb" sound needed for the direct/smeared sound.
Still have a reverb pan, the best part of the Bose 901 era was hearing pan reverbs clanging in cars equipped with them when you hit bumps.

Hmm, actually the performance enhancing substances were better than that memory, I think...
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Old 22nd January 2013, 04:19 AM   #40
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Originally Posted by bear View Post

They are Maximus drivers, designed by Ted Jordan.
Back then McGee Radio from the ...
i worked there for awhile.

(early 80's.)

they had the xovers as well.

didn' see the tweeters tho ...



i've only got 10 examples of these.

8 nib.



`````````````````````````````

audio magazine had an interview w/ted in the late 90's.

after he had designed the maximus system,

his superiors told him that he was to use the magnets

we now see on these drivers.

'as they had 10,000 of them.'

Last edited by tomtt; 22nd January 2013 at 04:25 AM.
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