The bose 901 active equalizer is an integral part of the 901 directreflecting speaker system allowing for proper performance and sound. Grs rsb9011 replacement speaker driver for bose 901 412 1. Matrix enclosures house 9 fullrange drivers with helicallywound aluminum. Aug 28, 2016 bose 901 iii speaker driver replacement to cure speaker foam rot.
Bose 901 original used driver for serie ii iiiiv sicken shop. The bose 901 loudspeaker is perhaps one of the most famous speakers in the world. Find product info, customer service help, and contact information from bose support. Bose 901 series vi speakers overview and full product specs on cnet. Bose 901 speaker foam edge replacement and repair youtube. Years after my warranty expired bose offered me a pair of series 6 for cost because the foam began to crack on the series ii. Make offer 2 ea bosespeaker wire adapter for bose5. The series i and ii were a sealed enclosure hence needing lots of power if you like your music loud at all to get the most out of them as you are driving 10 individual speakers. Do not attempt to replace the 901 eq with any graphic or parametric eq.
The bose 901 series ill is designed to use your listening room walls to simulate the reflective properties of the much larger stage wall found behind the instruments of a live per formance the901 series ill uses nine drivers, eight directed towards the back wall, and one driver directed into the lis. Choose your region or country to get help with your bose products. The bose 901 speakers represent a fundamental advance in realistic home music reproduc tion. The bose 901 was the result of amar boses masters thesis at mit, where he measured and studied the ratio of direct vs. But i can share some things i learned about the bose 901 speaker from the man himself, because i took professor boses acoustics class when i was undergraduate, and we got to ask him lots of questions. Bose phd and contains some of the most innovative and clever out of the box thinking of any product of its type ever manufactured, presently available today.
When you walk into a bose dealership or bose store, dont let them use those cds that are produced by bose. I bought my first pair series ivs in 1977 but sold them a couple of years later when i moved to a house with no suitable room for them. Save bose 901 series ii to get email alerts and updates on your ebay feed. The use of 901 series vi speakers without the 901 series vi active equalizer will result in improper performance. I have a pair of bose 901 series 3 speakers which i refoamed in my living room setup. Jan 04, 2010 i just have a 901 series iv and all connected in series and using the equalizer series vi which sounds is great compared to my series i and series ii. This bose 901 series ii equalizer returned to its home and hifi, and after this complete overhaul, will continue to serve faithfully producing beautiful sound for many years to come. Back to the series ii 901 bose the classic speaker pages. Original bose 901 5 inch driver pair also used in avid and many other speakers. Further equalization is needed to overcome the broad 8 db rise centered in my pair at around 250 hz and the excessive low bass falloff of 6 db per octave below about 90 hz. Speaker parts, cones, speaker bose foam edges, woofer repair. I have refoamed them and when i play them, they rattle. This driver has an impedance of 1 ohm, and should be used only to replace the 412 driver in the bose 901 series iii or later and bose 802 loudspeakers. Bose 901 speaker placement page 2 steve hoffman music.
These electrolytic capacitors dry out over time and must be replaced. Vc 09 high quality speaker voice coil,28 mm 8 ohm 0,52 6,88. This hifi speakers set in performance, design and price. Stereo receivers for bose 901 directreflecting speaker.
You must have a bose 901 active equalizer for a complete 901 speaker system. Even though paper is a good material to use for speaker drivers, and plenty of audiophile companies. The iv was the only generation with an extra connection for the bose spatial control receiver, which permitted the user to attenuate either the inner or outer rear banks, to widen or narrow the image. Nonbose replacements for series 3,4,5,6 are a definite nono as the bose have aluminu. Inexpensive and a must to do, especially on your series iiiiv.
Are the bose 901 speakers still considered among the best. The second involves the sooloos music server feeding wadias new 121. Bose 901 driver question bose the classic speaker pages. Suffice it to say that the series i and the series ii are basically the same speeaker, and the series iii, iv, v and vi are basically alike. Our best inceiling speakers, soundtouch compatible. The center channel is 1972 series 2, and the surrounds are 1974 bose 901 series 2 walnut finish continentals. Quite a different story with the subsequent versions of the 901. Bose 901 series vi version 2 limited edition modern kh. I owned the 901 series ii back in the seventies and eighties. In audiophile circles bose is usually a punch line to a joke, or even seen as the great corporate evil of audio. These bose 901 series ii speakers are in need of some repair and restoration. Bose 901 drivers are awkward to redo the surrounds on and get the voice.
Most of the people i know who bought used 901s bought them for the retro. Not really a bose fan, but definitely a 901 fan since i first heard them at reeds stereo in springfield, mo, in the midseventies. Vtg pr early bose 901 series ii speakers nice tested walnut cabinets non ported. Superior allweather speakers paired with soundtouch amp.
Bose 901 series ii high quality speaker foam rings special offer 18 x kit 114. Starting with series iii and onward they were ported and the sound was downhill from there on. The use of graphic or parametric equalizers, instead of the bose 901 equalizer, will result in unsatisfactory performance. Every driver is hand checked and tested, based on a 2 db window. Bose 901 series ii repair and restoration stereo speakers.
Ill break it down the performance of the speaker into a few standard categories and how they. Bose 901 series ii almost identical to the series 1, the only differences are the walnut trim in lieu of the cloth grill and the metal bose logo on the lowerright corner of the speakers front. Replacement full range for bose 901 series 3 thru 7, 1 ohm driver, 3 bolt plastic frame does not replace older bose style with 4 hole metal frame. Six days later, the 901s arrive on my doorstep, safe and sound. I just have a 901 series iv and all connected in series and using the equalizer series vi which sounds is great compared to my series i and series ii. Speaker repair foam edge repair kit for bose 901 and bose 802 speakers. Its a great time to upgrade your home theater system with the largest selection at. Compatibility with other bose loudspeaker models or automotive audio systems has not been verified. I bought my first pair series ivs in 1977 but sold them a couple of years.
A home speaker, a portable speaker, and a voicecontrolled speaker, all in one. At first i thought i did a poor foam job and that was the cause, so i replaced the driver that i heard the rattle from and it was the same. They are curious creatures, they are exquisitely sensitive to placement. View and download bose 901 series ii owners manual online. Jun 30, 2015 years after my warranty expired bose offered me a pair of series 6 for cost because the foam began to crack on the series ii.
Bose 901 lautsprecher eine hifi legende uptodate historie alle. Jul 17, 2012 bose 901 series 3 repair and refoaming duration. Owners manual bose 901 series ii owners manual 17 pages. Bose 901 technicalmodifications the klipsch audio community. Stereo receivers for bose 901 directreflecting speaker system. What does paul think about its performance and along the way we get treated to another story. Much like bigfoot, have you even seen a pair of bose 901 speakers or, better yet, heard them.
A series ii equalizer or, to the best of my knowledge, a series iii would work. Bose 901 series iii made in the early 70s, these cabinets are comprised of a fullwood enclosure with reflective technology to imitate music being. The cloth is not in great shape on these bose 901 series ii speakers and the wood cases have a few nicks and scratches. They are inquestionably one of the finer looking speakers availible. If the front had a bunch of drivers and the rear sides had only one driver, that might be better. Grab a backup while available at this price 2745195841. I know without the eq the 901 sound like an am radio.
Personally, ive been a bose 901 fan for about a day short of forever. Bose 901iii speaker driver replacement to cure speaker foam rot. We have 1 bose 901 series ii manual available for free pdf download. Makes restoring the drivers on the 901 sooo much easier and you end.
You might want to be sure that you have adequate amplifier power, but this newer series is much easier on amplifiers than the old original 901 and the series ii 901. Can someone give me advice with my bose 901 speakers. Do the new bose 35 series ii headphones sound as good as they say they do. Bose 901 speaker driver repair surround tool how to youtube. The bose 901 series ii speakers rarely have an issue with rotting foam surrounds and this pairs drivers look. Speakers original replacement woofer s drivers speakers. How to repair and refoam a speaker surround duration. A good 60100 wattsperchannel would nevertheless be good to have with any 901 if you can do it, but the speakers will give satisfactory results with less power, of course, but at. Oem bose 901 series ii 103342 fullrange speaker driver with screws. To reproduce the same bass loudness of ar9 it would take at least 3 to 4 pairs of original or series ii bose 901s and at least 600 to watts per channel of amplifier power. Oem bose 901 series ii 103342 fullrange speaker driver with.
This is likely better than possible when new, as all of the replaced resistors used were specified to 1% tolerance, where bose originally used parts with 51020% tolerance ranges. The use of graphic or parametric equalizers, instead of the bose 901. Couldnt believe how bad they were compared to the original 901 s and the series ii. Over the past several years, manufacturers of receivers have made fewer products compatible with external equalizers including the bose 901 equalizer. Bose 901 series vi speakers and eq 10 years old one owner. Find great deals on ebay for bose 901 and bose 901 speakers. Ebay offers a capacitor replacement kit for your bose 901 eq. Dec 16, 2008 you might want to be sure that you have adequate amplifier power, but this newer series is much easier on amplifiers than the old original 901 and the series ii 901. Bose direct reflecting speaker system owners manual. Perhaps the most successful, and prolific loudspeaker design ever produced. This bose 901 series ii active equalizer has been fully reconditioned with upgraded parts, and fully tested and verified. I was a sales guy at a bose dealer in 19756 and i read up on all boses literature about the 901s theory of ops and placement. As you have noted the surrounds on the 901 drivers are. If you need your bose 901 series i or series ii, series iii, or series iv active equalizer repaired, please contact me.
Soundtouch outdoor wireless system with 251 speakers. You may have some luck with a graphic or parametric eq but according to bose the 901 active eq is a dedicated device, specifically designed for the 901 speakers. For deckspatios, weatherproof, soundtouch compatible. And by the time bose got to series iv, there was no resemblence to the speakers i owned. Oh, and rather than stack the 901s, id place one pair on the floor with the bose 901 stands and hang the other pair from the ceiling. The 901 series vi directreflecting flagship speaker system from bose provide. Bose 901 speaker restoration published on january 4, 2010 in electronics and repairs. I took the offer as it was less money than replacing all 18 drivers. Lacking of bass but i just add a powered sub to match all the instruments and melodies.
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