Bose 901 series 1 driver

The total radiating area of the drivers in each bose 901 is roughly equal to that of a inchdiameter speaker, but the highfrequency performance of the small drivers is far superior to that of a large singlecone driver of equivalent area. Grs rsb9011 replacement speaker driver for bose 901 412 1. The question you are asking will result in widely varied opinions, so ill toss in my own opinion. Resurrounding drivers may help those drivers that have scraping vc but the stuck ones may be problematic. A common modification of the 901 s was to add a super tweeter. Im not a bose basher by any means but recently i got my hands on a pair of 50 year old 901, series 1. I refoamed all 18 of series 3 bose 901 drivers a while back. These electrolytic capacitors dry out over time and must be replaced. The eq901biii features dual equalization curves, normal and enhanced, which will accommodate your series iii depending on personal preference. That eq puts some sort of boost across the board prior to amplification. Used the matching eq unit through my tape loop and adjusted to taste. Grs rsb901 1 replacement speaker driver for bose 901 4 1 2. If you cant find the bose eq for your series 901 then get any graphic equalizer and adjust the sound to your taste.

Located maintaining the distances specified by bose, and hanging on the ceiling, the power of the bose 901 series 4 is almost unlimited. I found them to sound better in the reversed position with the 8 drivers facing forward and the 9th facing the wall. A bunch of us went in together and bought quite a few cases of raw drivers from a company called cts in paducha ky sp. My point was, those 901 s are not like any other speaker even if compared to other bose lines such as the 301s. Bose 901 speaker placement page 2 steve hoffman music. The bose 901 has created more of a stir in audio circles than any other loudspeaker we can think of, with the possible exception of the original acoustic research system. Bose 901 series vi speakers and series vi active equalizer work with your stereo components to produce a superb music system. Bose 901 speaker parts woofers, grills, cabinet series vi.

The use of 901 series vi speakers without the 901 series vi active equalizer will result in improper performance. All bose products come with a limited warranty based on your product and region. The eq901biii is a direct replacement for existing bose 901 series iii equalizers providing improved clarity, imaging and range. Owners manual, installating and operation manual, assembly and mounting instructions. Bose 901 speaker woofer refoam sicke reparieren refoaming duration. Selling some drivers woofers from a single bose 901 series vi. Bose 901 iii speaker driver replacement to cure speaker foam rot. Helps hold the new unglued surround in place so that the voice coil can be properly centered when the surrounds are drying.

The 901s big sound impressed the hell out of early stereo buyers, and they sold like hotcakes. Balance ot reflected and direct sound 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. Im very interested in the bose 901s for a variety of reasons, but im having a very hard time finding a comprehensive source of 901 information. We will show you how to remove the grills, clean the speakers, and replace the foam. Replacement drivers for bose 901 series iii to vi track page views withauctivas free counter 174099002273.

Honestly bose hasnt built a musical speaker since they dropped the 901 vi 3 years ago. Bose 901 series i and ii speakers 3in 1 owners user and service manuals. 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. Ebay offers a capacitor replacement kit for your bose 901 eq. Replacement full range driver for bose 901 series v. Replacement full range for bose 901 series 3 thru 7, 1 ohm driver, 3 bolt plastic frame. Just about everything they have sold since the seventies except the 901 and the 501. Anybody have any experience with bose 901 series i. Plus, find details on returns, exchanges, shipping, and delivery. Bose 901 speaker parts woofers, grills, cabinet series. Receiver for old pair bose 901 audioholics home theater. This driver has an impedance of 1 ohm, and should be used only to replace the 4 1 2 driver in the bose 901 series iii or later and bose 802 loudspeakers. View and download bose 901 series ii owners manual online.

Speakers original replacement woofer s drivers speakers. I believe these parts will fit other series, but please research before purchase. 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. This item grs rsb901 1 replacement speaker driver for bose 901 4 1 2 1 ohm. Bose 901 speaker foam edge replacement and repair youtube. Oh, and rather than stack the 901 s, id place one pair on the floor with the bose 901 stands and hang the other pair from the ceiling. The bose 901 enclosures house nine small, specially designed drivers that have 4inch cones and powerful magnetic structures. Inexpensive and a must to do, especially on your series iiiiv. I have them run with their own equalizer and a 400 watts rms stereo technics sa700 power receiver. Each of the 4 1 2inch drivers can be viewed as a miniature woofer rather than a large tweeter.

Driver diameter metric 114 mm driver technology design. Jul 17, 2012 in this video, we go into detail on the correct installation of new surrounds for the bose 901 speaker system. 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. And by the time bose got to series iv, there was no resemblence to the speakers i owned. Somewhere in the eighties, bose kind of split into three divisions. Bose 901 speaker driver repair surround tool how to youtube. Bose oem original speaker driver for bose 901 series 1 and 2 speaker drivers. And so the story goes in the wubbulous world of highend audio. You can use the bose without the eq but they wont sound as they are supposed to. Do not attempt to replace the 901 eq with any graphic or parametric eq. Are the bose 901 speakers still considered among the best. Grab a backup while available at this price 2745195841.

Does not replace older bose style with 4 hole metal frame. 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. They hold the 38 front poly tweeter just above the front driver. Back in 1974 i was working at bell labs in holmdel nj and the fad was to build bose 901 series 1 clones using drivers that were reportedly the same as bose used. Replacement full range driver for bose 901 series v speaker.

Oct 24, 2011 bose 901 series 3 repair and refoaming duration. Other than using a green sharpie to get better cd sound, or that guy that calls you on the phone and osmotically makes your system sound better, no greater myth exists in audio today than that of the bose 901 speakers. If the front had a bunch of drivers and the rear sides had only one driver, that might be better. In audiophile circles bose is usually a punch line to a joke, or even seen as the great corporate evil of audio. Every driver is hand checked and tested, based on a 2 db window. I own a pair of bose 901 series 4 speakers since 1979. Because the bose 901 makes use of nine fullrange drivers, it takes advantage of an inline equalizer to make the speakers sound the way they are intended. You must have a bose 901 active equalizer for a complete 901 speaker system. 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. My bose 901 look exactly like yours except the grill cloth on the front is dark green, almost black. Bose 901 series iii made in the early 70s, these cabinets are comprised of a fullwood enclosure with reflective technology to imitate music being.

In this context, if i listened only to trumpet, 901 s would suck and if i listened only to cello, the 901 s would rock. Anybody have any experience with bose 901 series i speakers. The bose 901 changed the way we think about sound reproduction and that, my friends, is a very good thing. When you walk into a bose dealership or bose store, dont let them use those cds that are produced by bose. Theyre the 901 series i speakers the original bose speakers that actually made the company famous. Speaker repair foam edge repair kit for bose 901 and bose 802 speakers. The bose 901 series i and series ii equalizers are interchangeable as they both produce the same frequency response curves, but if you really cant come up with one, it is possible to use two equalizers daisychained together. Vind bose 901 luidsprekers op marktplaats mei 2020.

The equalizer is a necessary component of the bose 901 speaker system, bose s highestend hifi equipment. Had a set of bose 901 series vi way back in the day. Customs services and international tracking provided. My new old bose 901 series i attention soundminded. 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 901 series iii directreflecting speaker system. Eq901biii replacement upgrade for bose 901 i ii equalizers. 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. Most of the people i know who bought used 901 s bought them for the retro looking enclosure with the intention of replacing everything inside with b. There is also a rectangular black plastic plate hanging directly below the top plate from a pair of small invisible l brackets. Once you learned the trick i used cloth pins for centering the vc, 4 for each driver it was relatively straightforward. This drivers parameters were carefully optimized to match the performance of the classic bose 901 loudspeaker systems. Depending on ones viewpoint, the bose 901 speaker system might be considered a revolutionary approach to sound reproduction, or simply a workable combination of wellestablished and sometimes deprecated techniques. The two most common methods are described in this guide. 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. The use of graphic or parametric equalizers, instead of the bose 901 equalizer, will result in unsatisfactory performance. They fit the description of noname 4 drivers with black cones.

But i like it but these plastic boxes sound exactly that. The series ii active equalizer produces the same curve as the series i, just with a further optimized circuit with a handful of component changes, and could also be used with any series i or series ii speaker system. Boss audio systems brs40 50 watt, 4 inch, full range, replacement car speaker sold individually. Bose 901 manuals manuals and user guides for bose 901. The center channel is 1972 series 2, and the surrounds are 1974 bose 901 series 2 walnut finish continentals. 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. 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. Traditionalists, before you cry foul, think of the popularity of dspbased speakers these days. Track your order or get updates on service requests.

I know without the eq the 901 sound like an am radio. The active equalizer is an integral part of the system and may be connected in a variety of ways, depending on the components you have. Those 4 full range drivers just cant compete with a dedicated tweeter. In this video, we go into detail on the correct installation of new surrounds for the bose 901 speaker system. The acoustimass series is especially crappy cheap drivers, cheap cabinetry, high priced and mediocre sound. The bose 901 active equalizer is a highly sophisticated electronic console containing ten. I make fun of the 901, something i shouldnt do because that speaker was in every sense of the word a seminal product. Owners manual, installating and operation manual, assembly and. Speaker parts, cones, speaker bose foam edges, woofer repair. But i can share some things i learned about the bose 901 speaker from the man himself, because i took professor bose s acoustics class when i was undergraduate, and we got to ask him lots of questions. The next most obvious thing about the 901 s is poor treble extension. Compatibility with other bose loudspeaker models or automotive audio systems has not been verified. Quite a different story with the subsequent versions of the 901.

Identifying your bose 901 series 1 equalizer vintage hi. Grs rsb9011 replacement speaker driver for bose 901 412 1 ohm. This item grs rsb901 1 replacement speaker driver for bose 901 4 1 2 1 ohm boss audio systems brs40 50 watt, 4 inch, full range, replacement car speaker sold individually jbl gto629 premium 6. Bose 901 series vi speakers overview and full product specs on cnet. Bose direct reflecting speaker system owners manual. I recently purchased a sansui 9090db in near mint condition.