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#42
Posted to rec.audio.tech
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Bose 802 with even less lows than normal
"GregS" wrote in message ... In article , "Mr.T" MrT@home wrote: "GregS" wrote in message ... There should be 8 separate enclosures within the cabnet, and each of 4 drivers share a common port, so its not a total air leak. Can you please explain how 4 drivers in isolated enclosures can share a common port? AFAIK none of the drivers are isolated. I never visited the insides of the 802, but thats the way the 901 is. There are three chambers in the 901 III up. You see only two ports in the 802 right? greg The 901 has 9 drive units, 8 at the back and 1 at the front. In other words, it is used the other way round to the 802 which has the 8 drive units facing the audience and two ports at the back. The 901 is a sealed box, with no ports, and is intended to provide most of its output reflected off the back walls, and only a small amount directed at the listener. The 802 is a PA 'speaker, and in my view, quite a good one for speech and individual instruments whilst the 901 was a so-called hi-fi 'speaker which singularly failed, given that stereo doesn't work if the sound is scattered as the 901 did. S. -- http://audiopages.googlepages.com |
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#43
Posted to rec.audio.tech
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Bose 802 with even less lows than normal
"Serge Auckland" wrote in message ... "GregS" wrote in message ... In article , "Mr.T" MrT@home wrote: "GregS" wrote in message .. . There should be 8 separate enclosures within the cabnet, and each of 4 drivers share a common port, so its not a total air leak. Can you please explain how 4 drivers in isolated enclosures can share a common port? AFAIK none of the drivers are isolated. I never visited the insides of the 802, but thats the way the 901 is. There are three chambers in the 901 III up. You see only two ports in the 802 right? greg The 901 has 9 drive units, 8 at the back and 1 at the front. In other words, it is used the other way round to the 802 which has the 8 drive units facing the audience and two ports at the back. The 901 is a sealed box, with no ports, and is intended to provide most of its output reflected off the back walls, and only a small amount directed at the listener. The 802 is a PA 'speaker, and in my view, quite a good one for speech and individual instruments whilst the 901 was a so-called hi-fi 'speaker which singularly failed, given that stereo doesn't work if the sound is scattered as the 901 did. S. Actually, I may be wrong on the sealed box aspect of the 901, as the current pictures do show a port. I don't remember there being one on older 901s, but again I could be wrong on this, memory not being what it was. S. http://audiopages.googlepages.com -- http://audiopages.googlepages.com |
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#44
Posted to rec.audio.tech
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Bose 802 with even less lows than normal
In article , "Serge Auckland" wrote:
"GregS" wrote in message ... In article , "Mr.T" MrT@home wrote: "GregS" wrote in message .. . There should be 8 separate enclosures within the cabnet, and each of 4 drivers share a common port, so its not a total air leak. Can you please explain how 4 drivers in isolated enclosures can share a common port? AFAIK none of the drivers are isolated. I never visited the insides of the 802, but thats the way the 901 is. There are three chambers in the 901 III up. You see only two ports in the 802 right? greg The 901 has 9 drive units, 8 at the back and 1 at the front. In other words, it is used the other way round to the 802 which has the 8 drive units facing the audience and two ports at the back. The 901 is a sealed box, with no ports, and is intended to provide most of its output reflected off the back walls, and only a small amount directed at the listener. The 802 is a PA 'speaker, and in my view, quite a good one for speech and individual instruments whilst the 901 was a so-called hi-fi 'speaker which singularly failed, given that stereo doesn't work if the sound is scattered as the 901 did. The 901 series I and II are sealed. Each used different drivers. The orginal used a CTS driver, which was also used in the pro audio "cubes" Series III moved to the ported enclosure. It has used the same low ohms aluminum coiled, higher QTS driver ever since, as far as I know. The 901 series I and II were filled tightly with fiberglass, and the newer editions use nothing, as do most cheap computer speakers. Series III started to have wiring split so the sound could be channeled either more to the left or more to the right. There was also a receiver that took comtrol.Later, the option was removed. To get decent bass from the 18 db amplified contour, a 300 watt amp was good to have, but the higher series models were slightly more efficient. greg |
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#45
Posted to rec.audio.tech
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Bose 802 with even less lows than normal
On Fri, 01 Jun 2007 12:16:35 GMT, (GregS) wrote:
I never visited the insides of the 802, but thats the way the 901 is. There are three chambers in the 901 III up. You see only two ports in the 802 right? Completely different animals aren't they? The 802 is a competent PA speaker. 901 is a gimmicky hi-fi speaker. |
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#46
Posted to rec.audio.tech
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Bose 802 with even less lows than normal
In article , (GregS) wrote:
In article , "Serge Auckland" wrote: "GregS" wrote in message ... In article , "Mr.T" MrT@home wrote: "GregS" wrote in message . .. There should be 8 separate enclosures within the cabnet, and each of 4 drivers share a common port, so its not a total air leak. Can you please explain how 4 drivers in isolated enclosures can share a common port? AFAIK none of the drivers are isolated. I never visited the insides of the 802, but thats the way the 901 is. There are three chambers in the 901 III up. You see only two ports in the 802 right? greg The 901 has 9 drive units, 8 at the back and 1 at the front. In other words, it is used the other way round to the 802 which has the 8 drive units facing the audience and two ports at the back. The 901 is a sealed box, with no ports, and is intended to provide most of its output reflected off the back walls, and only a small amount directed at the listener. The 802 is a PA 'speaker, and in my view, quite a good one for speech and individual instruments whilst the 901 was a so-called hi-fi 'speaker which singularly failed, given that stereo doesn't work if the sound is scattered as the 901 did. The 901 series I and II are sealed. Each used different drivers. The orginal used a CTS driver, which was also used in the pro audio "cubes" Series III moved to the ported enclosure. It has used the same low ohms aluminum coiled, higher QTS driver ever since, as far as I know. The 901 series I and II were filled tightly with fiberglass, and the newer editions use nothing, as do most cheap computer speakers. Series III started to have wiring split so the sound could be channeled either more to the left or more to the right. There was also a receiver that took comtrol.Later, the option was removed. To get decent bass from the 18 db amplified contour, a 300 watt amp was good to have, but the higher series models were slightly more efficient. I think this was the orginal Bose speaker...... http://www.bose-pro.ru/901_007.jpg I found this interesting page but I can't read it. The orginal driver is shown on the bottom, a bit overdriven. http://www.matthias-stark.de/html/restore.html The 802 was only equalized down to about 50 Hz vs the 30 Hz of the 901. greg |
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#47
Posted to rec.audio.tech
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Bose 802 with even less lows than normal
In article , (GregS) wrote:
In article , (GregS) wrote: In article , "Serge Auckland" wrote: "GregS" wrote in message .. . In article , "Mr.T" MrT@home wrote: "GregS" wrote in message .. . There should be 8 separate enclosures within the cabnet, and each of 4 drivers share a common port, so its not a total air leak. Can you please explain how 4 drivers in isolated enclosures can share a common port? AFAIK none of the drivers are isolated. I never visited the insides of the 802, but thats the way the 901 is. There are three chambers in the 901 III up. You see only two ports in the 802 right? greg The 901 has 9 drive units, 8 at the back and 1 at the front. In other words, it is used the other way round to the 802 which has the 8 drive units facing the audience and two ports at the back. The 901 is a sealed box, with no ports, and is intended to provide most of its output reflected off the back walls, and only a small amount directed at the listener. The 802 is a PA 'speaker, and in my view, quite a good one for speech and individual instruments whilst the 901 was a so-called hi-fi 'speaker which singularly failed, given that stereo doesn't work if the sound is scattered as the 901 did. The 901 series I and II are sealed. Each used different drivers. The orginal used a CTS driver, which was also used in the pro audio "cubes" Series III moved to the ported enclosure. It has used the same low ohms aluminum coiled, higher QTS driver ever since, as far as I know. The 901 series I and II were filled tightly with fiberglass, and the newer editions use nothing, as do most cheap computer speakers. Series III started to have wiring split so the sound could be channeled either more to the left or more to the right. There was also a receiver that took comtrol.Later, the option was removed. To get decent bass from the 18 db amplified contour, a 300 watt amp was good to have, but the higher series models were slightly more efficient. I think this was the orginal Bose speaker...... http://www.bose-pro.ru/901_007.jpg I goofed. Here it is... http://www.bose-export.com/philosophy/images/005.jpg I found this interesting page but I can't read it. The orginal driver is shown on the bottom, a bit overdriven. http://www.matthias-stark.de/html/restore.html The 802 was only equalized down to about 50 Hz vs the 30 Hz of the 901. greg |
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#48
Posted to rec.audio.tech
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Bose 802 with even less lows than normal
On Fri, 01 Jun 2007 12:24:30 GMT, GregS wrote:
In article , (GregS) wrote: In article , "Mr.T" MrT@home wrote: "GregS" wrote in message .. . There should be 8 separate enclosures within the cabnet, and each of 4 drivers share a common port, so its not a total air leak. Can you please explain how 4 drivers in isolated enclosures can share a common port? AFAIK none of the drivers are isolated. I never visited the insides of the 802, but thats the way the 901 is. There are three chambers in the 901 III up. You see only two ports in the 802 right? Correction. there are three chambers in the 901 and three ports. And one reproduced frequency. |
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#49
Posted to rec.audio.tech
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Bose 802 with even less lows than normal
"GregS" wrote in message ... There should be 8 separate enclosures within the cabnet, and each of 4 drivers share a common port, so its not a total air leak. Can you please explain how 4 drivers in isolated enclosures can share a common port? You take 4 drivers in isolated chambers and feed that into a common port. The port extends out from the chambers. Its easy to see in one of those clear promotional boxes. Your definition of "isolated" doesn't seem to match mine. If the air can flow between the drivers via the port, then as I said, one driver losing it's surround will affect all drivers air loading. MrT. |
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#50
Posted to rec.audio.tech
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Bose 802 with even less lows than normal
"Laurence Payne" lpayne1NOSPAM@dslDOTpipexDOTcom wrote in message news  The 802 is a competent PA speaker. That's very much a matter of opinion, and hugely depends on the venue and music content whether they are even vaguely acceptable. There are much better PA speakers for same or less money IMO. MrT. |
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