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Author Topic: Bose 802 Drivers  (Read 3465 times)

Jon

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Bose 802 Drivers
« on: April 08, 2012, 05:59:56 PM »

Anyone know a good place to get replacement Bose 802 MKII drivers from (part number on the driver is 121777-2 but I think they are up to -5 now.
Preferably cheaper than retail as they are 70 each  :((

Ebay has some used ones atm, but it's a repair for a friend and I'd like to buy new/genuine.
Second hand will have to do though if I cant find a cheaper supplier.
Jon
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Tug-Kenny

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Re: Bose 802 Drivers
« Reply #1 on: April 08, 2012, 06:02:39 PM »


What's a Bose driver please ??


ken
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Jon

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Re: Bose 802 Drivers
« Reply #2 on: April 08, 2012, 06:13:56 PM »

Hi Ken, I'm after the individual speaker units from a Bose 802 speaker cabinet. it's a PA speaker thats quite common on portable disco, and fixed sound systems.
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Tug-Kenny

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Re: Bose 802 Drivers
« Reply #3 on: April 08, 2012, 06:39:58 PM »


Thank you for letting us know.

Upon looking at the 'old' speaker my thoughts were, you don't need to specify Bose as speakers are most common. I must have thrown dozens away during my career as a music technician. 
The only Specifications required are the wattage and the size of the cone. Is this data printed on the back ?

Hope this helps

ken
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Jon

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Re: Bose 802 Drivers
« Reply #4 on: April 08, 2012, 06:47:26 PM »

Hi Ken, I understand that in normal circumstances, in a single driver, non tuned enclosure the TheilleSmall parameters are not too important, unfortunatly due to this being a multi-driver, tuned enclosure, and Bose to boot, the drivers specific parameters are very very important. the unit is 1 ohm for a start, it works in a series parallel combination with 7 other drivers and a directivity control circuit wired between certain drivers in the matrix. So in this case I do need an exact replacement, hence the cost they are asking.
Jon
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Tug-Kenny

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Re: Bose 802 Drivers
« Reply #5 on: April 08, 2012, 07:02:27 PM »


Sort of a closed loop of fifty pound notes.   %)

Best of luck

ken

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Jon

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Re: Bose 802 Drivers
« Reply #6 on: April 08, 2012, 07:05:42 PM »

Thanks, Ken.
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malcolmfrary

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Re: Bose 802 Drivers
« Reply #7 on: April 08, 2012, 07:35:33 PM »

I usually find that putting the right phrase into google can turn up useful answers.
Possibly one such here -
http://www.justanswer.com/electronics/30ol1-one-bose-802-series-ii-speakers-no-bass.html

Scroll down the page.  The implication is that if Boses' quality control was as good as their marketing claims their research to be, there wouldn't be a problem.  I can't help wondering how badly cone control is affected by having all the coils in series since they are all effectively undamped.
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Jon

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Re: Bose 802 Drivers
« Reply #8 on: April 08, 2012, 07:49:58 PM »

I personally don't particularly like Bose, and do agree with your comments, but ignoring my personal preferences, this driver has had a reasonably hard life as a PA driver and has ultimately failed.... But I would like to say that the driver is 25 years old!!! so I personally cant blame it for giving up. Also as they are all in series one driver has to be the weak point taking a higher proportion of the power, and this must have been it, but it cant be too far off the rest to last it out for nearly 25 years to the day from manufacture 29/04/87. So replacing it with an identical driver (looking like seconh hand) looks like the only sensible way to go.
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SteamboatPhil

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Re: Bose 802 Drivers
« Reply #9 on: April 08, 2012, 08:12:18 PM »

Hi Jon
I will have a look through some of my old gear, I don't really use Bose any more going down the D&B route, but might have a few old bits hiding out the back.
Phil
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Jon

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Re: Bose 802 Drivers
« Reply #10 on: April 08, 2012, 08:32:03 PM »

That would be fantastic if you have got one you wish to part with.
Regards Jon
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