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Thread: Help on Altec N501-8b

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    Senior Member sbjacob's Avatar
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    Help on Altec N501-8b

    I couldn't find a schematic for this or any other info.What drivers were used with this crossover ?

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    Senior Member sbjacob's Avatar
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    Quote Originally Posted by sbjacob View Post
    I couldn't find a schematic for this or any other info.What drivers were used with this crossover ?
    Anyone?

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    A better question would probably be what systems used it. Then go from there. Having said that..... I don't know.

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    Senior Member sbjacob's Avatar
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    Quote Originally Posted by Goodwill_HiFi View Post
    A better question would probably be what systems used it. Then go from there. Having said that..... I don't know.
    I purchased one of these crossovers to use on my DIY project so I don't know the model that this crossover was used in. Thanks

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    Quote Originally Posted by sbjacob
    ,,,,snip,,,, so I don't know the model that this crossover was used in. Thanks
    - It was used with the A7-500-8E system, consisting of a 828E cabinet / 902-8T on a 511b horn / & 416-8C for a woofer .
    - This info was findable in the LHF library ( even though it's not searchable using the sites' search-engine ) .


    - As far as the N501-8b schematic, I really doubt that it's anything more than an updated version ( ie; cheapened enclosure ) of the N501-8A whose schematic can be found over at Altec Pro ( use Google ) .

    - You've got one, open it up , compare its' cap values to those of the N501-8a, & post the results so the rest of us can learn something from your thread .

    >< cheers

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    Senior Member sbjacob's Avatar
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    Quote Originally Posted by Earl K View Post
    - It was used with the A7-500-8E system, consisting of a 828E cabinet / 902-8T on a 511b horn / & 416-8C for a woofer .
    - This info was findable in the LHF library ( even though it's not searchable using the sites' search-engine ) .


    - As far as the N501-8b schematic, I really doubt that it's anything more than an updated version ( ie; cheapened enclosure ) of the N501-8A whose schematic can be found over at Altec Pro ( use Google ) .

    - You've got one, open it up , compare its' cap values to those of the N501-8a, & post the results so the rest of us can learn something from your thread .

    >< cheers
    I will post photos and cap and inductor values . Thanks much

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    Dang. Amateur speakerdave's Avatar
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    Quote Originally Posted by sbjacob View Post
    I will post photos and cap and inductor values . Thanks much
    That is definitely needed, because I do not believe the schematic for the N501-8B appears anywhere online. A schematic and DCR values for the inductors would also be nice.

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    In the quick search I did the other day, I found information stating that the A and B are indeed different. I think it was over on AudioKarma.

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    Senior Member sbjacob's Avatar
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    Quote Originally Posted by Goodwill_HiFi View Post
    In the quick search I did the other day, I found information stating that the A and B are indeed different. I think it was over on AudioKarma.
    The crossovers are at UPS depot I will pick them up Monday and post info that week.

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    Most of the Altec home VOTT systems crossed at 800 not 500, but I beleive these 500 crosses were used in the Barcelonia and Santiago systems.


    I think:
    Barcelona = 411 woofer, 806 HF, 511 horn, 500 cross
    Santiago = 411 woofer, 806 HF, 811 horn, 500 cross

    ...but I could be wrong... ..you can search here to confirm.
    Attached Images Attached Images  

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    RIP 2011 Zilch's Avatar
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    Not sure what the issue is, but it's apparent there is one....

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    Senior Member sbjacob's Avatar
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    Quote Originally Posted by grumpy View Post
    Worth a read of the spec sheet before posting it and commenting...
    unless the point was an attempt to correct the specs.
    If anyone is interested in the results you can shoot me a email at aayrassian@yahoo.com

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    OK - The Barcellona has a 500 cross, 511 sectorial horn, 802 compression driver and a 411 woofer. According to the posted reference material above, the woofer is housed in a sealed enclosure.

    Obvioulsy, reading the material posted on this cite is somewhat tricky. I finally downloaded the file to my HD and converted it to a file my machine can read. ....not an easy task for many.

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    Senior Member grumpy's Avatar
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    sbjacob, It would be great if you could pick up where post #9 left off.

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    Senior Member sbjacob's Avatar
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    Quote Originally Posted by grumpy View Post
    sbjacob, It would be great if you could pick up where post #9 left off.
    I opened up and is similar to the N501-8A however there is are a few more caps.I replaced the 3uf cap and added a Dayton Film and Foil bypass cap .47uf on the 28uf caps until I can get some new ones.I will post inductor value later as I can not find my leads on my inductance meter.Also I will post ohm and watt of the resistors and when I get time post a schematic.Attachment 39959

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