Radio shack Nova 8B 40-4026A crossover schematics ?

Adam Czepiel
Adam Czepiel Posts: 46
edited March 2014 in Vintage Speakers
My nephew just got a pair of nova8B.. he will bring them to me in the next few weeks, to refinish, and rebuilt the crossovers...

anybody have a xover schematic , so I can order the capacitors and have them in stock ..before they get here ?
* The Trouble with Doing Nothing , is that you Can't Tell if you are finished *
Post edited by Adam Czepiel on
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  • westmassguy
    westmassguy Posts: 6,850
    edited February 2014
    Couldn't find the schematics, but there is one on eBay: http://www.ebay.com/itm/REALISTIC-NOVA-8B-40-4026A-SPEAKER-PARTS-rear-panel-crossover-/161117374931
    Looks like a 10uf, and a smaller value cp. Maybe contact the seller and see if he can read the value on the other one.
    Home Theater/2 Channel:
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  • cnh
    cnh Posts: 13,284
    edited February 2014
    You should do a search over on Audiokarma.org There is an entire thread on Modding a Nova 8B, I believe, that improves the original crossovers and takes them up a notch. I have an old pair of Nova 8 originals that I will eventually do something with.

    cnh
    Currently orbiting Bowie's Blackstar.!

    Polk Lsi-7s, Def Tech 8" sub, HK 3490, HK HD 990 (CDP/DAC), AKG Q701s
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  • OldmanSRS
    OldmanSRS Posts: 419
    edited February 2014
    Coils are over rated :lol:
    '65 427 Shelby Cobra
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  • gimpod
    gimpod Posts: 1,793
    edited February 2014
    Adam Czepiel wrote: »
    My nephew just got a pair of nova8B.. he will bring them to me in the next few weeks, to refinish, and rebuilt the crossovers...

    anybody have a xover schematic , so I can order the capacitors and have them in stock ..before they get here ?

    This is not such a good idea unless you've got money to burn. Your better off getting the correct values from the actual crossovers. Schematics are a good starting point but I have found them to be wrong or out of date (earlier/later version) too many times.

    JMO.
    “The two most important days in your life are the day you are born and the day you find out why.” ~ Mark Twain
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  • Adam Czepiel
    Adam Czepiel Posts: 46
    edited February 2014
    Update.... I don't have possession yet, but someone gave me the cap values
    4.7 uF, And 10uF. So. I do ave these values in stock...no need to order :-)
    * The Trouble with Doing Nothing , is that you Can't Tell if you are finished *
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  • Mr. Bubbles
    Mr. Bubbles Posts: 736
    edited February 2014
    I always liked the vintage RS speakers. Well maybe not all but atleast agood many. I have several in my collection though they have not been in rotation for quitre some time. Can't remember all the models. Found a unique pair a while back, seem to be modeled after the Monitor 7 with a shallow wide cabinet like some of the earlier Bostons. Good luck and enjoy. They are not polks but pretty nice for what they are. I have the 8 or the 8B and would be happy to take them apart and look for you but they are packed away pretty deep and can't easily get to them right now.
    If con is the opposite of pro, is Congress the opposite of Progress?!


    Monitor 5Jr, Monitor 5, RTA12, RTA 15TL, SDA 2A, 1c, SRS 2, 1.2TL, CRS, Atrium.
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  • Adam Czepiel
    Adam Czepiel Posts: 46
    edited March 2014
    Update... Nephew brought them over...cabs are not so hot..but with some talc ????

    One speakers has blown tweeter, and the two kids are blown...

    Some turkey dissected them at one point..and lost he speakers screws..but did redneck them back together with drywall screws :-(.
    I also had to resolder both woofer coils as somehow they came ' UN soldered'

    Well I need 1 tweet and 2 midranges


    Are these Junkers or worth saving ??????
    * The Trouble with Doing Nothing , is that you Can't Tell if you are finished *
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  • George Grand
    George Grand Posts: 12,258
    edited March 2014
    Nope.
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  • mhardy6647
    mhardy6647 Posts: 33,802
    edited March 2014
    Mr. Grand speaks, not atypically, with veracity.
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  • Mr. Bubbles
    Mr. Bubbles Posts: 736
    edited March 2014
    Adam Czepiel wrote: »
    Update... Nephew brought them over...cabs are not so hot..but with some talc ????

    One speakers has blown tweeter, and the two kids are blown...

    Some turkey dissected them at one point..and lost he speakers screws..but did redneck them back together with drywall screws :-(.
    I also had to resolder both woofer coils as somehow they came ' UN soldered'

    Well I need 1 tweet and 2 midranges


    Are these Junkers or worth saving ??????


    Don't know if George meant Nope they aren't junk, or Nope they aren't worth saving. I would say that's up to you and your nephew. It would naturally depend on cost of replacement parts and how well the nephew likes the speakers. As pointed out previously I am fond of several of the vintage RS gear. From a sound standpoint they are simple speakers for simple ears. But you just kind find that look too much anymore. I'll try to check and see if I can get to my RS stuff. I have the parts you need, but I am not sure how deeply buried they are.
    If con is the opposite of pro, is Congress the opposite of Progress?!


    Monitor 5Jr, Monitor 5, RTA12, RTA 15TL, SDA 2A, 1c, SRS 2, 1.2TL, CRS, Atrium.
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  • George Grand
    George Grand Posts: 12,258
    edited March 2014
    I meant I personally wouldn't spend a nickel, or fifteen minutes trying to salvage them.
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  • tonyb
    tonyb Posts: 32,963
    edited March 2014
    Junkers....like George said, don't waste any time or coin on those.
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