Results 1 to 3 of 3

Thread: Replacement Crossovers for Heathkit AS-101 Altecs

  1. #1
    Junior Hostboard Member gdimauro4953's Avatar
    Join Date
    January 10th, 2018
    Posts
    3
    Follows
    0
    Following
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Replacement Crossovers for Heathkit AS-101 Altecs

    Hi, I still trying to get a post entered regarding this issue I have. I need to upgrade my 1970 Heathkit AS-101 speakers. I need advice on components to use. These original crossovers have PIO and that was all I ever was exposed to so naturally I would love to get them replaced. However, I realize it's really hard to get PIO caps these days so I'm hoping to learn which way I should go. Any help will so be appreciated! Thank you all in advance.
    Peace

  2. #2
    Senior Hostboard Member Earl K's Avatar
    Join Date
    December 5th, 2002
    Location
    Toronto
    Posts
    507
    Follows
    0
    Following
    0
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    4 Post(s)

    Re: Replacement Crossovers for Heathkit AS-101 Altecs

    Quote Originally Posted by gdimauro4953 View Post
    Hi, I still trying to get a post entered regarding this issue I have. I need to upgrade my 1970 Heathkit AS-101 speakers. I need advice on components to use. These original crossovers have PIO and that was all I ever was exposed to so naturally I would love to get them replaced. However, I realize it's really hard to get PIO caps these days so I'm hoping to learn which way I should go. Any help will so be appreciated! Thank you all in advance.
    Peace

    You'll find many Altec enthusiasts using Motor-Run caps these days . I use them with my Altec 288-8Ks.

    Typically ( at least for the last few decades ) Motor-Runs construction is MPP, damped in oil .

    They're not the PIO's of days gone-by but are instead, Metalized PolyPropylene in oil.

    They are really quite good and readily available ( at decent prices ) from surplus caps sellers on eBay.

    Remember you can directly add cap values ( when paralleled ) to get the value you need.

    Here's the schematic for your network.

    1


  3. #3
    Junior Hostboard Member gdimauro4953's Avatar
    Join Date
    January 10th, 2018
    Posts
    3
    Follows
    0
    Following
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Smile Re: Replacement Crossovers for Heathkit AS-101 Altecs

    Earl K,

    Thank you so much for this info. The Heathkit Circuit Description wiring diagram you attached is perfect. I now have a direction I can aim for. Many thanks once again!

    Peace

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
This forum has been viewed: 20758595 times.