Results 1 to 13 of 13
Like Tree6Likes
  • 1 Post By nickb
  • 1 Post By The Dude
  • 2 Post By Enzo
  • 1 Post By Enzo
  • 1 Post By Enzo

Thread: Sound Tech R-15 - And Crossovers?

  1. #1
    Junior Member
    Join Date
    Apr 2017
    Posts
    20

    Sound Tech R-15 - And Crossovers?

    I have two big Soudtech R-15 PA cabinets. Over the years the plastic part the plugs and crossovers mount to have busted all to crap. One even had a jack bust of that was also once attached to the crossover. The crossovers still work but I would like to replace them. I don't know beans about crossovers. Would anyone know what crossovers I would need for these cabinets?

    8 ohms
    Horns: 833 0519 327
    Speakers 15 but unknown who made them.
    The crossovers inside the cabinets on the back of these plastic guards says BFE 85CX2 they have BI Amp section HI and LO and a pot for the high frequency level.
    I could do without the BI Amp part I'm sure the high frequency pot might be of some use.

  2. #2
    I'm a member? nickb's Avatar
    Join Date
    Dec 2009
    Location
    Devon, UK
    Posts
    2,060
    Would it be easier to fix the plastic parts? Can you post a picture?
    Experience is something you get, just after you really needed it.

  3. #3
    Junior Member
    Join Date
    Apr 2017
    Posts
    20
    img_4821.jpg

  4. #4
    Junior Member
    Join Date
    Apr 2017
    Posts
    20
    img_4824.jpg

  5. #5
    I'm a member? nickb's Avatar
    Join Date
    Dec 2009
    Location
    Devon, UK
    Posts
    2,060
    Now I understand your problem. It looks like you might be able use a couple of rectangular aluminum plates, drill, paint and mount the connectors and pot on to it. The crossovers themselves seem to be fine.
    The Dude likes this.
    Experience is something you get, just after you really needed it.

  6. #6
    Supporting Member The Dude's Avatar
    Join Date
    May 2010
    Location
    Sioux Falls, SD
    Posts
    3,888
    That's the way I'd go. Get a couple of blank recessed dishes made of steel or aluminum, drill your own, and never worry about it again. Of course you'll have to measure the hole size in the cabinet, but something like this would work. They come in all sorts of sizes.

    4in x 4-3/8in blank steel jack dish -drill your own!! | eBay

    Edit: If you go that route, I recommend installing isolation washers on the HI-LO input jacks. The possibility exists that someone plugs a reverse wired speaker cable in those. Without isolation washers, you could short an amp in this instance.
    Last edited by The Dude; 04-20-2017 at 09:04 PM.
    nickb likes this.
    “Yeah, well, you know, that’s just, like, your opinion, man.”

  7. #7
    Senior Member Enzo's Avatar
    Join Date
    May 2006
    Location
    Lansing, Michigan, USA
    Posts
    27,068
    That is why the jack cups are plastic.

    COmmercial products:
    https://www.parts-express.com/5-x-7-...blank--260-110
    nickb and Leo_Gnardo like this.
    Education is what you're left with after you have forgotten what you have learned.

  8. #8
    Old Timer Leo_Gnardo's Avatar
    Join Date
    Sep 2012
    Location
    Dogpatch-on-Hudson
    Posts
    4,053
    Quote Originally Posted by Enzo View Post
    That is why the jack cups are plastic.

    COmmercial products:
    https://www.parts-express.com/5-x-7-...blank--260-110
    Parts Express also has some good choices for ready made crossovers, ALSO kits so you can make up your own. And information so you can give yourself a crash course in crossover design.

    FWIW I generally increase the crossover point, by 20 - 50% from stock, to the horn driver when replacing or rebuilding. Two reasons, 1: decreases overall response in the 800-1500 Hz region, that can help reduce squeeks & squawks from microphone feedback and B) Less power going to the horn diaphragm in the low end of its response zone means longer lifetime, less likely to break at the moment you need it.

    Last bit of advice, use film capacitors. Parts Express has their in-house Dayton brand, and they're perfectly good. Avoid non-polarized electrolytics. They have a short life and most of the ones I've ever seen were damaged. The only advantage, they're cheap. You get what you pay for.

  9. #9
    Supporting Member The Dude's Avatar
    Join Date
    May 2010
    Location
    Sioux Falls, SD
    Posts
    3,888
    I'm still for the idea of using a metal/aluminum replacement. A new plastic thing will just break again. It's easy enough to get some isolation washers for the jacks.

    http://www.mouser.com/ProductDetail/...l%252b0A%3D%3D
    “Yeah, well, you know, that’s just, like, your opinion, man.”

  10. #10
    Senior Member Enzo's Avatar
    Join Date
    May 2006
    Location
    Lansing, Michigan, USA
    Posts
    27,068
    Different strokes...

    My thoughts are that the plastic cups, like on a million Peavey cabs hold up pretty well, unless you bash the piss out of them. His edges are broken off, that is from things banging on them.

    Insulating washers work... until you lose them. Nut works loose, falls off, so does your washer. Hole is now oversize. If we want a metal panel, replace the metal bushing jacks with plastic bushing jacks on the biamp inputs.
    The Dude likes this.
    Education is what you're left with after you have forgotten what you have learned.

  11. #11
    Supporting Member The Dude's Avatar
    Join Date
    May 2010
    Location
    Sioux Falls, SD
    Posts
    3,888
    Yep, different strokes.

    Another thought: If you were so inclined and ambitious enough, you could route out a recessed area around the hole in the cabinet and recess a plastic dish. It would help keep it from getting banged into by other gear.
    “Yeah, well, you know, that’s just, like, your opinion, man.”

  12. #12
    Senior Member Enzo's Avatar
    Join Date
    May 2006
    Location
    Lansing, Michigan, USA
    Posts
    27,068
    Pull a woofer, and mount the cup from the inside,
    The Dude likes this.
    Education is what you're left with after you have forgotten what you have learned.

  13. #13
    Supporting Member The Dude's Avatar
    Join Date
    May 2010
    Location
    Sioux Falls, SD
    Posts
    3,888
    Quote Originally Posted by Enzo View Post
    Pull a woofer, and mount the cup from the inside,
    There it is. That's a great idea, Enzo. In fact, if you do it that way, you could just use a flat piece of wood- masonite or something of the sort. No recessed dish necessary and easier drilling.
    “Yeah, well, you know, that’s just, like, your opinion, man.”

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Crate GX-15 not outputting sound anymore
    By CowPunk in forum Maintenance, Troubleshooting & Repair
    Replies: 6
    Last Post: 08-10-2016, 04:51 PM
  2. Replies: 2
    Last Post: 08-02-2015, 04:43 PM
  3. suddenly no sound from my Crate GX-15?
    By cabbit in forum Maintenance, Troubleshooting & Repair
    Replies: 11
    Last Post: 05-12-2014, 06:17 PM
  4. Peavey eurosys 500xt speaker crossovers
    By MARSHALL BUSTER in forum Music Electronics
    Replies: 1
    Last Post: 09-28-2011, 09:01 AM
  5. Marshall MG 15 cdr sound gone bad.
    By donpalabras in forum Music Electronics
    Replies: 4
    Last Post: 05-06-2008, 01:13 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •