Announcement

Collapse
No announcement yet.

Overnight Sensations crossover problem

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Overnight Sensations crossover problem

    Can anyone tell me if these are wired correctly? I can only get a small leakage of sound out of my speakers.
    Attached Files

  • #2
    Re: Overnight Sensations crossover problem

    Originally posted by pja View Post
    Can anyone tell me if these are wired correctly? I can only get a small leakage of sound out of my speakers.
    It LOOKS like you've got the two ends of the lower left coil connected together?

    Top left cnx to amp? Bottom right tweet & woofer w/common gnd in the middle?

    Didn't look TOO closely, but I think there're other problems.

    Comment


    • #3
      Re: Overnight Sensations crossover problem

      Just an obervation on XO layout and wiring.

      I know lots of folks like to layout components on top and wire on the bottom, but as you can see from this example it makes tracing wiring errors very difficult.

      Same goes for arrangements that lay components out in "pretty", gridlike arrangements. Requires extra jumper connections to make it work.

      As an alternative, think about minimum connections between components and laying it out more lke the schematic. It's plenty doable.
      I was so much older then, I'm younger than that now.
      OS MTMs http://techtalk.parts-express.com/sh...d.php?t=220388
      Swope TM http://techtalk.parts-express.com/sh...d.php?t=221818
      Econowave and Audio Nirvana AN10 fullrange http://techtalk.parts-express.com/sh...d.php?t=216841
      Imperial Russian Stouts http://techtalk.parts-express.com/sh...=1#post1840444
      LECBOS. http://techtalk.parts-express.com/sh...ghlight=lecbos

      Comment


      • #4
        Re: Overnight Sensations crossover problem

        Really good suggestions. That's exactly as I do it, using mostly only the components' leads for interconnection, seldom needing to run more than a couple of extra wires, like to carry common connections. I've attached an example photo of the crossovers for one of my projects.
        Paul

        Originally posted by fastbike1 View Post
        Just an obervation on XO layout and wiring.

        I know lots of folks like to layout components on top and wire on the bottom, but as you can see from this example it makes tracing wiring errors very difficult.

        Same goes for arrangements that lay components out in "pretty", gridlike arrangements. Requires extra jumper connections to make it work.

        As an alternative, think about minimum connections between components and laying it out more lke the schematic. It's plenty doable.
        Attached Files

        Comment


        • #5
          Re: Overnight Sensations crossover problem

          As Chris pointed out, there is a definite a problem with L2 (1.1mH) and C3 (0.22uF)... As everyone else stated, it is very difficult to trouble shoot with your layout--it looks like some of the terminus of the components are soldered as soon as they 'punch through' the board. There is a reason most components have relatively long leads, soldering close to the actual component (without a heat sink) COULD also damage the components in question. I would fix the B4N circuit first…
          Attached Files
          Last edited by RINNAV; 01-20-2012, 01:16 PM.
          Jason


          "In my opinion, there are more tactful ways to state your opinion."

          Comment


          • #6
            Re: Overnight Sensations crossover problem

            Originally posted by Chris Roemer View Post
            It LOOKS like you've got the two ends of the lower left coil connected together?

            Top left cnx to amp? Bottom right tweet & woofer w/common gnd in the middle?

            Didn't look TOO closely, but I think there're other problems.

            Yup, as best I can tell, (looking from the back side) you need to take the big coil lead (the one that looks like you didn't scrape the varnish/coating off of - you DO have to scrape off the coil coating when you shorten the leads), cut it lose from itself, and connect it to the solder blob that's about an inch below it.

            It ALSO LOOKS like you took off the + lead going to the tweeter circuit AFTER you went through the tiny cap. The tweeter circuit needs full incoming voltage fromthe amp, so (looking from the front, now) the left lead of your upper BIG cap needs to go directly to your incoming + line, w/out connecting to anything else along the way.

            Otherwise, I think the rest of your high pass seems OK.

            If I've traced things properly, you line in from the amp comes to a tiny cap (with no way around it, and it's TINY, meaning that it will only pass ultra high freqs), THEN there's a larger cap that shunting whatever got to it directly to ground = no sound. Also = direct ultra high frequency short to ground to make your amp unhappy.

            Chris

            Comment


            • #7
              Re: Overnight Sensations crossover problem

              I made a drawing by tracing the top components from the photo of the top of the board, then over-layed it on your photo of the underside of the board. I then flipped the drawing vertically (top to bottom) to match the orientation of the underside. To more closely identify the wiring, I used colored dots that approximate the color of wires where they penetrate the board. Owing to the different angles of the photos, the placement isn't precise, but it should be close enough to access your problem. This is what I think you have.


              I will be able to trace the circuit when I have a bit more time today, but it looks like you have joined the two leads from the inductor (upper left corner), which would explain the weak audio. The drawing should enable others to trace your circuit, but if they don't, I'll be back later on today.
              Tritrix HT:http://techtalk.parts-express.com/sh...d.php?t=222519
              Dayton 12" Subwoofer: http://techtalk.parts-express.com/sh...d.php?t=222930
              Overnight Sensations: http://techtalk.parts-express.com/sh...d.php?t=223751
              Cerberus sub: http://techtalk.parts-express.com/sh...hlight=cerebus
              Duellatis: http://techtalk.parts-express.com/sh...d.php?t=224943
              NTN's: http://techtalk.parts-express.com/sh...d.php?t=227902

              Comment


              • #8
                Re: Overnight Sensations crossover problem

                Yup, as best I can tell, (looking from the back side) you need to take the big coil lead (the one that looks like you didn't scrape the varnish/coating off of - you DO have to scrape off the coil coating when you shorten the leads), cut it lose from itself, and connect it to the solder blob that's about an inch below it.
                Looks like Chris has got it figured out for you. Way to go Chris... I'll check back later...
                Tritrix HT:http://techtalk.parts-express.com/sh...d.php?t=222519
                Dayton 12" Subwoofer: http://techtalk.parts-express.com/sh...d.php?t=222930
                Overnight Sensations: http://techtalk.parts-express.com/sh...d.php?t=223751
                Cerberus sub: http://techtalk.parts-express.com/sh...hlight=cerebus
                Duellatis: http://techtalk.parts-express.com/sh...d.php?t=224943
                NTN's: http://techtalk.parts-express.com/sh...d.php?t=227902

                Comment


                • #9
                  Re: Overnight Sensations crossover problem

                  I see the OP hasn't been back for awhile, so he's either busy, no longer interested, or busy fixing his crossovers. In the meantime, I've spent a little time looking for a way to sort this out in a way that can be easily communicated to whoever might be interested. As I said, it may be that the OP isn't interested anymore, but after I've gone to the trouble of sorting this out, I'm going to post my work. For your your viewing pleasure, here's the plate of spaghetti I've been working on..



                  I traced the original wiring, then "rewired" it using the lines with dots. It all looks correct to me, except for the connection in the upper left corner, linking both sides of the 1.1 mH coil.
                  Tritrix HT:http://techtalk.parts-express.com/sh...d.php?t=222519
                  Dayton 12" Subwoofer: http://techtalk.parts-express.com/sh...d.php?t=222930
                  Overnight Sensations: http://techtalk.parts-express.com/sh...d.php?t=223751
                  Cerberus sub: http://techtalk.parts-express.com/sh...hlight=cerebus
                  Duellatis: http://techtalk.parts-express.com/sh...d.php?t=224943
                  NTN's: http://techtalk.parts-express.com/sh...d.php?t=227902

                  Comment


                  • #10
                    Re: Overnight Sensations crossover problem

                    Originally posted by Soundslike View Post
                    I see the OP hasn't been back for awhile, so he's either busy, no longer interested, or busy fixing his crossovers. In the meantime, I've spent a little time looking for a way to sort this out in a way that can be easily communicated to whoever might be interested. As I said, it may be that the OP isn't interested anymore, but after I've gone to the trouble of sorting this out, I'm going to post my work. For your your viewing pleasure, here's the plate of spaghetti I've been working on..



                    I traced the original wiring, then "rewired" it using the lines with dots. It all looks correct to me, except for the connection in the upper left corner, linking both sides of the 1.1 mH coil.
                    Ron, sir... you are too much, my friend.... :D

                    Comment


                    • #11

                      Comment


                      • #12
                        Re: Overnight Sensations crossover problem

                        If you're still around, I know I speak for everyone when I say, you're entirely welcome. A great bunch of knowledgeable, helpful guys here. Enjoy your Overnight Sensations.
                        Tritrix HT:http://techtalk.parts-express.com/sh...d.php?t=222519
                        Dayton 12" Subwoofer: http://techtalk.parts-express.com/sh...d.php?t=222930
                        Overnight Sensations: http://techtalk.parts-express.com/sh...d.php?t=223751
                        Cerberus sub: http://techtalk.parts-express.com/sh...hlight=cerebus
                        Duellatis: http://techtalk.parts-express.com/sh...d.php?t=224943
                        NTN's: http://techtalk.parts-express.com/sh...d.php?t=227902

                        Comment

                        Working...
                        X