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Dave A

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About Dave A

  • Rank
    Forum Veteran

Profile Information

  • Location
  • Interests
    Lapidary, 3D MCAD design, welding, CNC machining and of course music to work by.
  • My System
    1981 Industrial one piece La Scalas
    KP-480 subs
    Onkyo receiver

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  1. KSM-12 II

    Hi John, I had the same fuse question for a pair of KP-320's I bought recently. Marked on the input cup was 4 amp low and 1 amp hi. What was in there was 20 amp and the woofers had been blown up literally. I was told that pro speakers came with 20 amp fuses from the factory per installer requests so they would not have to climb up in the air to fix things. The speakers were supposed to be protected electrically downstream from either remote fuses or other electrical circuit limiters. If this was not done then follow what is on the input cup was the advice I was given.
  2. K-43 Re-cone

    Parts Express has a new link to a re-cone service with prices so cheap I wonder about it. I may take a chance on it for one speaker just to see. https://www.speakerrepaircenter.com/studios I wonder just how does one check a kit out for specs that duplicate the original. Is there some way to measure this?
  3. OK that has bearing on what I want to do. I specifically and only I am interested in working on a speaker or driver one at a time to verify there is no voice coil problems primarily rubbing of any sort. Again what I want is feed back from someone who has used this type of device to analyze this specific problem of voice coil rubbing which I assume this is for. I want to speak to someone who has done this with this type of equipment to learn specifically what to do. The guy who was using this type of device is considered the best speaker recone guy in Nashville now and he checks speakers this way. I assume since he does it for a living there is a reason he does it this way. He is not going to show me how to do this so I need advice from someone who will be willing. I want to know why he does it this way and not with software and IPads phones etc.
  4. OK I can believe in software because I use it daily for design and machining. I looked at REW though and it appears to be for a different purpose than analyzing a single driver for things like voice coil rubbing. The guy I saw use one went from low to high Hz and back and would listen for any frequencies that caused strange noises and check ohms out to. If they had no bad noises and ohmed OK he would say they were good. What I want to do is specifically test individual speakers for problems. How does REW allow for that? I don't care about rooms I just want to check drivers with speakers I am working on. I have the B&K manual and thanks for the link. What I want is to talk to someone who has used one of these before for speaker testing. I am open to alternatives but the speaker rebuilder used a function generator and this thing only cost me $59.00 with shipping so if it does the job I don't want to look further.
  5. A guy who has repaired speakers for me in the past used a frequency generator to test speakers with. Has anyone here done this and if so can you explain exactly what this does? I bought a B&K 3011B off EBay pretty cheap and can duplicate the sounds I heard when the speaker guy did it but don't know how to interpret what I hear.
  6. Standalone DAC necessary?

    What these guys say. There is a propensity here to throw dollars at things and many times I begin to think it is bragging rights driven. I can understand if it is a hobby and people with gobs of cash want to play around but I am assuming the OP wants an economical effective solution that works for his purpose. I intend to buy an Onkyo 8270 and use it to drive audio from my PC workstation to whatever speaker I am using that day. I may at times use it to feed my Crown XLi 800 because I think the commercial amps provide a more realistic concert performance environment since it is a commercial amp and produces the sound you hear at concerts the way it was produced at concerts. But it was only $235.00 delivered and has way more power than my ears could ever stand. These are the only things I would ever buy at this time to feed my speaker monsters using my PC as a source. Good cheap used Crown amps are all over the place if you want to go that route. Check out the Onkyo specs and that yummy DAC: 384 kHz / 32 bit output for just $100 dollars more at Parts Express. As cheap as $439 on ebay with factory warranty. Or buy this and that and the other thing and tinker.
  7. There is a supplier of 1" Baltic Birch in Nashville. 5'x5' for basically $50 each with tax. It is not that much more than 3/4" and I bet a lot stiffer. My bet would be it would have to help too. I know the best sounding La Scalas I have had out of five sets are the Industrial one piece fiberglass coated ones that I kept for that reason. Yes the K43 woofer helps but the stiffer cabinet does too I am certain.
  8. I have searched the forum and the crossovers sticky and I can't find the schematic for this KP-3.2B KP-320 crossover. Anyone have this?
  9. KP-480-SW

    I have a pair of KP-480-SW's. They look like KP-115's but the input cup says KP-480-SW Passive Crossover. Is there any information on KP-480 variants you have"
  10. Checking capacitors in placce

    Got my B&K 885 in and the answer is no they cant be measured in place. Going farther than this with analytical equipment wont happen here so it looks like cut , measure and resolder.
  11. So what did the 1" plywood do for the sound quality? I am thinking of building a Cornwall or Cornscala out of 1" Baltic Birch and figure it has to help.
  12. KP-480 variants

    ANYONE please help me answer this question. I have people beating me up on a listing telling me that my KP-480-SW's are KP-115's even though the input cup says KP-480-SW. I know not everything with Klipsch is well documented at times but I have a problem and I sure wish somebody could answer this.
  13. KP-480 variants

    Still looking for info on the KP-480-SW. Anyone know anything about KP-480 variants? I have questions people are asking me I can't answer so any help is appreciated.
  14. Need to find four of these.
  15. Checking capacitors in placce

    That is what I intend to try this coming week. I had asked the question because I might get direction on which LCR meter to get. For some reason I thought I had read somewhere that you could do this. I have ordered a meter now so it will be what it will be.