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Recent content by Pancakes

  1. Connecting Dual Torroidals

    DIY Repair and Maintenance
    Yeah that finally came to me as I was going to sleep. Now I get it I can't beleive I got stuck on that! I guess doing stuff with 12vDC forever and no AC has bunged me up. How embarressing to have asked that and thanks for the polite reply!
  2. Connecting Dual Torroidals

    DIY Repair and Maintenance
    So each of my transformers is like the 230V single primaries/series secondaries illustration on the site you linked to (the bottom left of the four. The question is that I have two of those and am worried that if I hook one of them up as shown but the other with the primaries reversed (mine are...
  3. Connecting Dual Torroidals

    DIY Repair and Maintenance
    Not sure if this is the right place to post this but I figure people with their noses in this forum will know the answer to my question. I'm building a power amp and am stumped with the Torroidals. There are 4 outputs (split centre tap), that mush is easy. Both the inputs are orange and I want...
  4. Port dimensions vs speaker size

    DIY Speakers
    What are the "rules of thumb" people here normally use and why/what results or variables can be expected from various port designs? I normally try to make the ports as large as possible withouy having the length be much more than ~4x the diameter. Have built a few speakers but never with the...
  5. Help. Are these speakers any good?

    DIY Speakers
    First off I have to make it clear until recently I didn't know there were forums and online sources for speaker building so my experience is very hands on/trial and error. Feel free to use whatever crossovers you have around on your speakers but make sure you only use a high pass not a low pass...
  6. Comments on my XO design so far

    DIY Speakers
    Awesome, that was by biggest hurdle and the thing most out of my control That was the back up plan to actually trying to figure out what the my result would be. As these will end up with an active fourth order xo this passive isn't going to make me lose sleep but I would like to listen to...
  7. Help. Are these speakers any good?

    DIY Speakers
    Hey there! Don't be put off designing your own crossovers. You can pick up a cheap spl meter in the states I'm sure (ou guys seem to be spoilt for choice!) Download a free tone generator. Get a bit of paper and note down the tweeter response to a bit below where you think you'd like to...
  8. Comments on my XO design so far

    DIY Speakers
    Was planning to guess impedance then test to nail it down, I hadn't thought of the tweeter on the second diagram being 4th order but of course it is. So on A the phasing will be +90 deg on the tweeter, zero on the mid and -90 on the Woofer and B would be +180 (reverse polarity) on the tweeter...
  9. Comments on my XO design so far

    DIY Speakers
    Sorry, typing one handed while holding a baby so this will be short-ish. For a whole bunch of reasons I'm looking at a 3 way second order XO for my new stereo speakers. If you have XO building experience please feel free to comment on the two variations posted below. My biggest concern is...
  10. Advice on tweeters and mains cab build

    DIY Speakers
    Please tell me more about the centre to centre measurements or point me to a thread where it has been covered.
  11. Advice on tweeters and mains cab build

    DIY Speakers
    Cost can't be crazy but I feel I will need to spend around $600NZD for the drivers to get a good result. If I could spend less that would be a plus of course but would rather take longer to get the money together and have a better result. Doesn't have to be MTM or WMTMW but I like the look. My...
  12. does this Press insert Nut work on MDF?

    DIY Speakers
    Looks good but pricey when you might need 20 or more in a build. T-nuts being 70c for 4 here seals the deal for me. You'll need screws to secure them too.
  13. Advice on tweeters and mains cab build

    DIY Speakers
    I have built a few sets of speakers but never had a selection of tweeters to choose from with the speakers either being supplied by the people I was building for or used horns mainly for power handling at low cost. The weakest link in my system is my mains which were the first house speakers I...
  14. DIY port plug?

    DIY Subwoofers - General Discussion
    4 t nuts added during construction around the port. Leave bolts in them so they don't whistle and if you want to plug the port a square of MDF and some weather strip will be sweet as. You could even get it looking tidy too
  15. Vent bend radius?

    DIY Subwoofers - General Discussion
    You'll find that there are two types of 90 degree (and all other radius) bends available from plambers supply stores. Some have an edge (sharp feeling) on the inside of the bend. The others have a smooth curve for the inside and the outside. I haven't tried the ones with a corner but wouldn't...
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