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Bill Fitzmaurice

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About Bill Fitzmaurice

  • Birthday 27/11/1949

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    New Hampshire, USA

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  1. It's not the voice coil thermal rating that counts, it's the driver displacement. Back when my 50 watt '65 Bassman was new the Fender 212 couldn't handle it, nor could two. I eventually wound up with a pair of 412s before hitting the books and learning how to design my own cabs. In retrospect I owe Leo Fender a debt of gratitude, as he set me on the path to making my living as a speaker designer. I do agree though that 3012s would be overkill, a pair of 2012s would suffice for a lot less money. Betas aren't bad either.
  2. I'd line that with polyester batting, it will clean up the mids considerably. I'd investigate the tuning as well, you may not be taking full advantage of the 3015 capabilities. I doubt that the cab is braced either.
  3. I can't see the need for more than a Kappalite 3015 with only 100 watts pushing it. If you're not getting the volume you need you should be looking at a better amp, not more speakers.
  4. He who dies with the most tools wins. 😏 After wasting decades searching for tools I finally put these in my basement, garage and workshop:
  5. Looking at the pictures of them the connectors don't appear to be Neutrik, and one advertisement for them says that they make their own. I've seen many reports of problems with Speakons but never with genuine Neutrik.
  6. According to the Phil Jones owners manual both the 2 positive and 2 negative connections are in parallel, resulting in each PJB speaker connection capable of handling peaks of up to 80 amps. That would be of great advantage if you're using the cables for arc welding. 🙄 For electric bass speakers 20 amps capacity is sufficient for most any amp I'm aware of. If all you're pushing is a measly 500 watts that's 11 amps into a 4 ohm load.
  7. Business card stock is perfect for a cone tear, it's very similar to the material the cone is made from. It's only when the damage is in the surround that a more exotic material is required, so that the surround remains flexible. That material is silk screen, which is similar to the material that the surround is made of.
  8. It appears that the SS4 cable is simply Neutrik NL4 connectors and a four conductor cable with an absurd price. You should be able to make your own with two of these: https://www.bluearan.co.uk/index.php?id=NEUNL4FX&browsemode=category plus a length of this: https://www.bluearan.co.uk/index.php?id=JAMBC420DL1M&browsemode=category The cable conductors are color coded, so it's not rocket science figuring out how to connect the 1+ pole of the one to the 1+ pole of the other, likewise for the 1-, 2+ and 2- poles respectively. 2mm cable in a 1.5 meter length will safely and effectively handle 1500 watts per pair, so for the parallel pairs of this home made SS4 equivalent the capacity is 3000 watts. However, a cable shouldn't just stop working for no reason. Check the connectors for wires that have come loose.
  9. Unless you have a valve amp that doesn't have an 8 ohm tap there's nothing to be gained by using a 4 ohm cab.
  10. You're lucky it didn't end up permanently silent. That would have been no laughing matter.
  11. Glue alone might not hold well. Copydex looks to be a good adhesive, use it to glue a piece of business card over the hole and you should be good for a while, if not permanently. Do remove the driver to do the job, so you can push the bits of cone back into place from the back. From a cosmetic standpoint you could glue the patch to the rear of the cone, so it won't be a visible repair.
  12. It's a phase sourced cancellation caused by the distance between the pickups. The same thing happens with one pickup when it's a humbucker, but at much higher frequencies, as the distance between the coils is so short. That's why a Les Paul or any humbucker equipped guitar doesn't have the highs of a Strat or other single coil pickup guitar.
  13. I did the same to my Superfly shortly after I got it. One reason was to give me a place to put the fan I needed to use to keep it from overheating. It's the same case I previously had my Hartke 3500 mounted in, so I still ended up with a net weight reduction of some 10kg or so.
  14. Whatever is the problem it's inside. It could be anything from power supply caps that are toast to a simple cold solder joint between a component and the PC board. Easy enough to diagnose and fix if you're an experienced tech. If you're not an experienced tech you need to take it to one.
  15. It's this picture that left me shaking my head: Cabs like that are the reason why I started building my own in 1969. There were some very well designed bass cabs back in the day, EV B115M and B215M and the JBL Cabaret series are a couple that come to mind. Nobody bought them, because they were sold as separates, and in those days you always bought the amp and speaker as a set. The largest amp manufacturers were Fender, Marshall and Vox, and their bass offerings were basically guitar amps without reverb or tremolo. The only amp manufacturers from the 60s that were first and foremost electric bass oriented were Ampeg and Sunn, and not coincidentally they had the best bass speakers as well.
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