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Pete B

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About Pete B

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    Connecticut, NE USA
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    Interest in Audio for over 30 years, got started early
    Electrical Engineer (see my web site link)

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  1. http://techtalk.parts-express.com/forum/tech-talk-forum/61156-overstuffing#post1089910
  2. http://baselaudiolab.com/ADVENT_LA_XO.html Figure 5 has the schematic.
  3. Using the 5002 tweeters in OLA/NLA has been discussed here before. OLA has a 2nd order network NLA 1st order but the 5002 has a 3rd order and it should be duplicated if you want to use the dome tweeters. I don't think that the 5002 sounds as good as the OLA and would suggest going back to the original tweeters.
  4. If you are up for it the Econowave Mod makes a lot of sense for your application. You could use one waveguide tweeter with two woofers. I can explain it if you are interested. https://audiokarma.org/forums/index.php?threads/zilchs-ak-design-collaborative-econowave-speaker.150939/ If you don't want to do that, then the first question is what revision of the OLA are your speakers? The first revision with the very light weight red dot inductors were known to have the wire burn up and possibly short out. There was a tech note from Advent about measuring the DCR of the inductor when replacing tweeters. I would just replace the tweeter inductors with 18 or 20 ga air core if you have the dot type inductors. Some of the tweeter resistors are near the switch and they were probably the source of heat. I've been writing this assuming you want to use them as PA speakers, are the Peavy s good enough so that the Advents are going back to home use? I'll bet that the Advents had better bass.
  5. Poplar should be far easier than stapling into masonite or mdf, it should work fine.
  6. Is Poplar a Hardwood? Written by Chris Deziel; Updated October 16, 2019 Poplar is a hardwood, but it isn’t a hard wood. The most common species in the United States, yellow poplar (Liriodendron tulipifera), is found throughout the Northeast as well as in Canada, and it’s deciduous. The question may arise in your mind: “But is poplar wood strong?” and the answer is yes, but it isn’t as hard as most hardwoods, with a hardness rating less than that of some species of cedar, which is a softwood.
  7. I think .75" square poplar cut with the bevel might look better being less bulky looking than Glen's. But of course measure first to be sure that everything fits and clears.
  8. Power ratings with speaker drivers are mostly wishful thinking. It is really very simple a 1" voice coil wound on an aluminum former typical of a tweeter is most often good for about 10W RMS perhaps 15W with ferro fluid due to thermal heating. The average power in music is much lower than the peak so many companies rate in system "Music" power. It is all a ratings game. The other limit is displacement at the lower end of the spectrum for the driver, you want tinsel lead in wires with a tweeter that is driven hard at the lower end of the spectrum and an overall "good" design so that the wires do not break. You have determined that the Advent Tweeter fails under your use condition, might as well try the Q1R and let us know how it goes.
  9. That AR-3a Improved crossover is nearly the same as the AR-11 with the noted use of Lpads except for the tweeter cap going from 10 uF in the AR-11 to 4 uF. I would probably experiment with 6 to 8 uF when using the AR-11 tweeter. I measured some peaking in the stock AR-11 tweeter crossover section with the 10 uF and the level full up. I'd have to check my notes on the measured crossover frequency. I would not go larger that 4 uF with the older non-ferrofluid tweeter in the 3a.
  10. Pete B

    AR 310 HO

    Here's a picture: 1. remove the strap on the red terminals. 2. loosen the screw caps for both red and the top (mid/tweeter) black. 3. connect the 4 ohm from lower red to top red. 4. connect the 10uF from the lower red to the top red. 5. connect the 20 ohm from the top black to the top red. 6. connect the amp connection to the woofer input as shown.
  11. Pete B

    AR 310 HO

    Check the foam on all the drivers and check to make sure that the mids and/or tweeters are not blown. I'll try to take a picture of how to set it up when I have a minute.
  12. They are looking great! What is the thinking behind RAF then Watco over it, isn't Watco Danish Oil also a colored finish? I have used it but not over RAF.
  13. Nice work, I'm very pleased that we have another alternative!
  14. Odd, given the AR interest here that L-Pad info comes in 4th and then 11th and lower for AR topics.
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