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Carlspeak

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About Carlspeak

  • Birthday 08/08/1943

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    http://www.classicloudspeakerservices.com

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  1. As you can see in Troels stacked experiments, mH values changed noticeably. I'd be much more concerned if the AR9 had stacked coils in the mid or HF circuits where your hearing is much more sensitive to.
  2. You've got a high likely hood of inductor cross-talk in a couple of spots due to their same orientation and close proximity to each other. One of the large coils in the left pic should be stood up on edge, In the right pic, stand the blue coil on edge. These changes should be beneficial to your speaker's performance. For more info. on inductor cross talk, visit Troels Graveson's web site. He has a nice chart there that shows recommended mounting of coils and distances.
  3. With the 0.1 cap the bypass allows signals to pass ~ 1 kHz and above. with the 0.01. not until ~ 4 to 5 kHz. So, with a 2-way speaker there's more benefit with the 0,1 uf and with a 3-way, 0.01 uF.
  4. If you want to hear more of the effect of the bypass cap, use a 0.1uF. If you want to hear less, use a 0.01 uF. Vishay makes a good one.
  5. Seems like no easy DIY fix here. Time to scout out electronic repair shops near you?
  6. Have you tried disconnecting the woofer itself from the cables and testing it by itself to ensure the woofer is not blown?
  7. I fixed a powered sub once by opening it up and discovering a fuse inside had blown. Check your sub for fuses.
  8. OEM Callins and Temple caps are cr&p. They age terribly and drift way out of spec. I have a pair of 100uF Solen caps F.S. PM me if there's any interest.
  9. OK thanks for trying.  I will start another thread and you can delete my post from the Eyeglass thread.

  10. Carl

    I just posted erroneously into your earspeaker thread.  Can you please move my post to the Hybrid LST thread in the same forum topic, Mods and Tweaks.

     

    Thanks

  11. You can pay a fortune for Ohmite 15 ohm rheostats, or go with the prevailing recommendation of an inexpensive 8 ohm L-Pad with parallel 25 ohm resistor that will accomplish the same result. The AR3a restoration document goes into detail about the available options to replace the vintage AP pots. The recommendations are independent of the vintage of the AR speaker.
  12. I sell a lot of premium linen grille cloth to vintage speaker owners. With it, I provide written instructions on how to install the cloth using a method I used on many cloth installs. Aileen tacky glue on all four sides, then fold the corners and staple only there. PM me and I'll be glad to email you those instructions.
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