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der

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About der

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    Advanced Member
  • Birthday 01/24/1947

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    Male
  • Location
    Central Ohio
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    Jazz, Golf, Photography, dogs, art, web site design, guitar

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  1. Aadams - I promise a full review of the Q1R and my rebuilt AR3a tweeters. My wife is very ill at the moment and requires most of my attention.
  2. Had Chris rebuild my original tweeters. Finally had the time to install them this morning. They sound great - like having a new pair of AR3a!
  3. I guess I can see how that might happen if you used too much. Not a lot required to do the job.
  4. I think if I were yanking drivers in and out on a regular basis I'd use foam as well. My woofers have been out once in the last 50+ years. Replaced my mids 30 years ago. Tweeters out and replaced with HIVI recently. Original tweets out for rebuild then back in so that will make twice for them. If I fall back in love with the original sound of the tweeters then that will likely be it in my lifetime.
  5. Just sent my original AR3a tweeters off to Chris for rebuild. The HIVI sound good but I long to hear that original sound.
  6. I've always used duct seal, which comes in a block and is usually black in color. I've softened it in hot water to make it more pliable if the weather was cool. I just form a rope of it perhaps 3/8" in diameter and press it in the recessed opening for the woofer. before pressing the woofer in and inserting the screws. Whether or not this is the proper way of sealing the woofer I don't know. But, it's always worked for me. I might add that when I remove the woofer initially I always clean off all the old sealer from both the baffle and the driver.
  7. Roy speaks gospel to me. What a great resource!
  8. Thanks. I rebuilt my crossovers about 4-5 years ago but couldn't remember. I'll put them on the negative side. der
  9. Thanks Roy, great information. I wired the HiVis with the same polarity as the other drivers. I'll have to check my parts box for 25 ohm resistors. Likely have some already. I do have a couple of 6.2 uF 1% or 5% caps that I can wire in as well. I assume in series on the + side or does it matter? der
  10. I've found that I obtain a more pleasing balance by adjusting the L-pads on the mid ranges down a bit from where they were before installing the new tweeters. This cause me to think that the HiVi tweeters are reproducing part of the mid range band. I've adjusted the L-pads controlling the tweeters a great deal since installing the HiVi - from full on to just past halfway. Of course, the settings on my left and right speakers vary a bit because of their positioning in the room.
  11. Thanks for the replies. I have my originals tweeters boxed up and ready to send off for rebuild. I don't intend on discarding them. I also don't intend on ever selling my 3a. either. My son will inherit them. I wonder if he'll appreciate them however. He is a musician (rock) that seems more enamored with satellites with sub-woofers. I'm also wondering if just using the inductor and not a cap has resulted in the HiVi reproducing some of the upper mid-range that the originals didn't. Or, is the addition of the cap help attenuate the output of the modern tweeter to closer approximate the original AR? Perhaps that's something that Roy can address. I have been able to adjust the new tweeters to my satisfaction by using the L-pads. I'm thinking of digging out my old test records to fine tune the levels and balances. der
  12. Now that I've spent some time listening to these new HiVi tweeters and getting levels adjusted to my satisfaction I am very happy with the addition. Even my tired old ears hear a vast improvement in the treble. I am contemplating having my original tweeters rebuilt but I have my doubts that they'll match the HiVi even then. Does anyone think differently? der
  13. My apologies for the confusion. I have a pair of 6.2 uF caps that I did not use with the HiVi tweeters. The HiVi's do have a0.05mH coil on each. The cap I referred to was an additional cap. My crossover network is the same as the original. I just replaced the old, out of spec caps with new ones. I've also swapped out the old pots with L-pads. Again, sorry for the confusion. der
  14. I front wired them because my pair have front wired mids and tweeters. I'm wondering if I should have included a capacitor or not. I can use the increase in tweeter output at my age but I wonder if the HiVi are reproducing down in the midrange now to some degree. After a couple of days listening it seems I prefer the tweeter L-pads just past half way.
  15. I finished up the second speaker last night. As I said, I used the 0.05mH coil but no cap. Polarity is standard. After doing some listening and adjustment of the L-pads I find that I enjoy the change very much. Makes me wonder why these HIVI's have been sitting in a box the last 2-3 years. I've owned these 3a's for over 50 years now and they now sound better than ever. I remember thinking way back when that I thought the tweeters were the weakest part of the speaker. Now, soon to be 73 years old with hearing that certainly isn't what it used to be I find this mod very satisfying. Wonderful to find all the great information provided by many on this site. Thank you all and Happy New Year!
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