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Aadams

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  1. The web site "Peter's Planets” is for fans of Gustav Holst’s “The Planets”, first recorded around 1922 and most recently in 2017. Peter has acquired, listened to, and subjectively ranked over 80 recorded performances of the “The Planets”. Now, through the miracle of Lossless Streaming, you can do the same. I won’t be doing that. I already possess two CD versions (Peter’s No.1 and 49) but curious there might be something better, I streamed a dozen others that are offered up as great examples. Do they sound the same? No, mostly not even close. Just like covers of popular songs, they differ in style or interpretation and noticeably, in recording sound quality. Internet searches show the consensus top ranked recording of the “The Planets” appears to be the 1986 Montreal Symphony/Charles Dutoit on Decca, my pick as well until I heard two newer ones; Cincinnati Symphony/ Paavo Jarvi 2009 Telarc and Dallas Symphony/Andrew Litton 1996 Delos. There are a couple of original Hi Res recordings you may prefer or maybe something older. Preference is totally subjective. The only convenient way to do these comparisons and find what you like is Lossless Streaming.
  2. And now we have page three. This is a rare thread, drifting into a dendritic form that is reminiscent of something I have seen on TV. I sense someone is wearing an onion on their belt.
  3. Maybe I misunderstood your objective in naming the thread Replacement AR-4x Tweeter: A Mod In Work. If your objective was to create a mod to satisfy yourself then your thread is done. But, I recall earlier, you stated that you would get response curves from "a friend across town" to show us the difference between a stock PRT and your mod. You also stated that you would lend your finished mod PRT to another qualified forum member for subjective evaluation of the results in a working AR4 model. I bought what you said. Maybe I read too much into your words but they seemed like straight forward English at the time.
  4. I, along with most of the “lurkers and monitors”, await the operating 4x portion of your project, especially the response curves you spoke of earlier.
  5. The last movement of The Young Persons Guide To The Orchestra is among the best 3-minute runs in all classical music. It’s definitive recording was captured by Decca in 1969 with the composer conducting. There have been many recordings since, some better engineered, with more dynamic range, but for 52 years no one ever matched the balance of the full orchestra as presented by Britten and Decca in that last movement. The challenge is in the last minute of the last 3 minutes. The first two minutes are spent with the orchestra following the piccolo, descending into seeming fugal chaos until the full brass and low strings restore order with a grand restatement of the original theme while the high strings and woodwinds continue the fugue. Most recordings allow the brass to swamp the strings. Britten obviously wanted the strings heard singing high counterpoint flourishes over the brass. Goose bumps when it is right. These are excellent recordings and performances of the Britten work. From left to right the recordings get technically better but the 2021 Petrenko from Onyx is the best because it achieves the orchestral balance of the Decca, while being captured in Hi res lossless format. It appears to be available streamed or as downloadable file versions. No hard copy versions. Note: You really need to listen to the entire 16 minutes to fully appreciate what is happening in the last 3 minutes.
  6. Just make it perform and appear correctly. None of the rebuilt dome tweeters you hear about have original coils. Some of them are custom wound for application as either 4 or 8 ohm as specified by the buyer. Some tweeter domes are original some domes are aftermarket. Midranges could be a bit different. Nobody restores them.
  7. Your project is interesting. I would say, just take your project to conclusion and the admin will know in the end whether or not it is an MT thread.
  8. This would be helpful No reason to be shy. If you can credibly restore failed AR5/AR3a/11 midranges for a reasonable fee you will get interest. I am saying what you are doing to the PRT is not practicable for almost all of us, so unless you bring it to market or show us how it is simple to do, this is an academic exercise that should be in Mods and Tweaks. We would pay you for the modified part in the expectation that it would meet expectations. You would build cred as the number of successful transactions increased and through supportive reports of success on this and other sites.
  9. I thought for a while this thread was hijacked. Now I am not sure. What you are doing is interesting but unless you actually get something done, its like listening to grandpa Simpson stories that don't go anywhere. You don't have the name recognition of Allison or Kantor, so even if you put this in a 4x for instance and tell us it is better we will need an easy and inexpensive way to verify your claim. We don't all possess your skills or inclination to invest the time to replicate your efforts so where is this project going? The crossover mods in the M&T thread you mentioned are easily replicable, your surgery and techniques are not. How will this serve the interests of AR4 owners in general after you finish? Otherwise, this thread should be a in Mods and Tweaks. I am still waiting for you to restore 3a dome mids?
  10. You have everything you need to do what you want. The polks are two ways which means the the upper midrange is in the tweeter at least partially. Fortunately you have a midrange tone control on your Sansui. It could be, you only need to turn down the mid range control.
  11. The easiest way to deal with this ,if your high range tone control won't do it, is connect a ten band equalizer in your tape loop. No crossover mods unless that is what you prefer.
  12. It I just remembered. In those ADD particle board baffles, the duct seal material can bond to the wood particles. The longer it stays, the tighter the bond. The next time you remove the driver you can pull out chunks of the smooth routed mounting surface. Best bet now days, is gasket tape.
  13. About 10 years ago the late @Carlspeak posted a valuable analysis of tests of old bi polar caps he had removed from loudspeakers over years of repair and restoration. He concluded there was no practical reason to remove Sprague Compulytics without outward evidence of malfunction. I have AR classics with all new caps and all old spragues. There is no difference attributable to caps. You have new caps in your AR9s. Put on a favorite recording and compare to the 10pis. They won't sound the same but if they sound equally distortion free you are good to go. I wouldn't change them.
  14. There is an engineering design section in the manual that gives the details you seek. Among the details is how the placement of the LMR in the cabinet, the cabinet depth and crossover frequency work to automatically negate the effect of cancellations from reflections in low mid range frequencies. This is a long way to say I think your mid ranges are too close to the side walls. This might be an angle-in situation.
  15. Yes. Assuming they are operating correctly and identically placed in relation to reflective boundaries and the listeners ears, the 3 series plays bass much lower than the 5. In your photo, the gain from room placement favors the 5 because it is on the floor. You are probably hearing a mid bass hump.
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