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Aadams

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  1. It seems improbable that these cabs were consecutive units when receiving serial numbers. Aadams
  2. Very nice AR3s but there two things that make me suspicious. 1. They are too clean to have not been reworked, which leads to all kinds of questions. 2. The serial numbers are sequential but the cabinet joinery is very different. xxx96 has lock miter joints and 97 does not. Adams
  3. Cbolen These AR5s are similar to yours. This is an old photo showing service replacement tweeters, designed for back wiring, adapted to a front wire baffle. The tweeters have since been rebuilt but front wiring was preserved.
  4. You can’t easily post single images in the MB range on this site. Create a lower res version in the KB range. 100KB works great.
  5. The only solution I know of is to make one from 1/4 inch Masonite. Others here may have a better solution. Vintage AR may sell them. If the woofer operates it is worth repairing. That style woofer is getting scarce as a parts item.
  6. You need the “cork”. It is a spacer to set the cone height when installing the surrounds. Don’t install the surrounds directly to that woofer frame.
  7. If you like the AR9 then you will probably like the A58s mated with an AR1w in an AR581w configuration. The short version is, I have listened to them, side by side, for several hours over the last two days and the sound is virtually identical. All speaker attenuators were set to zero. The signal path was identical except for power amps. The AR9 was running full range on its own amp, while the 581w was crossed over high and low at 200hz. The attached photo shows the AR1w, which is an unjumpered 3a, turned with the baffle perpendicular to the wall which places the woofer perpendicular to the floor and wall, in the same fashion as an AR9 and yields excellent flat bass. The music was mostly pop/rock vocals with a bit of classical near the end to check imaging and timbre of orchestral instruments. None of the music used extended below 42hz. Listening distances were between 4 and 8 feet. This was not about filling the room with music but comparing the character of their sound up close. To begin, the 58s was configured to run full range, in order to gauge the amount of difference between it and the AR9. Stacked 30” off the floor and baffle aligned with the AR9 baffle meant it would sound anemic in the bass, however human voices were clearer than I expected but the imaging was opaque and lifeless. The sound was flat in front of the speaker with no dimensionality in comparison to the AR9. After reconfiguring the system to convert the 12” woofer to an LMR and engaging the 1W, everything came to life. Near the end of today’s session, I rechecked my ears by listening again to the full range 58s against the AR9 to see if I had deluded myself. I had not. I would guess these results for the 58s would be the same for an AR91 and AR92.
  8. Wouldn't be surprised if the stereo preamp in this unit came out of the their high end AV systems. Equalizer bypass is a good feature too. Good choice.
  9. I would say there is a good chance the mic on your new J3 is better than the mic on my 6 year old Iphone 5s. Try your J3 with an HDR recording then play it back on your LSTs Once you hear it on the system from which it was recorded we may have a basis for conversation otherwise, I think you are just trying to be provocative and we are talking past each other.
  10. I am glad to see you did not abandon your thread. First, you should play back your file on your LSTs instead of computer speakers before you try it out on others. Re the 5s: You are correct about the 5s, but the article you reference is strictly concerning the accuracy of the 5s DAC output and not its A to D conversion recording through its mic. I agree with you and Ken Rockwell, the Apple DACs contained within their airplay products, are surprisingly good bargains. You happen to have one in your MacBook Pro which is an excellent digital front end. Have you ever to used it as a hi fidelity music source? You can use it to play your recording back on those LSTs I am also glad you found my photo. Taken out of context, it does appear I have a mess on my hands but If you will read the post in which it was contained, you know it was a temporary test configuration from over a year ago. BTW I am all for the intent of this thread. I just don’t see how listening to smartphone recordings on computer speakers achieves anything worthwhile. Re: Fanfare for the Common Man: it plays for less time than most popular songs and has powerful transients going from silence to very loud in a hurry but, with a quality recording, everything about the dynamic and musical range of the piece is disclosed in the first minute or maybe even the first 30 seconds. There are other options. What would you suggest? I would be happy to hear a smartphone recording of your LSTs playing HDR material of your choice. Adams
  11. Even if you have a couple of original woofers on hand these units are not worth much. The tweeter and the mid probably need work and the cabs are a mess. Without original woofers they are worth nothing except to scavenge parts IMO. Adams
  12. Today, in the spirit of this thread, using an Iphone 5s, I made video and audio files of some Van Morrison and Copland to see if I could produce something decent enough to share here. After several attempts, I determined the best results were recorded too close to the system to get the speakers in the picture so I focused on the sound with the idea that before I posted anything I would “eat my own dog food” by first playing back the files on my systems. Bottom line is, for low dynamic range material that features a vocalist the sound was constrained but would have passed the computer speaker test. When I played back the first minute of Fanfare for the Common Man, on Telarc, it became obvious that an Iphone 5s cannot capture the dynamic range that is being heard by my ears. It was in no way a reasonable facsimile. FM. You have a fine Apple computer that will natively play hi res digital files. If you connect it through an inexpensive DAC or even directly through RCAs to your Preamp and listen to your recording, you will hear what I am talking about. I know your LSTs do not sound like smartphone recordings. BTW the computer on which this post was composed has the same Altec computer speakers you describe purchasing in 2001 and I agree they are adequate for assessing music files to gauge interest but I use their headphone jack most of the time. Adams
  13. I can see the smile on your face as you were writing this. However, if you sincerely believe I am one of those individuals to whom you refer above , you have misunderstood my contributions to your thread and I mistake your motives creating it.
  14. If what I heard is in the the recording it is a crap vinyl recording. As I recall your speakers are on your right side as you face the electronics. The mic is oriented toward the electronics with the sound source on the right and room reflection on the left. That is the way it sounds and is much louder on the right channel because maybe your phone has multiple mics. (the net) is not the limitation in this case. Adams
  15. This is not criticism of your effort. I did not listen to your video on computer speakers. I did listen on headphones days ago but today I transmitted it lossless, first to my AR3as, and then to my AR9s. It sounded better on headphones because the volume was lower, and bass harmonics are prominent. When played on full range speakers it is obvious a lot room reflection was getting into the phone mic as there is a reverb quality in the male voice. Also, as expected, it is mono, which is OK, but it is somehow heavily biased to the right channel which I would attribute to your listening position in relation to the speakers and the orientation of the phone mic. I returned to the headphones and turned up the volume to verify the reverb sound. The reverb is not as prominent in headphones. My guess is because there are no reflections of reflections entering my ears, but the reverb effect is present at higher volumes on headphones. I would estimate if you centered the phone between the speakers and blocked the echoes from behind with a pillow, for instance, the recording quality would be better. The bass will still be limited below 100 hz because the voice mic circuit is being used. It seems such a paradox that you have labored to create a fine analog system but are relying on analog to digital to analog conversion to show it. It is obvious your system can play with ease and authority but the nuance one would expect from such a system is lost in these examples. If you want to try it again, I would be happy to do the same type of audition to check the quality of transfer. Adams
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