Jump to content
The Classic Speaker Pages Discussion Forums


  • Content Count

  • Joined

  • Last visited

Community Reputation

0 Neutral

About Aadams

  • Rank
    Advanced Member

Profile Information

  • Gender

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

  1. I am considering the small ADS dual dome 3 ways from the late 70s to the 90s with 8 inch or smaller woofer. Anything like a 710 or 810. My question is what is the status of the ADS parts market ? Is the availability as good as AR or is it more like a needle in a haystack. I have almost zero ADS knowledge beyond brand awareness and a connection with Braun. Adams
  2. Aadams

    AR speaker low frequency perspective

    Ligs I have looked at these graphs several times over the last weeks and cannot see the room gain component in the graph. I also read the linked article on sub woofer comparisons. Regarding room gain I am confident that speaker placement in some rooms can add sufficient gain to smaller speakers so the low notes can sound louder, but if you find a spot that can raise the 36hz -10 db point of an AR 10” for instance to - 3db or even - 0db you will most likely create some overemphasis up to and including the first harmonic high bass range. IMO Cheers Adams
  3. Aadams

    WTB Empty 12" cabs- AR11,58s, or 3a

    Thanks Orion56. Cab on the right is swollen from water damage. The asking price is fair but shipping costs make it not a good value for me. Adams
  4. NO drivers please but intact stuffing, wiring and attenuator pots or switches. would be helpful. Adams Edit: I should have specified I am looking for a matched pair.
  5. Thank you Pete B. Read it and am certain to refer later. Basically a clinic on how to use a classic AR 12" as a passive sub-woofer though that was not the original intent. Exactly what I needed. IMO it also sheds light on the AR quest for ever lower woofer crossovers in their premium systems. Adams
  6. Mr Pete Thank you. I gave it a quick scan. It seems relevant to my plan. I will print and read. BTW this is about a subwoofers, crossover frequencies and the floor bounce phenomenon. Aadams
  7. I know the optimum placement for Classic AR bookshelf models is flush in a sufficiently long wall or bookshelf where the wall acts as part of the baffle face but, my question for anyone who knows the answer is: What if the AR3a is turned toward the wall, off the floor, just inches away? Does that placement give the same optimum low bass performance as flush in the wall? Disregard the impact on mids and highs, that is not part of this question. Thanks for any help. Aadams
  8. Boston Acoustics CR 75 vs AR 5 Short version: Above 200hz the BA CR75 is easily the equal of the AR5 in clarity and if you are willing to sit in the small sweet spot it can completely match the AR5 in sound quality above 200hz. This last qualifying statement, re: sweet spot, is also true for the AR2ax, IMO and I'm guessing probably a large number of modern, two way bookshelf speakers as well. Long version: Manufactured in the early 2000s, the BA CR75 is a ported two-way bookshelf speaker with a 6.5 inch woofer and 1” dome tweeter. Crossover point is 2500hz, with frequency response stated at 52-20Khz but no 3db down point specified. Sensitivity is 89db at 1 watt. This comparison with the AR5 is for performance at frequencies above 200hz. In this setup both speakers were sitting adjacent at the same height, connected on a switch as “tops” for a common bass system. The bass performance was identical for both systems and was not a factor in this evaluation. The speakers were volume equalized. They were also frequency balance equalized to as close as convenient but because the CR75s were temporary, I was not willing make larger equalizer adjustments to subdue its extra bit of brightness, in the voice spectrum, to make it exactly match the AR5. Listening distance was 4 to 8 feet. All electronics and source material were identical. Music used was pop/jazz vocals both studio and live and symphony orchestra recordings. On pop and jazz, studio recordings, the sound of the speakers were practically identical after the switch. I forgot which speaker I was hearing more than once. On live recordings at large venues, whether jazz or symphonic, the diffuse and expansive sound of the AR5 sustained a live feel, while the sound field collapsed on the CR75. However, if I chose to find the sweet spot for the CR75, centered about 4ft to 5ft away, the live feel became apparent. This is not a terribly beamy speaker but the listening position for maximum enjoyment is confined to a much smaller area than with an AR5. Caveats: The CR75 is NOT the equal of the AR5 when both speakers are in a stand-alone configuration. The CR75 IMO suffers the same problem as all speakers with 6 inch or smaller woofers. None of them can reproduce wide range music below about 150hz without sounding compressed, whereas the AR5 has zero problems in this area. The CR75 is without attenuation controls and IMO is overly bright in the voice band. You will need an equalizer to tame it. Adams
  9. Aadams

    Back-Issue Magazine Archive Update

    Thanks, Sincerely
  10. Aadams

    H.H. Scott S-176.

    Assuming they are operating correctly, the woofer in both speakers is carrying all but the last half octave of music. The tweeters are playing 8 notes plus important atmospherics, basically, and it may be that the 8" woofer of the Scott is better than the 10 "Dynaco over those 7.5 octaves. I would think the 8" would be a little less beamy also. And the last six inches of sound travel between your ears is most important and only known by you. Adams
  11. Aadams

    H.H. Scott S-176.

    I know nothing about Scott speakers except what is on the internet. The A25 also crosses over at around the same frequency.
  12. Aadams

    H.H. Scott S-176.

    I thought I recognized your handle from the past which meant you probably had other speakers. I looked and found you had A25s at one time and guessed you still had them. Adams
  13. Aadams

    H.H. Scott S-176.

    Have you tried connecting your A25s and placing them next to or on top of the Scott's to compare? You need a reference IMO. Ears are fickle and duplicitous. Adams
  14. Cambridge Soundworks Model Six vs AR5 This was a subjective comparison of performance above 200hz. Performance below 200hz for both AR5 and Model Six was identical in this setup because both speakers were on a switch serving as satellites for a shared bass system. The Cambridge Model Six is a 2 way acoustic suspension speaker, designed by Henry Kloss, with an 8” inch bass/mid and 1 ¾ cone tweeter crossed over at 2000hz. I bought mine new in a $50/pair closeout about 12 years ago. This would seem like a no brainer against an AR5 but when you eliminate bass as a criterion it is easier to focus on other things such as imaging, clarity and sound-field size. Using these three criteria I found differences ranging from negligible to stark, depending on program material. Both speaker systems were volume equalized and connected to identical electronics and source. The Model Six has no attenuation controls but its sound profile was sufficiently close to the AR5s and my AR9s that I did not make any equalizer adjustment. Program material was Pop/Jazz Vocals, symphony orchestra, and John Coltrane. The results: Clarity of both systems is shockingly similar in pop vocal performance and possibly near indistinguishable in a blind test especially if the recording is a studio mix. The sound field of the AR5 is much larger but on pop recordings the collapse of the sound field when switching to the Six is not easily perceived except at the moment of the switch. The AR5 moves into another class playing material recorded live in a large venue. Orchestral works come alive and the sound field is expansive. The model six produces a stereo image that is missing the diffuse, reverberant effect which is a signature of the AR classic domes . The Model Six sound, by comparison, seems two dimensional and hangs flat in the space between the speakers. Conclusion: With its 2000hz crossover and 8 inch woofer the Model Six is beamy and is not what I prefer in a music system but it is linear and sounds good if you can stay in the sweet spot. I will probably put mine to use with my daughter’s TV.
  15. Aadams

    DCM Time Windows

    DCM Time Window vs AR5 Short version: As setup in this configuration, the Time Window 1a and AR 5 are indistinguishable after switching. My Time Windows sound the best I have ever heard them. Longer Version Test setup: Electronics feeding both systems are identical including equalizer settings The bass response of both systems is identical below 200hz because they are bi-amped thus, this comparison is of performance above 200hz. Drivers for both systems are set at listening height with cabinets almost touching. The DCMs have no attenuators. The AR attenuators are set to tweeter max and mid about 75%. AR tweeters are Chris rebuilds. Both systems were volume and frequency-balance equalized to a third system that served as a reference for my ears. (Note the AR 5s had been equalized previously but I reset them for this test. If the DCMs could not have been closely matched in frequency balance at this point without equalizer adjustments, I would have stopped the test. Listening Listened to several hours of pop and jazz voice recordings. At times the intervals were long enough for me to forget which speaker I was hearing. Occasionally I would repeat a recording and push the switch button to listen and compare on the other speaker pair. There is no practical difference in the sound of these speakers above 200hz. If you like the expansive sound of the AR Classic 3 way domes the Time Windows are very similar in sound. Caveats: This test was conducted without the need to optimize speaker placement for bass reproduction because each speaker system was used as a “top” for a separate bass system. IMO -The Time Window 1a, standing alone, has bass extension similar to an AR 8 inch, that is IMO. DCM claims for bass were more substantial but were never stated, for example, as a -3db down point. Crossover frequency was never published but must be well above 1khz. Time Windows, with no attenuation, have a bright sound much like an AR Classic with controls set to max output. You will almost certainly need an equalizer. I know from experience, pre-amp tone controls are inadequate to tame them.