All Activity

This stream auto-updates   

  1. Past hour
  2. If you intended to get me riled up ra.ra, I congratulate you on your excellent work. I installed those 24uF Solens in both my AR9's and AR90's UMR circuits. If you want to see where this is all written up, see the thread, AR90 Crossover Recapping - Taming the UMR: http://www.classicspeakerpages.net/IP.Board/index.php?/topic/9406-ar90-crossover-recapping-taming-the-umr/ I had a bone to pick with those four Solens for which I paid something like $50 for the lot. So they were either going to make themselves useful ganged together as the woofer shunt cap in this AR915 or find themselves subjected to capacitor "burn-in" over my fire pit!!! The Jantzen Cross Caps while also somewhat problematic for me in the AR9 and AR90, seem to be OK in the AR915 24uF spot with the Dayton F&F bypass cap and 2 ohm attenuation resistor installed. If you want to know why I used Dayton F&F bypass caps (at under a buck a piece), take a look at the May 29th post from DavidR in this thread, Latest Acquisition - AR91s: http://www.classicspeakerpages.net/IP.Board/index.php?/topic/8163-latest-aquisition-ar91s/&page=2 So that is the saga of how I ended up using 15 caps and an extra resistor in my AR915.
  3. 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.
  4. Tom Tyson has documented and discussed (and may have owned) AR-3's with serial numbers below 10. I seem to remember numbers like 003 and 006 being mentioned. If Tom doesn't weigh in here, send him a PM. He knows more than anyone else about the early AR-3. Roy
  5. I'll ask another way. I am curious to know of the lowest existing or documented serial number pr of AR3 speakers. Thank you.
  6. Yup, 2270 with the wooden cabinet (WC-22 I believe).
  7. That cap collection is my living room table. A buddy I went to college with takes old tables and re-purposes them into nice tables with bottle caps as the top. It's hard to tell in the picture but there's a clear coat of resin on the bottle caps. It looks like a glass. Most of the records are from my father. I bought a few here and there. I use a USB DAC (Schitt Modi 2 Uber) into my media PC. I have my audio collection ripped using Exact Audio Copy and I use JRiver to manage my collection. I also have some 24/96, 24/192 files that I downloaded from HDTracks as well. I use an Oppo DV-970HD to mainly play my SACD collection which I don't want to re-buy again digitally or figure out how to rip.
  8. the Marantz is looking good as well! 2270? welcome
  9. Today
  10. Welcome to the CSP forum, Slugger, and you've got a great looking set-up there. Chopin, Coldplay and Lee Morgan - - quite a range of taste in music, and a very nice cap collection, too.
  11. I will always applaud the resourceful use of available parts-at-hand, but nevertheless, it must be asked: exactly why were the Solen caps previously deemed to be "incompatible"?......and why are they now purported to be "evil"? And while there is no evidence to suggest that these speakers are now performing with anything other than spectacular results, I do have to question the wisdom of taking a well-designed, inexpensive, five-capacitor crossover and replacing it with an expensive, fifteen-capacitor version. (Yep....15....count 'em!) My challenge is only based in the lack of KISS methodology applied to this solution. As originally designed, the AR-915 (and 91 and 58s and....) was a terrific loudspeaker even with the original dirt cheap Callins or Temple caps, so I'd be curious to know what the expected level of "improvement" is due to this excessive re-cap effort? https://en.wikipedia.org/wiki/KISS_principle
  12. Attached is the 9 driver configuration of the LST hybrid. The box on top is a white BA CR65. I didn't expect a lot by adding the third CR but in this Holographic configuration it solves the problem of narrow vertical dispersion of the BAs. Previously, listening while sitting was a slightly different than when standing. Now there is no perceivable difference.
  13. Hey guys! I found this forum by searching for vintage audio gear forums. I do IT work in central MA. I have always loved the world of hi-fi audio and have been slowly acquiring components for my vintage audio setup. I have attached some pictures below.
  14. Thanks 🙏🏽 You guys are AmaZing .. bless
  15. Good job getting that goop off of the terminal posts. You sure made good use of the evil solen caps. Looks good and will last a long time. Happy listening.
  16. Good lead Carl. I've bought from them. An outfit I really like is justradios.com in Ontario although, as the name says they are more for the electronic parts than speaker parts but I recommend them. -Kent
  17. A large parts supplier in Canada is partsconnexion. www.partsconnexion.com
  18. ooops. Bienvenue à CSP Partsexpress and Madisound are mail order and may ship to Canada. Or there may be similar speaker building supply outfits up there. Vintage AR on ebay definitely ships to Canada (or send a PM to CSP member RoyC). Michael's is a craft store. Lowes is a "home center" but the duct seal should be available from an electric supply store--it's used to seal electric boxes exposed to moisture. -Kent
  19. Make the best out of your speakers or bring new life into old ones with our fantastic range of speaker cable. Our carefully selected range makes it easy to find the right option for you. Sennheiser HD 4.50 BTNC Wireless Headphone Review
  20. Very helpful Kent ... Thanks brother, I've learned a few things and excited about the process. We don't have these stores you mention being that i'm in Montreal. but i'm sure i can find whats needed... again thanks
  21. I recapped one AR915 which is now in service as the center channel speaker between the AR9 fronts. The AR915 sounds superior to my last center channel speaker, an AR48s. Having drivers essentially matched to the AR9's along with the larger size of the AR915 obviously has helped. The details: - 100uF woofer shunt cap (lower right in photo) is an assembly of four 24uF Solen MKP's plus a 4uF Dayton DMPC plus a 0.10uF Dayton F&F bypass. The Solens were first employed as the 24uF UMR series caps in my AR9's and AR90's but proved incompatible. Had they not been sitting around in the parts bin, I would have gone with a Bennic 100uF NPE. - 40uF spot is a Dayton DMPC plus 0.01uF Dayton F&F bypass. - 24uF midrange spot is 22uF+2.2uF Jantzen CrossCap combo originally tried in an AR90 plus a 0.01uF Dayton F&F bypass. - The other two caps (4uF and 8uF) are Dayton 1% PMPCs plus 0.01uF Dayton F&F bypasses. - The midrange is attenuated -3dB by using a 2 ohm resistor (lower left corner) in series with the 24uF cap bundle. Deciding to install this resistor right off the bat was an educated guess based on a lot of trial and error on the AR9 and AR90 recapping efforts.
  22. it's always nice when you find a decent batch of pots, congrats. Did you reuse the foams on the woofers? I have not been comfortable using them when I have had a choice, especially with a good size basket with only four fasteners. The original pics you posted seem to reveal an inordinate amount of duct seal randomly around drivers and baffle. QC from factory? Air leak test fixes? The "push test" should be as you think, slow response. I really like these 5s, any thoughts on the unfinished pine?
  23. Yesterday
  24. No, there is no functional similarity in those particular circuits. The AR9's bass section crossover is a full-section bass-extension and Q-optimizing circuit because the speaker uses two 4-ohm, 12-inch woofers in parallel. Ordinarily, this would result in less than 2 ohms impedance at frequencies below and above resonance, which would destroy all but one or two power amplifiers trying to power it. The internal, sealed volume of the AR9 is 4.24 cu. Ft (120 liters), or roughly 2½-times larger than a single AR-3a or AR-11. The larger enclosure would also result in over-damping, thus making the speaker sound as though it had even less bass. The two woofers in the AR9 are the same as used in the AR-3a, AR-11, etc. Thus, the AR-9 uses a cleverly designed type of resonant circuit corrects the "Q" and which adds resistance in series with the woofers above and below resonance (the point in which impedance is highest anyway), preventing the very low impedance that would occur with the woofers wired in parallel. The AR9's system resonance is 31.8 Hz., with the -3dB point of 28 Hz., and this speaker is a powerful low-frequency system with few peers. In terms of low-frequency extension, low distortion and frequency-response smoothness, it's still one of the best speakers ever designed. The other advantage of the AR9 circuit is the nearly seamless integration of the two 12-inch woofers with the lower-midrange 8-inch driver. Few listeners realize that when listening to an AR9, you cannot ever detect the 200 Hz crossover frequency or the transition from the woofers to the lower midrange. There is nothing to identify the crossover from the woofers through the lower midrange driver, as it is seems like the output is only coming from the 8-inch driver itself, itself quite an accomplishment by the AR9's engineers. This is very difficult to accomplish, and this is the big issue with subwoofers: integrating the midrange and lower bass with deep-bass reproduction from an outboard subwoofer. --Tom Tyson
  25. Hi David, Huge differences between an air conditioned room on the main floor for example, compared to a basement listening room. I lived with both for a decade and a half each. Upstairs, things like pots and switches stay clean for the longest time. Speaker surrounds last much longer but are eventually doomed no matter where they are. I'm a late comer to your "5" acquisition. What a great find! I had a new pair of 2ax just shortly before the Five was introduced. Back then, I was not in a position to make any changes but I WAS thinking if both were available when I got my pair I probably would have opted for the 5. I could not help but notice that modified Phase Linear 400 in the background. Could you provide some information on the restoration, if you know. Bill
  26. I have spent another week with this system, spending many hours listening and comparing what I hear to AR9s and AR3s. I have been using recordings that, for me, help tailor my speakers to suit my ears. My conclusions to date are: Pros 1. This system is a keeper. 2. Extremely spacious sounding and broad sound field 3. The sound produced is better than my AR9s on big stage recordings such as live concerts but especially Classical recordings that are not mix downs from multi-mike setups. On popular music mixed in a studio I think I prefer the Nines because the soundstage of the hybrid setup seems overly large but the modern tweeters and midranges in the CR65s are better at revealing lower mid- range details, especially in the human voice range, than any of my ARs. I don’t think this is about caps but about modern drivers. I have never heard LSTs but I can imagine they must sound something like this Hybrid system. In addition, this Hybrid system approaches the AR9s in low bass reproduction probably because of the EQ settings and volume on the AR58 Amp. I doubt it is room placement because the speakers are centered along a wall. 4. No speaker attenuators to fiddle with. Absolutely no solder required. No electronic or electrical mods to anything. Complete freedom to aim the speakers any way you choose to achieve the desired effect and absolutely dirt cheap compared to AR9s or LSTs or even unrestored AR3as. Cons 1. WAF. I am not dumping my ARs. This system is in a room of its own where WAF is not an issue. All other systems are in space not conducive to additional amps, equalizers, wires and plugs. If I had the freedom I would try the same setup with my AR9s. 2. If you don’t already have an AR 12 inch speaker there will be additional costs. The attached photos are of the equalizer settings I eventually arrived at to make the sound suit my taste. The key to success seems to be finding the correct setting for the 3 tweeters and 3 mids so they do not overwhelm the woofer output and coordinating the volume settings on each amplifier. If you choose to do this, using similar EQ settings, you will find that the satellite speakers will begin to predominate the character of the sound. You could do this with any small 2 way speakers but they need to at least match the AR linearity. Definitely, most any BA CR series would work and there are many available. Once you find the balance that suits your ear, you can use a master gain control to raise and lower the volume. In the next 2 days I will add a third CR65 per side to assess the effect. I expect to have to rebalance the output of the CR65 package to bring it in line with the bass. We shall see. AR58 EQ CR65 EQ Hybrid LST 2
  27. OK thanks for trying.  I will start another thread and you can delete my post from the Eyeglass thread.

  1. Load more activity