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garyrc

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About garyrc

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  • Location
    The Milky Way
  • Interests
    Music, audio, film, psychology, psychology of film, philosophy, religion, history, mythology, audio electromechanical mythology.
  • My System
    Main room: 2- 1982 Klipschorns with K-401 fiberglass mid horn upgrade (1987), and AK-4 Klipschorn stock upgrade (2006), Modified Belle Klipsch (2005) center channel with K401 horn in an enlarged hi hat, flush mounted, behind AT wall fabric, buried in the wall between flanking Khorns, 2 NAD C- 272 ss 150 wpc stereo power amps, Marantz AV7005 AV preamp/processor, Heresy II surround speakers driven by 1/2 NAD C-272 and a Yamaha 135 wt amp, NAD C-542 CD player, OPPO BDP-93 CD/SACD/DVD/Blu-ray player, Klipsch RSW-15 subwoofer, for movies only, Panasonic projector, 130" true width 2.35:1 projection screen (141.3" diagonal).

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  1. Isn't 10K a little high? As you say, you will determine this empirically. My guess as a starting point might be just above the highest fundamental (4,186 Hz on the piano?), or split the difference?? The JBL Paragon crossed over to the 075 supertweeter at 7K. The presence/absence of the tweeter was quite audible, yet didn't screw up the fundamentals. I think at the HiFi fair they ran it turned up quite a bit.
  2. I've never heard them. Do you have a link to an article or info? Actually, in a liquor store I was once in, there were 2 Radio Shack supplementary tweeters of the kind Stereophile added to the Bozak Concert Grand for their review. They were just plunked on a couple of shelves on opposite sides of the store (not near the main speakers), among all those diffusing/reflecting bottles! They did sound fairly spacious and airy, I guess. Of course there were speakers in the past that were rear firing; Bose 901, some JBL Aquarius (as the name implied, they sounded best with a little vegetable aid), the Empire Royal Grenadier, etc. PWK's response to these was that it would be hard to avoid a diffuse, reverberant field if the listener was far enough from the speakers. He considered normal listening distance to be 16 feet. I found that to be true in fairly "live" rooms, like my parents' old living room. Here is a Realtor's picture of it, using the customary, deceptive, wide angle lens. Back when I listened in that room, it had a large Persian rug, and diffusing wooden Venetian blinds, so it wasn't that "live" then. The sound was marvelous! So ... when my wife and I moved into a new house, we built a music room/home theater of the same dimensions as my parents' room -- and, by coincidence, PWK's. The sound is quite good, but not as spacious sounding as my parents' living room. We are gradually removing absorbing materials from the room, bit by bit, while leaving the diffusers and vases, etc. in place. I heard of a guy who aimed the big mid/treble horn of the Altec A7 (I see the number 511B gliding through the mist of memory) toward the wall.
  3. The Virus won't get you there! Is that near Joshua Tree National Monument or 29 Palms? A friend and I made a short film there when we were in our freshperson year in college. Great rock formations and friendly lizards. Wow, is that a Metregon? What drivers? How does it compare with any Klipsch you have (had)? I had a TD125 with SME and Ortophon moving coil (the one coded "light," because the transformer -- or ss amp for moving coil -- was separate so as not to make the shell heavy). Probably the best sound I've ever had.
  4. I, too, think head wear or dirt on just one channel is not likely, but, just for the heck of it, run a cleaning tape through it about 5 times. If that doesn't work, inspect the internal wiring leading to the recording head (I assume there are separate record and play heads on your unit. Someone else, perhaps a bench tech, will take you from there. P.S. Avoid cheap tapes that shed or stretch. Back in the day, shorter tapes were sometimes thicker than long ones, and good brands were Maxell, Ampex, Scotch (3M), TDK, etc. The cassette medium was a big compromise, but not as much of one as 8 track. Some Metal Tapes were rather high fidelity This may be obvious, but you may have a bias switch and an EQ switch. EQ affected playback only, but bias needed to be set for the tape type before recording.
  5. Grieg's Peer Gynt on 78 rmp disks. Walt Disney's Fantasia in the theater (first re-release)
  6. I don't know if we are getting one. If we do, and we are doing O.K., we will look for a local family who needs it more, or look for a charity. Everyone should spend it, somehow. I'm confident that the needy will do that. Everyone else should spend it to help the economy.
  7. For years and years there was a marvelous, probably homemade, old speaker up on a high shelf next to the always-open doorway of a bookstore called RamBam (i.e. Moses ben Maimom, aka Maimonides) on the corner of Dwight and Telegraph in Berkeley. Later, the bookstore was sold, and became Shakespeare and Company. The speaker stayed, playing away, entertaining all of us who would stand in front of the magazine rack reading I.F. Stone's weekly, Commentary, and the like, for free. The grille cloth started out yellow. By the time I left the area (after about 40 years) the part of the grille cloth that was in front of the woofer was black with dust, dirt, tobacco smoke, that other smoke, car exhaust from the street that was right there, and from time to time, tear gas, that had been sucked in by the magnet. Hopefully, the speaker with the dirty yellow grille with the big dark circle in the center is still there.
  8. I think the going price is about $75.00 to $100.00; calibration does not come cheap. You may want one that allows you to enter the calibration their lab derived when measuring the mic into REW (which is free).. Look for a USB mic so yon won't need a mic preamp (I think). There is an LVC thread on this. I recommend reading it. https://www.minidsp.com/products/acoustic-measurement/umik-1
  9. If anyone has a chart or something that compares these, I'd appreciate a comparison of the sensitivity and subjective sound of the T35 round magnet, K77, K77M, K77F (and D). Thanks.
  10. They aren't 6 feet apart! I know, I know, they have 24 feet between them.
  11. Are they? For 5.1? I'd try the minimum first. Make sure that all channels, including surrounds, are at the same volume. Use an SPL meter. The Pink Noise usually used to balance is band limited to 500 to 2K, so, since this is midrange, a Radio Shack meter is OK. If need be, turn up your surrounds. I find that the amount of surround on different movies varies considerably (!) from nearly none to overwhelming. TV is another varying hare. So you might need 3 different settings 1) Average movie level, 2) Average TV level 3) Average multichannel disk music level (have you tried these? Many good ones from many classical to Pink Floyd; I prefer classical, but their surround varies a lot). I was totally against adding surround to disks that were strictly 2 channel, until a friend persuaded me to try it by using PL II. It really opens up many classical recordings, so I use it about 60 -75% of the time with 2 channel disks). If you decide to put out the $$$ for a new AVR, I'd think NAD would be good. I use Heresy IIs for surrounds, and since my 5.1 system is mix and match, to a degree (see my signature), I use 1/2 of a NAD power amp with one Heresy II, and 1/2 of a Yamaha power amp with the other Heresy II. The one with the NAD sounds better. Other NAD power amps sound great through my Klipschorns and Belle Klipsch. I don't know about their AVRs, but they have a good rep.
  12. How much kick is kick? With your room and your speakers, For a gentle kick, but with some authority, maybe 50 real watts would be O.K. For realistic kick that sounds like a live kick drum, you might need between 100 and 200 real watts. ... plus a darn good high powered subwoofer that comes in at about 60 Hz or 40 Hz and below, maybe down to 20 Hz. KICK DRUM
  13. You should get enough power, unless you really do want your head to explode. Based on the in-room sensitivity figures, your integrated amp and the RF7s should provide at least 108 dB peaks at 13 feet in a normal room with a true 70 watts per channel, even with a fudge factor built in. I've heard the concerns about the impedance dips causing the RF7s to need more "juice" than the specs imply. I tend to trust Klipsch that the RF7s are 8 ohm compatible, but if you want to go with a big power amp, I'd stick with McIntosh, or perhaps one of the NADs that claim to be optimized for "4 or 8 Ohms." As you probably know, you'll need to double the power to get a 3 dB increase. This one -- the MC152 -- would give you a 3 dB increase, but I'm not sure it has autoformers: This one -- the MC312 -- would give you a 6 dB increase: If you really want to blow up your head, and you win the lottery (do the second first), McIntosh makes an MC2KW 3 piece mono block that puts out 2,000 watts continuous and up to 8,000 watts instantaneous peak. Of course, you will need 2 complete sets (6 pieces) for 2 channel stereo, and produce super high SPL, but, as PWK once said, you should have a fire extinguisher handy. The 6 piece set can be yours, if you shop around, for about $160,000. `POW'
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