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Peter P.

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About Peter P.

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    Forum Veteran

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  • Location
    Meriden CT
  • Interests
    Cycling, music.
  • My System
    Klipsch Heresy II's (with a powered sub), kg sw Subwoofer, Quartets, kg 2.2's, kg 4.2's.

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  1. Looking at diagrams of the crossover wiring for the Heresy II, it looks like the positive speaker input goes to the NEGATIVE terminal of the tweeter. Is that right? Doing so doesn't put the tweeter out of phase with the other drivers?
  2. A crossover upgrade isn't going to provide more bass. Neither is a receiver. Get a subwoofer. I use a single SVS SB-1000. I'm happy. Heresy's aren't known for playing low so to get that bottom octave, get a sub.
  3. Sounds like the spider for the woofer. Remove the grill and observe both woofers at a level that produces the noise. Does it appear the suspect woofer moves differently? Watch both the cone and the surround. It should be pretty obvious if there's a difference. And go with JohnA's suggestion to swap speakers to see if the problem follows the speaker. Report back.
  4. It's something I've read. search "echoic memory" for one explanation. Here's how I would explain it to audiophiles: Listen to speaker "X" for however long you want. After this listening, wait say, 5 minutes, then you would be given a series of other speakers to listen to (of course, all the parameters would be controlled for volume, material, etc.), switching freely between them. It would be your job to determine which of the series was speaker "X". Unlike our visual memory, our audible memory is significantly less accurate.
  5. This is true. Our audio memory lasts less than one minute. I see no need to replace the capacitors unless they measure out of spec. If they're in spec, they still work.
  6. So what's the difference between a ported speaker and a vented one? It appears one has a tube-like opening (Heresy IV), while the other has a slot (Cornwall). Is there a difference in the audio output? Is port chuffing a potential problem in a vented speaker? I began to wonder whether it would have been cool to have the Heresy IV be a smaller version of the Cornwall and have a front vent vs. a rear port i.e., a smaller version of the Cornwall, and wonder why that approach wasn't taken. The first pair of hifi speakers I had were the B.I.C. Venturi's, with an 8" woofer and a slot at the bottom. As a teenager, I really didn't understand the function or benefit of the slot despite the advertising literature, but now I get it. I also wonder why the Cornwall front vents are three distinct sections rather than a continuous slot. Could it be structural to support the weight of the motorboard? Are the new plastic ports purely aesthetic or do they actually change the vent response? All opinions are welcome!
  7. Thanks for taking the time to write up your detailed comparison.
  8. I'm interested in running an A/V integrated amp solely in 2.1 channel mode so I can take advantage of speaker high-pass filtering (you set your front left/right speakers to small/large, or pick the high pass frequency). I want to provide a high pass frequency to protect my Heresy's below their low frequency cutoff, while using a subwoofer to pick up the bottom octave. Are there any A/V integrated amps that can access the settings via a front panel display, vs. having to via a TV. I don't own a TV and don't care to get one just to set up the amp. Not interested in high end stuff nor do I need a lot of power, but if that's all there is, feel free to mention them. Thanks!
  9. The "diaphramatic absorption" referred to in the video is the same as the "subwoofer isolation system" feet I purchased for my SVS subwoofer. I bought these so less vibration would travel to the floor, and be heard/felt by my condo neighbors. But that vibration is part of what subwoofers add to sound; that tactile sense in electronic music and movie explosions. Other than consideration for neighbors, why get rid of it? As for placing the sub off the floor, and at various heights, it does mitigate floor bounce but will reduce sub output level. And it's somewhat impractical for most of us aesthetically. It would be an interesting experiment nonetheless.
  10. I think it's a very reasonable price. Of course, as long as they work without problems, the only issue would be what condition they are in. For $1600 I'd expect some scratches and so on, but unless they're an eyesore I'd say they're worth it.
  11. Perhaps it's the driver height that creates the sound difference. The Klipschorns' drivers are higher relative to ear height than the Quartets, no?
  12. From the Label on the back of the LaScala's, it's amazing how little current they draw. Usually the fuses are 1.5 to 2x the actual current draw, which means those speakers would draw roughly 2+ amps at most. That's nothing.
  13. Heresy II's for $1200? I think that's insane, although as willand has pointed out, with the introduction of the Heresy IV, prices of the earlier versions are oddly creeping up. I paid $675 for my used pair of 4 ohm Heresy II's, and that was roughly 3-4 years ago, and I thought THAT was high. Personally, I'd keep looking.
  14. I think that's a good litmus test as to whether you're running your sub beyond its capabilities, or beyond your needs.
  15. Measure the capacitors with a voltmeter that can measure for capacitance. You can usually do this accurately with the capacitor in-circuit (disconnect the leads from the specific speaker driver, if possible). The tolerance of the spec on the capacitor is often printed on the capacitor. If not, typical tolerance of an electrolytic capacitor is 20%. So using that as a guide, if you measure a capacitor which is more than 20% outside of its nominal value, then replace it. Otherwise, don't bother.
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