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  1. Michael R Price

    Altering the Exodus Audio LCR Kit

    There is a very good chance the Ushers will sound better. It might be a bother trying to come up with a crossover modification to substitute tweeters. The higher sensitivity does not matter since it would just have to be padded down to match the woofers. Just use the GR tweeters in a different...
  2. Michael R Price

    Watts and speakers

    If you connect a voltmeter in AC mode across the speaker terminals, you can get a rough estimate of average power: voltage squared divided by the approximate impedance of the speakers. (Example, you have 4 ohm speakers and the voltage readings fluctuate around 5 V AC... 5^2 / 4 is about 6...
  3. Michael R Price

    Small monitor sugestions

    With one of those commercial crossovers it might be tough to get flat frequency response. I don't know which are best at adjustments to deviate from textbook filters. You could probably get away with using one for a speaker where the drivers overlap a great deal (so long as you can still take...
  4. Michael R Price

    Small monitor sugestions

    I say go for it... just pick any drivers you want and then you can figure out the crossover. It will be fun even if the result is not worth it on the basis of performance for price alone. And you'll always be able to keep/modify the crossover if you change the speakers to something larger (which...
  5. Michael R Price

    Small monitor sugestions

    Sounds interesting... just curious, why do you want to actively cross over a mini-monitor?
  6. Michael R Price

    Burnt out Adire Audio ACD1 Tweeter

    Matt, they probably have some still around, try calling them at 425-778-9663. Also the Eminence APT-50, available at Parts Express part number 290-530, may be a "close enough" replacement. Hopefully some people who know more about the Adire HE kits can clarify.
  7. Michael R Price

    Need Advice on Improving Speaker System

    Right, I have no idea why you would get noticeable noise unless something's damaged (cable, receiver input section, etc). The noise level could have nothing to do with the overall quality of sound from those components. Fixing the noise problem might just reaffirm the need to upgrade the...
  8. Michael R Price

    Need Advice on Improving Speaker System

    See if you can go listen to some different speakers, those are the most apparent piece even in a PC based system. If you like the speakers you have, try some different setup arrangements. Even pretty mundane speakers can sound big and open if you give them space. The next step in an upgrade...
  9. Michael R Price

    Finally, my 7.1 full bi-amp experiement

    John, sounds like a reasonable plan; just be aware that it may be hard to improve on the passive filters with your current approach. Have some fun with it. MLS software generally collects data at a very high resolution with linear frequency spacing (example: 32768 tap FFT on 48KHz sampled...
  10. Michael R Price

    Finally, my 7.1 full bi-amp experiement

    John, using the oscilloscope provides you with far too coarse a resolution (I would consider 1/6 octave a practical minimum). As Chu mentioned, the unpredictable room reflections will swamp direct output from the speaker in steady state tests, giving you mostly useless results. You would also...
  11. Michael R Price

    Speaker Watt Ratings

    The ratings for speakers also mean very little. Ignore the specific power ratings and trust your common sense: heavier components and larger speakers are usually more powerful, and any noticeable distortion is a sign of the equipment's limitations that you shouldn't try to surpass.
  12. Michael R Price

    Finally, my 7.1 full bi-amp experiement

    I wish I could, but I'm on summer break now and my equipment (including my active stereo system, the computer with LspCAD) is stored in Massachusetts. :) Vinh, that is a really nice offer. We'll figure something out. John, what do you mean by "standard Oscope test?"
  13. Michael R Price

    Finally, my 7.1 full bi-amp experiement

    John, If you have a calibrated microphone, then just load up Speaker workshop or some other MLS measurement software into your computer and you're golden. I wouldn't try designing active crossovers by ear or even with something like a Radio Shack meter or scope, but once you get a good...
  14. Michael R Price

    Biamping - what would give better results?

    Chu, I have had the active crossover page up since last summer and I've posted it here and at some other forums, but I haven't posted it on newsgroups. So far, one other person is building a crossover using my design. I wonder if that speaks more about the very specific nature of my project...
  15. Michael R Price

    Biamping - what would give better results?

    Adrian, In my experience passive bi-amping lets you mix the sound of two amplifiers: so if you had a small Class A amplifier it would be useful to use it as a tweeter amp along with your PA2000's for woofers. When using identical amplifiers, it doesn't seem to me there would be much...
  16. Michael R Price

    wire gauge

    Lower gauge wires are thicker, which is generally better. 12 and 14 gauge are about right for normal speakers. 16 gauge is a little thin especially for long runs, and 10 gauge might be useful for a passive subwoofer or something.
  17. Michael R Price

    Biamping - what would give better results?

    If you can do it right, active bi-amping is the real deal. Even with "only" 45 watts per channel. However, doing so is usually not worth the trouble. Adrian, did you have a particular crossover setup in mind?
  18. Michael R Price

    Ascendant Audio closeout

    That makes sense, I'm glad it's not such a big deal in reality. Dan's post on the Sound Illusions forum place explains it perfectly. I just had the feeling it was a big problem after reading the posting on the Ascendant page. It seems they've had their new design in the works anyway so it...
  19. Michael R Price

    Ascendant Audio closeout

    Wow, what prompted this, was it really just the one statement by Dan? Or have Chad and company been busy working on their new motor technology all along and it's convenient to replace XBL with it?
  20. Michael R Price

    News on Adire product changes.

    I wonder what the actual price-to-us will be for these drivers? I mean, it will probably be lower than the stated MSRPs, but how much lower?
  21. Michael R Price

    Is the Bang & Olufsen BeoLab 5 the best speaker made today?

    My advisor this year knows the guy who designed the Beolab 5, Dave Moulton. He certainly knew what he was doing, and I trust that it's a competitive "statement" speaker. I have personally heard a big MBL speaker which used a similar idea (speaker elements pointing up into round diffusors), and...
  22. Michael R Price

    why do Dolby Digital sountracks sound so GOOD?

    I think it's just the mixing and recording quality, especially the dynamic range. Isn't it much more consistent for movie soundtracks than for most music CDs?
  23. Michael R Price

    Am going to try a sealed DIY sub-HELP!

    Bigger is better because the box size corresponds to efficiency at low frequencies; even though you can theoretically obtain the same response from any box size using the LT circuit, the larger box will demand less power for a given output.
  24. Michael R Price

    anyone own or have auditioned kit51's?

    Yeah, they're actually getting rid of the Kit81 and 281 in favor of the new 61 and 261 which are more expensive. I don't know why, since there's still a market for them. Anyway, everyone and their mother has some kind of minimonitor design out there. There are some particularly interesting ones...
  25. Michael R Price

    anyone own or have auditioned kit51's?

    Philip, I wonder why, but the Kit51 never caught on. Adire's been moving on to kits using their new 6" midwoofer which is supposed to be a jack of all trades. I would hazard a guess that they are similar to the A/V-1, maybe with a little better midrange, but noticeably less extended bass. There...
  26. Michael R Price

    Speaker suggestions $1500/pair

    Right, I agree. I would recommend a subwoofer anyway, since it's still worthwhile even with the relatively big but not-full-range speakers like A/V-3s. There are fewer and fewer speakers these days that can sound really satisfying without one. At $1500 for the system, maybe it will suit the...
  27. Michael R Price

    Speaker suggestions $1500/pair

    To say the GR speakers are full-range enough for music, just like any other speaker with 6" (and most with 8") woofers, is really open to interpretation. I personally would want something bigger, or use a subwoofer, if spending more than $1,000. But hey, with the DIY type speakers like those...
  28. Michael R Price

    Don't Start A Business If You're Going to Harvard

    If someone did that here, they wouldn't get any business, but it makes sense that Harvard can successfully support it. :)
  29. Michael R Price

    What can I do without drivers in hand?

    The word "nominal" in the receiver ratings doesn't mean they can't drive lower impedance loads. Unless it's a real piece of junk or has overly stringent protection circuits, any receiver is capable of driving 4 ohm loads. Better amplifiers sound better, but I wouldn't let impedance requirements...
  30. Michael R Price

    News on Adire product changes.

    Holy cow, that's great. Is the Maelstrom still going to have relatively high efficiency?
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