Questions about HTIB's

Discussion in 'Playback Devices' started by Tom Martinez, Jun 1, 2005.

  1. Tom Martinez

    Tom Martinez Auditioning

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    I have seen many HTIB's displaying 1000watts of power or 800watts of power...

    My question to you guys is what the difference is between, say an Onkyo 502 receiver with a pair of good speakers vs. a 1000 watt HTIB from Panasonic, etc.

    I know soundwise, the Onkyo 502 with a good speaker set will blow away the HTIB any day of the week, but how do these HTIB's get a wattage rating of 1000watts or 600watts?

    I work at a big box retailer and am still fairly new, but I have been wondering why this is so. You have a 1000watt panny system for $342 yet have a 770watt 7.1 Onkyo at $1345 (Onkyo TXNR901)...?????
     
  2. JeremyErwin

    JeremyErwin Producer

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    hmm. Some tricks might include
    use of 6 ohm resistors
    add in the (powered) subwoofer
    test the outputs with a 1 KHz tone instead of a 20Hz to 20kHz sweep
    increase the acceptable THD.
    test the speaker outputs one by one instead of five or seven at once.
    skimp on the prepro section.

    Supposedly, the onkyo htib receivers are rebadged versions of the onkyo stand alone receivers. But the claimed power output of the hts-770 is 130 Watts. The receiver component is believed to be similar to the TX-SR502, which is rated for 75 Watts.

    Both ratings are for 8 ohm loads. Both specify a maximum THD of 0.08 %. The HTS-770, however, is tested with a 1KHz tone instead of a sweep.

    It's possible that the TX-SR502 is also extremely good at amplifying 1 KHz signals, but less adept at amplifying say, 4000 Hz signals, so that a 130 Watt 1KHz sine wave might be reproduced with 0.08% THD, but a 130 Watt 4KHz signal might be reproduced with a THD of say, 1.0%

    But, I'm speculating.
     
  3. JeremyErwin

    JeremyErwin Producer

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    but another source says that the 770s amp was tested to 130 watts with a 20-20KHz sweep. Ah well.
     
  4. Tom Martinez

    Tom Martinez Auditioning

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    makes lots of sense, on the box themselves they specify at 1000watts at 1khz, vs. their output of say 300watts at 20Hz-20kHz.

    Thanks a lot guys, really appreciate the info!
     
  5. gene c

    gene c Producer

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    And don't forget that 1000 watt rating includes the 220 watts from the sub, which is probably a little optimistic as well. In any event, Onkyo's htib receivers still seem to be the best of the bunch with Yamaha a close second.
     

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