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  • Tripath?

    I recently purchased one of those Lepai amps (lp-808) and was curious if anyone could tell me if it uses a tripath chip?




  • #2
    Re: Tripath?

    Nope, I think that one uses a Philips chip.
    Don't listen to me - I have not sold any $150,000 speakers.

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    • #3
      Re: Tripath?

      I could be wrong but I thought only models like TA2020 (or advertised as Class T) used the tripath chip, and usually they say on the top of the case something like "This amplifier uses tripath power IC".

      I was also under the impression that some of the LP models used Toshiba, Sanyo, or Phillips chips. Most of the dis-assembly pictures I've seen of Tripath models in the 20W X 2 range have an upright heatsink in the middle of the circuit board like the picture below. Can you make out any info on that chip at all?

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      • #4
        Re: Tripath?

        It reminds me of an ST Microelectronics power apm chip, the TDA 7293, but it doesn't look exactly the same (the back plate doesn't appear to extend past the chips plastic body).

        http://www.st.com/stonline/products/...44/tda7293.pdf
        Jay T
        http://sites.google.com/site/lhwidgetssite/home

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        • #5
          Re: Tripath?

          Originally posted by Fairlane64 View Post
          I was also under the impression that some of the LP models used Toshiba, Sanyo, or Phillips chips.
          It's probably the Sanyo LA4625. That's what they use in the -838; it's got the right number of pins; and it looks like the outputs have the Mylar .1uf caps with 2.2ohm resistors per the Sanyo data sheet:

          http://www.datasheetcatalog.org/data...f_e/LA4625.pdf

          Distortion specs for the LA4625 are so-so by car amp standards. The 40-year old op amp (JRC4558) for the tone controls could be upgraded.
          Free Passive Speaker Designer Lite (PSD-Lite) -- http://www.audiodevelopers.com/Softw...Lite/setup.exe

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