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Thread: Petzl Myo RXP - hot review !

  1. #1
    Flashaholic* Szemhazai's Avatar
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    Popcorn Petzl Myo RXP - hot review !

    Hello boys and girls charismas is coming so you need to know that to buy for a present ? These year Petzl move his lazy corporate ass earlier and we have new headlamp available in December, not in January.

    So, the good old Myo XP revision 3 looks like that :


    From outside, they only change the color, again… But there is nice orange inscription over the collimator “Regulated – Programable” oh yeah

    So what they change inside ??


    Good old temperature-sensitive resistor in the foreground, but in the background there are some mayor changes.

    Nothing unexpected, the SSC P4 U1SW0H star, also better than Myobelt XP that I get yesterday, there was only T2 star.


    Some closer look on the PCB :


    After removing some glue we have a winner of this content :


    4K FLASH 256B SRAM 20SSOP Cypress Semiconductor CY8C24123A-24PVXI microcontroller .
    http://download.cypress.com.edgesuit...8c24223a_8.pdf

    So when we know what is inside, how it works ? Quite good I must to admit, but check yourself :

    From brand new batteries :
    [code]
    V-in I-In P-In V-led I-led P-led Eff.
    high 3,65 0,8215 3,00 3,28 0,8458 2,77 92,5%
    mid 4,28 0,3095 1,32 3,06 0,3086 0,91 69,0%
    low 4,44 0,1709 0,76 2,96 0,1640 0,46 61,2%
    boost 3,63 0,8522 3,09 3,29 0,8608 2,83 91,5%
    [/code]

    From freshly charged NIMH’s
    [code]
    V-in I-In P-In V-led I-led P-led Eff.
    high 3,50 0,7431 2,60 3,25 0,7183 2,33 89,8%
    mid 3,84 0,3070 1,18 3,05 0,3026 0,92 78,3%
    low 3,97 0,1590 0,63 2,96 0,1593 0,47 74,7%
    boost 3,45 0,7562 2,61 3,26 0,7483 2,44 93,5%
    [/code]

    Only 16% difference in led power in the boost and highest mode and almost no difference in lower modes. 700+ mA in high mode looks quite impressing compared to almost 300 mA that you can remember from Myo XP . According to the manual - high mode (default 10 - 140 lumens) is unregulated, mid (default 6 - 51 lumens) and low (default 4 - 25 lumens) are regulated.

    [code]
    Level Brightness Range Time* Time** Reg.
    1 8 lumen 23 m 35 h 95 h +
    2 13 lumen 28 m 22 h 70 h +
    3 17 lumen 39 m 16 h 65 h +
    4 25 lumen 45 m 10 h 60 h +
    5 34 lumen 56 m 4 h 58 h +
    6 51 lumen 60 m 3 h 56 h +
    7 59 lumen 64 m 2 h 55 h +
    8 71 lumen 72 m 1 h 54 h +
    9 85 lumen 77 m ? h 52 h no
    10 140 lumen 97 m ? h 50 h no
    Boost 160 lumen
    *Regulated lighting
    ** Total battery life
    [/code]

    Ok, now some beam shots Myo RXP vs Myo XP .

    On high


    mid


    low

    Last edited by Szemhazai; 01-24-2009 at 04:51 PM.
    Light-Test.info - bike light’s & Headlamps comparison site. - In polish but picture says everything
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  2. #2
    Flashaholic nzbazza's Avatar
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    Default Re: Petzl Myo RXP - hot review !

    Santa Claus must have come early in your part of the world!

    Thanks Szemhazai for the detailed review, a very desirable headlamp.

    All I want for christmas is nice bright light....
    Is that a torch in your pocket or are you just pleased to see me?

  3. #3
    Flashaholic
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    Default Re: Petzl Myo RXP - hot review !

    Small heat dissipator

  4. #4
    Flashaholic* Szemhazai's Avatar
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    Default Re: Petzl Myo RXP - hot review !

    Light-Test.info - bike light’s & Headlamps comparison site. - In polish but picture says everything
    Light-Test.info Facebook Fanpage - get in touch or check my latest work.

  5. #5
    Flashaholic* hopkins's Avatar
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    Default Re: Petzl Myo RXP - hot review !

    I like it! Good review.

    Wonder if the micro controller chip would survive an EMP ?
    How funny would that be if only our incandescent flashlights worked
    'the day(night) after' .

  6. #6

    Default Re: Petzl Myo RXP - hot review !

    Hi Szemhazai! Just got your advice about this headlamp. Are there any big differences between the RXP and the XP? It looks like this is a pretty complex lamp (with adjustable settings, etc). Do you think regulars like me could figure it out?

    Any ideas what battery life would be with rechargeable AAs?

    Thank you!

  7. #7

    Default Re: Petzl Myo RXP - hot review !

    Sorry, but which light is which in the beamshot photos?

  8. #8
    Flashaholic* Szemhazai's Avatar
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    Default Re: Petzl Myo RXP - hot review !

    snoboy on the left is RXP, on the right XP.

    RMS, if you will read the manual you shouldn't have any problems with customized settings. Battery life highly depends on chosen light level.
    Light-Test.info - bike light’s & Headlamps comparison site. - In polish but picture says everything
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  9. #9
    Unenlightened
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    Default Re: Petzl Myo RXP - hot review !

    HI RMS

    Petzl Myo RXP is specifically designed for rechargeable batteries so you can use anything in it and its a doddle to use though the buttons are a bit small for gloved hands!. interesting approach to wide beam, narrow beam with the diffuser unfortunately no LED lamp other than lenser can use a moveable lens
    as LED Lenser patented the concept!!!

    Ps awsome review

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