Yama P2201 I switched it on heard a thump speakers blown

g7trader
g7trader Posts: 39
in Basic Hookup/Wiring Questions

Dont worry the speakers were only Beovox S30.

The loud thump was not bassy but more of a midrange sound.

What is wrong with this Yamaha P2201 and how do I fix it?
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Answers

  • tonyb
    tonyb Posts: 32,981
    Might be best to tell us first how you hooked everything up.
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  • g7trader
    g7trader Posts: 39
    Hooked up everything the normal way as usual
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  • motorstereo
    motorstereo Posts: 2,142
    I don't believe there's a speaker relay on that model. Use a multimeter and check for dc voltage at the speaker terminals.
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  • verb
    verb Posts: 10,176
    edited October 2018
    Hey great title to this thread! I had to chuckle when I first read it. Sorry for your loss! :smile:

    Seriously we need more details. We’re here to help.
    Basement: Polk SDA SRS 1.2tl's, Cary SLP-05 Pre with ultimate upgrade,McIntosh MCD301 CD/SACD player, Northstar Designs Excelsio DAC, Cambridge 851N streamer, McIntosh MC300 Amp, Silnote Morpheus Ref2, Series2 Digital Cables, Silnote Morpheus Ref2 Series2 XLR's, Furman 15PFi Power Conditioner, Pangea Power Cables, MIT Shotgun S3 IC's, MIT Shotgun S1 Bi-Wire speaker cables
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  • g7trader
    g7trader Posts: 39
    Which details do you need?
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  • mhardy6647
    mhardy6647 Posts: 33,894
    Check for DC on the outputs. A bad driver or output transistor could be passing all or part of one of the DC "rail" voltages straight to your speakers, with catastrophic results.

    The other, very real possibility, that comes to my mind is that there's a severe, but transient, imbalance in the power supply at turn-on that results in a very low frequency (or DC) voltage before the amp stabilizes. Many solid state amplifiers have relays to protect the speakers from such things, but yours apparently does not. In such cases, speakers make excellent fuses (unfortunately).
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  • g7trader
    g7trader Posts: 39
    How do i check dc voltage? Its time I learned how to use a multi meter....
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  • mhardy6647
    mhardy6647 Posts: 33,894
    edited October 2018
    g7trader wrote: »
    How do i check dc voltage? Its time I learned how to use a multi meter....
    http://audiokarma.org/forums/index.php?threads/amplifier-distortion-dc-offset-and-you.5634/

    No signal applied to amp, no speakers connected, amp output to speaker terminals "on".
    Measure for DC voltage across each channel's output terminals. Red lead of DMM to positive terminal, black to negative. Value should be very close to zero volts (see the AK sticky for info).

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  • tonyb
    tonyb Posts: 32,981
    Take it to a qualified repair shop. Get an estimate, then decide if it's worth fixing or used as a boat anchor.
    HT SYSTEM-
    Sony 850c 4k
    Pioneer elite vhx 21
    Sony 4k BRP
    SVS SB-2000
    Polk Sig. 20's
    Polk FX500 surrounds

    Cables-
    Acoustic zen Satori speaker cables
    Acoustic zen Matrix 2 IC's
    Wireworld eclipse 7 ic's
    Audio metallurgy ga-o digital cable

    Kitchen

    Sonos zp90
    Grant Fidelity tube dac
    B&k 1420
    lsi 9's
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  • mhardy6647
    mhardy6647 Posts: 33,894
    tonyb wrote: »
    Take it to a qualified repair shop. Get an estimate, then decide if it's worth fixing or used as a boat anchor.

    This is the best answer of all.
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  • g7trader
    g7trader Posts: 39
    tonyb wrote: »
    Take it to a qualified repair shop. Get an estimate, then decide if it's worth fixing or used as a boat anchor.

    He said £70 but I rather fix it myself.

    I fix all speakers a Beogram 4002 and a few other repairs by luck.

    My Dad found two dead capacitors probably using a multimeter but he is psycho and has bad communication skills he used tippex and wrote all over the amp 'don't use will kill speakers'

    If anyone wants to see photos instagram same username.
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  • mhardy6647
    mhardy6647 Posts: 33,894
    edited October 2018
    "Haven't used a DMM" + "fix it myself" =

    85idh13x7has.png

    Spend the 70 quid & get it properly repaired and calibrated. The P2201 is probably a worthwhile investment for repair.
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  • tonyb
    tonyb Posts: 32,981
    Spend the coin, fixing the amp, or spend more coin fixing the speakers. Your call.
    HT SYSTEM-
    Sony 850c 4k
    Pioneer elite vhx 21
    Sony 4k BRP
    SVS SB-2000
    Polk Sig. 20's
    Polk FX500 surrounds

    Cables-
    Acoustic zen Satori speaker cables
    Acoustic zen Matrix 2 IC's
    Wireworld eclipse 7 ic's
    Audio metallurgy ga-o digital cable

    Kitchen

    Sonos zp90
    Grant Fidelity tube dac
    B&k 1420
    lsi 9's
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  • motorstereo
    motorstereo Posts: 2,142
    Even if you fix what's broken it's still an amp with no dc protection and still capable of ruining speakers or worse yet starting a fire. I say chalk it up to experience and use this as excuse to find a better amp.....preferably one that isn't a fire hazard.
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  • tonyb
    tonyb Posts: 32,981
    motorstereo wrote: »
    Even if you fix what's broken it's still an amp with no dc protection and still capable of ruining speakers or worse yet starting a fire. I say chalk it up to experience and use this as excuse to find a better amp.....preferably one that isn't a fire hazard.

    Now what fun would that be ? :)

    Hook it up to a Monoprice amp in unison and you may have created your own particle smasher.
    HT SYSTEM-
    Sony 850c 4k
    Pioneer elite vhx 21
    Sony 4k BRP
    SVS SB-2000
    Polk Sig. 20's
    Polk FX500 surrounds

    Cables-
    Acoustic zen Satori speaker cables
    Acoustic zen Matrix 2 IC's
    Wireworld eclipse 7 ic's
    Audio metallurgy ga-o digital cable

    Kitchen

    Sonos zp90
    Grant Fidelity tube dac
    B&k 1420
    lsi 9's
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  • g7trader
    g7trader Posts: 39
    This is the best there is better sounding than my Pioneer SA-9500, Rotel RX802 and Philips black tulip
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  • codycatalist
    codycatalist Posts: 2,662
    The early Adcom GFA series don't have relays either. I like to live dangerously.
    Just a dude doing dude-ly things

    "Temptation is the manifestation of desire which equals necessity." - Mikey081057
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  • mhardy6647
    mhardy6647 Posts: 33,894
    ... like the ol' Flame Linears.

    :)


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  • mdaudioguy
    mdaudioguy Posts: 5,165
    g7trader wrote: »
    If anyone wants to see photos instagram same username.

    Ah, so you sell Hi-End Audio Equipment on eBay...

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  • FestYboy
    FestYboy Posts: 3,861
    g7trader wrote: »
    This is the best there is better sounding than my Pioneer SA-9500, Rotel RX802 and Philips black tulip

    Lives in England, doesn't speak English... Or at least can't construct a proper sentence.

    Loving the idea that his repairs are done with luck... :|
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