Blown woofer

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wlmdx
wlmdx Posts: 14
edited July 2005 in Troubleshooting
Hi all,

I have 2 woofers blown on my Lsi 15 this week on a different day. My amp is Simaudio i-5 integrated. A few minutes ago, I heard a big "pop" coming from the speakers and the light on the amp came on automatically (the amp was on standby mode,but gets very hot). I immediately shut off the amp and heard another "pop". I turned on the amp again and played some music but noticed that the woofer is making a "clicking" noise. I had the other woofer blown the other day? What is the cause? Do I have a bad amp or I have bad electricity(voltage drop???) Please help!!
Post edited by wlmdx on
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  • F1nut
    F1nut Posts: 49,806
    edited July 2005
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    You've got a bad amp, maybe a DC voltage problem. No way it should be hot in standby mode.
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  • danger boy
    danger boy Posts: 15,722
    edited July 2005
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    is that amp rated to drive 4ohm speakers?
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  • wlmdx
    wlmdx Posts: 14
    edited July 2005
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    The amp is rated to drive 4 ohms speakers. This is the Specifications:

    Type Solid State
    Configuration Dual Mono (partial)
    Power Supply Transformer 0.5kVA
    Power Supply Capacitance 40,000µF
    Class of operation - Preamplifier A
    Class of operation - Amplifier A/AB
    Single Ended Inputs (RCA) 5 pairs
    Input Device Types - preamp J-FET
    Input Sensitivity 300mV - 3.0V RMS
    Input Impedance 14,000 ohms
    Tape Output 1 pair
    Preamplifier Output 1 pair
    Output Device Types - Amplifier Bipolars - 2 per channel
    Output Binding Posts WBT (shielded)
    Output Power @ 8 ohms 70 Watts per channel
    Output Power @ 4 ohms 110 Watts per channel
    Output Impedance 0.04 ohms
    Damping Factor > 200
    Gain Control RBG cs version
    Gain 30dB
    Dynamic Headroom 3dB
    Signal-to-noise Ratio 97dB @ full power
    Maximum Output Voltage 23.5 Volts
    Slew Rate 20V/µs
    Maximum Current - Peak 16 amperes
    Maximum Current - Continuous 9 amperes
    Frequency Response 10Hz - 70kHz (+0/-3dB)
    Crosstalk @ 1kHz -50dB
    IMD unmeasurable
    THD (20Hz - 20kHz @ 1 watt) < 0.1%

    Thanks.
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