Hello!I have been hearing a lot of local reports of the HF driver with the 825 blowing themselves out even on moderate level operation. I always tend not to pay much heed to such reports.To be cautious, I setup a system architect custom panel to monitor all inputs and outputs, and GR meters. the RMS and Peak limiters are set to 1/3 of continuous power, and 3/4th of program power respectively.My partner is now in the hills engineering, last night, midway, he was very impressed with te rig. Loud and hi-fi, without him hitting a single clip or getting the GR into action. However, During the last act, he reports one HF driver has gone down.As of midway today, 2nd and last day, he has lost two more HF drivers, and is now happily running the show of just 1 HF, loud enough to cover the small area. He hopefully will manage though the last act. We have taken some 712's off monitor duty as an SOS.System :4 x STX8252 x ITech 40004 x SRX7282 x ITech 6000Any ideas ?Thank you for the time.Regards,Sidhu
Could be a batch of defective diaphragms in your local pool of cabinets. Need to inspect them to tell the exact cause of death.The 2453H driver used in the STX825 is pretty tough, but with highly compressed music with concentrated HF level above the crossover point it still would be possible to burn them in passive mode with the RMS and Peak limiters set to 1/3 of continuous power, and 3/4th of program.They should be quite loud before they burn, any idea of what levels were being run "A" scale, at what distance?
Sidhu, I take it you are bi-amping the 825s? If so I suspect an error in the entry of the settings into the ITech, barring any product defect.
Preset number 9 was being used.Sidhu
A quick look at file #9 w/ SA shows all devices bypassed or off and a crossover center frequency of 1.2khz.
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