It has been about five months since my first bass drivers replacement and it looks like I'm going have to do it again.
First time I blew them, when driven with my ignorance, just out of curiosity pushed "unity gain" on my new BAT preamp. About 1000W of pure power went through speakers for a few seconds. Panels seemed to have no problems with such a load but bass drivers membranes almost jumped out of the cages. Ok, my fault.
Since than I've never reached unreasonable volume levels but today I've noticed familiar sounding buzzing coming out of bass drivers. OMG, Again!
But why?
In my small listening room reaching hi volume levels is not a problem and I do not think I ever reached 400W (according to specs of vistas). Measured peaks at 97db, small room 200sf and about 8ft from speakers. Assuming 90db vista sensitivity and listening distance to reach even 100db I would use only fraction of amp power.
Power amps I'm using are monoblocks Musical Fidelity 750K with massive reserves of power, Krell KAV-280p and Marantz SA-11S1.
Somebody can explain me what is wrong, or maybe I'm missing something?
Thanks
First time I blew them, when driven with my ignorance, just out of curiosity pushed "unity gain" on my new BAT preamp. About 1000W of pure power went through speakers for a few seconds. Panels seemed to have no problems with such a load but bass drivers membranes almost jumped out of the cages. Ok, my fault.
Since than I've never reached unreasonable volume levels but today I've noticed familiar sounding buzzing coming out of bass drivers. OMG, Again!
But why?
In my small listening room reaching hi volume levels is not a problem and I do not think I ever reached 400W (according to specs of vistas). Measured peaks at 97db, small room 200sf and about 8ft from speakers. Assuming 90db vista sensitivity and listening distance to reach even 100db I would use only fraction of amp power.
Power amps I'm using are monoblocks Musical Fidelity 750K with massive reserves of power, Krell KAV-280p and Marantz SA-11S1.
Somebody can explain me what is wrong, or maybe I'm missing something?
Thanks