When is the last time that you've changed or at least checked your output tubes ? Can you give us an example of what types of bands / music send your amps into "thermal shock" ?
For the record, with the sensitivity levels that you are talking about with those speakers and that size room, you'll need about four times the amount of power that you have to actually start "rocking". Either that or you'll have to find some speakers that are at least 95 dB's efficient and 8 ohms.
In my opinion and experience, you can't pressurize a room that size with 300 wpc running full range unless you have VERY efficient speakers, a LOT of drivers or preferably both.
Given the info that you just added to this thread, i'd start looking at the Montana's and the Legacy's. I don't know if you'll like the sound or imaging of either of these, but they should give you the volume that you're looking for. The Dunlavy's just aren't efficient enough for what you want to do and the amount of power that you have. Picking up some LARGE, very HIGH powered subs might also help out quite a bit, as it would relieve a LOT of strain and current draw on the tubes. Sean
>
PS... Let me know when you've given up hope, picked up four Klipsch Heresy's and are ready to start modifying them : )
For the record, with the sensitivity levels that you are talking about with those speakers and that size room, you'll need about four times the amount of power that you have to actually start "rocking". Either that or you'll have to find some speakers that are at least 95 dB's efficient and 8 ohms.
In my opinion and experience, you can't pressurize a room that size with 300 wpc running full range unless you have VERY efficient speakers, a LOT of drivers or preferably both.
Given the info that you just added to this thread, i'd start looking at the Montana's and the Legacy's. I don't know if you'll like the sound or imaging of either of these, but they should give you the volume that you're looking for. The Dunlavy's just aren't efficient enough for what you want to do and the amount of power that you have. Picking up some LARGE, very HIGH powered subs might also help out quite a bit, as it would relieve a LOT of strain and current draw on the tubes. Sean
>
PS... Let me know when you've given up hope, picked up four Klipsch Heresy's and are ready to start modifying them : )