Thanks for the input. The mini-dsp probably has enough processing power but the form factor is probably not what I am after. My preference is something with a standard rack mount and an IEC power inlet - not a wall wart.
I am familiar with the Driverack 260 and lower models and they would work but I would prefer not have all the control buttons available. I realize it can be locked out but I sort of want something that is just a "black box" to discourage part time sound guys from messing with it. To some extent a unit with "euro-block" connectors rather than XLR connectors on the back might help in this regard as it won't be quite as convenient to just bypass the unit.
This will live in a portable SKB rack along with the 70V amps. It will mostly be stored in a climate controlled building and then will be hauled out into the elements for actual use.
Temperatures in the summer could be 100F and in the fall and winter there it could be 20F or warmer with high ambient humidity a posibillity.
Are the "install market" DSP's really that sensitive to environmental conditions for temporary use? Or is that a spec based on 24x7 use for years on end?
I have had most of my audio gear out in a variety of weather for extended periods and never had anything shut down due to temperature or moisture except the iPads which thermal out if you leave them face up in the sun.
Yes, some are very sensitive.
Almost all electronics are quite sensitive to heat. The ratings are based on components used for cost, meeting the warranty period, etc.
I have had laptops shut down due to heat outdoors, in the shade with the only thing they were doing being playing tracks back. High ambient rated devices cost much more than others. Check out the cost difference for standard heat rated computer switches and extreme duty.
That said, Ashly DSP has been very solid for us even in extreme use, 24/7, sometimes exceeding 100 degrees F for days at a time. We have experienced the most heat related failures with Symetrix even when used in temperature controlled environments. We also use a great deal of BiAmp, BSS and QSYS installed with very good track records but none in the same high temp environment like the Ashly's so I can't comment on a real world experience in higher heat for them.
The higher the heat, the lower the life of the electronics. Approximately every 18 degrees F or 10 degrees C increase in temperature cuts life expectancy in half.