Originally Posted by GeoJustGeo
The ones in REW? What would I be looking for? So far I've only learned how to dial them in to give the best response I can get from them given there location. Anything beyond that is foreign to me.
I wouldn't be too concerned about over driving the V1801s or playing them loud if that's what you like, just because the driver(s) aren't moving a lot doesn't mean they're not moving a lot of air. I've had five V18s in my place, two V00s and three V01s and could push them to extreme SPLs with no ill effects. Yes Compression sweeps in REW are very similar to running a regular FR measurement at the MLP. The objective is to raise the MV in 5dB increments and run sweeps like that until the sub(s) start to compress or stop getting 5dB louder (SPL) with each 5dB of MV raise. This will show you how loud your subs will get before they can't get any louder without compressing.
Here's a compression sweep of two of the V1800s when I had them in my room, they are very similar to a FR sweep, as you can see these are reference capable to 17Hz in my room, they can play 115dB at the MLP, beyond the 115dB compression would most likely begin, but as you can see they are quite comfortable at those SPLs so go ahead and let them rip......................
It's real easy to run Comp. sweeps if your interested, I like leaving the sub's trim where Audy sets them to run the sweeps, using HDMI 4 start with MV at -20B and run a regular All SPL FR sweep, then go to -15dB MV and do the next sweep, continue doing this until you get to -10dB noticing the output levels (SPL), they should raise 5dB per sweep as you raise the MV 5dB. After the -10dB sweep if you notice any compression, (less than 5dB SPL increase) hopefully you shouldn't yet, decrease the next sweep to a -3dB MV increase and observe, refer t my graph as you continue.........good luck and if you have any questions feel free to ask.
I obviously didn't start at -20MV as you can see, I did a full compression sweep at many levels just to insure consistent results at all levels, not necessary but I'm not necessarily a person.................