Another solution might be to try a Hughes & Kettner Red Box ($100) or a Behringer GI100 ($50). Both are cabinet simulators that sound similar to a 4x12 with and SM57 on it, and I've heard great results with them both live and on recordings. Both go between the amp and speaker, but neither are "load boxes", so you'll need to keep the speaker attached.
I haven't tried it, but I suspect you might be able to get away with putting one on the preamp out...
The other option might be something like a POD or ElevenRack plugged straight into the R16
I haven't tried it, but I suspect you might be able to get away with putting one on the preamp out...
The other option might be something like a POD or ElevenRack plugged straight into the R16
Glad it worked out!