I like the C1 a lot, but I wouldn't recommend it for that application. It has too much color. The B1 or B3 would be better for micing acoustic instruments if you want LDCs. I'd also check out the SP C4 SCDs when they come out next month.
I've done a lot of vocal/guitar tracks using C1's and they've worked pretty well. It would be nice to get a little more isolation between them but what I've tried so far (foam) hasn't worked that well.
Yeah there is a bit of a problem with the C-1 and acoustic guitar and that's finding the sweet spot, once there it sounds great but the 012's allow a lot more movement.
Ditto what the others have said. It depends on what type of stereo recording you intend doing. For instance a solo guitar may require relatively close micing. On the other hand, a live recording of a small ensemble with a stereo pair would require the mic placement to be further from the source and a pair of omni's, (providing the room acoustics are good) would be a better choice to prevent bass rolloff.
A pair of small diameter condensers with matched interchangable omni and cardioid capsules along with a single LD multipattern mic would enable you to record using coincident, spaced pair and MS (mid-side) stereo techniques that would cover most situations.
While certain sources, especially vocals, often benefit from suitably 'flavored' microphones such as the C1, more accurate faster responding SD mics, with less off-axis coloration, would be my choice for stereo instrument recording.
Most people here are correct, yet there is a happy medium to this. A good SD mic up close and a LD back 12 to 18 inches provides a good thick tone with depth.
Pairs of SD's and LD's can work...Like everything else it all depends on the sound your looking for, so this will be the key.
This kinds of recordins sound the best for me and as listening them got the prod to try the recording myself- for fun. I like very much the OPUS 3 philosophy and my playback setup is build
by the same philosophy- 45 SE amp/ one way horns. My plan is keep the analog signal path also shor in recording setup. That means two mics. tube pre and ADC. All planed projects will take place in different big rooms like halls and church (not small ´´dead´´rooms+dig.reverbs...)
Performers will be different size vocal and small acoustic jazz groups, also single acousti instruments in live rooms.
I am not shure this makes the microphone recommendation easyer.
Thanks for try.
I understand Jan-Eric Persson in OPUS 3 uses much AKG C-24 for that . (I know its price)