Yep, that someone was me, and I disagree with your comment about an XY mic setup not being suitable for solo piano. Not every style of solo piano calls for a wide stereo image. Also, the OP is aiming for a piano recording to sit in a mix of worship music with vocals, drums, guitar, bass & synth, so an XY mic setup with a more controlled stereo image would be my first choice for this application.
Hi CGR
Everyone is allowed to use the microphone setup he think is good. And yes, if a piano doesn't play alone, it doesn't have to appear particularly wide in the stereo field.
Even if stereo is basically not important or if you don't like stereo. Sure then use X/Y or only one microphone at all - why not.
silverling_co's case: He already owns two microphones, so he doesn't need to spend another 400 EUR for a NT4. Therefore, my recommendation was to try all the microphone stereo methods. This is something silverling_co must find out for himself - what sound he likes...
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Hi silverling_co
Some additional information about the stereo setups:
Each setup has advantages and disadvantages. Ideally, one should take this fact into account. That's why it often depends on which setup you choose best.
X/Y: Stereo only by volume difference.
Advantage: No phase shift between the channels = mono compatible. The room influences are relatively small.
Disadvantage: No spectacular stereo image. The image of the instrument is quite focused on the center direction of the microphones. Locating instruments in the stereo field is not really good because the stereo width is not exploited.
So X/Y is good when stereo is not so important and an instrument or voice should be captured in focus.
ORTF: Stereo by volume difference and time delays.
Advantage: The stereo effect is similar to our hearing. So the stereo image sounds natural and gives a nice spatial image. The localization of instruments in the stereo field is not excellent but good.
Disadvantage: Not totally mono compatible due to the time delay of the signal between the mics (microphone distance = 17cm). The spatial influences become more apparent. The microphone configuration is a bit tricky to assemble.
ORTF is good for spatial stereo results similar to how we hear ourselves. Suitable for smaller ensembles or solo instruments - aways depending on the distance "music-microphones".
AB (distance of microphones > 30 cm)
: Stereo mainly due to temporal differences of the signal between the microphones.
Advantage: Good spatial imaging. This method is very suitable for recording choirs, for example, because the individual voices are pleasantly blurred.
Disadvantage: This method is the least mono compatible. In mono, the large microphone distance results in lots of phase cancellations. The localization of the instruments is not good (can also be an advantage >> choir). Since the room influence is large, the recording room plays a big role.
AB is good when a great stereoimage is important, so for choir and organ recordings, or also to add room information for a dry recording. A piano can be recorded with a kind of AB miking: For example one microphone for the low strings and one for the high strings...
There are lots of videos at Youtube about recording a piano with all these stereo setups.
This
Video with music "steps" through all the mostly used stereo technics. You can directly compare the different sounds.
personal Recording Examples:
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Piano Solo ORTF ca. 1,5m distance, 2x Neumann KM184, Venue: Church
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Piano with Orchestra, Mini AB (20cm) (as spot), 2x Earthworks M30, Venue: Tonhalle Zürich
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A few more tips on recording a piano:
You should have the piano tuned before. You react more sensitively to an out-of-tune recorded piano than when you hear it directly.
Pianos sometimes sound a bit "boxy" - because they are in a box. If you remove all the covers, this sound disappears but the piano no longer sounds so voluminous and you also hear all the not wanted noises better...
This means: It is not easy to find the right distance and positions for the microphones. More distance more room influence, less distance more noise (damper, pedal, keys,...). Piano recording therefore means weighing up between many compromises.
So if you need a "Piano Signal" for the Internet, as a Playback or what ever, a solution could be as well to rent a good stage piano
with a nice Piano sound, then you don't have all the recording problems. It is your decission.