Frankly, in an untreated room, you are doing the right thing by using cardioid dynamics, although the CO9 is more of a live mic than a studio one, and might be a candidate for replacement. The SM58 is an all-round professional's choice of dynamic vocal microphone, so keep on using that!

One thing you many want to consider is whether you would benefit from using a stereo pair for the acoustic guitar recording. Small diaphragm condensers (SDCs) are the traditional mics for this job, and would give you more spacious recordings with increased top end than a mono dynamic, but be considerably more sensitive to the room acoustics, particularly things like floor reflections. An example would be the Rode NT5 matched pair at around 400 USD.

Your Scarlett 2i4 is a great little 2-channel audio interface, and is not the weak link in your chain at this level.

Thanks for the reply! Thoughts on using up my budget on a single, superior SDC, recording mono and doing some stereo widening in the box? Or even a LDC which could be used for vocals as well/would pickup less room noise I would imagine?

Spencer Baird, post: 432847, member: 49481 wrote: Thanks for the reply! Thoughts on using up my budget on a single, superior SDC, recording mono and doing some stereo widening in the box? Or even a LDC which could be used for vocals as well/would pickup less room noise I would imagine?

Stereo widening in the box often imply the use of stereo enhancer plugins which are the worst things created because it uses phases disaligment to do their work. It can create a bunch of problems in your mix so I try to avoid it. Instead, if the song calls for it, I'd track the guitar twice and pan them. Or you can use a wide reverb or a M/S processing plugin.

Usually LDC are more detailed and sensitive than SDC, so they usually pickup more of the room noises and reverb. With small steps like putting thick curtains or draps on walls or singing toward an open closet full of clothes. You can definitly record some good track if the sources are close to the mic.

Spencer Baird, post: 432847, member: 49481 wrote: Thanks for the reply! Thoughts on using up my budget on a single, superior SDC, recording mono and doing some stereo widening in the box? Or even a LDC which could be used for vocals as well/would pickup less room noise I would imagine?

You can't "widen" a mono signal, and an M-S plugin won't help because there is no S channel. If you can't multiple-track the source, about all you can do is use a stereo reverb or some other artificially wide effect.

Boswell, post: 433093, member: 29034 wrote: You can't "widen" a mono signal, and an M-S plugin won't help because there is no S channel. If you can't multiple-track the source, about all you can do is use a stereo reverb or some other artificially wide effect.

Boswell, what I wanted to say is to put a stereo reverb and then use M/S processing to enhance it...

pcrecord, post: 433094, member: 46460 wrote: Boswell, what I wanted to say is to put a stereo reverb and then use M/S processing to enhance it...

I think that would not sound good. It would be better to find a wide reverb, like the Lexicon one. Don't forget to check the result in mono - some reverbs leave nasty artifacts in the centre that are not apparent when listening in stereo.

Akg 214's are at the top of your budget but work well with acoustic and vocals. You will pick up alot more of you room though with a mic like that.

+1 on the rode nt-5s excellent mics. Maybe a used AT 4050 with its bright top end would be nice on acoustics, it's a great female vocal mic. Maybe an avantone cv-12 for an all arounder? They sound nice when you replace the tube.

It's difficult to reccomend (condenser) mics in an untreated room. Maybe an AT 3035, a few moving blankets and a used groove tubes Brick preamp would make the biggest sonic difference.. Certainly at the top of your budget but exceeding not a whole lot. And that's a lot of mojo for a rig.

As far as 200-vs 500 mics, really nothing is a a significant level up in that rAnge, your not gonna find $500 mic that blows away a decent mic of lesser. When you start talking $500 and up that's a more definitive line, as you get into 414s and 40 series audio techincas, and a personal fave the sennheisser md 441. In the +500 you get into the more workhorse mics you see in a typical studio enviornment.

( Boswell pcrecord kmetal @Spencer Baird @Chris Perra )

Spencer...

There's nothing wrong with your pre; the Focusrite 2i4 is a nice little entry-level pre/i-o, and as Bos mentioned, there's nothing wrong with using an SM58, either.
In fact, in your current room situation, it's probably your best bet, as it will pick up far less of the sound of the room than a condenser would.

The fact that the room is untreated is probably going to present the most issues for you - at least at this point, anyway.

(There's nothing that says that an untreated room will always sound bad - but it's very rare that the "typical" room in a home will sound good without treatment to some degree or another.)

You don't necessarily have to treat the entire room for recording, either; as Marco mentioned, you can use materials like roll-up rugs for the floor, or thick packing blankets, hung over mic or speaker stands, or, if you're in a place where installing some small hooks into the ceiling won't get you into trouble, you could hang the blankets in that fashion as well. These temporary recording "booths' can work well at attenuating mid to high frequency reflections/flutter echo, and they don't have to be permanent, either. You can set them up or take them down as you need within a few minutes.
Now... they won't provide any isolation - so if you're located in an area with heavy traffic or city noises, they won't help with that - but they will help to tame the amount of room reflection that the mic will pick up.

I agree with Kyle that within your current budget, most of the mics that reside in the $300-$500 price range are all going to be pretty similar - it's when you start to get above that $500 range that you'll begin to hear differences in quality.
That's not to say that you can't get a decent workhorse mic in that range, because you can - Rode and AT both make decent sounding mics at that price level. But when it comes to picking up the sound of the room you are recording in, they're all going to be sensitive to that, because they're condensers, and that's the nature of those beasts. And, the higher the quality of a condenser, the more sensitive it will be, so until you do something to treat the room reflections, stepping up the quality of the mic will actually end up working against you, at least in this scenario.

As a side note, if you are using the same room to mix in as you are to track in, you may want to look into some form of real acoustic treatment, ( bass traps, broadband absorbers, etc) because you're likely to get some very skewed mixes if your room is "lying" to you when you're listening. So at some point, as your budget allows, this is something you'll want to seriously consider.

I recommend Rod Gervais's book, [[url=http://[/URL]="https://www.amazon…"]Home Studio - Build Like The Pro's[/]="https://www.amazon…"]Home Studio - Build Like The Pro's[/] for room treatment solutions, many of which are not at all expensive - yet are very effective - and most of the materials needed can be found at any of the bigger home improvement stores.

FWIW
-d.

I didn't want to be the one to have to go there d :) right on as usual.