Speakers - Help!!

[bloodrose]

Ok, Ive settled in on guitars. Im loving what I have and too broke to buy anything else. I decided to focus on putting the rest of my rig together. I have alot of pedals that I basically put in storage years ago so that I could stop playing with the pedals and learn the guitar. I bought the pedals I can really use now, a delay and tubescreamer. And I have a amp that I really like. ( I ultimately want a Splawn Quickrod, but have no funds) I still dont get the sounds that I think I should be getting with the JCM800. I know my playing is still lacking, but there is part of the tone picture that is still lacking. From having chats with some seasoned guys, I think maybe my cabinet may be to blame.
I use a Carvin MTS 4x12 with the CArvin british series speakers.
I believe the cab is well constructed. I did research before I bought it, but I ultimately bought it for the low price.
Now, Ive heard the Carvin speakers are turkeys. Ive also heard first hand how much difference a speaker can make on tone. I changed the speaker in my classic 30 to an Eminence private jack..
So, here is my delimma. (delimmas?)
Should I buy another cab or just change speakers?

In either case, I dont know what speakers to get.
I got the private jack cuz Ive always loved recordings where the player uses greenbacks. However, the speaker in my classic 30 breaks up almost too much.
So, should I get 4 greenbacks? 4 vintage 30s? 2 of each??
Im talking celestion for reference, but after I determine direction, Ill need help with brand..

please help!
my ideal tone and style Im going for is heavy blues, rock/metal.

I LOVE Billy Duffy's sonic temple and one of my favorite things to listen to and what I want to do is this:

I love both the playing and the tone of this.
www.youtube.com/watch?v=sqJjHSIdU_o
www.youtube.com/watch?v=YbR7ObwVbik

and
I love this!!
www.youtube.com/watch?v=7kUR9J1E2ZU

this example is for the style more than tone.

Tonewise, I love the hollow bark (honk?) that seems to come from modded marshalls or splawns..

This is the tone I LOVE!
www.youtube.com/watch?v=bwx8NazYz5c

[bloodrose]

Well, I guess if speakers dont matter, I'll just pick me up a good Ibanez or crate cab..

No advice?? did I scare everyone away being long winded??

Summary. thinking I should change out the carvin BR12 speakers in my cab for better sound. Not sure what to use. Celestions or what brand? And what type? vintage 30 or greenback or a x crossing of the 2 of them? There are so many different speakers, its intimidating. and I cant afford to try 4 of these and 4 of those

Thanks

[gmello]

The Carvins are fine speakers actually. But try a set of Celestion Greenbacks or Private jacks if you want a smoother tone.

Or for a brighter more aggressive tone try the Vintage 30s.

I don't like to cross speakers on a cab. It's bitch to capture the tone of the cab on tape later on.

[bloodrose]

I see your point there.. I know you have tried tons of cabs and all.. You say the stock Carvin speakers arent so bad?? I dont think it sounds bad, I was just wondering if it could be better since Im not hearing what I hear on recordings of marshalls.. And, of course, people are always quick to bash Carvins. How is a 4x12 with green backs?? I put a private jack in my classic 30 and it almost breaks up too easy.. I played a Slash model epi at GC once and the tone I was getting from the Duncan Alnico II pro bridge is the same as I get with my PV..haha