bass and treble clef

Ok... I play Baritone TC but I have recently received music that is only in bass clef... I have learned how read bass clef but im have a problem playing it... I researched bass clef and in seems like the high c on bass clef should be my low c on treble... im should be able to go lower than tc low f but it come out... weird any help?

If you're asking how the bass clef and treble clef are related, then yes, the note on ledger line above the bass clef staff is middle C, i.e. the note one ledger line below the treble clef staff.

If you're asking why you can't play certain notes...well I have no idea.

In treble clef your lowest playable note should be written F#, three lines below the treble staff. This is if you have a three valve instrument. If you have a fourth valve, THEN you can go lower. This limit low F# is the same as that E that's right below the bass clef. (it LOOKS like your low C if it were a treble clef).

To familiarise yourself, I'd suggest just playing around on the open notes of the instrument. If you're used to Treble Clef, this will all be low C, G, C, E, G, high C. And of course each combo of valves lowers this half-step by half-step. When you're in bass clef however, you're supposed to play the notes as they actually sound. Your C in treble clef isn't really a C at all... it's YOUR C, but in actuality it's a Bb that's an octave below the note you are actually reading. It's that Bb that's notated on the bass clef. So your low Bb, (it looks like a middle G if it were TC instead), then F, Bb, D, F, high Bb are now your open notes. You just need to play around with these and practicing THINKING about what you are playing in both clefs, so you can readily switch between the two.