I recently got a Glasser carbon fiber bow rehaired to salt and pepper, and bought the new Wiedoeft rosin. Now I know new bow hair takes a lot of rosin but compared to my normal black-haired Steinman w/pops that I use.. The Steinman is louder while the Glasser is quiet. I don't know if the Glasser is quiet because of the fact it has a carbon fiber frame, or if its the rosin and need to get different hair, but I have been wanting to use this Glasser on my bass - driving me nuts that I can't get it to sound loud.