Biasing Two BJTs with One Signal
You cannot simply connect the bases of two NPN transistors like you describe if the emmiters of both the transistors are connected to GND. Instead you have two alternative choices:


Add a resistor in series with each transistor from the bias source. This will allow each transistor to operate independently without interaction problems with the differing VBE of the two transistors.
Add a resistor on each transistor from the emitter to GND. This will introduce some voltage drop across each resistor that will help to offset the VBEdifferences. This is a less optimum solution because it will limit the total IC and may lead to less optimum drive of the two loads.