The TDA7240A is an amplifier for car radios so it uses a single polarity supply.
The opamps in the crossover circuit can also use a single polarity supply if their inputs are biased at half the supply voltage.
An opamp with a dual-polarity supply has its inputs biased at 0V which is half the total supply voltage.
If you have a +12V supply then if you bias the opamp inputs at half the supply voltage (+6V) with two identical resistors and capacitor-couple the input, output and feedback grounding then any opamp will work.
In my sketch I show a non-inverting and inverting opamp with a dual-polarity supply and a single positive supply:
im having a bit of a problem with getting the schematic laid out.
i couldnt do it with proteus so i changed to Eagle, ive done the tl072,tl071 bit.
but i having a problem with the amplifiers because i cant find a library files for the TDA7240 and the TDA2030. does anyone have lbr files for these components.
ive tried there website but cant seem to find them.