Pc,
I think the older b60 has a set of pre-out/power-ins. They have U jumpers connecting them for use as an integrated amp.
If you use the pre-outs to a sub, you are also going to need a sub that loops back the signal to connect to the amp-in.
You might be able to use a "Y" connector and send one side to the sub and the other side to the amp-in.
Enjoy,
TIC
I think the older b60 has a set of pre-out/power-ins. They have U jumpers connecting them for use as an integrated amp.
If you use the pre-outs to a sub, you are also going to need a sub that loops back the signal to connect to the amp-in.
You might be able to use a "Y" connector and send one side to the sub and the other side to the amp-in.
Enjoy,
TIC