"New" Tannoy System 12s

I just bought a used pair of System 12 Mk. 1s.

I have 3 burning questions:

1. Does anyone know where I could find a manual?

2. Also, apparently I need help in how to bi-wire these guys.

3. My amp (really a surround sound receiver) is rated at 110 watts RMS/channel. Some folks have told me that I will not enjoy a balanced frequency response until I invest in a more powerful amp (250-400 watt). Their contention is that my puny amp will have issues moving that big heavy magnet, and the low end will suffer as a result. Any thoughts on this theory?

Thanks (in advance) for all comments!!