Ches, Yes, its definitely better to solder the wires. This is only my second time soldering and everything came out okay. Just take your time and don't rush. Also get a nose mask. The smoke from using the solder made me sick after a while;)
Oh the part of filling the speakers...I think I used...
I found another interesting change after I replaced the original 24gauge wires with the new 16 guage wires from the speaker to crossover. Anyways, today I messed around with the speakers a bit. I took out all the fiberglass fill and compared the speaker with the new 16 gauge wires to the...
http://www.geocities.com/foreverfai/teacmod.html
Yup, recently got the Teac HTIB from costco for $280. This HTIB includes
4 - sats with 1 inch tweeter and 4 inch fiber cone
1 - center with 2x 3 inch fiber cone and 1 inch tweeter
1 - 100 watt RMS 7 inch subwoofer
1 - Teac AG-D8900...