Snook, I modified the sc 4a,s. no not really as long as you have done soldering before. but be careful has always you take a chance but ive done this many times and the bennefit is worth it.On the binding post is i beleive 8 screws , remove them and you well probaly have to use a flat head screw driver and very carefully ease it between the panel and the speaker, work it a bit and it well pop loose. The croosx well then slide out, check out your values on each of the caps and resistors. Has far as resistors go dont stack them again add the ohm togeather and replace with the corresponding ohm.Look up www.northcreekmusic.com for values and ohm on your parts and always bypass.
If you have a little back ground in this area try it otherwise dont
If you have a little back ground in this area try it otherwise dont