I run 25s/29s ....1000uf at 35 volts and about a 68 or so ohm resistor (I like 1 watters) TRB-1 echo board /RK-56 microphone .....base station on wheels sounding driving that special amp of ones choice , the added diode in 148s and Grant's along with the 949s/959s your (galorafied NPC Mod Swing Kits) are very nice sounding as well on the AM sides of those radios ......yeap !! they don't look really picture perfect on the scope ,but they seem to work well for me and many others , we don't talk to machines ,we talk to people and in the end , if I was to hear that I sounded like crap ? well then I would think about changing things about then.