stevem Messages: 4733 Registered: June 2004 Location: NY
Senior Member
Yes, the clean RMS wattage of the amp is half of the model number.
For your usage I would recommend the 70s Charger Model for Bass which is a metal face era amp ( you can see it in this sites Literature section)and if you load it with a new driver with a high SPL rating like a EVM B series driver or a Eminence driver will blow away the 100 watt Ampeg even with its lesser 75 watts of power due to its older, but more robust power supply!
The limiting thing with vintage era Kustoms is that any amps designed powering just 1 15" driver wants a 8 ohm load to make max clean power so you can only use one spreaker on it as if two drivers no matter how you wire it will be 4 ohms or 16 ohms.