Hi,
Energy makes an awesome/tiny 8" sub for next to nothing. Paradigms are nice too. Any bigger and I'd consider Hsu. I hated my sunfire-buzz/humm and it danced around when worked hard. Pinnacle Baby Boomers are supposed to be really nice and tiny.
You will definitely benefit from a larger amp for the sub. 50 watts won't cut it. Janis Audio systems reccommends that by cutting all frequencies below 100hz you virtually quadruple the available power. Bass is power hungry. If your main speakers are getting 90 watts, your sub should get at least that but probably way more (depending on efficiency). Rule of thumb: you need to double your wattage to gain 3db, 10db increase will double the volume. Therefore, you need to approximately gain 9 x times the wattage to double the volume!
Energy makes an awesome/tiny 8" sub for next to nothing. Paradigms are nice too. Any bigger and I'd consider Hsu. I hated my sunfire-buzz/humm and it danced around when worked hard. Pinnacle Baby Boomers are supposed to be really nice and tiny.
You will definitely benefit from a larger amp for the sub. 50 watts won't cut it. Janis Audio systems reccommends that by cutting all frequencies below 100hz you virtually quadruple the available power. Bass is power hungry. If your main speakers are getting 90 watts, your sub should get at least that but probably way more (depending on efficiency). Rule of thumb: you need to double your wattage to gain 3db, 10db increase will double the volume. Therefore, you need to approximately gain 9 x times the wattage to double the volume!