It's actually a bit more complicated. If your speakers are not huge (my Yamahas have 7 inch woofers) the woofer will have a resonance in the bass region. The speaker's impedance will rise near resonance (my Yamahas are 25 ohms at 65 Hz). An amp with a non zero output impedance (most tube amps) will experience an increase in output voltage as the speaker approaches resonance. The subwoofer will amplify this and create boomy bass.
It is best to split the signal before the amps. I'm sure that there are all sorts of gadgets on the market to do this, the most common is an active crossover, but that is not needed here since the sub has an adjustable LPF and the tube amp has a high pass response, so I simply wired the two in parallel. This worked well with the SSE, and the TI chipamp I am currently using. My tube stuff is all packed up for the move.
- Status
- Not open for further replies.