I want to setup car audio system for home theatre setup.
I have single Pioneer 1211D4 DVC 4ohm subwoofer, which forms 8ohms in series and 2 ohms in parallel with a 400W nominal power and 1400W max power. These are my only two options.
and want to buy Pioneer GM-E7002 2 channel amp, it has 70W x 2 (@ 4 ohms) , 95W X 2 (@ 2 ohms) and Bridged 190W X 1 (@ 4 ohms).
So, my question is:
1. What should be the best specs of the amp for this single DVC subwoofer?
2. Does Bridged 190W X 1 (@ 4 ohms) is same as 95W X 2 (@ 2 ohms), if I connect sub with 2 ohm configuration to amp with 2 ohm load to one channel of the amp? Will it produce same amount of power at bridged 4 ohm compare to single 2 ohm channel ?
3. Does bridging two 4 ohm channels lead to mono 8 ohms or 4 ohms ?
4. Should I connect the sub in 2 ohm config to 95W X 1 (2 ohm ) single channel of the amp or 8 ohm config to bridged 190W x 1 (4 ohm) of the amp?
5. Or should I buy mono block amp with stable 2ohm output for best performance?
I would test the various configurations that work numerically speaking.
However, in the end, I expect that driving each voice coil with it's own amp channel will be more useful than other alternatives. The reason for this would be the fact that despite being the same nominal impedance, manufacturing tolerances will make it so the two coils won't be the exact same impedance. This will make the different coils behave differently, even though they are electrically coupled. Where as if they are mechanically coupled, using the same diaphram, it will mean that you cannot hear asymmetric output issues that can arrise with impedance mismatches in two driver acoustically coupled systems.
The only real issue you avoid wiring the coils in series and the drivers in parallel is back EMF. Which is reason enough. Any variance between thew two coils in the woofer average either way and if the differences between two woofers in the same box is so significant as you cause a problem, then they aren't the same woofers