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      09-15-2012, 07:03 AM   #9
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mob17's Avatar
United Kingdom

Drives: E92 335D
Join Date: Mar 2012
Location: East Midlands, UK

iTrader: (5)

Steps 1 and 2 are required so it enables you to raise your amp gains after level matching, if required/suitable. It isn't suitable for you as your centre eill be attenuated. And even though the ms-8 will limit the power of amped channels, its still much better for you to level match everything before, you'll get a better autotune.

So you've got 3 L7 mids across the front, and you're amping two of them. So you're going to have to either somehow get a much more efficient centre to match the SPL level of your other 2 L7 mids on ~ 150w of power. Maybe a kappa infinity 42.4? If you're after SQ this won't really be a good idea though. Or you could keep your L7 centre and upgrade to Morels, which are slightly less efficient and also 4 ohm, so they might even match your centre even on 150w. There are online calculators to estimate this. Have a play with different combinations and see what works. You can buy Morels for 230, the extra 50 definately worth it.

I'd measure the SPL levels from the driver head position.
E92 335D
422bhp 618ft.lbs
Ohlins R&T with custom Swift rears, diff lock plate, monroe upper shock mounts