Originally Posted by basshead81
If you pull down a peak by more than 6db it can and will eat up headroom because other frequencies around that peak will need boosted to some degree. Also it tends to degrade the sound quality some too. its better to use the eq as a last resort function from what I understand.
It depends on how you use the parametric EQ. The SMS-1 has a "Q" adjustment that allows the user to select how wide the EQ band is. If you're just pulling down a narrow peak, you use a narrow EQ band. If it's a wide peak, you use a wide EQ band. If you use an appropriately wide EQ band, the effect on adjacent frequencies can be minimized.
I agree it is best to use EQ as the "last resort." Adjustments should be made in the following order:
1. Adjust in-room positioning, (this includes BOTH the subwoofer placement(s) AND the listening position.)
2. Adjust the room acoustics, (this includes bass traps, but bass traps have limited benefit at the lowest frequencies.)
3. Tweak the final result with EQ.
I recently turned this response:
...into this response:
This was with a combination of an SMS-1 and Audyssey XT32. The owner of that system described the sound as:
Then... Something magical happened. We started to just listen to some clips and do some fine tuning. What I heard was probably the BEST sound I had EVER had in my room.
His room has bass traps and acoustic treatments. We spent considerable time positioning his subwoofer. But the EQ was the icing on the cake that allowed the sound to really open up.