Originally Posted by theflyest1

I have the FI TDX CBE 18" and resonated HFCs...it's definitely okay volume wise. Is it louder than just the CBE? Yes...by about 30%. You can definitely hear the person next to you just fine. No rasp at all...and I absolutely LOVE the tone. For the added HP, it's worth it IMO. Sorry, can't comment on other HFCs...but a happy FI customer here...