So I bought a pair of Beyma Liberty 8's. Loaded them in a cab I built, wired them up and fired them up. The sound was much less than what I expected. TONS of mid and low frequencies and nowhere near the highs and high mids of the JBL E120s. This weekend, I took them to a friends house and we A/B'd them next to a set of e120s, and we were both stunned. The Beymas sound NOTHING like the e120s. WAY too much low and mid range. The cabinet they are in is partially closed in back. We contemplated that this 'might' have something to do with the tone? I fine it hard to believe the closed back of a cab would effect the tone that much? Thoughts?