| Re: My IB sounds weak.
I know you have a lot of questions being thrown at you, but answering them all will help us to help you.
7 ohms seems quite high, generally I think we see most IB subs final load at 4 ohms, sometimes 2, for the most power. If your first pair of Tempest were at 4 ohms and you added another 4 ohms in series then you now have an 8 ohm load (or 7 as you have measured, previously you actually had 3.5 ohms). That would definitely be the culprit. For instance, if your amp is 600 wpc into 4 ohms (300 wpc into 8 ohms), you previously had 600 watts going to each sub. With that 8 ohm load you now only have 150 watts going to each sub. That will make a huge difference. Are you sure everything was fine after adding the other pair of Tempest?
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