You really need to check the settings. I don't care what amp you have on what sub, if you have the sub crossed over wrong and your sub level is set really low on your deck it will not be very loud. That great big amp is only as loud as the preamp signal being fed to it.Unsure of the settings.. but even with what you said. I dont see how stock 6.5's could drown out 2 Type R's off a 2500D, or a 12W7 off a 1/1000, or two W6's off a 1/1000. I've installed all 3 of those systems on this HU. Same result, little to no-bass.
