Reply to thread

Message

<blockquote data-quote="butterMilk" data-source="post: 7940823" data-attributes="member: 642287">When my sub is hitting hard and low, 26hz. It makes a bit of a funny sound, almost as if there is a little engine running in there, bit of a rattling sound. The sub is only a few months old and still in very good condition. I dont think its getting a clipped signal(i have a smd dd1). It is in a sealed box, recommended is about 1.5 cu/ft, its a lil bigger than that, about 1.75 cu/ft. I am 99.9% sure nothing is rattling in the box.My equipment:sub- JL 12 W7 in a custom fiberglass boxAmp-1200 watts, JBL Grand Touring Series Class D Monoblock AmplifierRMS Power Output:4 Ohms: 787 watts x 1 chan.2 Ohms: 1114 watts x 1 chan.HU- Pioneer AVH-P8400BHElectrical- Yellow top Optima under the hood. 1 run of 0g + to a dist block, 4g from that to the amp.- Grounds- ChassisIs it maybe because my amp sux? I have found out that it has a damping factor of 6, which I think is quite low, could that maybe be the problem?Any help would be much appreciated, Thanks guys!</blockquote>

[QUOTE="butterMilk, post: 7940823, member: 642287"] When my sub is hitting hard and low, 26hz. It makes a bit of a funny sound, almost as if there is a little engine running in there, bit of a rattling sound. The sub is only a few months old and still in very good condition. I dont think its getting a clipped signal(i have a smd dd1). It is in a sealed box, recommended is about 1.5 cu/ft, its a lil bigger than that, about 1.75 cu/ft. I am 99.9% sure nothing is rattling in the box. My equipment: sub- JL 12 W7 in a custom fiberglass box Amp-1200 watts, JBL Grand Touring Series Class D Monoblock Amplifier RMS Power Output: 4 Ohms: 787 watts x 1 chan. 2 Ohms: 1114 watts x 1 chan. HU- Pioneer AVH-P8400BH Electrical- Yellow top Optima under the hood. 1 run of 0g + to a dist block, 4g from that to the amp. - Grounds- Chassis Is it maybe because my amp sux? I have found out that it has a damping factor of 6, which I think is quite low, could that maybe be the problem? Any help would be much appreciated, Thanks guys! [/QUOTE]

Verification