Originally posted by 97teg
If not enough power would blow subs, they would blow every time you turn it down 
Good observation!!
I read somewhere that when your clipping its like sending twice the power to the speaker.
Depends on the amount of clipping. A slightly clipped signal will not have twice the power. A severly clipped signal could. Thus the (man I hate to use the word) calculus speal in the last post. The area under the curve would tell you how much extra power is being delivered. But who the hell wants to do calculus anyway!! Just know that it is possible to send large amounts of power to a speaker when an amp goes into clipping.
But if the speaker can take twice the power and still be ok it won't be a problem ie clipping a 100 watt amp to a 200 watt speaker youll still be ok.
Yup :thumbup:
If hes running 8 ohms then isn't that only like 65 watts to BOTH speakers or 32 watts each?
Prolly. But we don't know what amp he's running or anything. He could be running a 2 ohm load and doubling the power he thinks he has. We don't know. He needs to use a DMM or ohm meter to tell us exactly what the load is to the amp and what amp he has. Then we can help more.
As you go pass the rated power the thd goes up very quickly and eventually its enough to begin to hear it.
I'm not 100% on this so I could be wrong. But I believe that since the Fundamental is something like 60% of the power in a badly distorted signal, the speaker will only play the fundamental frequency. I believe that when the THD gets so high you are not actually hearing the THD, but the speaker's loss of control due to too much power. Again, I could be wrong.
When it hits on the back plate isn't it more of a "whack" sound thats what happenens? When i bottomed out my rf sub it was a really loud "crack". He says its more of a helicopter sound but hard to tell without actaully hearing it.
If you bottom out on one note, you'll hear the "WHACK" like you heard. If you bottom out on a sustained note, then you'll hear the helicopter sound. I had a box with 2 solobaric 12's (old school ones) in a box that had a seperate chamber for each sub. I had an air leak on the back panel and it caused both subs to just "brbrbrbrbrbrb" like hell. Did it only when the volume was up high. That's the only reason why I thought that may be his problem.
Mish