How many watts minimum for a 10" sub?

Question

I'm not sure of all the specs of my sub, I know it's 10" rated at 4 ohms, how many watts minimum would I need to power that sub... I bought a new receiver and I'm going to use my old 2 speaker receiver to power the sub, but I only have 60w per channel. Is 60w enough, or is there a way to combine both channels and use all 120w?

Answer 1

You would need the instruction manual to see if you can bridge it.....

Most subs become efficient about 5 to 10 watts minimum.....that's because you are pushing such a large mass....

So make sure it's set for that....

And as for bridging....don't attempt to bridge it without the manual, you can blow the amp, and then you're done...

Answer 2

I think all reciever output is non bridgeable but read the specification of your receiver it might help. It is better to have own power sub amp at least 150W RMS output...

Answer 3

I have a JBL 10" sub and it is rated 265Wrms. If your sub is an old model it may be a little lower than this. Your 60W amp I believe is already enough. You have two possibilities:

1. Using your  2 channel amp, short the the input of the amp and feed to this the sub filter. Remember you only need a mono amp for a subwoofer. You will have a single intput but two output.

2. I don't know if this is possible in your amp. I also don't know if you will understand me better ask a technician. This is how to do the second option. Connect your speaker in series, then connect the output of your amp in bridge configuration. This will almost double the output of your amp.  

Remember that not all amp are bridgeable. Verify first cause this might destroy your amp and speaker.