Once I get my Brahma 12" , I will need a way to power it. I have a memphis SHP 10" right now being powered off a weak reciever. I have my main reciever for my Home Theater, and then a seperate reciever powering this subwoofer. It seems to work well. But recently I've been asking questions about if underpowering a sub can hurt it.
If someone could, please tell me if running a high power sub... like a brahma or memphis SHP, will get hurt buy powering it with a 100 watt reciever.
If so, how and why.... and..... What else can I do?
Thanks
If someone could, please tell me if running a high power sub... like a brahma or memphis SHP, will get hurt buy powering it with a 100 watt reciever.
If so, how and why.... and..... What else can I do?
Thanks
not a problem...
Hi,
A brahma has a huge motor assembly and voicecoil, assuming your receiver doesn't dump DC current you can play it as loud as you want. The brahma is not going to give a hint of strain at 100w, so theres a good chance you'll end up clipping the receiver, which will sound bad, but shouldn't be damaging. You may even find the reciever will shut off, which is even less fun...
Stuart
Hi,
A brahma has a huge motor assembly and voicecoil, assuming your receiver doesn't dump DC current you can play it as loud as you want. The brahma is not going to give a hint of strain at 100w, so theres a good chance you'll end up clipping the receiver, which will sound bad, but shouldn't be damaging. You may even find the reciever will shut off, which is even less fun...
Stuart
DC offset
Hi,
Just as Simon says, the DC at the output of the amp should be less than a 0.1v (100mv), it will probably be less than half this. You need to measure it with no speaker connected and the volume at minimum. If you have been using it driving another speaker with no issues, I'm pretty sure it won't be a problem.
Eventually, if you really can't get enough power out of one channel of your receiver you could try bridging the left and right channels. This gives a big increase in theoretical power, but in practise many lightweight receivers simply shut down or die.
Stuart
Hi,
Just as Simon says, the DC at the output of the amp should be less than a 0.1v (100mv), it will probably be less than half this. You need to measure it with no speaker connected and the volume at minimum. If you have been using it driving another speaker with no issues, I'm pretty sure it won't be a problem.
Eventually, if you really can't get enough power out of one channel of your receiver you could try bridging the left and right channels. This gives a big increase in theoretical power, but in practise many lightweight receivers simply shut down or die.
Stuart
Re: DC offset
Yeah, but if he want to see if the receiver is clipping when driving the subwoofer hard, he need to have the speaker attached with the volume quite loud, with the multimeter in DC voltage setting, between the speakers terminals, so in parallel with the speaker.
The multimeter in DC voltage mode won't break something, the impedance is like 10 megaohms, so it's invisible to the receiver.
If in very loud passages the DC voltage climbs, then the amplifier is clipping a bit.
Don't put in in DC current mode in parallel with the speaker, because the receiver will fry hehe! If you want to check for DC current, it needs to be in series with the speaker.
Stuart Easson said:
Yeah, but if he want to see if the receiver is clipping when driving the subwoofer hard, he need to have the speaker attached with the volume quite loud, with the multimeter in DC voltage setting, between the speakers terminals, so in parallel with the speaker.
The multimeter in DC voltage mode won't break something, the impedance is like 10 megaohms, so it's invisible to the receiver.
If in very loud passages the DC voltage climbs, then the amplifier is clipping a bit.
Don't put in in DC current mode in parallel with the speaker, because the receiver will fry hehe! If you want to check for DC current, it needs to be in series with the speaker.
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