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09-20-2011, 08:53 AM
| | | | Wattage
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If I plug an 8 ohm,250 watt cab into each of my amps output jacks,I know I will have 4 ohms but what happens to the wattage.Will I have 500 watts or 125 watts ? Thanks |
09-20-2011, 09:12 AM
|  | Registered User | | Join Date: Feb 2005 Location: Seweracuse, NY | | | Depends on the amp you have.
Cabs don't 'create' watts...Amps do.
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09-20-2011, 09:56 AM
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Owner, Bill Fitzmaurice Loudspeaker Design | | Join Date: Sep 2004 Location: New Hampshire | | Quote:
Originally Posted by BurningSkies  Depends on the amp you have.
Cabs don't 'create' watts...Amps do. | +1. Besides, it just doesn't matter. If it's loud enough it's loud enough. |
09-20-2011, 10:08 AM
| | Registered User | | Join Date: Feb 2005 Location: Seweracuse, NY | | Quote:
Originally Posted by billfitzmaurice +1. Besides, it just doesn't matter. If it's loud enough it's loud enough. | I WANT ALL MY WAAATTTTTS! 
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09-20-2011, 10:08 AM
|  | Registered User | | Join Date: Nov 2009 Location: Quantico, VA | | | It depends on whether the outs are in series or parallel.
Check out the Amps FAQ at the top of the AMPS section. Good info on this stuff.
Oh- and the two guys that posted before me: listen to them. |
09-20-2011, 10:17 AM
|  | Registered User | | Join Date: Mar 2008 Location: Central Illinois, USA | | | What amp? What's it say on the back panel by the speaker jacks, or in the owners' manual?
It probably says something like "400 WRMS @ 4Ω, 230 WRMS @ 8Ω". And since most amps have the speaker jacks wired in parallel instead of series, two 8Ω boxes come to a total load of 4Ω so that's what you need to find out about your amp. GENERALLY, the power rating at 4Ω is a bit over half of the rating at 8Ω for solid-state power amps.
With a tube amp, it's a crapshoot because it depends on how the jacks are wired to the output transformer.
John
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09-20-2011, 10:32 AM
| | Registered User | | Join Date: Jul 2007 Location: Dallas, TX | | | The way I read the op, I think he's contemplating 2 lines from the head into ONE cab. DON'T DO THAT!!!! you will kill the amp.
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09-20-2011, 11:04 AM
| | Registered User | | Join Date: Mar 2011 Location: Cayce, SC | | | Example: my amp is 300w at 8 ohms with one 8 ohm speaker, and 500w at 4 0hms with two 8 ohm speakers.
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09-20-2011, 11:49 AM
| | | | We can't say exactly if you'll get 500 W, but it should be close to that. The amp itself should say on the back right by the speaker jacks, as JTE said.
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09-20-2011, 11:53 AM
| | Registered User | | Join Date: Feb 2005 Location: Seweracuse, NY | | Quote:
Originally Posted by RickenBoogie The way I read the op, I think he's contemplating 2 lines from the head into ONE cab. DON'T DO THAT!!!! you will kill the amp. | This is true...I didn't get that from the OP, but it could be what he's intending. And yes, it would kill and amp dead, but I'll stop short of saying "don't do that" as long as you take video and post it here once you've tried.
__________________ fEARful: for those who want something better: http://greenboy.us/fEARful/ For Sale (locally only): Bergantino HT115 with Cover: $500.00. PM me about it.
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09-30-2011, 06:21 AM
| | Registered User | | Join Date: Oct 2009 Location: Mill Creek, WA | | | As a rule you NEVER plug two amps into one mono speaker.
However if his amp has two output jacks truely wired in parallel (like most are) and if the cabinet has both jacks truely wired in parallel (like most are) then connecting both would have no effect.
However on that off chance that they're not I wouldn't recommend it.
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