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  #1  
Old 10-26-2011, 10:40 PM
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ARRRRRGH!!!!!!!!!!! "Weasel Ratings" for amp power!!!

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  #2  
Old 10-27-2011, 01:47 AM
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Quote:
Originally Posted by HereIGoAgain View Post
It seems that 8-Ohms is the most common bass cabinet. Why don't they just rate the wattage at 8 Ohms and allow people who don't live next door to a Guitar Center to develop realistic expectations?

Sorry guys, just venting I guess.
Plenty of 4 ohm stuff out there.

Look at ohms law. if it's X at 4 ohms, It's one half X at 8...2X at 2 ohms.

Your 40 kajillian watt amp will put 20 kajillian watts across 8 ohms.
  #3  
Old 10-27-2011, 01:54 AM
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Quote:
Originally Posted by Steve View Post
Plenty of 4 ohm stuff out there.

Look at ohms law. if it's X at 4 ohms, It's one half X at 8...2X at 2 ohms.

Your 40 kajillian watt amp will put 20 kajillian watts across 8 ohms.
Not really.
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  #4  
Old 10-27-2011, 04:52 AM
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Yeah, 40 kajillian watts at 4-ohms would probably be somewhere around to 27 kajillian at 8.

At least if they’re not advertising “peak” watts, or in some cases flat out lying.

Marketing…
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  #5  
Old 10-27-2011, 09:34 AM
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Hi.

So what?

It's not like they force You to buy their products at gunpoint, now is it?

Stick to the more "reputable" manufacturers and You don't have to worry about misleading marketing department creativity .

You can always roll your own if you wish, then you'll get..., well..., what you are able to make.

Regards
Sam
  #6  
Old 10-27-2011, 07:17 PM
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Last edited by HereIGoAgain : 10-28-2011 at 09:58 AM. Reason: The board doesn't need this.
  #7  
Old 10-27-2011, 07:19 PM
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  #8  
Old 10-27-2011, 08:15 PM
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I've never had problems finding 4-ohm cabs in any store or webstore. In fact I wouldn't even know where to begin showing you examples, because they are so common. MF, Zzounds, GC, Sweetwater, every bass specialty shop...

Can you show us even ONE example of a large web store that doesn't have a decent selection of 4-ohm cabs?
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  #9  
Old 10-27-2011, 09:27 PM
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Last edited by HereIGoAgain : 10-28-2011 at 09:59 AM. Reason: Not arguing about it.
  #10  
Old 10-27-2011, 11:58 PM
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Originally Posted by HereIGoAgain View Post
Guitar Center, Musicians Friend, Amazon....

Amazon had 1 4-Ohm cab (an Eden) sold by a third party.
Except for all these ones...
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Old 10-28-2011, 12:34 AM
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3 letters you need to become acquainted with - RMS

RMS is the actual clean wattage, so learn RMS @ whatever ohm and you will know where to venture from there....ignore "Peak" wattage, this is a garbage term used to sell equipment to people who are clueless, Kind of like people who think they have 300 watt speakers making their stereo louder.
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  #12  
Old 10-28-2011, 01:56 AM
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Hi.

Quote:
Originally Posted by HereIGoAgain View Post
Ampeg, Eden, Gallien-Krueger, MESA/Boogie... I suppose you're right. I should stop looking at those amps and should try to find some reputable makers.

They *all* advertise the 4-Ohm rating and the majority of their cabs, unless their websites are wrong, are 8-Ohm cabs. I could figure a percentage, but it's obvious enough that I don't have to.


You kinda missed my point.

Which is the uninformed obsession of going down to the least possible load in order to squeeze the last watt out of the amp with a single cab, just because of the manufacturers biased marketing.

IME, it's not until several KW range that the difference between 8 and 4 Ohm becomes noticeable. If even then.

4 ohm cabs are harder to find because there's really no market for them.
They are there though, but not necessarily in the price range You're thinking about.

Regards
Sam
  #13  
Old 10-28-2011, 02:02 AM
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Quote:
Originally Posted by HereIGoAgain View Post
(Just venting. Not trying to start stuff.)

ARGH!!!! Why do amp makers rate amp output power using what I call "weasel ratings?"

*in radio announcer voice* "This new amp from your favorite maker will deliver 40 KAJILLION WATTS to your 4 Ohm cabinet....."

From about 4 weeks of internet research, 4 Ohm cabinets are pretty stinkin' RARE!!!!

Yeah, yeah, I know about full stacks, but not everyone wants to buy their amp twice, so to speak. Oh, not everyone has room on stage for a ginormous stack either.

"Hey guys! Check out my new 300-Watt combo!"
"Hey man, are you sure that's 300 Watts? We're talking over it."
"D'OH!!!! It comes with an 8 Ohm speaker...."

It seems that 8-Ohms is the most common bass cabinet. Why don't they just rate the wattage at 8 Ohms and allow people who don't live next door to a Guitar Center to develop realistic expectations?

Sorry guys, just venting I guess.
Uhh...
What
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  #14  
Old 10-28-2011, 03:08 AM
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When I bought my GK 700RB back in 1999 it was rated at 350 Watts into 4 Ohms at .01% THD.
Later they changed their tune and said it was really a 380 Watt amp into 4 Ohms.
Why?
Because everyone else rated their power output at .1% THD, GK decided to do so also.
  #15  
Old 10-28-2011, 04:49 AM
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This thread is kinda mehtarded.

4 full ohms mehtarded.
4 weeks of research....
40 kagillion watts.

I see a theme here....are you four?
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  #16  
Old 10-28-2011, 06:08 AM
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Quote:
Originally Posted by tom once dead View Post
Uhh...
What
What he said.

Quote:
Originally Posted by HereIGoAgain View Post
Examples? In 4 weeks, I've only seen one Eden 4-Ohm cab, and Carvin will build a 4-Ohm cab. Are you talking about "boutique" makers' cabs by any chance?
Yeah, why wouldn't companies like "Ampeg, Eden, Gallien-Krueger, MESA/Boogie..." make a 4-ohm cab? Oh wait. They do. All of them. Most of their cabs will give you a 4ohm option.
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  #17  
Old 10-28-2011, 09:10 AM
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Last edited by HereIGoAgain : 10-28-2011 at 10:00 AM. Reason: Doesn't really matter I guess.
  #18  
Old 10-28-2011, 09:28 AM
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Every amp head I have ever owned has listed the output at both 4 and 8 ohms. It's really not that hard to find these answers after spending 20 seconds of research on a manufacturer's web-site.
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  #19  
Old 10-28-2011, 09:48 AM
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Moderators, please shut 'er down.
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Acoustic Amp Club #336

Last edited by HereIGoAgain : 10-28-2011 at 10:01 AM. Reason: I shouldn't have started this thread.
  #20  
Old 10-28-2011, 10:10 AM
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You have to understand how they get the number. By FTC rules, the mfgs test the amplifier with a sine wave up to the point of a specified clipping (THD) Since it is a sine wave, the rating is RMS, even if that has little to do with musical amplification. It doesn't matter what the numbers are, as long as you can reliably compare two different products.

Which puts out more clean power:
1) 400W at 8ohm, 1%THD
2) 500W at 4ohm, 0.1%THD

It is impossible to know, because the benchmarks aren't the same. If you compared the following, you would know.

1) 400W at 4ohm, 0.1%THD
2) 500W at 4ohm, 0.1%THD

It doesn't matter what the benchmarks are, just that you know how the test was carried out so that you could compare the two.

I don't know of any mfg that doesn't list the power ratings at 4 and 8ohm. Makes sense, because some people use a single 8ohm cab, some use a single 4ohm cab, and some use a pair of 8ohm cabs. Many are capable of 2ohm, and they list the power rating for that as well. So why do they typically market the 4ohm power rating. Because everyone else does, which makes it easy to make a quick comparison between amps. Many people don't even know what it means, just that the bigger number is better.
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