wattage

[billfitzmaurice]

So your saying the rated wattage of a head means nothing it depends on the sensitivity on the speakers. Then why doesn't everybody get an 150 watt head and put in more sensitive speakers?

The industry doesn't offer them. The labor costs of producing high efficiency speakers are prohibitive. They pretty much only exist as DIY.

 

[Herman]

The industry doesn't offer them. The labor costs of producing high efficiency speakers are prohibitive. They pretty much only exist as DIY.

That may be - it depends on how you define "high efficiency" I guess. But there is a fairly wide range of efficiencies to choose from in production bass cabs - something like from low 90s to low 100s at least. So, as a consumer, you can choose higher efficiency over lower efficiency and get the benefit of not needing as much amplifier power as you might otherwise.

 

[HELLonWHEELS]

That may be - it depends on how you define "high efficiency" I guess. But there is a fairly wide range of efficiencies to choose from in production bass cabs - something like from low 90s to low 100s at least. So, as a consumer, you can choose higher efficiency over lower efficiency and get the benefit of not needing as much amplifier power as you might otherwise.

How do you know the effeciancey of thee cabs?? And do OHMS have anything to do with the effciency?

EDIT: how would a higher effciency affect your tone? Wouldn't it have to give you more treble?

 

[scorpionldr]

alright, I'm seeing all the posters here go on about the jargon of how ohm conversion on amps work and how to "double" volume with 10 decibals.
I know that if I go from a 65 to a 600 watt amp head that at the same impedance, the volume will be considered an approximate double (if we ignore the slight 50 watt difference).

now, I'm seeing that many amps have this many watts at this ohms, this many amount of watts at that ohms.......does the actual tone of the amp change with the conversions? I mean pushing volume and "percieved loudness" aside, if I'm using the same number/size speakers between cabs, will the tone really change much?

 

[billfitzmaurice]

How do you know the effeciancey of thee cabs??

You don't. You'd only know if you could see an SPL chart, and no major manufacturer provides them. Some post sensitivity ratings but by and large they're useless without a chart.

And do OHMS have anything to do with the effciency?

Not really.

how would a higher effciency affect your tone? Wouldn't it have to give you more treble?

No. Ideally you'd get more bass.

 

[HELLonWHEELS]

You don't. You'd only know if you could see an SPL chart, and no major manufacturer provides them. Some post sensitivity ratings but by and large they're useless without a chart.

Then wouldn't they make the lowest possible because it would be cheap plus the bigger always sounds better? Do you know what companies would have better quality speakers?

 

[jumpingbob]

Since this seems to be the watt/ohm place to ask questions I'll add one I have in:

I have a 300rms in 4ohms head and Im searching for a cab to buy. Whats the best choice to go with, 210 at 4ohms to get the most sound, or a 410 at 8ohms? With the first it'd be loud but there would be no possiblity of expansion. With the 410 I dont know how loud it would be, since it would be 150watts at 8ohms, but there is room for another cab in the future......

any ideas?

 

[NegatroN]

If you run 1400 watts into a 700 watt cab--what happens?

(Assuming an amp doesn't run at peak power 100% of the time)

I use an 2x700 watts amp with two 400 watts speakers and that just works fine. As long as you don't crank up the amp to the limit - which was never necessary so far because about on 30% my rig is REALLY loud. Absolutely enough even with two low-tuned guitars (and players that like to play quite loud).