My amp will put out 300w at 4 ohms. What would be the volume difference between a 4 ohm 212 cab and an 8 ohm 212 cab on this amp?
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Amp load question #2
- Thread starter fourstringbliss
- Start date
alexclaber
Commercial User
alexclaber said:
So, if I got an 8 ohm Avatar 212 it would only be a little quieter than the 4 ohm Avatar 212? That would be really convenient for adding an 8 ohm 212 to later for the full 300w.
alexclaber
Commercial User
alexclaber said:
Sweet! I'm pretty sure that a 212 will be enough for me, but if I want to add another cab I don't want to have to sell and buy different cabs to make the right amp load. Thanks again!
Thought I read somewhere that a 4 ohm version of a driver was same volume as the 8 ohm version of the same driver.
Sounded stupid, the 4 ohm gets more power, but if you think of "why" its 4 ohms vs 8 ohms it makes more sense. The reason the driver is 4 vs 8 ohms? Less windings in the voice coil. Twice the windings in the 8 ohm voice coil would double the mag field, but cuts the current in half, so its about a wash.
So if that is true, there would be no loss of volume for the 8 ohm 212. If its not true, whoever said it'd be about 1.5 dB quieter is about right. Not noticeable, and with an 8 ohm cab you have the option of adding another 8 ohm cab.
Randy
Sounded stupid, the 4 ohm gets more power, but if you think of "why" its 4 ohms vs 8 ohms it makes more sense. The reason the driver is 4 vs 8 ohms? Less windings in the voice coil. Twice the windings in the 8 ohm voice coil would double the mag field, but cuts the current in half, so its about a wash.
So if that is true, there would be no loss of volume for the 8 ohm 212. If its not true, whoever said it'd be about 1.5 dB quieter is about right. Not noticeable, and with an 8 ohm cab you have the option of adding another 8 ohm cab.
Randy
Bob Lee (QSC)
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alexclaber
Commercial User
Bob Lee (QSC) said:
I'm wanting to get an Avatar 212, and if an 8 ohm cab will only be a little quieter than the 4 ohm cab, I'll get the 8 ohm and add an 8 ohm 210 or 115 later.
Highpipes just clued me into this great item: [Invalid or Expired Link Removed]. This would allow me to get the 4 ohm 212 and add a 4 ohm 210 later while still only loading my amp down with 4 ohms!
Hmm, I wouldn't trust that, it doesn't appear large enough to have a transformer in it, it's probably extremely lossy. Get the 8 ohm cab.
Tim__x said:
It would have to have a transformer in it? What would be the real sound difference between the 8 and the 4 ohm cab?
There was a detailed thread on the Speakermate device some time ago. In a nutshell, the Speakermate is ONLY a device which lets you avoid having to use different cables when changing between series and parallel scenarios with different cab combinations. It does NOT have a transformer or otherwise let you perform magic or circumvent Ohm's Law.
Now that I've looked at the connection pics that's clear.
The "equalized power" claim seems phoney, look at the fourth picture, clearly it parallels the two eight ohm cabs and puts that in series with the four ohm cab, but that in no way provides equal power to each cab.
The "equalized power" claim seems phoney, look at the fourth picture, clearly it parallels the two eight ohm cabs and puts that in series with the four ohm cab, but that in no way provides equal power to each cab.
