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Discussion Starter · #1 ·
In the market for a monoblock for my single Focal 33KX (13", DVC 400watts RMS @ 2ohm). I plan on running it in parallel at 1ohm, so does this amp look like a good bet?

Image Dynamics Q600.1

Budget is around $300-400 for new or used. Would rather buy a nicer amp second-hand if it's going to be measurably better.
 

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Hmmmm, why dont you just do this Pair... the F2 190 was on demo board with Focal 33 v1's, and the F4 380 were on other Focals.. It was a Focal board i had set up. This setup would be in your budget, but yet your getting TOP quality brand... The F2 190 was $449, and the F4 380 was $649, and you are talking about clean amps, not some off the wall junk.. Its worth a look at...

http://www.diymobileaudio.com/forum...749-audio-system-twister-amps-made-italy.html

Ahhhh, i just realized you had the KX, didnt pay alot of attention, those are dual 2ohm VC, so you need a 1 ohm or 4 ohm, because the F2 190 is [email protected], and around [email protected] ohm.. still would be clean power for the sub.
 

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No worries were here to learn. 4 Ohm will run a amp cooler, not drain the car as much, provide better transients, and over all a better option and this is a SQ build, so, to get most out of this, run at 4 ohms, never 1 ohm UNLESS you have upgraded yada yada.
 

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Discussion Starter · #6 ·
No worries were here to learn. 4 Ohm will run a amp cooler, not drain the car as much, provide better transients, and over all a better option and this is a SQ build, so, to get most out of this, run at 4 ohms, never 1 ohm UNLESS you have upgraded yada yada.
I'm confused. I've read you should always run your equipment at the lowest stable ohm-rating. Since my sub is OK at 1ohm, I should run this with a high-end amp that's also stable at 1ohm, right? Otherwise I cut my power to 100watts RMS. I realize SQ is the goal, but I still only have 1 sub...
 

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I'm confused. I've read you should always run your equipment at the lowest stable ohm-rating. Since my sub is OK at 1ohm, I should run this with a high-end amp that's also stable at 1ohm, right? Otherwise I cut my power to 100watts RMS. I realize SQ is the goal, but I still only have 1 sub...
If an amp is designed to be 1 ohm stable then it's not a problem to use it @ 1 ohm... However you have to remember a few things:
- amps run hotter the lower you go in impedance
- class A/B are less efficient than class D amps
- class A/B runs hotter than class D amps
- you won't hear a 100rms difference on subwoofers

If you really want to use A/B on your subwoofer, I suggest this one @ 4 ohm:
JBL GTO7001 (GTO-7001) 700W RMS Monoblock Grand Touring Amplifier

Kelvin
 
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