Did i downgrade my sub/amp system?

[Waltabeast]

:thumbcool:

Everyone likes an upgrade.

Just curious on the issue with the 900.

You said you have a 4 ohm kicker.  The VR's are all DVC's I think so you're only 450 vs 550 on power assuming you're wired for 2.  There's nothing there that would make a lot of difference.

I still think there's more to the story.  Either shop shenanigans or a technical problem with the amp.

Whatever -- glad it's working.

Interesting. So let me ask this. I think i still need some clarification regarding ohms. 

If you have a 4ohm sub at say 400w RMS @ 4 ohm

and an amp that is 250w RMS @ 4 ohm. Doesnt that mean it would only power half of what the sub ca do. Versus say an amp that is 550w @ 2ohm. I guess i jus don’t have a clearly idea at matching RMS from a sub to the RMS from an amp whether it being 4ohm vs 2ohm. 

 

[n2audio 5,000+ posts]

If you have a 4ohm sub at say 400w RMS @ 4 ohm

and an amp that is 250w RMS @ 4 ohm. Doesnt that mean it would only power half of what the sub ca do. Versus say an amp that is 550w @ 2ohm. I guess i jus don’t have a clearly idea at matching RMS from a sub to the RMS from an amp whether it being 4ohm vs 2ohm. 

Well, yeah, but that's not the situation you have.

Your sub has dual voice coils, each is 4 ohms.  So when it's connected to an amp the coils are either wired in series for 8 ohms (not very common) or parallel for 2 ohms.  So in your case the amps would both be operating at 2 ohms.  550w for the 2200m and 450w for the 900m.

And since the cvr is already getting adequate power at 450 there would be little to gain at 550.

 

[Waltabeast]

Well, yeah, but that's not the situation you have.

Your sub has dual voice coils, each is 4 ohms.  So when it's connected to an amp the coils are either wired in series for 8 ohms (not very common) or parallel for 2 ohms.  So in your case the amps would both be operating at 2 ohms.  550w for the 2200m and 450w for the 900m.

And since the cvr is already getting adequate power at 450 there would be little to gain at 550.

Ahhhh I see. That is very strange then. When i had the 900m amp and the bass knob set to half where i usally have it, it was almost as if i didn’t have a sub. When i switched the amp to the 2200m and had the bass knob set at the same level it was like i had 2 12s and was instantly louder lol. So not sure what changed so much But the output increased tremendously. 

 

[fithwheel]

You need to read up on all that stuff. I throw away bass knobs unless it's an attenuation knob 

 

[Mitchc1113]

Avionixx makes really good amps... at least they did back in the day. Were popular on sounddomain forum back in early 2000s... I powered my 2 IDmax 10s off a Avionixx AXT 1200.2 (think that was the model) back in 2006. But anyway def not a flea market amp...unless they've gone the way of a lot of other solid companies over the years and destroyed their name by using cheap parts for profits... But I can say they were once upon a time a very solid company...