Am I missing something here on MB Quart stats?

[okiedokie 10+ year member]

500.2 is mono bridged @ 4ohms, not stereo.

You would need Y-adapters to get stereo, then you will see 250.2 bridged

 

[Villeza1 10+ year member]

OK, then why is it not 250x4 at 4Ohms if it is 500x2 at 4 Ohms?

No, you're getting majorly confused.

It's 4x125 4 ohm thats 500 watts at 4 ohm

It's 4x250 2 ohm thats 1000 watts at 2 ohm

It's 2x500 bridged at 4 ohm thats still 1000 watts except it will go to 2 speakers instead of 4.

 

[okiedokie 10+ year member]

Yes you're right but it will be 500x2 @ 4ohms (Mono)

read your manual, I have mine sitting right in front on me

 

[okiedokie 10+ year member]

So the left channel will be mono @ 500

&

the right channel will be mono @ 500

it won't be stereo unless you use a Y-adapter

female in, dual male out.

 

[Bubblebass 10+ year member]

So can I get 125 x2 and 500 x 1 if I make it a 3 channel by using a y adapter on the rear channel?

 

[Villeza1 10+ year member]

So can I get 125 x2 and 500 x 1 if I make it a 3 channel by using a y adapter on the rear channel?

http://www.maxxsonics.net/manuals/mbquart/pdfs/MBQuart08DiscusAmplifierManual.pdf

Go to the amp installation page. See number 3 for 3 channel operation.

 

[Bubblebass 10+ year member]

I appreciate the manual link, but it does not say what the power will be in 3 channel operation. That is why I came to you guys for some help on it. This is kinda where all it all began -- "Will I still get 500 from the rear if I stereo the front channels and bridge the rear?" or is it going to be 300 (150 x the bridge)? The manual says to put it in mono mode if you bridge both. Is it "mono mode switch" that is spitting out more power through one channel or bridging? If bridging (which I suspect), then what does the mono mode switch do?

 

[modskwod 10+ year member]

If you ran it three way, you will be getting 125x2 @4 ohms and 500x1 @ 4 ohms.

 

[modskwod 10+ year member]

The above is from the MB website. I am thinking of getting this amp...but.....How can it be 4x125 RMS and 2 x 500 @ 4Ω? Wouldn't it be 2x500 @ 2Ω? And more like 2 x 250 @ 4Ω?

When you bridge an amp, you combine two channels into one. When you do that, if the each channel puts out full power at 2 ohms, then the bridged channel will also put out rated at the equivalent of 2 ohms per channel, or 4 ohms. Does that clear it up for you?

 

[Bubblebass 10+ year member]

When you bridge an amp, you combine two channels into one. When you do that, if the each channel puts out full power at 2 ohms, then the bridged channel will also put out rated at the equivalent of 2 ohms per channel, or 4 ohms. Does that clear it up for you?

YES! I get it now. So it is performing at 2 ohms per each channel x 2 (equaling 4ohms total). That makes sense. OK......so I am super slow. Thx for taking the time!

 

[05fronty 5,000+ posts]

that amp does rated by the way

 

[okiedokie 10+ year member]

I was wondering who built this amp for maxxsonic?

 

[Sir-Lancelot 10+ year member]

Because it's bridged.

It;s a nice amp, buy the **** thing.

 

[Bubblebass 10+ year member]

Because it's bridged.It;s a nice amp, buy the **** thing.

Deep man. Very deep.

 

[n2audio 5,000+ posts]

YES! I get it now. So it is performing at 2 ohms per each channel x 2 (equaling 4ohms total). That makes sense. OK......so I am super slow. Thx for taking the time!

Starting to come together now?

You have the 4 ohm stereo rating -- all channels operating at 4 ohms -- 125x4, simple enough.

Then you have the 2 ohm stereo rating -- all channels operating at 2 ohms -- 250x4 still pretty simple. The impedance drops by a factor of 2, so an amp with a strong power supply doubles its current output doubling power into the load. This amp apparently has a strong power supply.

Then when you bridge you're taking that 2 ohm stereo power, but combining it to drive ONE 4 ohm load per PAIR of channels. Essentially - each channel "sees" half the load, hence 500w x 2 bridged into 4 ohms.

And yes, a pair of 4 ohm speakers on 2 channels and a 4 ohm sub on the other 2 bridged channels = 125x2 + 500x1.

If you look around you'll see similar ratings from high quality amps. Lower quality amps typically don't double power at 1/2 the impedance because they have weak power supplies.