MB Quart QAA4250 plus Z6's = Audio Bliss?

[Colin+M 10+ year member]

What do you guys think?

Would this amp (4x250 rms) be a good match for the power hungry BA Z6's?

I plan on bi-amping as well.

Thanks,

Colin

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[Echo42987 10+ year member]

perfect match up....

U and me are going to have the same system!

 

[diatribe 10+ year member]

I wonder how the Q amps will react to a 3 ohm load. They have a switch for 2 or 4 ohms, which way are you going?

 

[Colin+M 10+ year member]

I wonder how the Q amps will react to a 3 ohm load. They have a switch for 2 or 4 ohms, which way are you going?

From what i read in the manual, you can set it to 2 ohm and it will take 4ohm loadas well on that setting, so i am thinking 3 ohm would be fine. You just can not set it to 4ohm and run 2 or 3 ohm load.

 

[denim 5,000+ posts]

if done right that should be sweet from my guess

 

[alphakenny1 10+ year member]

sounds like a great combo. that mb amp has gobs of power.

 

[GSteg 10+ year member]

I dont think that amp will have any trouble powering any car audio speakers.

 

[Intercooler 10+ year member]

My QA is slated to arrive by UPS tomorrow. I plan on powering the CDT's with it. Can someone explain what difference you will see when using 250x2@4 Ohm compared to 250x2@ 2 Ohm? If the speakers can take it then what is the advantage or disadvantage of one over the other?

 

[FoxPro5 5,000+ posts]

My QA is slated to arrive by UPS tomorrow. I plan on powering the CDT's with it. Can someone explain what difference you will see when using 250x2@4 Ohm compared to 250x2@ 2 Ohm? If the speakers can take it then what is the advantage or disadvantage of one over the other?

There is a switch for either on the amp....most likey used if you are running subs bridged at a 2 ohm load. According to the manual:

LOAD IMPEDANCE

​

This optimizes the output section to match the speaker impedance. With the switch in the up

position, the impedance is set to 4 (ohms). With the switch in the down position, the

impedance is set to 2 (ohms). The setting on this switch should match the impedance of

the speakers connected to the amplifier. Failure to do so may cause damage to the speakers

and/or amplifier.

​

Bridging

​

The QAA4250 is capable of bridging the rear channels to create a three-channel amplifier. This configuration

is typically used to drive stereo components plus a subwoofer. When using the amplifier in bridge mode, the

Right-Rear (RR) input becomes the sole input for the bridged channel. The front channels remain independent

and require their own signals. The speaker terminals are labeled for both 4-channel and bridge mode

operation, please refer to the diagram for proper load connections.

​

NOTE: When bridging the amplifier with the load impedance selector switch set to 2 (ohms),

the ideal rear channel load impedance is 4 (ohms). If the load impedance selector switch is set to

4 (ohms), the ideal rear impedance is 8 (ohms).

 



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[Colin+M 10+ year member]

I bought a QAA4250 last night, now i must await its arrival.

 

[FoxPro5 5,000+ posts]

I bought a QAA4250 last night, now i must await its arrival.

DId you go w/ that ebay seller then?

 

[Colin+M 10+ year member]

Yeah, Audiosavings...

$429 shipped BNIB with a one year warranty through them.

Not to shabby

 

[GSteg 10+ year member]

good thing you didn't go through ikesound. took them 2 months to get me my amp and i just got it on monday

 

[Intercooler 10+ year member]

Got mine today //content.invisioncic.com/y282845/emoticons/naughty.gif.94359f346c0f1259df8038d60b41863e.gif

Anyone want to see pics? It is awfully thick //content.invisioncic.com/y282845/emoticons/yumyum.gif.0556df42231b304b9c995aefd13928a8.gif

 

[Colin+M 10+ year member]

I would love to see some pics since I have one on the way

colinohara11@hotmail.com

Thanks