Class A/B vs. Class D power for Subs

[96GTIVR6 10+ year member]

Is there actually a benefit to running your sub stage with A/B power instead of D? Like audible benefit, not just a spec sheet war advantage.

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[GemaRastem 10+ year member]

I would say there isn't really an audible benefit. Class d's are more efficient which when you are running a high wattage substage, is important because your electrical system will have less strain

 

[tRiGgEr 5,000+ posts]

The Cons outweigh the Pros IMO.

 

[jrouter76 10+ year member]

The Cons outweigh the Pros IMO.

what are the pros and cons, I`m thinking about getting a phoenix gold xenon x200.4 amp

 

[FoxPro5 5,000+ posts]

Is your sub not another speaker in your system??

 

[hoodkid 10+ year member]

a/b amps have way lower distortion, but there what like 40 - 60% effiecent and class d amps are like 60 - 80% effiecent or something like that

 

[soulstace 10+ year member]

Some class D are up to (or over) 90% efficient.

 

[hoodkid 10+ year member]

I have never seen an amp over 90% efficent

 

[jacka 10+ year member]

well, i dont think its anything audible, but your electrical system will love you for running class d with the subs. unless of course youre running lower wattages like 400-600.

 

[soulstace 10+ year member]

I have never seen an amp over 90% efficent

I have. I own one.

 

[tRiGgEr 5,000+ posts]

class D efficiency at full capacity - 75%

class A/B efficiency at full capacity - 60%

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class D efficiency at 1/3 capacity - 70%

class A/B efficiency at 1/3 capacity - 35%

Class D amps will have a higher distortion point at max capacity.

Class A/B amps will have a lower distortion point but a lower efficiency also.

Most class D amps include seetings geared for subs. IE - lower LPF/HPF settings. Subsonic filters.

And on most class A/B amps, the frequency range on the HPF/LPF is much higher.

 

[jrouter76 10+ year member]

class D efficiency at full capacity - 75%class A/B efficiency at full capacity - 60%

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class D efficiency at 1/3 capacity - 70%

class A/B efficiency at 1/3 capacity - 35%

Class D amps will have a higher distortion point at max capacity.

Class A/B amps will have a lower distortion point but a lower efficiency also.

Most class D amps include seetings geared for subs. IE - lower LPF/HPF settings. Subsonic filters.

And on most class A/B amps, the frequency range on the HPF/LPF is much higher.

ok thanks

 

[hoodkid 10+ year member]

I have. I own one.

and what amp is that

 

[soulstace 10+ year member]

mmats

Efficiencies over 90%

At full capacity it will most likely not be 90% though. So you're mostly right.

 

[hoodkid 10+ year member]

http://edesignaudio.com/product.php?cid=4&pid=6&tab=Specs&cur=USD

and has anyone noticed the nine.1 is only 65% effiecient?