OPINION...I Need SQ amp for 1 10" Sub...prefer class A or AB

[crawlinYJ 10+ year member]

Modern class D amps have over come the poor THD and dampening factor of the earlier class D amps to make the class vs SQ issue moot.
IMO, class D amps are better suited to making use of a cars limited power supply, and therefore are a better choice for sub amps.

Class A - A/B amps won't have the desired fidelity if the cars power supply can't keep up with the dynamic range.

even a class d will break up with not enough power supply, but it is more noticeable with a class a/b since they are more commonly used on mids/highs or full range systems.

 

[donpisto 5,000+ posts]

Find a ZED Audio Deuce, Zapco Ref 500, or even Sundown SAX-100.2.

I sold mine just last month for $135 or $150 shipped, I had no use for it and needed the money.

Another amp I'd like to add, not sure if mentioned already, is the oldschool Soundstream

 

[DidUHearThat? 10+ year member]

even a class d will break up with not enough power supply, but it is more noticeable with a class a/b since they are more commonly used on mids/highs or full range systems.

Of course, but since a class D is usually about twice as efficient as a class A - A/B that effectively doubles your headroom within the same power supply. A 500 watt class A amp would draw as much power as a 1000+ watt class D amp. Since subs generally need about an order of magnitude greater amplifier power than mid/highs the difference in using class D sub amps is significant. Otherwise dynamic peaks in a class A sub amp will probably be effected by the cars limited power supply, making class D amps the superiour choice for fidelity if the limited powers supply is the weak link. Which it usually is.

 

[crawlinYJ 10+ year member]

Of course, but since a class D is usually about twice as efficient as a class A - A/B that effectively doubles your headroom within the same power supply. A 500 watt class A amp would draw as much power as a 1000+ watt class D amp. Since subs generally need about an order of magnitude greater amplifier power than mid/highs the difference in using class D sub amps is significant. Otherwise dynamic peaks in a class A sub amp will probably be effected by the cars limited power supply, making class D amps the superiour choice for fidelity if the limited powers supply is the weak link. Which it usually is.

if we are going for fidelity, the charging system is usually up to snuff.

like i agreed earlier, class d's are making some serious leaps in the world of SQ.

and if we are getting this picky about setups, the charging system is a relatively easy and standard upgrade for those that are this serious about sound.

 

[GAM3OVR 5,000+ posts]

why not a class BD then?