Your Questions About Class T Amps

George asks…

precision power amplifier power ratings???

I just bought two old school precision power amps. I'm into the old school stuff... The model numbers are PC1400.2, and PC4400.2 they are the metallic gray, curved power class amps. Made around 8-10 years ago. Looking for the power ratings for each amp; or a website to find them. I have been searching online for a few weeks, and came up with nothing! I think the model number designates the power rating, but i don't think so....

Jesse Roth answers:

You could find the specs on here...


just below the kenwood HU specs.

You could also try this...


cant find specs on the pc1400.2 as of yet. I'll post it once i find it.

Hope this helps.

Nancy asks…

What do I need to make this MTX box run?

A friend passed on to me an MTX 8" subwoofer in a bandpass enclosure. It's small (approx 2.5' L x 10" W x 10" H ish) and will take up just the right amount of space in my 2005 Civic.

I don't know the specs, I just want to hook it up to the factory stereo and get a nice extra punch of bass. At this point I'm not concerned with all the fine tuning of a high end audio system (that'll come later), I just what to run this box and enjoy my music a little more.

What do I need? I'm looking at amps on eBay and I know I just need a mono amp.

Any suggestions as to how many watts/amps?
Class D? (what does that even mean?)

What about the wiring? 10 ga?

What do I need to plug it into the stereo?

Best Buy wants to charge approx $200 to hook up this little sub, I just think with a little research and some help from the public, I can hook this up myself.

Thanks for your help everyone!

Jesse Roth answers:

Sparky is correct....

As for Class D amps.....that would take a long time to type..and explain...and would easily get confusing.....
The short ..class d amps are switching amps....which means the outputs of the amp turn on and off rapidly increasing efficiency(90-95%)..and less current draw ( power requiments ) from your car to produce the power for your sub

Class AB most commonly used in car amps for years and still common in car and home amps...are about 50-55% efficent due to the outputs stay on at all times and swicth back and forth depending on the linear wave of the music....thus producing more heat..and requiring more current to run.....etc etc and

for more detail
link here( how class d amps work and the differnces)

James asks…

Here is is one for all you electricians,volts measure what? amps?watts?

I'm having a 60 year-old brain freeze, been 43 years since High School shop class, I can't remember what is measured by volts, amps, or watts, the only thing that I remember is that ohms measure resistance, Not really important just want a refresher.
I know that one measures volume, one measures pressure, and then what?

Jesse Roth answers:

Musicman's post was the best so far. There are flaws in comparing electricity to water, but the analogy is so easy to understand that it is pretty much universally used.

E is voltage, I is current, R is resistance...E=IxR, I=E/R, R=E/I is called Ohm's law. It gives the relationship between them. Watts=VoltsxAmps, a watthour is one watt flow for one hour or 100 watts flow for 1/100 of an hour.

More than you ever wanted to know, LOL.

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