A little car audio history...

[ramos 5,000+ posts]

contradiction not found...
"So what is required are amplifiers that use the available electrical power more efficiently

BUT with no loss of fidelity or power. Several options are available. Class B amplifiers are

notoriously inefficient due to the fact that they are linear devices and in their traditional form

waste about 70-80% of the power supplied to them as heat. Class A amplifiers do not even

think about for mobile use as their efficiency is even worse. So what options are available?

Class D is the one of them. For most audio buffs, class D has been given a bad rap owing to

the rash of really bad class D amplifiers which have been introduced to the mobile market

over the years. There are several reasons why these amplifiers sounded bad and were

unreliable. The bad sound was due to the fact that the designers/copycats had no idea on

how a class D amplifier functions. The reliability was due to bad design and almost zero

knowledge of class D amplifiers.

This technology has made leaps and bounds over the past 5 odd years. New semiconductor

devices have become available as well as a better understanding of this type of amplifier."

The contradiction is from previous statements made by Stephen Mantz himself several years back when the fullrange class d amps started hitting the market. I distinctly remember post on another forum down talking the pdx amps specfically... Now he's making full range class d....... //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[sleazebagger 10+ year member]

The contradiction is from previous statements made by Stephen Mantz himself several years back when the fullrange class d amps started hitting the market. I distinctly remember post on another forum down talking the pdx amps specfically... Now he's making full range class d....... //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

oh...

 

[ramos 5,000+ posts]

I beg to differ... I've used ONE Mantz product since 1989 and I will NEVER knowingly use another.

POP Yeah I played with one of the newer offerings for a week or so. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[sleazebagger 10+ year member]

POP Yeah I played with one of the newer offerings for a week or so. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

what did u use and what do you mean by POP!. did it go up in smoke?

 

[ramos 5,000+ posts]

what did u use and what do you mean by POP!. did it go up in smoke?

I tested a leviathon. On paper, 2 bridged looked like the cats arse for an active 3 way front stage. Wired it up on the test bench, fired it up, and POP there went my test drivers. The volume on the connected head unit was at 3 out of 30. The amp had a turn on/off pop that rivaled the bombs dropped on hiroshima and nagasaki. //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[sleazebagger 10+ year member]

I tested a leviathon. On paper, 2 bridged looked like the cats arse for an active 3 way front stage. Wired it up on the test bench, fired it up, and POP there went my test drivers. The volume on the connected head unit was at 3 out of 30. The amp had a turn on/off pop that rivaled the bombs dropped on hiroshima and nagasaki. //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

That sucks!. I read on a review that the same sht happened to another guy. he heard a pop in one of his tweeters and that was it.

WTH, I thought this amp was the one!

edit: I'm gonna call zedaudio and ask about that problem.

 

[smgreen20 10+ year member]

I'm looking for some new amps, right now it's down to:

1st) Audison LRx5,1k

2nd) ZED audio (2) Kronos, (1) Leviathan

3rd) PG Ti2500.1, PG Ti600.4

Space is at a premium, but that's what I'm looking at. Until I found the Audison I was thinking ZED all the way.