As well, I have my zapco ag amps gained at zero,and they rip!

 

I purchased 2 MTX amps and the new Eclipse CD8445 (not shipping for 3 weeks). I puchased the MTX amps for the quality and the fact that they support the 8v to tie in with the CD8445.

This post almost gave me a heart attack.

Glad to see they really do support the 8v.

 

u really would not benefit by having 8 volts of input, 4 is more than enough for most amps including mtx

 

The input voltage is differant depending on which series of amp..

If we are discussing recent product it is as follows.

MXA amps(FS amps) Maximum 5V RMS.
Thunder 2004 Maximum 8V RMS.
Thunder 2005(being released this month) MAX 10V RMS.

As TIM stated, it is important to level match your system carefully. The signal input into the line driver must be clean. Find the clip point of the CD player then back off slightly on the volume ****. Then continue down the chain.

 

I am surprised that no mentions the fact that my system is set-up wrong already.

Setting the MTX amps Gain at "8 Volts", but only giving it 5 Volts, is a very bad thing, is it not?

I have read many, many, times, and heard people say, that setting an amps gain higher than the actual input voltage is worse than what a lot of uneducated people do, which is set it at maximum output(lowest input voltage setting).

Isn't this true? Is what I'm doing bad in that I am somewhat underpowering the amps by not giving it the voltage that it thinks is coming in?

THANKS AGAIN! [img]smile.gif[/img]

 

Is it cool to use full 8 volts coming out a PLD 1? does that supply a clean 8 volt signal?

 

You have the right idea but its the other way around that would be bad.
The way you have it now youre amp wont reach full power,you set it to reach full power @ 8 volts so you need to give it 8 volts

 

^Yeah this thread is starting to hurt my head
actually the input limit is just that the limit. The answer MTX gave you (dont do 8v do 5v) did not fill me with confidence it is not overbuilt and if you over drive it you will smoke something, but I think you are fine with the gains off max
huh... the amplifiers preamp stage (there is only one) is always going to be in the circuit even if turned down, but yeah the amps S/N should be lower with the gain turned down (I dont know if the systems S/N ratio will be better since there are now 3 gain stages (HU, Line driver, amp). BTW from an SQ point of view I wouldnt sweat S/N specs too much.

I have never really gotten the point of a line driver. Does it really make you louder?

[ February 17, 2005, 06:49 PM: Message edited by: JohnVroom ]

 

I do not think that is correct, the gain setting is not a voltage matching circuit of some sort. It is a control of the amount of gain the amp provides the input signal. As DWVW said most amps can put out FULL rated power at 0 gain (provided there is enough input voltage). If the HU has to little voltage output (say 1 volt) you would have to crank up the gain to reach full rated output. That’s it, no magic… (except in transistor theory, that is where the magic smoke comes from)

BTW I didnt mean to say anything like MTX is anything but a good amp. It just isnt overbuilt (it is not customer proof)