bing

to be more specific than the title, here is my question.

i have a PPI DEQ-230 and my deck is a Nak music bank (mb-75) which has low pre-out voltage. i will be running a single PPI PC450

i am thinking of picking up an audiocontrol 4.1 to bosst the signal strength, but here is my little question.

the DEQ has only one set of inputs and one set of outputs. would it make sense to run my front pre-out from my Nak into the DEQ then out into the 4.1 which splits into front and rear for my 4 channel amp.

in the manual for the 4.1 all the diagrams show the 4.1 right after the deck, with processors coming afterwards.

are there negatives from running the equalizer before the 4.1, will the 4.1 take away from the DEQ's effectiveness.

thanks in advance

chev2

Yeah the max output voltage on those MB75's isnt to great.. Its under 2v's if i remember.

A line driver is normally used for 2 things.. 1st is the usual, lower the gains on the amp.. But 2nd is it reduces the chance of induced noise through the RCA's (Usually that Long RCA running from the front to the back).

By putting it after the DEQ (Assuming your putting the DEQ in the trunk) you are only gaining the ability to lower your amps gains.. You might be happy with that.

My suggestion if you want to increase your signal voltage is to buy either a AC or PG straight line driver (Just a line driver) and place it as close to the deck as possible. Then us "Y"s to feed the front and rear sections of the amp from the DEQ. Use the gains on the amps to fade the front and rear.

The straight line driver is probably cheaper then the 4.1

[ March 22, 2004, 09:40 PM: Message edited by: chev2 ]

bing

i have a PLD-1 already, but i want to use it for something else, maybe i wont.

i was going to put a 2 way crossover after the DEQ if i went that route, ARC MX-1 or AC 2xs, or Nak EC-200 or something like that.

i was just thinking that the 4.1 could do both the linedriver work and the splitting work at the same time

[ March 22, 2004, 09:51 PM: Message edited by: bing ]

chev2

Try the system with out the line driver. See if theres any noise etc.. That will tell you if a LD is needed.

The xovers or even the DEQ might provide the increase in voltage to lower the amps gains.

slow/n\low

Use the PLD at the front of the car run it to the input of the Deq230 and call it a day,

Line driver goes at the front of the car [img]smile.gif[/img]

bing

yeah that is one option, but i want to use the PLD to boost the subwoofer preout on my home receiver to 8 volts.....hahahaha

and run some subs in my room for kicks.

also, the PC450 will be under-powering my subs, wont a nice 8+ volt signal remedy that slightly?

i guess i am going in circles here. perhaps another line driver and a 2 way crossover are the answers.

slow/n\low

"also, the PC450 will be under-powering my subs, wont a nice 8+ volt signal remedy that slightly?"


Not at all, one has nothing to do with the other.


I am just wondering why if you desired to buy a four.1 that you would want it after the deq230?

Just put it in front of the eq [img]graemlins/thumb.gif[/img]

but the four.1 really does nothing for you in your system other than signal boost, or an ajustable 1 band [img]graemlins/dunno.gif[/img]

[ March 22, 2004, 11:56 PM: Message edited by: slow/n\low ]

bing

^^^ gotcha,

i was under the impression that boosting a 2 volt signal to 8 volt would allow me to turn the gain up higher without havig reliablity problems.

didnt mean that it would increase the amplifiers actual output. but simply make it safer to use all of its power.

that translation blows, sorry

JohnVroom

At what point do amplifier inputs clip? Has this changed over time?