Worth the extra $ for higher preamp voltage???

[chevy_man 10+ year member]

Since you match your gains on your amp to your HU output, going with the 5v pre-outs is going to let you turn the gain up more. This will give you more power output without giving you crazy distortion which happens when you crank the gains with a low pre-out signal. This is the reason every signal processor has an adjustable output, usually to 8-9v since most amps only have a gain setting high enough for 8v.

 

[Phoenix Risen 10+ year member]

Since you match your gains on your amp to your HU output, going with the 5v pre-outs is going to let you turn the gain up more.

couldnt be more wrong.

a higher preout voltage will actually let you keep your gain lower and still get the same power out of your amp.

that said. anyone who is saying preout voltage matters. answer me one question.

why is it that a lot of the old school amazing sounding decks have 2mv pre-outs?

 

[billabongcr 5,000+ posts]

couldnt be more wrong.
a higher preout voltage will actually let you keep your gain lower and still get the same power out of your amp.

that said. anyone who is saying preout voltage matters. answer me one question.

why is it that a lot of the old school amazing sounding decks have 2mv pre-outs?

//content.invisioncic.com/y282845/emoticons/popcorn.gif.32dd9e22fd77e77bc3c907062768fcd2.gif

 

[Phoenix Risen 10+ year member]

//content.invisioncic.com/y282845/emoticons/popcorn.gif.32dd9e22fd77e77bc3c907062768fcd2.gif

ive got my flame suit on. im good to go.

 

[billabongcr 5,000+ posts]

ive got my flame suit on. im good to go.

made a solid statement. cant wait to see whos guna step up

 

[Suicide Bobb 5,000+ posts]

When you turn up the gain on the amp, you do so to match the pre-out voltage on your deck. The input voltage of the amp goes downward as you turn it clockwise (turn it up). Thus, when matching the input voltage of the amp with the pre-out voltage of the deck, you don't need to turn the gain up as high for a higher voltage pre-out. The further you "turn up" the gain on the amp, the higher the distortion levels are. All of these things that I said are FACTS.

Now, whether or not your ears will be able to discern the difference in distortion between, say, 1/4 gain and 3/4 gain is subject to the individual. I myself can EASILY notice the difference. Here's a really easy way to tell: Bring your amp in the house, and hook it up to a car battery (or a battery charger). Connect it to a pair of speakers. Connect a source to it, but don't play any music. Start with the gain down, then turn it up. Notice the increased distortion? That static-y noise? There's proof for you. The distortion is most certainly less noticeable when music is playing, but it is still noticeable to a good ear.

that said. anyone who is saying preout voltage matters. answer me one question.
why is it that a lot of the old school amazing sounding decks have 2mv pre-outs?

That would be because they used line-drivers frequently back then, instead of high pre-out voltage decks.

Wonder why we rarely see line-drivers in SQ installs and more often see high pre-out voltage decks in our current time? One thing they failed to notice when they started toying around with line-drivers was that by adding another electronic do-hicky in the system; which required separate ground, power, remote, and rca inputs; they were introducing further noise. Sure, it's possible to eliminate that noise, but that requires a lot of time, dedication, experience, etc.

Not to mention that it's more convenient to have a deck with high pre-out voltage than having to wire up a separate line driver. It became the obvious choice.

I'm sure I'm going to get a lot of "tl;dr", but for those who read all this, I'm sure it will clear things up.

CLIFS:

These are facts - More gain means more distortion. Higher pre-out voltage means the gain is lower when the voltage matches. Thus, higher pre-out voltage means lower distortion, ceteris paribus.

 

[Suicide Bobb 5,000+ posts]

made a solid statement. cant wait to see whos guna step up

How was that?

 

---------- Post added at 10:57 PM ---------- Previous post was at 10:56 PM ----------

 

ive got my flame suit on. im good to go.

Flame-on! lol

 

[Phoenix Risen 10+ year member]

good to know.

that actually makes sense instead of people just saying because it is.

thanks bobb

 

[Suicide Bobb 5,000+ posts]

good to know.
that actually makes sense instead of people just saying because it is.

thanks bobb

Glad to hear it makes sense!

 

[VWBobby 10+ year member]

Good explanation Bobb... What's funny is that's the same thing I was saying in my post but not in as much detail.

 

[DBfan187 5,000+ posts]

low impedance > high voltage preouts //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[Suicide Bobb 5,000+ posts]

Good explanation Bobb... What's funny is that's the same thing I was saying in my post but not in as much detail.

I did notice that. What they needed was detail. It's like when people hop in a "This vs. That" thread and say that "This" is better without backing it up. It does nobody any good unless you 100% trust that persons opinion, regardless of what it is.

 

[Suicide Bobb 5,000+ posts]

low impedance > high voltage preouts //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

I would like some detail here //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Buck 5,000+ posts]

I would like some detail here //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

I think he means get RCA's with low resistance, either that or put your line drivers really close to your amps (that would create lower resistance, less length).

 

[Suicide Bobb 5,000+ posts]

I think he means get RCA's with low resistance, either that or put your line drivers really close to your amps (that would create lower resistance, less length).

Oh ok