What kind, and how much of a difference would i notice with 2v , 5v, or 8v preouts??

[squeak9798 5,000+ posts]

It seems that when you have a higher preout voltage that you usually can turn the HU all the way up without it clipping...hence getting more out of your speakers and amplifier. Right?

That has nothing to do with the preout voltage, but rather the design of the headunit.

 

[squeak9798 5,000+ posts]

Here's my experience, take it for what it's worth.
Built a sealed Tempest running off a PG amp with 500 watts. Sounded very good in my car. Excelon HU with 4.5v pre-outs.

Put it in the GF's car and the bass was GONE. Pioneer HU with 2v pre-outs. Turned the gain up all the way, still not much bass. Also noticed the Polk coax's didn't sound very good and they're amped.

Long story short, her HU has 3 levels of loudness and I had to use the MID one to get back the missing bass and make the speakers sound full and loud.

There seems to be more to it than "just match the amp gain to the pre-out", at least in this case there was as everything sounded like crap compared to running off of my HU.

Completley different cars, completely different setups, completely different headunits.

Hence, completely invalid comparison.

 

[squeak9798 5,000+ posts]

going from 2 to 5 the sound difference was very impressive to me, going from 5 to 8 wasnt as noticeable.

Then you didn't reset your gain properly (if at all).

Or, you switched decks which means there are a thousand other variables at work (different settings, etc).

So, again, invalid comparison from which you can draw no conclusions.

 

[squeak9798 5,000+ posts]

exactly what I thought...see, the truth comes out.

Don't take truth from misinformation.

You can't draw a valid conclusion from invalid experiments....i.e. comparing tens of variables at once....which is what those people saying "oh, I noticed a huge difference" are doing.

 

[squeak9798 5,000+ posts]

I will let you know tommorow when I go from 2v in a Pioneer to the CD5000 8volt.

Completely invalid comparison.

 

[xploit2 10+ year member]

Ok now what kind and how much of a difference would I notice going from 55ohms indepence from an eclipse unit and a 100ohms indepence in a pioneer unit.

can u answer this one squeaky //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[squeak9798 5,000+ posts]

Anyone with a single headunit can do the experiment themselves.

Anyone want to guess as to how one can run an experiment to compare differences in preout voltage with their headunit?

Time for Ghosthunters....so I'll let you all come up with the answer as to how this can be accomplished //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[squeak9798 5,000+ posts]

can u answer this one squeaky //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

In all honesty, you probably won't notice an audible difference

 

[yacob.naif 10+ year member]

ooh, ooh, i want to score squeak points!

do you reset your gains at different volume levels?!

 

[DBfan187 5,000+ posts]

also keep in mind that you'll never see these types of voltages while playing music (unless you're near max volume with 0dBF material.)

 

[squeak9798 5,000+ posts]

ooh, ooh, i want to score squeak points!
do you reset your gains at different volume levels?!

Ding Ding Ding.

Now, obviously, resetting your gain so that you reach full volume at a volume level of 10 rather than 35 is going to change how loud the music is for a given volume setting, and it will limit how much of the volume range you can use.

But to run the simple experiment of testing the "sound differences" at various preout voltages, you can reset the amplifier's gain to reach full power output at a lower volume setting and then at a higher....and listen to both at the same SPL levels.

You won't hear a difference between them.

If the preout voltage affected sound quality we would all be driving around with our volumes maxed out because the higher preout voltage would "sound better".

 

[iceteebone 5,000+ posts]

Anyone with a single headunit can do the experiment themselves.
Anyone want to guess as to how one can run an experiment to compare differences in preout voltage with their headunit?

Time for Ghosthunters....so I'll let you all come up with the answer as to how this can be accomplished //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

**** i forgot ghosthunters was on //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif by the previews from the last one it looked good //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

too bad this forum didn't have a multi-quote option //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[squeak9798 5,000+ posts]

**** i forgot ghosthunters was on //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif by the previews from the last one it looked good //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

No good evidence this go round.

Next week should be interesting though.....results from the latest Shining hotel investigation //content.invisioncic.com/y282845/emoticons/naughty.gif.94359f346c0f1259df8038d60b41863e.gif

 

[iceteebone 5,000+ posts]

No good evidence this go round.
Next week should be interesting though.....results from the latest Shining hotel investigation //content.invisioncic.com/y282845/emoticons/naughty.gif.94359f346c0f1259df8038d60b41863e.gif

i liked the lighthouse in florida. that was spooky.

 

[BlkonBlkFG 10+ year member]

WOW! Squeak is the man, hands down. //content.invisioncic.com/y282845/emoticons/eek.gif.771b7a90cf45cabdc554ff1121c21c4a.gif