best headunit for SPL

Well Sally, I see your point and agree with it as well. Where I was going was read from the topic title and the increase in SPL in most vehicles directly relates to the transport vibration worse than a bowl of jello in an earthquake. So I guess we are both right, just two different ways to interprete the same question. Another contender here is the MB Quart NRA450 with the 30second anti skip buffer and high voltage low impedence outputs. Get them before they are gone though, they are no longer in production.

well the thing is i was just wondering if any head unit would better than another because i dont like the sony i hate everything about it im going to swap it out anyway  and if i could gain some SPL with a new head unit that would be a plus .im looking at some new head unit thanks for all the info

Forbidden & hamfist:

Hehe listen to you guys "laser sled servos" and "Slap me and call me Sally" and what-not! Everyone else too... 

I've had the "bass-skips-the-CD" problem before and I've *never* had $500 to throw at an Eclipse HU to solve the problem.  Ya know what is practically free?  Weather-strip the deck.  For $2.50 you can grab a bunch of closed-cell foam weather-stripping and then just put bits of it over the screw holes that attach the deck to the frame of the car.  Take the DIN housing out and weather strip over where the bolts attach that to the frame of the car.  Then just attach everything normally... bolting and screwing through the weatherstripping.  The foam will absorb huge amounts of vibration. 

Track 2 on Eazy-E's It's On has some of the most vicious bass drops I've ever heard... way more fun than even bass-mekanik or tone CD's...  it would knock my Alpine CDA-9833 out for a solid 4 or 5 seconds a shot... for 10" of 1/4" weather stripping and about 25 minutes .. never had the problem again..  stops skipping over cobble-stone roads and stuff too.  (Cobblestone is *all over* downtown Richmond.  Its disgusting.)

Nodestiny:

Yea for massmarketed stuff that *everyone* has.. Pioneer makes an absolutely outstanding product... I had a Pioneer 7600MP ($225) that I replaced with an Alpine CDA-9833 ($350) (for that matter, what thieves steal two amps, two subs and *only* the face of a deck?) and the Alpine is easily the inferior product... in every respect... despite much, much better manf. specs.  The only thing I can give the Alpine is the fact that it can find MP3's a wee bit quicker.  The freaking little "///Alpine" badge on the upper right corner of the deck is even peeling off!!

Hmm.  Okay I'm still behind the rest of the class Forbidden...

All that resonant frequency servo.... what?  You're trying to say that the little part of CD player that points the laser at the disc has a resonant frequency and this usually happens to be at 60hz, making it prone to vibration during bass-notes and Eclipse HU's have a 'tuned' little laser servo sled device that is much lower helping prevent that sonic occurance? 

While my Home-Depot solution only address direct acoustic shockwave?

Huh?

No, your great home depot solution is designed to isolate the chassis of the cd player from the chassis of the vehicle, thus aiding in keeping a resonant frequency of the dash (a much larger area to collect from) from travelling into the chassis of the cd player. And it works great as well. I will gather the tech info from Eclipse on the servo's, what they are designed to do and the low resonant frequency laser sled and post the info for all to see. This may take me a bit as I am super busy here at the shop right now but I will find it.

PS. I think you are far from behind in the class.