Wwest, I am not an accoustic engineer, I was just explaining what was pleasing to my ear. I totally agree with you that the enclosure is instrumental to the sound emitted. The JL subwoofers that Sloth and I have, however are supposed to be installed in the type of enclosure that we currently have(huge speakers on opposite ends of box). I also had the chance to hear two 6" subs in the same type of configuration(box on shelf) and mine sounded much better.

Out of curiosity, what do you do that you know so much about this topic? I am just an audiophile.

John

 

 

Like I said Wwest, I don't wqant to seem rude but what you are still questioning is just too basic to go over it with you, and I've reached the conclusion that you obviously don't want to reason either no matter what, so its would be a waste of time, as far as me, I'm only interested in what ER996 finally went with and how it turned out.

 

Carlos,

There are some men you just cant reach... and thats what we got here today, a failure to communicate.

I guess we should just get used to wwest/willard piszing all over what we say and think every time the question of how to improve the audio systems in these cars come up. This is the third time that this subject matter has come up that he has said the exact same rubbish.

wwest/willlard,

People come on here asking b/c they want to know what others have done in their 996, what their experience has been, and what works. You seem to have a decent theoretical knowledge on things, but IMHO your application of it is faulty. You should really try to find a properly built car audio system (not a boom car, please) to listen to some time so you can first hand hear the difference. It is one of those things that if you have never been in one, you could never fully appreciate it. Point aside, you keep missing the basic premice of audio... if it sounds good to your ears then go with it. Right or wrong, that is the bottom line. So if you are happy with your 4th order bandpass enclosure with 5.25" mid-bass drivers, and all the issues associated with... then more power to you. For myself and others, we will take the simpler, larger speaker enclosure with its associated issues... and more power to us.

 

Sloth,

I have to agree with you, and ZeeZee has also warned me about that, thanks. I was a little slow and fell for it initially since I missed those previous threads about the same subject with the same problematic rising up so I only arrived to that conclusion after this thread

Oh well now I know, next time I wont be dragged to a senseless and useless side debate that responds only to the obscure interests of one member, and keep to the original poster's questions

 

BTW here is coule of pics of a two 10" sealed fiberglass/MDF custom enclosure fitted behind the seats, you know, for those that can hear the difference

 

Carlos/Sloth,

Do you get vibrations in your rear window? I initially did but I stuck a piece of weatherproofing strip between the window and healiner and it worked.

 

That is nice looking work Carlos. I have seen photos of it before, but never the up close photo.

No vibrations from the rear windows here. In fact, I am very pleased with the lack of vibrations from the car itself... other than the subs. Time will tell and the amount of bass you push from the speakers can make a big difference. I tend to keep my bass settings relatively low.

 

Sicaone,
Same exact thing as Sloth, no vibrations at all and though my bass is usually tweeked very neutral like Sloth, during testing and experimenting, no vibrations under high bass outputs either

PS: Thanks Sloth.

 

Ah, the light shinith brightly....VERY BRIGHTLY!

SICAONE: "I was just explaining what was pleasing to my ear"

SLOTH: "...you keep missing the basic premice of audio, if it sounds good to your ears, then go with it. Right or wrong, that is the bottom line."

Boy, miscommunication abounds.

And: there is no "wrongness" involved.

I've been discussing hi-fidelity, high quality, sound reproduction that religiously replicates, as closely as possible, the sound in such a manner that you have an audio listening experience comparable to having been at the actual recording session, concert hall, symphony hall, etc.

But you (y'all??) are talking about the actual "listening experince" as with reproduction techniques modified to fit a given environment. Now, first I must say that I have never seen a spectrum analysis of the "white noise" comprising the typical automotive environment "at speed".

But my suspicion would be that it starts well above the "bass" level, probably even above the high end of the bass level. What that would mean is the "best" "percieved" listening experience might result from the "filling in", "excentuating" of the musical content below where the automotive noise spectrum begins.

But even so, I remain uncertain as to whether the same thing might not be accomplished just tweaking the "bandpass" excentuating the lower frequencies and then let the OEM speakers do the job, assuming something like a Bose or ML system, or high performance speakers of any modern design/type.

And, carlos,

I hereby retract my offer until I have a chance to use a spectrum analyzer to verify that my factory supplied speakers will provide as much "boosted" low end bass fill in as a twin 5" tuned enclosure with sub-woofer amp and bandpass filter.

I may do that by simply turning up (dramatically) the Bass level on my sub-woofer/amp equipped LS400 and then verifying that the OEM C4 system will meet the same criteria using the spectrum analyzer to compare.

 

What do I do...???

Well, mostly my reponsibilty is to drive my wife to work each day, and then
drive her home in the evening. In short, I guess you could call be a "kept
man". As long as she will have me, I'm perfectly willing.

You can look us over, and the company we founded in 72, at strobedata.com.

And a bit more at teamseattle.com.

My career, life's work, has always centered around electronics. Moved into the world of digital computers in 1969, haven't had time to look back since. Back about 87 some idiot made me a "manager", but by then my electronics skills were pretty out-dated with respect to what the company was doing and the skill level and skill set of most of the employees.

 

ER996:

If you go for the footwell location, go with the 10" - the two fives won't produce much "real" bass. Two 5's just can't move much air. The Porsche/Bose system uses 2 fives, and it produces a lot of midbass, but very little "low" bass.

Definitely look for another source for the rear deck box. $2k sounds like a LOT! I think you'll get the best low freq's because you'll be able to get a larger enclosure back there, which in turn will get you bass that goes lower. Will sound much more accurate. Not to mention, you won't have to tear up your car.

Good luck!

 

well I managed a 10w3 in the back and it's extremely low and takes up no space, almost the same as the bose. I am a finatic with audio and built my own box out of mdf 5/8's and got the precise airspace inside and of course caulked, sealed and carpeted it all myself. The result is truly amazing for one 10. It is a 10w3 d4 granted running dual 4 ohm voice coils together at 2 ohm as my ppi 5440 amp sees it on the single channel. it is rated at 150 @ 4 Ohm and at 2 ohm I figure it's at about 200 or so. It is very clean and I am not even close to 1/2 for the gain. I do need to get an external crossover for sure though as the one in most if not all amps suck. They just skimp on the frequency roll off. I would have done this sooner but just got into accident so who knows if the car will even be around, I hope it gets totaled out personally as anything less than pretty much perfect annoys me. buy the way I must say and I have said it before Carlos' box is gorgeous.

 

Thanks SPR. Have you guys tried Poly-fill? its and easy trick I have used for years and works well. By increasing the air density inside the box, the box behaves like a larger airspace box yielding a fuller sound, just like that!
Here is an old article explainig it http://www.integracaraudio.com/carau...ces/fiberfill/

 

Carlos:

That is a beautiful installation but may I ask what, or where, did you locate the airflow, bass tuning port, it isn't visible anywhere in the pictures.