hi i'm only new to this website and am not too sure how to find stuff, so forgive me if what i'm asking is something fairly common.

i have a 2003 hyundai elantra with a sound system that i'm generally pretty proud of. it consists of an Alpine 7998R head running a Boston GT22 amp to DDDrive 6inch splits for the front, MRV-F340 to DDLinear 6inch coaxial rears, for the bass I have two MRD-M1000's each with a stinger 1-Farad Capacitor, each running a Pheonix Gold Titanium Elite series pro 12 inch in a large sealed box. there is 3 Eclipse 7inch screens and a (soon to be upgraded) Viscom dvd player. there's also an XBOX for long trips with a power inverter made into the center console.

the problem is that i really seem to be lacking mid bass, like when i listen to stuff like the chilli peppers and what not, i miss the bass lines. i am still getting the kick and stuff and all the high end but just missing that little bit in the middle. is is a problem with my stuff or just a poor setup?

anyone with any idea please share!

Poor setup? Seems like you would have spent more on entertainment then on your car. How could it be a poor setup?

Sorry for not having a helpful answer.

firstly, are the speakers installed properly? i assume they are but you havn't mentioned it
(i mean is the door deadend and is the speaker well sealed to the door?)

The DDDrive's are your problem. They just aren't very bassy speakers. Did you buy them because you can't fit big speakers?

ok, i figured that i would've missed a lot, so i'll try answer,

yes there's definately more money gone into the entertainment than the car itself, too much my mum says...

the speakers have been installed really well and the whole car has been sound deadened, so far we have been able to accomplish 139.9 db out of it, while set up to listen to music clearly. there is very little noise/music escapes the car. at that volume with all the doors/hatch closed it is only just possible to hear it over the exhaust.

the speaker has been well sealed to the door. sorta. it keeps popping screws out. at first i noticed a rattle coming whenever there was a nice bit of bass and assumed it was distortion but upon inspection i found it to be one of the four screws had loosened up. i tightened up the right side and haven't had any problems with it since but the left one keeps working loose.

and wejust got the DDDrives because they are a good speaker. although my best mate has got a full focal K2 system in his car and it blows everyone away with its huge sound, so i'm kinda thinking of upgrading to them. or something like them. the boston is a great amp and i kinda feel like it's being wasted on the alpines. power wise that is. it's too big.

oh, and i have the crossover on the head unit set so that the subs are at 125hz with 18db/octave and zero level reduction, the rears at 125hz with 18db/octave, also zero level reduction and the fronts at 100hz 18db/octave dropped with an -8db reading in the level display. the sound still comes from the front it's just mid-bass empty

100hz for your fronts? maybe try dropping it to around 80 (although power handling may suffer slightly).

if you're still after more midbass, it may come down to a speaker change (DD, Boston, PG etc.) or fitting some 8's

- Stooge007 out

Yeah Maybe try dropping the high pass filter on the fronts to around 70-80hz.
also maybe pics of the doors would help a bit as well.
are your doors sealed? who did this and what was used to do this?
cheers
Mark

Get a set of elite components to go with the subs these will leave the DDDrives for dead in every department.

Are they brand new speakers, if so run it in first. At least 60hrs, before judging them.
All new speakers need to be run in.

will the amp not have enough power to drive the dd speaker, also is it have been setup to have a full pass or high pass only ? i just recently changed my amp on the same speaker (going to bigger amp), and all the mid bass coming out.

nah the dddrives are pretty ordinary. upgrade them. problem solvered. so all that is left to do is get you favoutire cd and go listen to some speakers.

Cheers

I have the 5 inch DDdrives in my car - midbass? forget it... mine are crossed at 200Hz. Although it starts to dies off about 250Hz... I have a 10 playing up to about 200 - but I'm still missing a bit in between

The cones are very flexible, magnet not very big. The vocals and tweeters are reasonable which is the only reason they're still in my car. Since yours are the 6 inch version, I figure you would be missing 150Hz-200 and below until your 12inch sub kicks in. If you want to keep the speakers - get a pair of 8 inchs (if your sub is crossed over high) or a single 10(if your sub is crossed over low)

im running my fronts at about 63hz atm, definately lower your x-over point on the fronts
what are your fronts being run off?
do they have anough power to produce substantial midbass
and make sure the front dors have enough sound deadener
it helps more than you think!

Some one who uses Monster cable would say that...

Id say that judging by all the experiences ive seen online,most the time a couple of hrs is sufficient. Usually single drivers + valve combination in the home,guys comment on hundreds of hrs required.

hmmm
k2 power would be really nice

but first have you sound-deadened the doors..inside directly behind the speakers and behind the plastic door trim. Have a look at dynamats web site how to install the stuff. The difference is amazing Cost is about $300plus to do the job properly for both doors. Look at dynamat xorb or focal Plain-chant for use directly behind the midbass speakers.

http://www.dynamat.com/

http://www.focal.tm.fr/accueil_en.htm

i also have a 7998r and use the 18db/oct @ 50hz on my front 6.5inch alpines (but these are the spx series not ddlinear). Works setremely well
setting my front door speakers above 80hz sounded aweful, i have no idea why you have setup your system this way unless you love listening to the system at insane levels. For a louder midbass system as you have heard its best to go a 3 way setup like the k2 powers

definitely lower the pass frequency
6.5"s play ok to 50Hz or so

hey guys sorry i've been so busy no time to reply, i followed the suggestions and lowered my crossover to 100hz still 18db/oct. it sounds much better, though it doesn't run quite as loud, but sounds huge better. the doors have been completely deadened. dynamats all round. we made a point of spending a lot of time getting it pretty dead. the intention when building the car was to go for huge sound btu still pull a reasonable spl. just mucking around the other day we turned the fronts down a bit and managed to get a 146db reading. shoulda seen my face. bloody awesome.

now with everything back to where it should be we got a 140, still great. problem now is that it's kinda a bit harsh... i'm talking to the guys this weekend about putting a set of utopia three-ways in the front. that should solve any problems.

as soon as i get time i'll get some photo's up of the system. cheers all.

focal have replaced the utopia lineup so you might set some better deals on the old stock

100hz still would sound bad but if you have a separate midbass and midrange this wouldnt be such a problem. Definitely invest in 3way setup

good luck

Hi Brodie, there's a great product on the market that can fix your problem, i suggest you read the review Marc Rushton wrote on the MaxxBass 103. If you would like to listen to a unit, a JB HiFi store in your area will have stock in a couple of weeks.

Why is a 3 way setup going to solve all his problems?
BOCKY has a two way setup in his 2004 Elantra using Boston Pro's and scored 136/150.... best score Australia wide in Amateur class so far

As for fixing the mid-bass, definitely drop the crossover points. I was chatting to Fhrx about it, how I was missing midbass, and thought that perhaps my crossover point was too low (75Hz) and that the fronts were trying to play too much sub-bass and thus I was losing power in that range. I was surprised when he informed me that, because my front doors had been so completely deadened and sealed, they would produce sub-bass very well, all the way down to 50Hz if required.

So he drops the crossover point to 50Hz, and I tell you what, the difference was unbelievable. The mid-bass provides the punch, whilst the subwoofer provides the deep undertone of each thump, which really just sounds wicked.

Anyway, if all that fails, get a better woofer...

You might want to re-word that post a little Tom. Sound deadened doors don't produce more subbass and midbass, they just prevent cancellation and internal reverberation when the speakers are crossed much lower.

What I meant was it enables the speaker to play that low, and loud, and not sound like sh!t
I'll go read what I wrote now