polarbearx

Hi,

I am facing a relatively small problem with the new pair of 6*9 Kickers 6930. They went as rear replacement in my Impala and therefore almost perfectly fit the original openings. I am still breaking them in, but it seems that they lack bass response. With 70RMS per speaker I was expecting them to deliver deeper and louder bass.

I took a look from underneath (o boy you can sleep in Impala's trunk) and saw a lot of gaps there, so the top and the bottom part of the woofer are sharing same "air space"

I've installed 6 1/2 components in the front doors completly sounddeadened and the bass response is amazing. The front actually delivering more than 75% of the bass than rears.

Well, here is the question. Make the rears work in the enclosed environment (make boxes for them) will increase bass output? Kicker however suggests that these speakers are designed to work in open air.

Anyway, will try to figure out myself, but if anyone has any advice/recomendation to share - will really appreciate it.

Thanks.

Denonite

iTrader: (1)

Close up all those holes..cover them with dynamat type material, and use some expanding foam to seal off the rear deck from the trunk as much as you can. Guaranteed bass...I always do this and my systems play without my sub on with very good bass response.

MTT

iTrader: (17)

you're having cancellation issues (rear wave meeting up with the front)
Do as the post above suggests and it should help

the fronts are putting out 75% of the bass as they are 75% closer to you

polarbearx

Thanks guys. Have to get dirty again :-(

jalat

iTrader: (6)

rear fill FTL

polarbearx

Hey Jalat, I am not sure what are you talking about (fill FTL) but the picture of the sub on your profile asks for respect ;-)

Anyway I just got from home depot got some expanding foam and filled all gaps directly or indirectly between trunk and rear panel. Really messsssy and sticky stuff this foam is :-(

Did not do speaker holes yet - seems to be delicate task, need sun light :-)

SSSSSSSSSSSSSssssSSSsssorrrryyy, the finger got stuck to the keyboard :-)

jalat

iTrader: (6)

FTL = for the loss
basicall saying that i am against rear fill.

my avatar is a midbass speaker from focal's $180 000 home theatre speaker tower. i think it looks cool

polarbearx

Thanks for the plain language :-)

Anyway I am going to kill all the holes. I just gave a run with "half-way-done" insulation and already see (hear???) the difference. Will seal it as a SUBMARINE tomorrow :-)
As for the sexy sub - i trust ONKYO. But this heck of a different story. In a nutshell:

Panasonic Full HD home Projector scratched to tremendOOOOOus 150 inches screen
Feed by Toshiba A2 HD DVD & Sony PS3
Onkyo (is it 605????) with 5.1 complete set up. And all these in 20 * 12 feet room with high ceilings :-) Pulled all baseboards to make wiring invisible. All through wall plates. Sweet :-)

Sorry for OFF TOP :-)

polarbearx

Well - we are done. As it was advised all holes are filled with the expanding foam (such a sticky substance - wear gloves please) from inside of the trunk.

The rear deck openings somehow were sitting on the edge of the speaker;s rubber band so I did trim them and nicely sealed with the same expanding foam. Very delicate work. Speakers were covered with heavy duty clear plastic to protect them as foam inevitably would expand onto the woofer surface. Waiting for all this stuff to dry out to remove plastic + gently trim = test the results.

Thanks for the advice.

Njord

Could you post some pics, and possibly what you did in more detail.
I'm thinking of doing the same.


You'll have to give us a final update on how well this worked for you.