[silence]

Curious what has and has not worked for others.

I'm working on adding a 10 to the passenger footwell/firewall.

I am running 1500gti JBL's infinite baffle as well.

As of now (and also limited by the space etc.) I plan to aim the sub essentially right at the passenger in about a 0.7 cubic foot sealed enclosure. Will have it's own amplifier and 12 or 24 db crossovers on either wide which I hope will allow me to integrate it well with my 6.5s and 15s etc.. Thoughts? Heck, even if it doesn't apply to my situation I'd love to see your install with at least 8s up front in a car!

 

[2DEEP2]

I've never installed a sub up front in any of my cars, but I have worked with a few sub up front cars.

1. The enclosure needs to be dead. I remember when Gary Biggs first put a sub up front in the Regal. No one knew it was there but for me it stood out like a sore thumb. His dash buzzed and was playing above 60 Hz.

2. I would not run an off center sub above 60 Hz. If you really want better 80 Hz to 125 Hz, get 8" mid bass. People talk about the circle of confusion, nearly every off center sub I've heard that smears the stage was also single off center sub playing the roll of midbass.

2a. I have heard center mounted sub play above 60 Hz and sound just like any other center channel install.

3. Down firing, centered firing straight back, center firing up or dual subs have all worked.

 

[silence]

Thank you for the response.

I already really have reached the maximum with the 6.5s I'm currently running in my doors. At least with the amount of cutting and modification I'm willing to do to this vehicle. They do play very well down into the 80-100hz range, but obviously one can never have enough mid bass.

My goal with this project was to better integrate the bass into the sound stage more than to increase the mid bass response. Perhaps I can play with crossovers and get a setup with it that provides the desired effect. That said, to keep the sub up front generally below 60 would mean what at first seems like an illogical crossover setup. My mids would play down to 85 or so with a 24 db slope crossover, my 15s and the 10 up front would see everythng below that with a 24 db slope as well, but then the 10 would have an additional crossover at 12 db provided within the amplifier set around 60. Obviously, the 60-85 hz range would be where I'd most benefit from better "integrating"the rear subs into the sound stage and I'd not be accomplishing anything to that end.

I'm rambling out loud.

Thanks again for the response, I'll be considering options/playing around with things.

 

[2DEEP2]

Sorry to hear your 6.5" can't get below 85 Hz. The heart of Midbass is 80 Hz to 125 Hz.

How high will your IB GTi play? Do you have Time Alignment (TA)?

Deaden your IB install and anything in the back and run it up to about 70 Hz and roll it off at like 18 dB/oct. With good TA you can get some good upfront midbass/sub without a constant pull to the back.

If you go the sub up front in the floor, plan to attenuate to get it add but not draw attention to itself.

 

[silence]

Perhaps I will be able to push the crossover on the mids lower, the number above reflects where it ended up with different amps and subs. I do not remember well tuning things as it was nearly 6 years ago.

I expect I'll have no issue with the 1500gti subs getting that frequency range to come up to my mids. That's exactly what got my thinking sub up front though... the concern that the 15s will draw attention to themselves at that frequency.

Thank you

It sounds like I better get the things installed which I know are right so I can test the other things in various configurations. Your advice will certainly save me time with that process though!

 

[tonny]

I've never installed a sub up front in any of my cars, but I have worked with a few sub up front cars.

1. The enclosure needs to be dead. I remember when Gary Biggs first put a sub up front in the Regal. No one knew it was there but for me it stood out look a sore thumb. His dash buzzed and was playing above 60 Hz.

2. I would not run an off center sub above 60 Hz. If you really want better 80 Hz to 125 Hz, get 8" mid bass. People talk about the circle of confusion, nearly every off center sub I've heard that smears the stage was also single off center sub playing the roll of midbass.

2a. I have heard center mounted sub play above 60 Hz and sound just like any other center channel install.

3. Down firing, centered firing straight back, center firing up or dual subs have all worked.

I do have a sub off center in my car in the front firing to the back off the car and it is playing up to 100hz without any problem of localization!
As long as everything os solid and there are no resonates and the sub is playing in phase with the rest off the system you can not localize it!

 

[BigRed]

It works great implemented right. I play mine up to 125hz. The box is .7 sealed in the passenger footwell facing the passenger. Check out my ram build. There are pics there


Sent from my iPhone using Tapatalk

 

[silence]

@bigRed sounds like what I'm doing.

I'm plowing forward and will adjust as needed or ditch it if that is needed.

Again, thanks for responses.

 

[pjc]

I did the same in my Tundra. There's my old build log on here still. The enclosure was pretty small... Maybe .4 or so if I remember correctly. It was an Exile slim 10". It didn't go deep by any means but the added impact on midbass was a definite trade off.

 

[silence]

I'm actually running the same sub in a very similar enclosure in my sequioa (not up front of course) and am very impressed with its low end response in that application. At least the 10" bm I am planning for now. .. I have two and if they sell I would be looking to upgrade, but obviously not to something "worse" for the application.

 

[pjc]

It was a great sub. It played fairly low. Not knocking it. But I definitely gave up some bottom end to have the sub up front.

 

[thehatedguy]

Personally I haven't ever had much success with a sub mounted off center playing much higher than about what Anthony says above.

 

[ndm]

How about a sub directly under each seat but board loaded where the bass is forced toward the front of the car. I contemplated doing this in my Jeep since it has deep tubs under each seat. The large battery is under the passenger seat and could be relocated to the rear cargo area where the factory sub used to be.

 

[2DEEP2]

How about a sub directly under each seat but board loaded where the bass is forced toward the front of the car. I contemplated doing this in my Jeep since it has deep tubs under each seat.

I heard AudioNutz's (Steve Head) Civic with subs under each seat, they play above 60 Hz and it worked great.

 

[2DEEP2]

I do have a sub off center in my car in the front firing to the back off the car and it is playing up to 100hz without any problem of localization!
As long as everything os solid and there are no resonates and the sub is playing in phase with the rest off the system you can not localize it!

Having a former life as a Noise Vibration and Harshness (NVH) Engineering, I think 80 Hz and up gets into a range that some can localize.

When I was an NVH Engineer I would locate things by ear down to 60 Hz and use the measurement tools just to verify.

It was a part of my job, so yes, I'm a trained listener.

That said, TA and attenuation and you can move the CX up.

If you don't listen to music that but bass in corners of the stage, you may never experience a smeared stage with off center midbass.

 

[BlackHHR]

2Deep2 is a qualified pair of ears. Been around a long time. What up Ant?

 

[HertzGuy]

This guy posted a couple days ago in the build log section, had a ten in the glove box. Looked pretty sweet. Should check it out if you haven't yet! IM him and I'm sure he'll give you some feed back!

 

[silence]

If nothing else this thread has convinced me to rebuild my doors. Still just 6.5s, but good ones!

Figure it can't hurt to improve the mid bass response anywhere I can.

I'll get a picture or two of where I'm headed with the 10" sometime soon too.

Again, thanks!