I'd like to upgrade my rear speakers with 6.5" Blaupunkt GTx663 Triaxial Speakers.

The only problem I see is the rear side panel that covers the speaker, the speaker location is in a position that makes it hard to fit the speaker cover over the panel due to the contours of the panel.

Has anyone experienced this problem and has a solution that works and still looks good?

Any suggestion would be greatly appreciated.

Thanks in advance...

 

why would you want a speaker cover over the speaker pannel when the speaker is behind the pannel.

 

Good question, it seems the speaker holes in the panel are in the wrong location for the 6.5" speaker.

Rather than drilling more holes in the panel to accommodate, I'd like to utilize the speaker covers that comes with the speakers and cut out a 6.5" hole in the panel and fit the speaker cover over it.

Just leaving the holes in the panel don't seem to do the speaker justice and would like to cut a 6.5" hole in the panel to get better sound out of the new speakers.

let me know if that makes sense.

Thanks,

 

This is what I did in my old car:



Basically used MDF wrapped in vinyl to build some surrounds so that the speaker had a (nearly) flat surface to mount to. I only did it this way because they were way to deep to mount in the stock location behind the panel.

 

Damn, that's a big *** speaker!

I don't think it's 6.5", but regardless the opening for the 6.5" speaker is located in a different location.

It's lower and the contours of the panel are in the way.

I may have to create new side panels in order to make it work and still look good.

Any other advice out there?

 

it wont sound as good. you won't get the punchy mid bass.

i took the side pannel off, made adapters to fit a 4 1/4 alpine DDDrive speakers in there. i used expanding foam to make a seal and cut off the exces foam. put the speaker in and put the pannel back on and it was good to go

 

don't know if this helps but I did this in the back of my cab. Doubt the panel is the same but perhaps you can get some ideas.

https://rennlist.com/forums/showthre...ferrerid=76285

Mark

 

Paully,

how do you figure that cutting a hole in the panel over the speaker and installing the speaker cover over it will not sound good.

Do you think the sound coming from the little holes in the panel will be better?

 

You're talking about mounting the speaker still to the stock location but cutting the pannel over it and installing a grill so you get better sound out?

The first couple of times I read this I thought you were going to mount then to the pannel. I don't see why you couldn't. Don't know if it'd be worth the 1-2% your sound quality would go up. Think you'd be better off putting some 6x9's in there, depending on the year, and making sure the space behind the speaker is is sealed.

 

Hi from the UK, I've been quietly enjoying your forum for some time
this is how I did mine ...modifying the factory grille, not quite what your after but it looks stock

http://www.tipec.net/_forums/viewtopic.php?f=25&t=10637

Page 2 shows the rear install, not an expert just having fun with the car

 

Mount the speakers to the panel doesn't seem like a good idea for a number of reasons.

First the cutout in the sheet metal for the 6.5" speakers is in a location that makes the mounting of the speaker to the panel impossible because of the contours of the panel. The panel is not flat and mounting the speaker to the sheet metal seem like a better way.

And do really think the sound quality would only be 1-2% better if I cut a hole in the panel the same size as the speaker and placing the speaker grill over it? You don't think the speaker grill is less obstructive that the little holes in the panel?

Also, are you saying that 6X9' speakers are better than a 6.5"? You have a '89 and know that Porsche put a 6.5" cutout in the sheet metal next to the 6X9' to allow this option.

I'm not sure I follow your logic...

 

Kongsodoken, the rear speaker is exactly how my 6.5" speaker will be installed.

The question is how do you fit the panel back over the speaker? Did you add small holes in the panel like they did for the original speakers or did you cut a hole in the panel the size of the speaker and place the speaker grill over it?

I'm trying to figure our how to deal with the contours of the panel.

 

the speaker grilles are available from Porsche, I removed the extra plastic from the back of the grille then cut a hole in panel.....it is the 10 speaker factory option grille, part of the speaker is still covered but I think it is much better than the drilled holes and it looks completely factory..
I'm no expert but the sound quality is very good IMO

 

I was going to say, mounting it to the pannel is a bad idea.

In the later models you can put a 6x9 in because that was the factory size for the 10 speaker options. There was also a different covering but I don't know if you can buy the grills seperatly I'll be doing this in the summer probably.

As for sound quality a 6.5" speaker is going to give you better sound quality because it is a round speaker. However if you're wanting some more bass and don't have a sub I'd look in to a 6x9 in that space.

I really don't think you'll get a noticable sound quality difference from stock to a speaker grill. Are you setting it up for SQ and trying to squease every last bit out? If so I'd say do it. If you have the time and want to. Do it. Let us know if you can tell a difference. I would be interested.

If you're really wanting better sound from that space, no matter the speaker size, seal the area behind it. Make sure all the air behind the speaker stays there and can't travel around it to the front. Also look in to what volume of cabinet you're speaker works best at and try to match that number. That will do a lot more than cutting the OEM pannel to put a cover on the speaker.

 

pkt1213, maybe I'm not describing this clearly enough.

The original rear speakers do not have a grill over the speakers, but small holes in the side panel. Can we say that is a given?

If I install a 6.5" speaker in the optional cutout in the sheet metal behind the panel, it will be in a location that makes it hard to mount any type of grill over the speaker because the panel is contoured in that location.

So what I'm looking for is a recommendation from others that have installed a 6.5" speaker as to how they dealt with the issue of the panel that covers the speaker.