Having speakers fitted to my M reg BG 1.6i and before they remove front door panels they want to know what size speakers I require, asking that as sizes are now 165mm or 130mm, which will suit the hole diameters the best. Also can anyone say if 52mm or 55mm depth are best for clearance on any internal gubbins ?

Any help welcome

DBenz

i think i fitted 170mm speakers which fitted straight in i don't know about depth but in my mates
he could never wind the window all the way down but in mine you can so be careful on what depth
you get but i am pretty sure that mine are 170mm

Cheers Dan BG,
I'll pass that on. The guy as he was having a last look at the current sony speaker box he reckoned on using, pending info, decided to look on underside and behold, mazda car range shown, and 1989 onwards was indicated, so perhaps we are on the right track, The depth into the door worries me, I read somewhere there is 45mm available, and he talked of 52mm and 55mm, so a 7mm template is required, but will the door trim fit back on ?

DBenz

don't know about that if you can't try fitting raised out 6x9's i think someone on here has got some he just cut a hole in his
door card and attached them that way so there on show, but i think 45mm sounds right (i htink thats what mine are) all i know is that mine are pionner and they def do speakers that will fit

I have just bought 6-3/4" Speakers for the front from Rockford Fosgate, which are max depth.... I am mounting these by cutting the grill out of the door card and will eventually make fibreglass door pods for them.

On my last BG I had the same size speakers with less mounting depth (I dont actually know what depths they are.....) Trick we used was to wind the window down fully - and then put the speaker into the hole - we got away with putting 4mm nuts onto the mounting screws after putting them through the speaker. This was enough clearance to wind the window down fully and it still fit easily behind the door card. You can probably space it out even more than we did but I'm not sure what the maximum would be.
This wont affect sound quality because the door isnt sealed anyway - so it isnt changing a would be sealed box into free air. It was also cheaper and easier than buying or even building a wooden spacer.

Another thing to look out for is that the factory speakers in the BG have 3 screws holding them in, wheras most aftermarket speakers are 4 holes. The easiest install is to get speakers with a multi-hole edge (ie. can be mounted as 3 or 4 hole) otherwise you will have to drill new holes to mount the speaker with.
If you drill new holes - Drill them so that they are big enough for the screw to go through WITHOUT biting - and then use the little clips that ALWAYS comes with new speakers (the ones that clip over the hole and give the screw something to screw into).
You need to Paint any holes you drill so that they don't rust.

Edit: Alternatively - you can drill holes in the speaker rim for the screws to go through and use the factory mounting holes in the doors - I have heard of it being done but you have to be VERY careful because one slip and your speaker is munted.