How to Make a Bora slower..

[Mr ©harisma]

Answer is to add more weight. What better way to do it than to add a stereo The car in question is a 01 MKIV Bora 4motion. I would like to thank FHRX for doing the earthing kit and sub box, another awesome job.

Source for the car is a Pioneer 8650mp, 6.5v pre outs, T/A, 11 band EQ some of its better features. I have also added an Ipod adapter so that the Ipod can live in the glove box away from eyes and be controlled from the front.

From the engine bay the standard battery, although quite good, had to go. I had an Optima D34 left over from my old car so straight in it went. Then of course the terminals where around the wrong way so that had to be changed as well. Just for fun I decided to add an 300A earthing kit to the engine bay as well just for good measure. Battery has since been replaced with D34m blue top as it has a second set of terminals so I can crank it all day and if I need to jump start I wont damage my gold terminals. Plus its easy to hook up the old battery if I am out somewhere at a show etc.

[Mr ©harisma]

Then we move onto the front stage. After mush thought I decided to stick with un upgraded version of the existing Boston splits that I had. The SL-60's fitted the bill excellently. With separate dockable xovers it also meant that future expansion would be made easy as they will take bi amp and bi wire and have axis and atenuation control.

A custom 12mm MDF spacer was used for good mesure for the mids and the last pic shows where the tweeter was mounted on the drives side, high in the kick panel. Height is no problem as the stock grills up the top constantly fool people into thinking the tweeters are behind the factory grill. 2 sheets of Dynamat per door and a dynazorb pad behind each mid.

[Mr ©harisma]

Rears in this case are totally stock. They are faded out so I can not hear them anyways and HP @ 200Hz 12db/oct

Now I have 2 Audison amp with one being over 40cm long. The other is tiny. The first SRx2 powers the front stage, it produces 2x 65WRMS for the Bostons and the larger SRx2s power the sub with 1x 600WRMS. I really had no choice if I wanted a stockish looking car but to mount them on the rear of the sub box.

The sub box is a gem made by FHRX. It has 1.1cuft sealed internal capacity and features a 36mm MDF backing, 2x25mm MDF sides, 25mm Perspex across the front, 2 red leds, mirrors and dec board. The first lot of picces are with the older Boston G5 124 that I had and the last ones are with the new OZ Me 12.2 that I have. The install was designed to be as stealthy as possible with the hidden boot and engine bay being the only stand outs. Dec board is currently in the process of being re-done.I hope people can get some idea's from this

[ranton-inc]

Cool Stuff man!

Whats with the Foam balls in the sub enclosure tho..

what is this dyna sorb pad behind the mid..

and why arent your photos hosted offsite so you can display them loud and proud

[Lukev85]

nice hook up, makes me wanna post up pics of my boras sound system lolz

[MattyT]

An excellent install. FHRX is one of the premier audio guys in OZ!

I really wish there was an equivalent guy over here in WA. I've had my stereo at 3 different stores and none of them can make it sound good

[Mr ©harisma]

Cool Stuff man!

Whats with the Foam balls in the sub enclosure tho..

what is this dyna sorb pad behind the mid..

and why arent your photos hosted offsite so you can display them loud and proud

foam balls was an idea, sealed box and they bounce around. It was to hard though to keep enough in so it doesnt work as well as I hoped and I couldn't be bothered to take them out lol.

Dynazorb is an absorbant pad that you mount behind a speaker to absorb the rear waves. The theory is that is will help elimate the rear waves interfearing with the next cycle from the front hence reducing cancellation and making you speaker louder. They cost about $40 a pair. Focal Chant are better by they are $100

I have some picces on facebook lol

[glidn]

yeah nice bit of gear, i just cannot quite figure out the location of the tweeters, or least the one tweeter that is, i could not find the other tweeter.

Does that location give you very good imaging?
Also does it create the rainbow effect all?

Just really interested.

[Soundofav6]

thats some awesome gear you have there Mr ©harisma.

Firstly, I always LOVe the bora. Secondly GO the BOSTONS !!

One question, for the speaker on the door, do you have seal the speaker inorder to make use of the Dynazorb ?

[glidn]

thats some awesome gear you have there Mr ©harisma.

Firstly, I always LOVe the bora. Secondly GO the BOSTONS !!

One question, for the speaker on the door, do you have seal the speaker inorder to make use of the Dynazorb ?

door does not have to be sealed for dynazorb to work.

[Soundofav6]

Ic .. thanks glidn.

Also, whats the rainbow effect ? is that what happens when you listen to Elton John Lol

[glidn]

Ic .. thanks glidn.

Also, whats the rainbow effect ? is that what happens when you listen to Elton John Lol

I'll give you the proper explanation when i find it.

There is abit to this. But generally the sound it abit all over the place.

Instead sounding in front of something or behind something. It sounds like the trumpets on the dash but the bass drum is on the floor of the car, in a nutshell.

I found a really good article explaining the "rainbow" effect and what you can do to try and prevent it from happening.

Sometimes simply relocating the tweeters can make a huge difference into how a system sounds.

[Soundofav6]

So it is a "bad" thing ?

I will google it in a sec.. sounds interesting.

[Mr ©harisma]

yeah nice bit of gear, i just cannot quite figure out the location of the tweeters, or least the one tweeter that is, i could not find the other tweeter.

Does that location give you very good imaging?
Also does it create the rainbow effect all?

Just really interested.

Ill take some better pics of both tweeters on Sunday. I only posted the pic of the tweeter on the drivers side. The problem is all tweeters have a different response so it wont be perfect for all tweeters but it may be worth looking around that are to find it.

Imaging is awesome, it took about 2.5hours to get it right. Everyone comments on how good the channel separation is. Depth is great but of course height isn't perfect ( I am 190cm and sit in the car straight up, bad back lol ) but on the whole it is good. Most people can not tell. As with all well staged front's, the sound is coming all from the front. The sub is a little out of phase ( by about 60-80deg ) but on the whole blends in very well.

Gear is ok, its by no mean great but of course they are installed to maximise the potential. Dyanzorb pads are only there to absorb the rear waves. They are only one part of improving free air response from a mid. They can be used in a sub box to...

[qsilverza]

I like the front hook with the distro block and optima.

Have some SL60's hooked up in my Dads mitsubishi, they sound good and go loud.

Interesting spot for the tweeters, I tested the depth in the standard location and couldnt/wouldnt get them to fit without cutting, thinking about mounting at the pillars...

Like the red leds on the box but not so sure about the look of it.

All in all, a nice install.