long shot but worth asking...
long shot but worth asking...
Author
Discussion

rick111s

Original Poster:

397 posts

256 months

Tuesday 18th October 2005
quotequote all
i want to make a rear shelf for the tuscan to hold two 6x9's.

so here's the longshot.. does anyone have a digital outline of the shape of the rear shelf that i can have a copy of please? or is it just down to carboard and make one myself?

thanks in advance.

justinbaker

1,339 posts

271 months

Tuesday 18th October 2005
quotequote all
Rick, I am sure there's one on ebay I spotted ..... hold on...

http://cgi.ebay.co.uk/tuscan-speed-six-speaker-shelf-from-a-tuscan_W0QQitemZ4582216646

or item number 4582216646

rick111s

Original Poster:

397 posts

256 months

Tuesday 18th October 2005
quotequote all
thanks for that.

will got down that route.

R555SSH

5,006 posts

245 months

Thursday 20th October 2005
quotequote all
Caution caution caution... TVR has rubbish in car audio because they are interested only in the engine noise (rightly so, perhaps.

Have had a custom install done that looks mint. The cabinet sits behind theseats, houses a 10" sub, two aluminium face rectangular 6 by 9s, and is trimmed in Alcantara and leather and looks totally 'stock'.
Email me and could send you a pic of the job. Guys who did it were Compoact Car Audio in Aylesbury.

Oz

rick111s

Original Poster:

397 posts

256 months

Thursday 20th October 2005
quotequote all
i'm not really after that good a install but do value your advice. what i'm after is something a little bit better then the standard speakers hence the rear shelf idea.

thanks

TimW

3,848 posts

270 months

Thursday 20th October 2005
quotequote all
Why put the 10" sub on the same self as the 6x9's as the sub is going to be distorting the noise of the 6x9's... and if its powerful enuf it will slowly wreck them..

R555SSH

5,006 posts

245 months

Friday 21st October 2005
quotequote all
Good point Tim.
With limited space in the TVR, these questions were adressed with the following measures:

1. General quality of the materials and install. Cost about £1500 all in.

2.The MDF, dynamat-lined sealed enclosure box they made is an extremely rigid contraption. Separate air enclosures for the 6x9s ensure no cross-vibration or frequentic interference.

3. The 6x9s and the sub are run off an Infinity amp in the bazk. 4 channel, 56 W RMS. The sub takes two of those channels, bridged. Thje 6 x 9s are handling bass and midrange. These sounds are naturally less prone to interference than the mid-or treble stuff, which is handled entirely separately, thus:

4. At ear level on the B pillar, there are further 4" inifinitys, handling mid and treble.

5. At the front, in line with the mirrors, two tiny treble pods handle the hi-hats and vocal well.

6. My ride is now pimped. And it looks like TVR themselves have done it.
bring on the rave, dave.

adair1972

156 posts

246 months

Monday 24th October 2005
quotequote all
Hi Guys

Interesting thread, I am a new Tuscan owner and having settled for the sound of the engine in recent weeks, now feel ready to sort out the sound system! I have a box containing 2 x 10inch subs complete with amp which I first thought of placing in the boot and simply upgrading the in-car speakers. Any experience of subs in boot and sound travel through to driving compartment?

Any advice would be much appreciated.

Keith

TUS 373

5,050 posts

304 months

Monday 24th October 2005
quotequote all
Replace your exhaust cans and then listen to them. Much more aural pleasure than any ICE system can provide.

Sorry, probably not much help, but I think it is still a very valid point!

R555SSH

5,006 posts

245 months

Tuesday 25th October 2005
quotequote all
Hey adair

Not sure if there is much to be gained by putting sound in the boot.
Two probs:
1. The exhaust cans that TUS 373 (and me) so rightly wets his pants over,are scientifically proven to be louder than any other thing on earth, including yo mama. The cans rattle directly beneath the boot and dB for dB, would make your subs sound like the pissy squeals of a bullied child.
2. The petrol tank site literally between the boot and the passenger compartment. This mass of fuming liquid, much like the sweltering lava welling in the Earth's bowels beneath Mount Pinatuba, will insulate bass sounds very well. Not much may get through to you, though I have not heard this setup to actually prove it.

You are better off putting a sub under the seat (if one of a good design can be found), or in the front passenger footwell (and the passengers should damn well be grateful), or having a dedicated enclosure built, like my pimp-ass (actually quite middle cl-ass) self.

Experiment with the box temporarily, but also remember that you need to drive around with it to see if the bass gets through- it all sounds nice and loud in the garage at a standstill, until you drive and hear the bass disappear down the exhaust's glistening throat.

A further idea- if you insist on the box, then it may be an idea to cut a hole (at your own peril) in the rear shelf behind the seats, to create a sound connection between cab and boot. That will, though, only make the exhaust sound louder too, and the smell of the dead bodies you store in the boot will also permeate the cab.

Decision, sweet decision.

Oz


>> Edited by R555SSH on Tuesday 25th October 15:58

justinp1

13,357 posts

253 months

Tuesday 25th October 2005
quotequote all
This is something I have also looked into.

I have measured up the size of the current 'ear-level' space and it does seem large enough for a larger speaker, especially if it were oval shaped. That said though, this really isnt the best place to have speakers as they are inches away from your ear.

A word of warning with the rear installs: I read on a similar thread of someone who had a 'professional' rear install done, and on his way home had the distinct smell of petrol. On investigation it was found that the proximity of the petrol tank mean that it was accidentally perforated by the 'installers'.

If you were creating a 'box' for the speakers, it would be best to get the professionals do it though. From my experience as a sound engineer, the quality of the box is just as important as the speakers themselves as they are effectively acting as a sound board for the speakers, and with a bodged install you may find the bass is a mass of wool and buzz, and basically not good.

Would love to see photos of how someone has got on, as I am looking to get back into Tuscan ownership at xmas and that is my first priority. Oh that and Nitrons...

ec1 eex

400 posts

265 months

Tuesday 25th October 2005
quotequote all
With a sub in the boot I'd be more concerned about the boot lid vibrating away and probably passing those vibrations on to the back window.

These are my woofers which I know aren't subs, but perhaps the idea can be if inspiration. The box was made out of fibreglass and then covered in leather to match the rest of the car.

Phil

rralston

701 posts

268 months

Tuesday 25th October 2005
quotequote all
ec1 eex said:
With a sub in the boot I'd be more concerned about the boot lid vibrating away and probably passing those vibrations on to the back window.

These are my woofers which I know aren't subs, but perhaps the idea can be if inspiration. The box was made out of fibreglass and then covered in leather to match the rest of the car.

Phil


Now that looks very

Toying with the idea of an install myself - how did you construct the box?

ec1 eex

400 posts

265 months

Tuesday 25th October 2005
quotequote all
Making the box was a long journey
First I made a cardboard model by hacking bits of cardboard with a stanley knife until it fitted. This was stuck together with tape. I then measured the rough dimensions and after buying a maths book on 3D geometry, worked out all the angles and lengths of the shapes. I then made a much more sturdy carboard model with those figures and ended up with:


The top and sides of the carboard box (but not the back) were my mould for the first layer of the outside. I then removed the cardboard and after putting MDF rings inside for the speakers built up some layers from the inside to add strength.

The inside of the car was the next part of the mould - I first put layers of tin foil and gaffer tape over the carpet and covered the rest of the area with plastic sheeting as you really don't want fibreglass resin on the carpet. The top part of the box was then put in place and a line drawn around. I then made a single layer of fibreglass over the bottom and back and after setting, removed it to again build up some layers.

The two parts were then fused together with more fibreglass and sanded down. I bought a whole hide in portland grey from the same people that supply TVR (Andrew Muirhead) and paid a car upholstery place to stretch the leather around the form. If anyone is interested in buying some leather from me...

A bunch of cables threaded round the car and an amp later I was all done.

There's no way I'd make such a box for someone else as it took me way too long. If anyone wants my dimensions to make their own box (on a non-profit basis), contact me by mail and I'd be happy to share them.

I did originally want the speaker box to be made from MDF. Only one place out of 3 that I took my cardboard model and dimensions to thought that they could cut the wood for me, but they wanted £280 which I thought was outrageous for cutting only 10 pieces of wood.

At the end of the day, my speaker box looks like it always belonged in the car. But having the speakers in the centre of the car like that does nothing for stereo separation. I've got tweeters up front, and mids where the original speakers were.

rralston

701 posts

268 months

Wednesday 26th October 2005
quotequote all
Full points for patience

It does look very unique as well - I'm going to start looking into head unit, amp and speakers over the next few weeks - might go the same way/or put them in the back, I'll see what options I've got!

ec1 eex

400 posts

265 months

Wednesday 26th October 2005
quotequote all
Possibly not that unique as I was inspired by the speaker box in Colin's car shown in this thread:
www.pistonheads.com/gassing/topic.asp?t=93232

adair1972

156 posts

246 months

Thursday 27th October 2005
quotequote all
Just a quick thanks to everyone.... Back to the drawing board I think (literally, if designing one of these enclosures)! Wish me luck!!

Keith