Mazda Rotary Club

General => General Technical => I. C. E. & Electrical => Topic started by: dreamers on March 26, 2007, 12:23:32 AM

Title: Can you get a premade 12" sub box into a rx7?
Post by: dreamers on March 26, 2007, 12:23:32 AM
I dont have the expertise or knowledge or time for building an install thus want to buy one but all the ones i see seem massive. I already bought the speaker b4 buying the box as didn\'t anticipate this problem.

Can anyone recommend a box?

By the way this is a FD i am talking about
Title: Can you get a premade 12" sub box into a rx7?
Post by: McCARTHY on March 26, 2007, 12:57:05 AM
Better to make one to be honest. Some of the pre-made ones will fit though.
Title: Can you get a premade 12" sub box into a rx7?
Post by: E.B.King on March 26, 2007, 09:00:01 AM
My advise would be to make one too! most of the pre-made boxes are way too big and dont need to be. There are some sites on the net which will calculate the size ranges for your box or if u know a bit u can do it with the values on the spec sheet of the sub (some knowledge of maths normally helps). Im putting 3 x 12s and 2 huge amps in the back of mine and they all fit so you shouldn\'t really have a problem!
Title: Can you get a premade 12" sub box into a rx7?
Post by: shaunwil on March 26, 2007, 01:01:05 PM
You could fibreglass a box into the spare wheel well.

How the heck do you get 3 12\'s in the boot of a 7 ??? I had 3 in an ax but the boot was nice and square and my subs worked at 0.75cuft !

Shaun
Title: Can you get a premade 12" sub box into a rx7?
Post by: E.B.King on March 26, 2007, 01:59:56 PM
well, 2 of my mates are sound crazy and wanted to attack my rex so we done a mock up and everything fit, will post pics up once its finished (or started even LOL)
Title: Can you get a premade 12" sub box into a rx7?
Post by: dreamers on March 26, 2007, 10:02:36 PM
Thanks for your responses.

Making one seems like a massive amount of work. I dont mind the putting boxing up the wood and carpeting it. That part I "THINK" is easy. Its the sawing and cutting out a perfect circle which worries me. How do I even start without power tools?!:2Confused

Curiously how do I get power to the boot? Can I use my existing amp power cable to bridge on to other things?
Title: Can you get a premade 12" sub box into a rx7?
Post by: interloper393 on March 26, 2007, 10:22:58 PM
i can make you a fiberglass mould and make you a box if ya like bud..
Title: Can you get a premade 12" sub box into a rx7?
Post by: dreamers on March 26, 2007, 10:53:41 PM
Hmmm... Thanks very kind interloper. How much are you asking for and can you give me an inkling of what it\'ll look like? Have you done one for yourself?

Lastly how quickly can you get it made - i am itching for BaSsSsS!
Title: Can you get a premade 12" sub box into a rx7?
Post by: interloper393 on March 26, 2007, 10:59:10 PM
Where do you want it in the boot bud? iv made them before, not for the rex tho lol. take me about a week, probly less :) cus iv got good at it lol
Title: Can you get a premade 12" sub box into a rx7?
Post by: dreamers on March 26, 2007, 11:12:17 PM
whereever. So long it looks/sounds nice and I have *some* boot space.amp is mounted dead centre on the back of rear seats more or less. So probably best somewhere kind of central though I can always have it to one side. But I would\'ve thought centre would be best for sound as well as weight distribution.
Title: Can you get a premade 12" sub box into a rx7?
Post by: interloper393 on March 26, 2007, 11:16:48 PM
how about 1 each side :D.. double bass lol
Title: Can you get a premade 12" sub box into a rx7?
Post by: dreamers on March 26, 2007, 11:21:28 PM
lol I would\'ve done but I stupidly bought an amp and wiring kit which will only allow the one :(

If I go for 2 i\'d have to rewire and buy another amp. :(
Title: Can you get a premade 12" sub box into a rx7?
Post by: interloper393 on March 26, 2007, 11:35:48 PM
its gunna look odd me tinks in the middle lol
Title: Can you get a premade 12" sub box into a rx7?
Post by: Archbish on March 26, 2007, 11:39:14 PM
You can mount a bass box in the wheel well without stuffing up the rest of the boot
(http://www.archbish.com/Bish2.jpg)
This gives almost exactly 55 litres without intruding into the boot, which is perfect for these darn 10" guns... *GRIN*
Title: Can you get a premade 12" sub box into a rx7?
Post by: interloper393 on March 26, 2007, 11:47:17 PM
bugger me there big lol, there not a prob to make :S lol
Title: Can you get a premade 12" sub box into a rx7?
Post by: mikeyh on March 27, 2007, 12:41:54 AM
bloody hell craig is there nothing u cant do lol
so with that in mind im looking to put either 2x10`s or 2 x12`s in my boot
so crack on with ideas for me pls lol
Title: Can you get a premade 12" sub box into a rx7?
Post by: interloper393 on March 27, 2007, 12:45:05 AM
im multi skilled :D
Title: Can you get a premade 12" sub box into a rx7?
Post by: mikeyh on March 27, 2007, 12:46:37 AM
good well crack on ill keep u busy for ages
Title: Can you get a premade 12" sub box into a rx7?
Post by: interloper393 on March 27, 2007, 12:48:31 AM
that sounds SOOOooo wrong!!

i`ll need a year off for all this work :P
Title: Can you get a premade 12" sub box into a rx7?
Post by: dreamers on March 27, 2007, 07:35:10 PM
Interlopper whatever you think is best. Let me know cost + postage before you start sawing lol
Title: Can you get a premade 12" sub box into a rx7?
Post by: dreamers on March 28, 2007, 09:33:07 PM
Interlopper have you thought of a cost yet?

Assuming you are still willing to make this for me (I know I am being impatient - apologies)  but I am eager to get my bass going!!

By the way Archbish that looks fantastic
Title: Can you get a premade 12" sub box into a rx7?
Post by: interloper393 on March 28, 2007, 09:41:27 PM
if you can give me the sizes of the speakers and where you wanting them then i cn price it for ya bud..
Title: Can you get a premade 12" sub box into a rx7?
Post by: dreamers on March 28, 2007, 09:43:23 PM
one 12 " sub woofer. I am not bothered where you put them. So long as it looks neat that\'d be great. As I mentioned amp is mounted at the back of rear seats pretty much in the middle.

I would\'ve thought anywhere towards the back of the rear seats would be great.

O, and preferably under parcel shelf so its concealed is most important
Title: Can you get a premade 12" sub box into a rx7?
Post by: interloper393 on March 28, 2007, 09:45:36 PM
can you send me a pic of your boot, better idear then lol
Title: Can you get a premade 12" sub box into a rx7?
Post by: dreamers on March 28, 2007, 09:49:43 PM
lol is standard like any other FD - lol

Just has an amp attached to back of rear seats. will take a pic
Title: Can you get a premade 12" sub box into a rx7?
Post by: RedRummy on March 28, 2007, 09:50:32 PM
*watches with interest*

:)
Title: Can you get a premade 12" sub box into a rx7?
Post by: interloper393 on March 28, 2007, 10:12:13 PM
If your amps on the back its gunna look poo in the middle?
Whats the length of this 12" cannon your puting in lol
Title: Can you get a premade 12" sub box into a rx7?
Post by: interloper393 on March 28, 2007, 10:14:33 PM
im wanting the hole boot made into a ice, have the design im aiming for, jus need the speakers lol.. it`ll be a full on fiberglass build tho so curves galore :D
Title: Can you get a premade 12" sub box into a rx7?
Post by: dreamers on March 28, 2007, 11:14:11 PM
I see I didn\'t realise you were doing full whack install. hmmm ...*thinks about his boot space*

Ok I will post sizes and pics tomorrow. Too dark and tired for me to do now.

Thanks by the way. :)
Title: Can you get a premade 12" sub box into a rx7?
Post by: interloper393 on March 28, 2007, 11:16:46 PM
Well 2 seats fits nothing so sod the boot space lol.. i aint used a  car boot for ages lol.. not since the body dump :evillaugh
Title: Can you get a premade 12" sub box into a rx7?
Post by: Archbish on March 29, 2007, 10:25:34 AM
Quote from: dreamersBy the way Archbish that looks fantastic
Cheers dude - all my own work!! *grin*
Title: Can you get a premade 12" sub box into a rx7?
Post by: dreamers on March 29, 2007, 10:26:12 PM
Ok here are pics

I show my old sub for 2 reasons - 1) i cant b bothered to unplug it :Giggle

2) potentially for a before and after comparison

apologies for receipt hanging under amp - more laziness from myself you can see to remove it.

"Photo

"Photo

"Photo

and the sub specs going in are;


Speaker Size  12" (323mm)
Mounting Depth
 138mm
Mounting Diameter 285mm

All to you interlopper
Title: Can you get a premade 12" sub box into a rx7?
Post by: interloper393 on March 29, 2007, 10:34:38 PM
ok.. i played about today with a few idears, not knowing the depth of the sub it was kinda hard, id say with tho`s sizes your best bet is to remove the amp and have your speaker there.. a 12" speaker sits kinda weird as the only other place it cn go is the left side  just before the jack, like archbish.
Title: Can you get a premade 12" sub box into a rx7?
Post by: dreamers on March 29, 2007, 10:49:25 PM
worried about leaving holes everywhere if i remove it. Its hard to visualise what your idea is without seeing it. Anyhow we still have no price from interlopper :)

Assuming it goes in centre and I remove amp (not sure where i\'d put it but hey!). Let me know..
Title: Can you get a premade 12" sub box into a rx7?
Post by: interloper393 on March 29, 2007, 10:52:11 PM
i was thinking a back build so it would cover the whole back seat but blend into the sides also, with your huge sub in the middle, always the option to cut a few more holes for smaller speakers if you wanted..
Title: Can you get a premade 12" sub box into a rx7?
Post by: dreamers on March 29, 2007, 10:59:54 PM
sounds good - where would amp sit? And at what £$? ;)

When you say cover back seat you mean so i am rear seatless?
Title: Can you get a premade 12" sub box into a rx7?
Post by: interloper393 on March 29, 2007, 11:12:18 PM
sits where your amp in the noo, facing the rear window bud, i reckon around 80-100 for the finished item, alot of work involved but will look ace :)
Title: Can you get a premade 12" sub box into a rx7?
Post by: dreamers on March 29, 2007, 11:20:59 PM
sounds good - email me at
*removed* and we can discuss.

We can post pics of finished item here when done
Title: Can you get a premade 12" sub box into a rx7?
Post by: interloper393 on March 29, 2007, 11:26:55 PM
no probs, i`ll get the materials tomoz n start..have a gauge pod to finish for a friend, but shouldnt take long lol..
Title: Can you get a premade 12" sub box into a rx7?
Post by: dreamers on March 29, 2007, 11:28:14 PM
takin my email off in a mo - dont like it being public - i aint no pansy girl u kno - long story behind that email .. too long - lol
Title: Can you get a premade 12" sub box into a rx7?
Post by: dreamers on March 29, 2007, 11:35:01 PM
BY the way if you can make it fit under parcel shelf that\'d be great.
Title: Can you get a premade 12" sub box into a rx7?
Post by: interloper393 on March 30, 2007, 01:35:07 PM
ok m8 have a better idear for you, it you want to keep the parcel shelf, how about i make a mould of the parcel shelf, flush the top, and bond in a curved speaker surround aiming at a angle out the rear window/or front.. this way you cn see your speaker from outside the car :) reckon this will be far better for ya bud.. with the boot shut and the shelf down, not alot of room.. let me know n throw a few idears up for ya..
Title: Can you get a premade 12" sub box into a rx7?
Post by: trotter on March 30, 2007, 04:31:57 PM
I like these threads...lets me put in my 2p on a subject i know for once :)

The best way to get power into the boot is to find one of the existing grommets that gives access to the engine bay through the firewall  - not usually a good idea to drill your own!! After that get some heavy duty cable (u can calculate what specs you need from tables on the net) and an in-line fuse. Put the fuse as close to the battery as possible, then feed the cable through the firewall, under the interior trim and into the boot - -hey presto...VE HAFF POWER! lol
Title: Can you get a premade 12" sub box into a rx7?
Post by: shaunwil on March 30, 2007, 05:29:14 PM
The best grommit for the job is the one thats behind the innner wheel arch, its nice and big :D

An average sub amp usually needs about 4AWG Cable too.

Shaun
Title: Can you get a premade 12" sub box into a rx7?
Post by: interloper393 on March 30, 2007, 06:21:34 PM
very ruff but along these lines bud, the full thing, will be fiberglass and the speaker will be blended in,.. quite smart with the cannon that you hav lol
Title: Can you get a premade 12" sub box into a rx7?
Post by: dreamers on March 30, 2007, 07:39:49 PM
my only worry is theives thats all. :confused:
Title: Can you get a premade 12" sub box into a rx7?
Post by: interloper393 on March 30, 2007, 08:04:04 PM
take that risk with anything tho lol..
Title: Can you get a premade 12" sub box into a rx7?
Post by: dreamers on March 30, 2007, 08:25:17 PM
true but that is advertising a sub with a flash install to theives. I have had bad luck in the past with car theft so not prepared to risk it - Let me think about it,..unless you come up with another idea :)
Title: Can you get a premade 12" sub box into a rx7?
Post by: dreamers on March 30, 2007, 08:33:19 PM
Quote from: trotterI like these threads...lets me put in my 2p on a subject i know for once :)

The best way to get power into the boot is to find one of the existing grommets that gives access to the engine bay through the firewall  - not usually a good idea to drill your own!! After that get some heavy duty cable (u can calculate what specs you need from tables on the net) and an in-line fuse. Put the fuse as close to the battery as possible, then feed the cable through the firewall, under the interior trim and into the boot - -hey presto...VE HAFF POWER! lol

Yup  I aready have cabling and stuff all done - just need a box/enclosure for sub speaker I am inkling to put in.
Title: Can you get a premade 12" sub box into a rx7?
Post by: interloper393 on March 30, 2007, 08:55:42 PM
no probs.. i`ll have another looky n see if theres any other way, dont think there is tho lol
Title: Can you get a premade 12" sub box into a rx7?
Post by: brunge on April 13, 2007, 10:31:01 PM
i dont know if im too late joining in here but i may have another idea for you. i will post some pics of my install tomorrow.

i wanted to have the best of both worlds- showing off and stealth! un-usual combination i know but it works very well.

i have a 12" sub housed in custom box designed and built to correct volume
to fit under the height of the parcel shelf (not an easy task believe me!) with the amp fixed to the box.

Stealth -
Allows for original shelf to be fitted for everyday use and to keep thieving chavs at bay!

Showing off -
i then costructed a two piece cover for the entire boot. these sit on top of the box, the top section surrounds the sub which is the same shape as the parcel shelf raised section. the lower piece covers the remaining boot area. i covered these with black vinyl material over foam padding to match the rear seat upholstery. And I still have room underneath for crap!

Pics tomoz asap then it will become a bit clearer! :Thumbsup!

brunge.
Title: Can you get a premade 12" sub box into a rx7?
Post by: brunge on April 14, 2007, 04:12:35 PM
here you go...

check out my oldskool Legacy Amp! :Thumbs-up
Title: Can you get a premade 12" sub box into a rx7?
Post by: dreamers on April 17, 2007, 09:54:53 PM
It\'s nice but needs a custom box.

GOOD news is pioneer now make a flat 12" SUBWOOFER for flat/shallow boots! RARE but awesome.  Good brand and looks/sounds the bUsInEsS - pricey though and rare. pioneer TS-SW3041D <- check them out! they do come in a pioneer enclosed box too but its v.v.v hard to come by.