New install

In car entertainment: stereo; speakers; portable devices etc

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G Beats
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Re: New install

Post by G Beats » Mon Feb 28, 2011 12:34 am

This is what i meant as last result.

Junglist wrote:Yeah I've used it myself once or twice but best saved as a last resort. Best of luck with the amp. Wish I could tell you how to suss if it's knackered or not. If it were me, I'd open it up and look for a burnt out component. If there's a smell comong off the circuit board when you open it, something's definitely gone.


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Mr Funk
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Re: New install

Post by Mr Funk » Tue Mar 01, 2011 8:23 pm

Was down at the installers today going over a few things and what came up in conversation was a seperate 10cm component! Whats the point of this?
Well, the problem before was that the woofer wouldn't fit in the pocket but the 10cm unit would fit with only very slight modifying. The long and short of this is that it'll make installing superb components and damn sight easier.
Can't believe I didn't go down that route before


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Beddo88
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Re: New install

Post by Beddo88 » Wed Mar 02, 2011 12:33 am

10cm component? Would that supply deent enough mid-range though? I suppose you could twin it with some larger mid-range speakers hidden in the rear? Would make installing a dam sight easier. Still waiting to hear back about my amp. in the mean time been bdiding on a couple more on ebay... :) I just want to start work on it now!!


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Jay4424
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Re: New install

Post by Jay4424 » Wed Mar 02, 2011 1:02 am

What ever you do, what ever sub you get, and what ever box you putit in, fill the box with fiberglass or similar first.

I just finished my new sub box (like fonzoooroo's) and filled it before putting the speaker in and bolting to the car.

The cabinet is quite small, especially for a 12 ...I'll re measure later! But it has a huge response curve, it's abostolutly brillant!


Just my two cents :hugegrin:
Last edited by Jay4424 on Thu Mar 03, 2011 12:49 pm, edited 1 time in total.


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Mr Funk
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Re: New install

Post by Mr Funk » Wed Mar 02, 2011 8:21 am

I'm off next week so we're going to spend a little time just mucking about with speakers to see what we get. I was looking at the Focals which are a bit on the pricey side but you get crystal clear sound which I'm happy to pay for.


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fonzooorooo
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Re: New install

Post by fonzooorooo » Thu Mar 03, 2011 10:39 am

Jay4424 wrote:What ever you do, what ever sub you get, and what ever box you putit in, fill the box with fiberglass or similar first.

I just finished my new sub box (like fonzoooroo's) and filled it before putting the speaker in and bolting to the car.

The cabinet is quite small, especially for a 15"? ...I'll re measure later! But it has a huge response curve, it's abostolutly brillant!


Just my two cents :hugegrin:

Filling the box with wadding is only necessary if the box is too small to achieve the response curve you are after.
It gives the equivalent of an extra 10% of internal volume.

Jay, have you really used the 15"? or is that a typo?



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Jay4424
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Re: New install

Post by Jay4424 » Thu Mar 03, 2011 12:48 pm

fonzooorooo wrote:
Jay4424 wrote:What ever you do, what ever sub you get, and what ever box you putit in, fill the box with fiberglass or similar first.

I just finished my new sub box (like fonzoooroo's) and filled it before putting the speaker in and bolting to the car.

The cabinet is quite small, especially for a 15"? ...I'll re measure later! But it has a huge response curve, it's abostolutly brillant!


Just my two cents :hugegrin:

Filling the box with wadding is only necessary if the box is too small to achieve the response curve you are after.
It gives the equivalent of an extra 10% of internal volume.

Jay, have you really used the 15"? or is that a typo?

yep, typo!

surly even if the box is the correct size the waddign acn only help? or does it become detremental?


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GT2 trailer (with the Fon-zooroo!!!)
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Junglist
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Re: New install

Post by Junglist » Thu Mar 03, 2011 2:01 pm

Becomes detremental. Too big AND too small is bad. There's an optimum size for every driver.


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Beddo88
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Re: New install

Post by Beddo88 » Thu Mar 03, 2011 2:37 pm

Haha so what we're saying here, essentially, is try it without anything, then try adding some stuff.

These would both be lovely options if i had the damn amp to power the thing. Still havent heard back from ebay man :(

(Maybe i should install the 'fear of negative feedback' in him?)


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Junglist
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Re: New install

Post by Junglist » Thu Mar 03, 2011 7:33 pm

Contact him directly and at his paypal email address and through ebay and if you get nowt, report it to both ebay and paypal. I had this once and if they ignore every contact from you ebay and paypal, you get the refund in full. You may have to send it back and show proof though. I also did that once and ended up with no item and no refund! Be careful. Maybe send an empty parcel to him so you've got proof of postage but you've still got the item. That's the only way to guarantee not getting screwed.


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fonzooorooo
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Re: New install

Post by fonzooorooo » Thu Mar 03, 2011 8:08 pm

Jay4424 wrote:
fonzooorooo wrote:
Jay4424 wrote:What ever you do, what ever sub you get, and what ever box you putit in, fill the box with fiberglass or similar first.

I just finished my new sub box (like fonzoooroo's) and filled it before putting the speaker in and bolting to the car.

The cabinet is quite small, especially for a 15"? ...I'll re measure later! But it has a huge response curve, it's abostolutly brillant!


Just my two cents :hugegrin:

Filling the box with wadding is only necessary if the box is too small to achieve the response curve you are after.
It gives the equivalent of an extra 10% of internal volume.

Jay, have you really used the 15"? or is that a typo?

yep, typo!

surly even if the box is the correct size the waddign acn only help? or does it become detremental?
Car subs typically rely on the air loading of the box to assist the suspension. (In fact all drivers except "free air" ones do...) so if a box is the "right" size (itself always a compromise between frequency response and efficiency) the effect of adding wadding will decrease efficiency, reduce air loading for the driver, (increasing the possibility of the driver suffering from over-excursion... the ultimate situation there is for the voive coil to hit the back plate, and it then distorts forever more!)
This is why typical off-the-shelf boxes are usually too small... upshot of that is that efficiency and safety for the driver are improved, with uneven frequency reponse being the trade-off.



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Beddo88
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Re: New install

Post by Beddo88 » Thu Mar 03, 2011 9:01 pm

Ok.. just sent him an Email to his aol email addy and to his ebay account. How do I send something through paypal? Or do i have to raise an issue?

Obviously i'd rather not chase down this route but i'd rather be prepared.

On a plus note... going to Munich on Monday :D First 'business trip' ever.. getting excited :D


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Beddo88
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Re: New install

Post by Beddo88 » Thu Mar 03, 2011 9:04 pm

Car subs typically rely on the air loading of the box to assist the suspension. (In fact all drivers except "free air" ones do...) so if a box is the "right" size (itself always a compromise between frequency response and efficiency) the effect of adding wadding will decrease efficiency, reduce air loading for the driver, (increasing the possibility of the driver suffering from over-excursion... the ultimate situation there is for the voive coil to hit the back plate, and it then distorts forever more!)
This is why typical off-the-shelf boxes are usually too small... upshot of that is that efficiency and safety for the driver are improved, with uneven frequency reponse being the trade-off.
I just want some bass.... :( lol


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Beddo88
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Re: New install

Post by Beddo88 » Fri Mar 04, 2011 3:46 pm

RESULT!!

Sent him an email and a message on ebay yesterday, checked it again in the evening and i've got a full refund :)

£40 for the amp, £12 for the postage i originally paid, and ANOTHER £10 to cover the cost of me posting it back to him. Guess there are good people out there afterall!

Back to the hunt..


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Beddo88
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Re: New install

Post by Beddo88 » Sat Mar 19, 2011 7:39 pm

So... i've finally got a sub working in my car!! Borrowed a makeshift amp to test that the wiring works, and chap doesnt want it anymore so i've got one for the time being :) Must say it does go rather loud... still trying to get the right mix between bass and the rest. Doesnt help that both 6x4s are sat in the rear.

There is quite an obvious gap between the sub kicking in and the lows produced by the 6x4s though, something hopefully a set of components and a decent LPF/HPF on an amp should resolve. Really need to re-wire my front speakers too, so i can move the sound stage back to where it should be.


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