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True, simply connecting a sub to a head unit would indeed be like fitting a big speaker playing a full range signal, (which could damage a subs coils due to higher transient---insert techno babble that I don't like----), but, most head units now come with in-built crossovers, some even have...

:lolup::cheers::lolup:

That was done by a European champion, who has forgotten more than most will ever know....

Just read this post back and I feel the highlighted sentence requires a little broader explanation..... As the panel resonates, (moves to and fro), along the same axis as the speaker, the speakers position itself alters in relation to its initial starting point.....Wow that sounds like its...

An interesting point; Lets say you purchase a typical sub/amp package deal, lets say the amp is rated at 300watts rms at 14.4v..... You fit this in your car and set it up accordingly..... At max volume whilst playing music your amp will most likely produce around 50% output power, so in...

With regards 'Foam Padding' This is used to achieve an air tight seal and offer some dampening.... With regards 'MDF' baffles These are used to offer a 'dead' mounting surface, some form of gasket should also be used to guarantee an air tight seal, both between the MDF and speaker & MDF and...

PLEASE READ Need a little more info mate; 1, make & model of sub for a start....

Will watch this space with interest then..... Only had car 8 days and your already fitting extras, normally takes me 6 months to decide if I can be bothered lol.....

Logical steps to follow; 1, Have batt & alt checked 2, If both OK, charge battery off the car 3, If not fitted yet ADD new batt to chassis earth to match new power cable 4, Check main engine to chassis earth strap, (Check connections are clean & tight).... Doing the above should rectify your...

Those Focal mids would respond well to a well deadened & sealed door, MDF baffles and a nice amp to wake them up.... Just my opinion of course.... Enjoyed reading your post, very informative....

Sounds to me like you have a charge circuit issue..... As the bass hits, the amp draws current from the battery/alt, if either one can't maintain or support the demand poor running will result..... Likely causes & remedies; 1, battery depleted/knackered----recharge/replace battery 2, Weak...

Thankyou....I do believe we are both now on the same page..... Always a pleasure chatting with you.....:cheers:

No, he's simply getting mixed up.....no, thats unfair....I'm failing to explain my point so he can understand it....

Tell you what, draw me a horizontal line depicting output rms voltage from your JL 1000/1 at full volume playing a sine wave... Lets say 1" in length = 10seconds..... Now draw me another horizontal line depicting output rms voltage from your JL 1000/1 at full volume playing music... Again, 1"...

Bullet holes are an expensive repair though;):rofl:

The flat line represents the percieved volume level of a sine wave, as in it maintains output or a given voltage across the amps output terminals.... If you play a 0dB 50hz sine wave at full volume through an amp and take a voltage reading off the output terminals the voltage will remain...

I'm cocky & arrogant, OK your entitled to your opinion..... POWER CABLE THREAD read my first post in this thread and point out to me where I recommended 0awg for a single amp???? My response is post 11, maybe a little cocky, maybe a little arrogant.... Then my mate Mr Dink, AMP HELP...

Going to try one more time;

You've already had a pic and went off on one about it not representing a SINE WAVE..... So, I'm wrong, it's not fair to depict a recording level using a straight horizontal line..... A continuous tone recorded at 0dB being played at a given volume should not be represented as a straight...

Would it be fair to represent the recording level, (0dB), of a SINE WAVE as a straight horizontal line.....

But a sine wave has peaks and troughs, or are you agreeing the sine wave is a continuous level.....ie 0dB....

Hello DC, How you doing today..... Try to understand it is an ANALOGY.....to put over a point in basic terms.... I've not drawn a SINE WAVE..... A BASIC explanation why amplifiers playing music will not attain full output.... You don't agree obviously..... Would you answer this for me...

Don't know why they contest, don't really care till I'm proven wrong, (Been playing with car audio for a few years now), total failures to date, just 1, input stage on my 4ch amp failed a few weeks back.....but I was running it hard.... There are a number of factors which affect an amplifiers...

I've never tried deadening an enclosure before, I usually opt for bracing & wadding..... I use B&Q loft insulation, (the one thats lighter in colour, yellow more than orange), its easy to do, simply cut one piece the same size as the largest face of the enclosure.....place this inside the...

This BASIC formula was to cover all the bases, if you wish to be exact in your working out then lets play.... By using the quoted method your avoiding issues like impedance, source material rec levels, and such, your simply fitting a cable which will supply enough current over a given length...

What is it with you & DC???? If you don't grasp the analogy then say so..... Just for you; As in constant output with no fluctuation, no increase or decrease in output volume, a straight horizontal imaginary line..... So, bass hits, output increases to a peak, no bass, output dips, no...

BASIC POWER SUPPLY INFO There are two basic parameters used when working out which size cable you require; 1, The SAFETY angle, (bare minimum)... 2, The PERFORMANCE angle, (limits voltage drop)... I would always recommend you follow the PERFORMANCE angle, this covers SAFETY and limits voltage...

ok, over the last few weeks i have seen a number of cars that have split charged boot batteries. the vast majority,(in fact all but one), have been wired correctly but with woefully inadequate cabling/fusing. apparently, the main culprit seems to be the,"over the counter split charge kit"...

a few basic facts regarding OHM'S LAW the ohm is a measure of impedence, this can become confusing so i will keep it basic. if an amp is producing 50watts rms into 4ohm's, it will produce 100watts rms into 2ohm's, so if you halve the impedence,(ohm's), the output doubles. the same amp at...

lets cover basic amp setting up by ear. ok, going to assume i'm setting up a system comprising off; a 4ch amp driving front speakers off the front ch's and a sub bridged off the rear ch's. basic settings to start with; headunit; bass---at "0" treble---at"0" any factory preset eq's---off...