View Full Version : How good are these?
I have a Maystar MX4500 500watt (125w each) 4channel amp!
But I have my eye on a pair of Longmill 500watt 10' subs in a Perspex frontal box and a pair of VDO 400watt 6'x9' speakers, are these any good?
And how will I wire all this to the amp?
cheerz!
to wire this 2 the amp just take a cable from each speaker \ sub to each channel so both + of the subs to 2 of the posistive on th amp same with the - personally i wudnt amp ur the 6x9's id run off ur head unit that way ull have more power drivin ur subs
i think the head unit is 40/45watts, will these power 400watts?
can anyone help me or have i backed myself into an impossible corner?
Best bet would be to just run the subs from the amp and the 6x9's from the headunit as, if it's true, the headunit seems to have a reasonable power output so it should power the 6x9's quite well.
Is the amp bridgeable? I.E can you bridge channels 1&2 to run one sub and also channels 3&4 to run the other? If you can then that's how I'd do it. Bridge 'both' channels and run a sub off each with the 6x9's off the headunit.
(I won't go into how you shouldn't have 6x9's and subs as that's just my opinion!!!)
:oops:
Oh and don't forget to switch the low pass filter (LP filter / sub filter) on the channels that you do run the subs off, If the amp doesn't have and LP filters then you'll need a crossover for the subs, a couple of cheapy passive ones should do the trick.
Is the amp bridgeable? I.E can you bridge channels 1&2 to run one sub and also channels 3&4 to run the other? If you can then that's how I'd do it. Bridge 'both' channels and run a sub off each with the 6x9's off the headunit. (I won't go into how you shouldn't have 6x9's and subs as that's just my opinion!!!)
it is bridgeable, ive been told i can bridge it!
sub1 = + ch1 and - ch2
sub2 = + ch3 and - ch4
dont understand this, but what i odnt understand is why i cant use jus tthe one channel for each sub and each speaker?
and why cant i use
- ch1 and + ch2 for one 6x9 and
- ch3 and + ch4 for the other?
will the head unit power 400watts? and how will it?
i want to keep this as simple as possible! head unit, 6x9s, amp and subs!
Oh and don't forget to switch the low pass filter (LP filter / sub filter) on the channels that you do run the subs off, If the amp doesn't have and LP filters then you'll need a crossover for the subs, a couple of cheapy passive ones should do the trick
erm, sorry? lol whats a crossover? its got a load of buttons and knobs on it i dont understand, i might have to try and get a pic of it on here if ne cant be found! ai dont understand it at all, as long as i can pop my own ear drums, i dont care how its wired, lol!
it is bridgeable, ive been told i can bridge it!
sub1 = + ch1 and - ch2
sub2 = + ch3 and - ch4
dont understand this, but what i odnt understand is why i cant use jus tthe one channel for each sub and each speaker?
Easy to understand, you take the + connection from ch1 to the + connection to one sub, you then take the - connection from ch2 to the - connection of that sub. Do the same with ch 3&4 and you'll have bridged all 4 channels into 2 higher powered ones for the subs.
It basically turn 4 lowered powered channels into 2 higher powered ones.
You could use one channel for each speaker. I.E Ch 1 for a 6x9, Ch2 for the other 6x9, Ch3 for the first sub and Ch4 for the second sub - but then you're subs won't be as loud as the way I've suggested as they won't be getting as much power. You could also bridge all 4 channels down to 2 and run a sub and 6x9 off both channels but this would sound $hite as the subs would be getting the same sounds as the 6x9s including all the high pitched stuff which would sound awful!!
and why cant i use
- ch1 and + ch2 for one 6x9 and
- ch3 and + ch4 for the other?
You can but then what's going to power your 2 subs?
will the head unit power 400watts? and how will it?
I assume you mean that the 6x9's are rated at 400watts? If so then that figure is a 'peak power' figure, also know as a bullsh*t figure, basically the 6x9's could only put up with 400watts (RMS - more on that later) for a split second before they blow, companys like to quote peak power figures as it makes there amps / speakers look better than what they really are, the figure you should be interested in is the 'RMS' figure, RMS stands for 'Root Mean Squared' (I think) but most people like to call it 'Real Music Sound' because that is the real nominal output / limit that the amp / speakers can deliver, now if you're comparing two amps and one has a output of 4 x 400 peak and the other has 4 x 30 RMS the 4x 30 RMS amp will be louder and of better quality. My Infinity amp 'only' has an output of 2x40 RMS but it can go bloody loud!!!
So yes, your headunit should have no problems at all in running the 6x9s straight from the rear speaker connections.
i want to keep this as simple as possible! head unit, 6x9s, amp and subs!
Well tbh it does seem quite simple to me, but if you're not sure then take it to someone who knows what they are doing!!!!
Oh and don't forget to switch the low pass filter (LP filter / sub filter) on the channels that you do run the subs off, If the amp doesn't have and LP filters then you'll need a crossover for the subs, a couple of cheapy passive ones should do the trick
erm, sorry? lol whats a crossover? its got a load of buttons and knobs on it i dont understand, i might have to try and get a pic of it on here if ne cant be found! ai dont understand it at all, as long as i can pop my own ear drums, i dont care how its wired, lol!
LOL - A crossover is like a filter, it'll make sure that your subs only get the right frequency signals (sound). I.E the low bassy sounds that you expect from a sub and not the high pitched sounds (mid and tweeter) that the rest of the speakers in you car will provide. You can get two types of crossover, passive and active, Simply put Passive crossovers use a pre-set frequency cut off point where as the Active ones are adjustable but if you've got an amp with filters then you won't need any crossovers.
Most amps that are bridgeable will have some switches on the side (normally one for each bridgeable channel) that have 'low pass' and 'high pass' filters on. What these do is basically the same as what crossovers do like I explained above, they filter out certain sounds to that bridged channel. So for example if you want to run a sub from bridged channels 1&2 you'd set that switch to 'LP' (Low Pass so it allows only low frequencys (sounds) to go to that channel) but if you wanted to run a set of mids and tweeters off the other bridgeable channel then you'd set that one to 'HP' (High pass so it'd allow the high frequencys through and block the low ones). You can leave the filters switched 'off' and it'd allow all frequency ranges through - this would be ideal if you were connecting your 6x9's to the bridged channels, but for your setup you'd need to set both switches to 'LP'.
Hope that's not too confusing, best idea would be to get your amp infront of you, read through this message step by step and you'll soon be able to work it out.
cheerz Jules, i understand it alot better now an i understand what you mean!
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