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General => Car audio => Topic started by: navmk4gti on 10 October 2013, 13:26

Title: some amplifier advice
Post by: navmk4gti on 10 October 2013, 13:26
Im looking at connecting my 6x9's and front and rear door speakers to an amp. Do i need a 6 channel amp so each speaker has its own channel to get the best out of them or would a 4 channel amp with 6x9 on its own channel and the speakers bridged do the job.

 :smiley:
Title: Re: some amplifier advice
Post by: dragonfly on 10 October 2013, 14:27
4 speakers - 4 channels. Unless at some stage you want to run a sub.
Title: Re: some amplifier advice
Post by: navmk4gti on 10 October 2013, 14:34
There is 6 speakers tho mate inc the 6x9s :wink:
Title: Re: some amplifier advice
Post by: dragonfly on 10 October 2013, 15:19
Are you including tweeters?
Title: Re: some amplifier advice
Post by: navmk4gti on 10 October 2013, 15:27
Nope. Iv already changed the speakers in the front doors and rear quarter and have 6x9 in the shelf.so 6 speakers in total that i want running of an amp
Title: Re: some amplifier advice
Post by: sharki786 on 10 October 2013, 15:30
What 6x9's you got bro? Also what are the door speakers? You want 6 channel amp for best sound.
Title: Re: some amplifier advice
Post by: navmk4gti on 10 October 2013, 15:51
Got vibe slick 6x9'S and alpine door speakers. I thought so would need 6 channel ..der a b1tch to find a decent 6 channel one. I have a 4 channel v12 alpine amp was thinking do some bridgeing but the speakers may sound crap then
Title: Re: some amplifier advice
Post by: dragonfly on 10 October 2013, 15:56
You have 4 outputs on the headunit so how have you connected 6 speakers to it? The sound will be very rear heavy. Either run the fronts and 6x9s, fronts and rears or fronts and a sub.
Title: Re: some amplifier advice
Post by: navmk4gti on 10 October 2013, 16:36
You have 4 outputs on the headunit so how have you connected 6 speakers to it? The sound will be very rear heavy. Either run the fronts and 6x9s, fronts and rears or fronts and a sub.

6x9 are currently bridged to the rear speakers. Im.not going to have a sub.

So if i run the 6x9 and front speakers to the amp
 And leave the rear door speakers to the headunit it should run good?

Yep at the mo the sound is very heavy :lipsrsealed: :grin:
Title: Re: some amplifier advice
Post by: dragonfly on 10 October 2013, 19:54
You can't simply 'bridge' speaker wire to run another set of speakers. When you go to a concert do you have your back to the stage?  This is why it is better to invest in a decent component set-up at the from and a sub in the boot.  You then cover the frequency range (tops, mids and lows).
Connect the fronts and the 6x9s, leave the rears. Daisy chaining the speakers will sound rubbish.
Title: Re: some amplifier advice
Post by: navmk4gti on 10 October 2013, 20:59
Yes i know hence why im going to amp them all up. Im not getting a sub as dont want that much crazy bass.

Ill wire the 6x9 and front speakers to a 4 channel amp and leave the rear speakers as they are.
Title: Re: some amplifier advice
Post by: dragonfly on 10 October 2013, 21:04
It's a good start and will sound better than what you have.  Take your time wiring it up and don't botch anything otherwise you can cause shorts and further damage.
Title: Re: some amplifier advice
Post by: navmk4gti on 10 October 2013, 21:16
Yup will do thanks for the advice  :smiley:
Title: Re: some amplifier advice
Post by: Len on 14 October 2013, 12:42
6x9's in rear shelf are rubbish mate! Ditch em and just amp the door speakers.
Title: Re: some amplifier advice
Post by: navmk4gti on 22 October 2013, 19:34
Yup i am now going do ditch the 6x9s now after little research :grin:

I av got small 8" subwoofer sony xplod 200w which i will be making a stealth box for.

I have a 4 channel amplifier and just had a quick question. Should the wiring be a set of speakers on chanel 1 and 2. And the subwoofer bridged on 3 and 4?? :undecided:

Also which channel have the hpf lpf stuff switched on for?
Title: Re: some amplifier advice
Post by: dragonfly on 22 October 2013, 19:59
Assuming the amp is bridgeable then yes use channels 1 and 2 for the front speakers and bridge 3 and 4 for the sub.  Put the HPF/LPF to LPF or off.
Title: Re: some amplifier advice
Post by: navmk4gti on 22 October 2013, 20:07
Yup its bridgable. Do i not set lpf for the subwoofer channels. The speaker channels wi be on off. Never wired up subwoofer before :grin: i heard channels for sub needs to be hpf or lpf one of them
Title: Re: some amplifier advice
Post by: sharki786 on 23 October 2013, 07:12
Assuming the amp is bridgeable then yes use channels 1 and 2 for the front speakers and bridge 3 and 4 for the sub.  Put the HPF/LPF to LPF or off.
What is hpf & lpf all about?
Title: Re: some amplifier advice
Post by: dragonfly on 23 October 2013, 08:52
Yes as above set your HPF/LPF to 'LFP'. Don't forget to set your crossovers.
Title: Re: some amplifier advice
Post by: navmk4gti on 23 October 2013, 09:06
LPF stands for low pass filter, which i think is treble cut filter. HPF stands for high pass filter which is a bass cut filter.

So ill set the sub channels to lpf to cut out the treble to it. :smiley:
Title: Re: some amplifier advice
Post by: navmk4gti on 03 November 2013, 18:13
I have put a sub in and it is also playing all other sounds :angry: i have set the channel it is on to mono and set lpf but still plays all sounds. Need some help is it the amp maybe? As it is a 4 channel amp but has subwoofer settings too
Title: Re: some amplifier advice
Post by: sharki786 on 06 November 2013, 17:49
The amp you have put in, i take it as you have wired the door speakers to it?
Title: Re: some amplifier advice
Post by: navmk4gti on 06 November 2013, 17:51
Iv ditched the 4 channel amp now.had only the sub on it for now.

got a 2 channel amp and that is running the sub fine :smiley:

Title: Re: some amplifier advice
Post by: sharki786 on 06 November 2013, 20:29
Was going to say. Also how many amp pre outs does your head unit have? If it has more then 1 then you need to connect to the subwoofer pre out.
Title: Re: some amplifier advice
Post by: navmk4gti on 06 November 2013, 20:30
Headunit has 2. One says rear one says front. Im using the rear ones :undecided:

still aint fitted bora vents too bro haha :grin:
Title: Re: some amplifier advice
Post by: sharki786 on 06 November 2013, 20:42
Ye i would do the same.
Hahah serious?  :grin:
Thought you would have by now.
I just recieved my parcel from dom (projector head lights) just need to check them over just to make sure (i do trust him)
I got loads of parts to fit to my mk4 gti. I got the hella magic smoked/black rear lights, 4mo rear valance, head lights, tip & leather arm rest. Looking forward to it aswel lolsss
I fitted my bora vents a few days later, fitted my clarion screen a few weeks after recieving it and ended up watching tron for an hour lol. Oh i got to sand 1 net optic handle as i carbon wraped the others lols. So quiet abit to do yet lolss
Title: Re: some amplifier advice
Post by: navmk4gti on 07 November 2013, 00:32
Ah you got them lights i was keepin eye on them  :grin:

Im gonna get the vents in this weekend when fit the 20cm front door speakers in  :cool:
Title: Re: some amplifier advice
Post by: sharki786 on 07 November 2013, 00:47
20cm? Aint that bit big? Sound on the standard speakers are pretty good a d bassy. What speakers you got?
Ye i had to buy them just had a look and they look pretty good. Sorry bro lol
Title: Re: some amplifier advice
Post by: Bred S on 27 November 2013, 20:27
you can check new ones in the net,
Title: Re: some amplifier advice
Post by: Mr Blue on 29 November 2013, 15:14
Ok so you mean interference through the subwoofer when you play music?

Does this noise match the engine revs?


or does it play mid and highs through the sub? - need to tweek the settings.
Title: Re: some amplifier advice
Post by: navmk4gti on 29 November 2013, 17:09
No mate im aware of that sort of inteference it wernt that. I managed to pin point it to the LPF hz settings. I have tweaked with them a bit and get bass only through the subwoofer now. Having high HZ set on lpf seems to throw all the sounds through the sub

Learn something new everyday :grin: