GolfGTIforum.co.uk
General => Car audio => Topic started by: Original_Brett on 19 October 2010, 17:33
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Hey Guys.
I have a golf mk3 gti and i have got a Xtrons head unit and ive split the back to speakers to run into the back of the car which has 2 JBL GT5's in. What amplifier would run them to subs? im lookin around 2000w right? and also i might be adding some tray speakers in after? could someone tell me a good amp please? :D Thankyou!!
Brett
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Ignore the glorified wattage figure, RMS is what you at looking at which for that sub is a lot less. What's you budget for the amp? Number of channels? What are tray speakers?
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gt5s will be around 250wrms each. Should be Single 4ohm voice coil config so ideally to be safe 500wrms mono at 2ohm will see you nice.
Although I have mates putting 500wrms into gt5s and playing hard all day long without problems. As long as you don't clip them you should be fine.
Ampwise look for a 2ch which does 500w ish bridged at 2ohm or a mono which does 500w ish at 2ohm. Simples
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What are tray speakers?
I meant the speakers on the back tray (Above the boot)
The budget is about £250 at highest for the amp :) i already have to gt5's in a box just need a decent amp :D could you link me to one atall on eBay or something, oh and 4 channels if possible!
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you mean 6x9's?
if so, dont mount 6x9s in parcel shelf.
1. whats the point in upgrading the sound quality in the boot (subs are put in boot because there isnt really anywere else you can put them and also the soundwave they give out is not as directional (i do belive but im willing to be corrected if wrong))
2. look at the speekers in the door, they are mounted onto metal for a reason, so that they dont bounce around ect. parcel shelf isnt strong enough to give it a good solid positioning
3. 6x9s dont give as good sound quality as normal component speekers.
if your going to mount speekers on the parcel shelf buy a stelth shelf
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you mean 6x9's?
if so, dont mount 6x9s in parcel shelf.
1. whats the point in upgrading the sound quality in the boot (subs are put in boot because there isnt really anywere else you can put them and also the soundwave they give out is not as directional (i do belive but im willing to be corrected if wrong))
2. look at the speekers in the door, they are mounted onto metal for a reason, so that they dont bounce around ect. parcel shelf isnt strong enough to give it a good solid positioning
3. 6x9s dont give as good sound quality as normal component speekers.
if your going to mount speekers on the parcel shelf buy a stelth shelf
im probly not gonna get 6x9 but if i do i will deffo get a better shelf :p thanks for thatt :)
Could anyone link me to a decent amp for the 2 jbl gt5's ?? Thanksss x
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If you've got subs in the boot it's a waste of time putting 6x9s on the shelf unless you put them in separate enclosures.
Why do you want a 4ch to power to subs?
You ideally want a mono amp.
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so i need a 2000w mono amp then? :)
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No. You need around a 500wrms ish amp at 2ohm.
2000w is far too much to be running daily. If you were burping maybe but I wouldn't in this instance.
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No. You need around a 500wrms ish amp at 2ohm.
2000w is far too much to be running daily. If you were burping maybe but I wouldn't in this instance.
could you link me to a decent one that would run 2 JBL GT5's ?? Sorry to be a pain!
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Although I have mates putting 500wrms into gt5s and playing hard all day long without problems. As long as you don't clip them you should be fine.
have they re-coned them?
have a look at
http://www.bassjunkies.com/audio/t1-audio-ls500-2
or
http://www.bassjunkies.com/audio/kenwood-kac-6104d
what amp wiring kit you using?
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No why?
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to be putting double the rms through the sub, i just assumed they re-coned them like a mate of mine has, who is running 4x gt5s
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Only need to re-cone if you fry it or want to change impedance.
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ye, you delibrately blow them so you can re-cone them, by doing this you improve them so you can push more power through them, can only be done with jbl's as well apparently
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Never heard of that?
Also don't see the point of re-coning a £50 sub. If I blew my 18" I'd see the point as it's expensive. But a GT5, just buy a new one!
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does anyone know what amp will run these 2 GT5's so they both go about 500w each at the highest? i really don't understand the whole Ohms and independance haha. Thanks for the help though guys! really appreciate it!!
EDIT: Would i be able to get a decent amp that could have 1000w RMS? 2 run both of the subs? there both suppose to go about 1000w each but if i get a 2 channel amp would it run them both smooth?
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They're not 1000w each. 275w rms 4ohm svc. Ignore peak.
http://caraudiosecurity.com/shop/product/products_id/7135.html
A jbl gto 7001 will run them lovely.
http://caraudiosecurity.com/shop/product/products_id/8040.html
The T1 amp tazzy linked wouldn't work with your two subs. Wrong impedance and I think the kenwood power is peak so prob only 300w x1 @ 2ohm so not powerful enough to do the gt5s justice.
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They're not 1000w each. 275w rms 4ohm svc. Ignore peak.
http://caraudiosecurity.com/shop/product/products_id/7135.html
A jbl gto 7001 will run them lovely.
http://caraudiosecurity.com/shop/product/products_id/8040.html
The T1 amp tazzy linked wouldn't work with your two subs. Wrong impedance and I think the kenwood power is peak so prob only 300w x1 @ 2ohm so not powerful enough to do the gt5s justice.
Okay man, thanks alot for your help!!
Just one more thing, what is the best subwoofer that could go about 1000w RMS? :) I was looking into this http://cgi.ebay.co.uk/PIONEER-TS-W3004SPL-12-SUB-SUBWOOFER-1000W-RMS-ORION-/320604855989?pt=UK_Audio_TV_Electronics_In_Car_Entertainment_GPS_Car_Speakers_PP&hash=item4aa589deb5
do you think 2 of them would throw off enough bass? :)
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Don't take this the wrong way.
It sounds like you don't know what you want!
What do you actually want from you system?
Is this a quick throw it in the boot jobby or are you looking at building an install over time?
I wouldn't go with pioneer in all fairness. Have a look into spl dynamics not splx, AA, FI, Orion.
Two twelves ported would want at least 4cu ft after displacements. If your thinking of running 2k rms you'll want more batteries. Lots of 0awg and a fully sound deadened car ideally.
Plan your install out before you buy any kit otherwise it'll cost you double and take twice as long. Trust me I've got first hand experience with that.
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do you think 2 of them would throw off enough bass? :)
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I'm running a single 18" off 3,500wrms and it's not loud enough for me!
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Don't take this the wrong way.
It sounds like you don't know what you want!
What do you actually want from you system?
Is this a quick throw it in the boot jobby or are you looking at building an install over time?
I wouldn't go with pioneer in all fairness. Have a look into spl dynamics not splx, AA, FI, Orion.
Two twelves ported would want at least 4cu ft after displacements. If your thinking of running 2k rms you'll want more batteries. Lots of 0awg and a fully sound deadened car ideally.
Plan your install out before you buy any kit otherwise it'll cost you double and take twice as long. Trust me I've got first hand experience with that.
well tbh i want something to be as loud as i can with the one battery in the bonnet lol, Bit of a show off if i am honest lol, i would like to get 2 powerful subs and a decent amp with a gain control lol. i am fine with rigging it in its just i need to find out what subs and amplifier i need that will run it safely lol!
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Haha cool.
What car you got mate?
Normally two twelves or one fifteen is about ya limit for a boot. But obviously dome boots are bigger.
I'm stabbing in the dark here as we don't know what car but same principles apply.
Most car batts are around 50-70ah. If you only want one battery you'll need to upgrade it to a decent 100ah ish (only reason I say that size is that'll probably be the biggest you can fit in the engine bay).
Alternator wise. If you want any decent power this'll need to be upgraded. 150-210a would be good.
When you figure out what alternator and battery your going to be running you can decide on power. For instance (and this is totally "just my opinion")
95ah batt, 180a alt. 2.5-3k very max. This will allow you to "showoff" for short periods of time. This will also be very loud with two twelves or one fifteen.
65ah batt, 90a alt. 1-1.5k I'd say. This will still be quite loud but tbh lots of people run this power do won't be as impressive for "showing off".
Where are you based? Your more than welcome to come have a listen/play of mine mate. Different people have different ideas of loud. Mines nit loud enough for me, but only a hand full of people will sit in it when I turn it up.
It'll also give you a better idea of how power supple affects your install as I haven't got my alts in and have taken the 3 extra batteries out.
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Haha cool.
What car you got mate?
Normally two twelves or one fifteen is about ya limit for a boot. But obviously dome boots are bigger.
I'm stabbing in the dark here as we don't know what car but same principles apply.
Most car batts are around 50-70ah. If you only want one battery you'll need to upgrade it to a decent 100ah ish (only reason I say that size is that'll probably be the biggest you can fit in the engine bay).
Alternator wise. If you want any decent power this'll need to be upgraded. 150-210a would be good.
When you figure out what alternator and battery your going to be running you can decide on power. For instance (and this is totally "just my opinion")
95ah batt, 180a alt. 2.5-3k very max. This will allow you to "showoff" for short periods of time. This will also be very loud with two twelves or one fifteen.
65ah batt, 90a alt. 1-1.5k I'd say. This will still be quite loud but tbh lots of people run this power do won't be as impressive for "showing off".
Where are you based? Your more than welcome to come have a listen/play of mine mate. Different people have different ideas of loud. Mines nit loud enough for me, but only a hand full of people will sit in it when I turn it up.
It'll also give you a better idea of how power supple affects your install as I haven't got my alts in and have taken the 3 extra batteries out.
LOL that is more then enough info i need bro, thankyou so much for the help :) and im based in portsmouth :p it would be good to come see yours sometime :)
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Well I'm based in Oxford so a bit far for a meet lol. You are always mote than welcome to come have a listen if your ever near Oxford.
Its currently 146.5db but when finished the plan is 150db. Have a look at my build log "project 150db" in car audio.
Need anymore help let us know.
Karl