Powering Three Amps

[ToggleHead]

i find having ONE full range speaker kinda disrupts the stereo balance....anything with panning really get a little screwy....and more thnigs have panning then you think......=]

if you like it...leave it...but just a thought.....=]

if you run those two alpine subs on that amp BRIDGED, it will run down to 2 ohm...which they can handle so its ok....youll get a lot of power out of them.... but becareful not to overdrive them OR the amp.....are you sure the lanzar is rated down to 2? depending on the adjustments on the amp itself...you might get better results runningeach sub off its own channel.....are you running it stereo?

the single jbl....you would want this, imo, to run the higher pitched bass.....so you can run the same signal from the sub outs on the HU, but split it with Y's before the first amp.....either one.........the JBL....should be set with a crossover between 120Hz, and 80Hz, depending on your liking......prefferably 120, so the two alpines will pick up from 80 and below.....
to do this properly, you should get some kind of NOTCH filter for the Jbl...so only allow it a certain range of frequency.....but thats just me..

also...obviously power the interiors off the headunit, since you have no other amps, and front and back should be self explanitory...=] does the head unit have a hpf? if so set it around 120 so the interiors drop off where the subs pick up...as to not distort the interiors.....

this help?
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[Google]

[JayDubya]

[ToggleHead]

ooo also....if that 6x( is on the same air as the sub...you will destry it.....the air meved by the sub is more than enough to screw with the air ofthe smaller speaker.....just something to think about.
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[wb131988]

Ahhh yes I thought that togglehead so I will definitely take that one sony 6x9 out
As for the amp specs, here they are:
Lanzar Vibe268 Amp:

2 x 500 Watts RMS at 4 Ohms
2 x 1000 Watts Max at 4 Ohms
1 x 2000 Watts Max at 4 Ohms Bridged
2 x 800 Watts at 2 Ohms
Electronic Crossover Network
Bass Boost Circuit
Bridgeable at 4 Ohms
2 Ohms Stereo Stable
Tri-Mode Capable
Gold RCA Inputs
Line Outs For Left & Right Channels
Power & Protection LED Indicators
Advanced Protection Circuitry
Remote Control Bass Booster
Frequency Response: 15 Hz - 35 kHz
S/N ratio: 90dB

Any ideas?
I like the sound of one good amp instead of two crappy amps JayDubya, so what amps would you have in mind? I am forced to reconsider my sub and amp setup now so please continue to post replies for me :)

[wb131988]

O yer about the low pass filter on my headunit togglehead....

It can be set to 80hz, 120hz, or 160hz
So does this mean I have to somehow connect the JBL to the headunit sub input as when I alter the 'Subwoofer on' settings on the HU it doesnt affect anything? Many Thanks

[ToggleHead]

botho of your subs should be attatched to the sub out...its the only preamp out of your HU.......set that HPF to about 120, and then you can tune your subs from there.....=D
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[wb131988]

I have found out how to adjust the level of the subwoofers now, but it only lets me set HPF on the HU? my amp has a LPF though...

I have just noticed another problem... When I change the settings on the HU and then turn it of and back on again, the settings I changed go back to normal- something to do with memory?

Cheerz :)

[ToggleHead]

no that means youre wiring is wrong.....the red wire should be your ac power...and the yellow is a constant power....thats for the mem or the HU.....if you twist hem together in the same pair...it will still owrk..but youll lose your settings like you are now.....

LPF on the amp is good.....dont let the jbl go above 120...and the alpines above 80...

then you'll have to tune each amps gain, and your HU sub level.....each style of music usually needs a little sub level adjustment via the HU.......dont be alarmed ...this is normal......=]

i think youll be happy
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[JayDubya]

Hmm, that Amp might still work alright. 2*500watts RMS at 4 ohms is pretty good. You can't use those two apline's bridged though. You'll have to keep them on a seperate channel if they are 4 ohms each . . . you might burn up the amp if you bridge them.

One amp that is freaking amazing is the memphis 1000d. It can set you back $500 though =/
it can put out over 1100watts RMS bridged at two ohms if memory serves me right. That Lanzar should do fine for now.

So do you have any of this set up right now? When you do, your headlights are probably going to dim . . . along with the headunit, dashboard, and interior lights. You MAY need to get a capacitor too.
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JayDubya aka JW Jay JD ^> ﺵ

[Xal]

Get a cap anyways, it won't hurt and it will help keep the power clean and constant.
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[wb131988]

Yes at the moment I have the Sony Amp bridged powering the JBL, with the LPF on set to 120hz. The door speakers and 6x9's are also working, running off the HU, which I have tweaked the settings on but was gutted when I found out they had not been saved

I will use separate channels off the amp, so this means I need to re-wire the subs in the box to their own terminals as they are running parallel at the moment, and set the filter to 80hz on this Lanzar. I am going to purchase a 5 farad power cap, which I connect to the power wire before it gets to the distribution block???

Obviously I will be looking toward a much higher quality setup in say two years, but for starters I have learned alot about car audio and so use this to great advantage when I have a greater income

O yer....... So which wires do I need to rewire on the back of the HU? Finally a near complete professionally guided install :)

[wb131988]

Also is it OK to connect RCA cables between these two amps- does different makes of amp change anything? I wouldn't have thought so.

Do you think I should alter the HPF on the HU aswel?

[ToggleHead]

hpf should stay around 120....this is where the interiors will drop off to leave it open for your subs......

RCA's btw amps? elaborate.....you mean signal from HU coming out from one amp into another.....should be ok as long as they are PREAMP outs..... i personally would just use a Y connector from the HU, unless this is what you mean....then keep it up...=D

as for the wiring.....in the dash there should be a red wire, Which is your accessory....and a yellow wire, which is your constant power.........make sure they are hooked up to their respective colors......heres a good way to check...if your ballsy.....=]

turn car off, but leave battery connected. Hook up ground wire (Black / earth) of HU.....Take the red wire from your HU, and touch it to the red wire behind the dash......no power right? turn the key to ACC.....power? now if you take it off the Red wire and touch it to the yellow wire (or whatever color your constant turns out to be).....your radio should be able to turn on....with the key out....and nothing else in your car on........THIS wire is your constant power.....and should be hooked up to the YELLOW wire on the HU......this way, the yellow wire supplies your radio with power for it memory at all times.....while the Red wire tuns the radio on only when the key is in.

good?
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[wb131988]

Ahhhh yes cheerz Togglehead it saves its memory now SUPER DUPER!!

As for the RCAs, I mean connect the RCA cables to one of the three 4v preouts my HU has, then connect the other end of those same two cables to the Sony's RCA input pin jacks. Then connect another pair of RCA cables from the Sony's 'through out' pin jack to the Lanzar's RCA input pin jacks. Basically cables from the HU to the Sony, then from the Sony to the Lanzar. Is this OK?

[ToggleHead]

again...as long as those "outs" on the Sony amp are PREamp outs...then yeah that should be fine...=D

did you use that trick? or do it the smart way and just read a car manual...=P
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[wb131988]

Well I got a friend to sort it out but he basically did the same as you instructed so the 'trick' worked

As for the amp output connection, the 'through out terminal' as Sony call it, I looked in the amp manual and it says nothing about 'preout', but it does say 'use the through out terminal when you install more amplifiers. The signals are output as they were input.' so I assume this will work fine....

Fantastic now I have all the important knowledge I need to get my system up n runnin at high quality thanks to you guyz *Much Appreciated* I know Ive probably gone on abit but we got their didnt we??? lol

[wb131988]

Also which sub would you rather have- a JBL GT4-12 sub, or a Sony Xplod XSL121P5? Remember I want the Sony Xplod Amp to run off one of these (I am considering changing the JBL GT4-12). Thanks

[ToggleHead]

personally...if you already have two 12's....i would get a different size......

i have a 10 and a 15 for a reason....more bas RANGE......from the bass drummy highs.....to the electronic rumbley lows...you get it all.....why not consider some highpower 8" subs to go withthose 12's
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[wb131988]

How many 8 inch subs would you recommend- one or two? What are they good for? What sorta 'high power' we talkin here? Maybe another wise change coming my way.....!! [/b]

[wb131988]

Would those 8's be OK in an enclosure with two Alpine R types moving the air inside?

[Xal]

I would do 2 8s in smaller/ seperate boxes or in the same box but enclosed from the rest of the box.
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[wb131988]

Will it really make a difference if I take the JBL out and fit two 8 inch subs in? Remembering I already have those 2 Alpine R's in.

[ToggleHead]

yes it certainly will......and different air...DEFinitely.......

those smalle rsubs will allow for the higer bass to be passed more efficiently through it...resulting in better overall quality.....trust me on this....i think you will be pleased
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[wb131988]

I am gonna do that then ToggleHead. If a get a KICKER SOLOBARIC 8" S8L7, will that be good? If so do I need to make any adjustments or will it be fine in the same enclosure as the Alpines?? Thank you

[ToggleHead]

i would give it its individual box...it will sound better....is that one of those square kickers?

with the way sound waves actually work...i am not a technical fan of anything other than round speakers...but i have not actually heard this speaker to give an accurate judgement.....i have heard the 12's, and i dont like them.....LOUD as hell....just not as clear for my ears....but yours may be different...cuz they LOOK cool as hell...=D
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