Need help Please. I just bought a used 40w amp and don't know how to install it. I could experiment but thought I would ask people that know and save me problems. Here is what the unit has:
Red Lead- should this be switched or unswithed?
Black Lead- to good ground, right?
Pink Lead- ???
Speakers- R+ R- L- L+
High Input- R+ R- L- L+
Two Gold Plated RCA plugs R L - ???
Min/Max screw- ??

This is an LA Sounds unit. Is it any good? Where should it be installed? It is about 4" X 10" and going into a '70 F100. THANKS in advance!!

 

I am really not all that familiar with LA Sounds products, but I will try and shed some light.
Black- Ground
I would assume that red and pink are both hot leads. One will be your "turn on" lead, and the other to have constant power at all times. Since I am unsure which is which, you will have to experiment here. If you will be using the RCA Jacks, for get about the "high level" inputs. Set your min/max screw in the middle until you get the amp working, then set the power you want you speakers to have.

Hope this helped.

Murph

 

Let me tell you what my setup was like.

The source power: (Red lead goes to the battery)

Ground: I grounded this to the bolts holding the seat in the cab

Mine was blue, your might be pink: I had a small blue wire which I hooked up to the fuse box as a 12volt source, this is the power wire to tell the amp to turn on and drain the battery. I put a switch on this blue wire so that when off, the amp was off.

You can buy an adapter that adapts you rear spearer wires to a RCA plug. Each side, you now have RCA Lefts and Rights. These plug into the amp.

Max/Min is probably referring to the bass output of the amp.

The other input on the amp is if you use the output wires from your source unit to plug into the amp, I just bought the adapter mentioned above.

Daywalker

92' F-250 351 4x4 xlt 4.10 5spd supercab longbed

Sound System: Stock Stereo, RockfordFosgate 800 watt amp, Vega 18" sub (400 watt rms), one Cerwin-Vega LS-12 3 way floor speaker with the Vega sub removed (because I blew it) and a RockfordFosgate 12" sub (500 watt rms) in its place. And one Boise floor speaker with a 75 watt power capacity (you know it ain’t gonna last).

Performance Mods: K&N Air Filter.

Cosmetic Mods: Black Grill Guard, 5% window tint, bug guard, bed liner.

http://albums.photopoint.com/j/View?u=1426655&a=10683799&p=36629681&Sequence=0&re s=high

 

Thanks Guys. If we have good weather this weekend I'll hook it up and let you know what happens. Just to let you know- it will be connected to Blaupunkt 6.5" coaxial and a pair of JBL Loud and Clear 6X9 speakers. I don't need the thump-thump sound- just good music!

 

Hi
I don't know LA Sounds either but on an amp red is normally hot (on a deck it is yellow).Black is always ground and as the others said (mine is also blue) the pink will be what is called a remote or accessory lead . A factory deck will not have an output for this but an aftermarket deck should . The wire on the aftermarket should be either blue or blue with a white stripe.This is so that your deck turns on and then your amp or you would hear a pop and if you volume is too high blow your speakers. As Murph said the screw is your gain control so just follow his instructions.Now with Rca plugs red=right, black or white=left , with speaker wires when you are dealing with colors
eg.blue and light blue ,light blue is positive and blue is negative. With stripes the stripe is positive (hence the name positive marker) and the same color minus the stripe is negative.
Hope this helps.
tonka

 

Greetings,

I am very familiar with car audio amplifiers and systems.

Here goes my opinion:

The speaker R+ R- L+ L- are used to connect your amplifier to your speaker system. The reason they are labeled + and - is so that you can properly set the phase of the right and left speakers relative to one another. Speakers should generally be wired in phase.

The two RCA's are used to send **low level** ( 100mV - 2.5 V rms )stereo signals to the amplifier. If your head unit has RCA outputs, then I would recommend that you use them.

The hi-level R+ R- L+ L- inputs are used to send **speaker level** ( 1V - 10V ) stereo signals to the amplifier. These terminals will generally be connected to your head units speaker out wires. This is generally not a good idea as the sound quality will be inferior compared to using the RCA stereo inputs.

The black wire is for chassis ground aka battery -. The red wire will be for Power aka battery +. If the amplifier does not have an onboard fuse, that I would suggest that you install a 5 Amp max inline fuse on the Battery + lead.

That leaves only the pink wire, which is most likely the amplifiers Remote turn on lead. This should be wired to your head units RTO. If that is not an option, then use your vehicles switch +12V. Please be sure and fuse this line with a 1 Amp maximum fuse.

The **** is most likely the amplifiers gain potentiometer. I would recommend that you start with both your head units volume control **** at minimum as well as the amplifiers gain pot. turn your system on and play some music that you are familiar with. Slowly turn up your head units volume **** to a maximum of half volume. Then, slowly turn the amplifiers gain pot towards max until you hear a comfortable, undistorted level of music.

I hope that this is helpful,

Bender

 

Thanks to all that responded. I installed the amp to a new JVC stereo today and it sounds great! The unit did not come with the RCA jacks so I used the high level inputs.