Question about Lanzar HRWDC15 Car Subwoofer

1 Answer

Speakers are making wierd sounds

Ok when i turn the cd player on my amp comes on and so do the subs. but the problem, is that the subs only hit for like 2 seconds then it sounds like a bunch of static coming out of them. they cant be blown if they work at first can they? any ideas or solutions to this would be great...thanks alot.

Posted by John Hartley on

  • briyzazny21 Jun 23, 2008

    same thing but i have a good ground... please help

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Yes........maybe the ground is poor,pin jacks broken ,open ground in the preamp stereo ouput...all for the ground..try this........ take a pice of wire and put one end in ground of car chasis in area with no paint, and the other side in the amplifier input pinjaks and check if the static goes off. good luck.!!!!

Posted on Mar 14, 2007

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I have 2 amps instalkled in my car one is sony 1200w 2 channel amp for speakers and one is solid audio f2500d for 3 subs my sound and every thing was good but suddenly from yesterday im having trouble when...

First disconnect the CD head unit from the sub amp and see if the other amp works. If yes, the problem is the wires to the amp, the amp itself, or the subs/sub wiring. If no, the problem is the head unit--probably an internal short.
If the other amp works with the sub amp disconnected, reconnect the sub amp to the head unit, but disconnect the sub wires from the amp. Try the CD player. If the amp goes to protect with no speaker wires attached, the amp is bad. If the amp is OK, the problem is the subs or sub wires. Hook the wires up to the amp again, but disconnect them from the speakers. Try the player again. If the amp goes to protect, the problem is the amp wiring. If not, the problem is the subs. Check the impedance of each sub using an ohmmeter to determine which amp is out of spec.
Please let me know if you have questions, and thanks for using Fixya.
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How to tune properly

make sure your speakers are wired to the amp with correct ohm load, turn gain, bass boost all the way down on amp, zero out your equilizer on the cd player and turn it all the way down then start raising volume on cd player., when u can start hearing music thru the subwoofers adjust the cd player volume till the sound from your subs is at its peak without any distortion. then start raising the gain on your amp till you are happy with the sound. It gives you the optimal signal strength coming from the cd player and the smoothest sound.
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The tuner works fine, all the speakers play including my sub. When I put in a cd, only my sub makes sound, and when I go to the ipod no sound comes out. However When I go to the zone control and select the...

are you using more than one amplifier? it sounds like you may be using the blue wire to turn one amp and and the blue/white to turn the other one on. use the blue/white only. the blue wire is antenna remote and turns off when not in tuner mode.
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When the radio is on the sound comes out of all the speakers. when the cd player is on the sound only comes out of the sub woofer

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Is there a wiring diagram for the nikkai EAPA450 Amp

Hi, if you still need a photocopy of instructions email me [email protected]

If you want instructions in brief this involves POWER CONNECTIONS, PHONO LEAD & SPEAKER CONNECTIONS:

POWER (At the same time when routing these wires, I would connect the PHONO LEADS from the car cd player to the amp, if your car cd player only has 1 preout (1red & 1 white) then you will need two phono splitters, a female to 2 males. Phono leads carry the unamplified sound from cd player to the amp):
~ Permanent 12V+ (Thick lead that is fused direct from battery all the way to the amp, wire must be 20a to 30a +, hence 1cm diameter wire, known as AWG8, Maplin sell cheaper kits then most)
~ Amp REMOTE (A thin insulated cable (5a is OK) from car cd player amp remote wire, this turns the amp on when the cd player is on, if your car doesn't have an amp remote wire, suggest nearest ignition supply or seperate switch that you turn on when you want to turn on the amp)
~ GrouND 12V- (Insulated lead (20a to 30a) to nearest part of unpainted car chassis such as interior panel screw hole, instead of an insulated cable all the way from the batery, this is common practise.

SPEAKER:
Each speaker has a - negative & + positive, these must connected correctly. The amp has 4 channel, 2 channel labeled as front, 2 channels labeled as rear. Using speaker wire, connect cable from amp to speakers. Note: Ensure the speakers being connected only receive sound from the amp (Not cd player as well, as would damage players or at the very least impair sound)
The amp has a feature called bridgeable this means a sub 8" or 10" sub can be powered by 'bridging' two channels. For example there are 2 ways to bridge power a Sub on the NIKKAI EAPA450:
i) Sub speaker wire positive + to channel RL and Sub speaker wire negative - to channel RR.
OR
ii) Sub speaker wire positive + to channel FL and Sub speaker wire negative - to channel FR.

Switches:
~ Bass boost, meant to be on for a channel if using sub, otherwise off.
~ X-over mode adjust hi/lo frequencies, only work if both x-over switches are on! Then adjust switch frequency knob, until it sounds right.
~ Gain (Volume knob) adjust volume knob up or down, until it sounds right!

NOTE:
You will need patience! many hand tools and parts such as: Wiring kit, fuse holder 20a/30a, Phono leads, speaker cable, Fork/ring connectors, wire strippers, wire cutters, set of screw drivers, also ueful to have zip ties to tdy excess cable and 'P' cable clips to tidy speaker wire to shelf, etc.

OK

Any more questions just email me [email protected]
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I have a few problems. i have 2 amps and 4 subs. first problem is when i connect one amp to my speakers it just hisses and crackles. this never happened before. when i turn up the gain to try and get...

The first amp, sounds like there is straight power going through the gain instead of it being limited. The second amp...hook the other subs up to it and see if it sounds ok. If so, then the subs are messed up. If it sounds the same, make sure the subs are connected correctly.
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My sub is making a wierd noise when i crank it up

you might be over powering the sub, turn your amp down a little bit
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Thumping sound

You either have a bad ground from your amp to the vehicle or a problem with the amp. Where is the amp grounded? Do not ground an amp to a seat bolt or side panel on any vehicle. The weld points on the car itself cause issue with ground. Take the ground wire directly thru the bottom panel (floor) Check befor you drill! don't hit a wire/fuel line, etc. That will give you a solid ground. Keep your ground wire length to a minimum. 18" or less, and use the same gauge wire for ground as you do for power. Hope this helps
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No sound!!!!!

sounds like you blew an interior speaker.. it would cause the radios internal amp to shut down.
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