My power and protect light dont light up but im still gettin juice because my light on the amp light up....when i start my car the word ( hifonics) lights up bright and then dims a little...i have to channels coming from my subs and on my amp i got ( - - + +) but its a mono..i cant get any sound to come out my subs..
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Re: problem with hifonics 1505 class d mono
The positives are connected together and the negatives are connected together. The two pairs of terminals are for convenience. You'd connect one speaker to a pair of positive/negative terminals and you'd connect the other speaker to the remaining pair of positive/negative terminals.
You need to confirm that you have a good signal feeding the amp. If you have another amp in the vehicle, swap the RCA cables between the amps to see if it makes a difference.
You also need to confirm that the speaker are working properly and that there are no broken connections in the wires. If you disconnect the speaker wires from the amp and touch the wires across a D-cell battery (for a fraction of a second), the speaker should pop. if it doesn't, check the wiring to determine why.
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you need to wire each sub down to 2ohms then wire them together like the one in this pic http://m.seimg.net/product/img/subwoofer_wiring/2_subs_DVC_4_ohm_mono_variation2.jpg witch will give you 1ohm so you will be getting every bit of power that amp has but you should get a bigger amp for thos speakers
G'day, I have dealt with Hifonics a fair bit here here in albury, we used a complete system for a competition car.
the amps are pretty solid, but they are very sensitive to wiring. I would start by taking off one set of wires at a time and see if the protect light turns off. (make sure there is no power to the unit when removing or fitting wires) so for instance, start with the front left speaker, then if not move to the front right. etc etc.... By doing this you will be able to narrow down if and where it is shorting out. if you check all your wires and the protect light is still on, i would check where you have mounted the earth cable. make sure it is a solid connection, and that there is good metal to metal contact.
if you have any further problems, or this doesn't solve your problem phone, 0413443600, and i can walk you through further trouble shooting.
oh and dont forget to rate my solution
That is still a single channel cass D amp. Each (-) and each (+) terminal are connected so its actually like only having one. This is so you can hook speakers up in a series circuit to lower impedance, because this amp is 1ohm stable. What causes your speakers to blow is too much power. What kind of speakers are you running? This hifonics amp is very powerful, they are getting big in the competition industries beacuse they put our true power for less money and they are tough. That 1600 amp you have may be putting out more like 1800 watts at 14.4 volts which is 900 per sub at 1ohm so be careful this amp has tons of power and its true rated its not like a sony or rocksford or kenwood that says 1800 max and then in small writing it says 500 rms. This amp puts out true. I have 3 hifonics amps and love them.
i had an amp do that a few years ago i did everything it turned out that it was the cdplayer. then agin myfriend had the problem and it was his altonator he had to get a ground loop isolator they are cheap
It's likely that the amplifier has shorted output transistors. If that's the case, they will have to be replaced. If you have zero experience with electronic repair, you should pay someone to repair it instead of trying to repair it yourself.
well your amplifier is obviously going into protect mode,(i used to have this amp and it is awesome) anyway i would go through just to be sure and check all the power connections with a test light, remote wire, positive, and ground. and check the fuse to see if it is still good. you can buy a test light at wal-mart and any automotive store. if you stil have a problem then i would check to see if your running below 1 ohm on this amp. that would cause it to go into protect mode. if all this fails i would just go buy a new one.