That's a good point Brian'
If you're seeing AC voltage from the alternator, then you have a serious problem; in which case... "Do Not" use the vehical and have it checked. But if it's reading DCvolts... that's good, and what you're supposed to see. Brian also said "if the battery is compensating (being used as a primary power supply source), the alternator isn't big enough.
Best regards!
I'm lost too, its really weird thing. Like there is no logic at all. well tomorrow christmas so i wont do much, but after i will install this stereo system to another car... Because i really dont understand where could be a problem, car or bad stuff... Just hope not all together
Nikila, don't be frustrated!
Whatever the electrical system is providing for that amp, it's also providing for the other audio system equipment. If you are feeding the "low sensitivity" rca's on the amp 2.5 volts from the HU, then there's your problem. The low sens inputs on the amp can accept up to 800mV; which is less than a volt. To over feed it will cause the amp to go into "protect" mode... "as it should". Don't take the equipment out. Just provide what the amp is asking for e.g., 12 to 14 volts DC power supply, and between 2 and 8 volts input at those rectangle "High input" ports on the control panel; use the gain control to fine tune the output level of the amp, should blend in with the other amp's output with no distortion.
Rigtec: From where did you imagine that this amp accepts only 200-800mV rca -input level????????
Usually it´s on older models 0,2-4V (sometimes 0,2-2V) but nowdays approximately 0,25-4V minimum (usually 6-8V max. have been seen on todays amps).
Also from where can you even buy a HU nowdays that gives less than 800mV rca -voltage? Do you live in which century?
Usually it´s on older models 0,2-4V (sometimes 0,2-2V) but nowdays approximately 0,25-4V minimum (usually 6-8V max. have been seen on todays amps).
Also from where can you even buy a HU nowdays that gives less than 800mV rca -voltage? Do you live in which century?
Hehe, just got kenwood KAC-6104d. new rockford fosgate RCAs. Will try to use this amp and see what will happen.
Also about VAC. My car gives 31VAC over battery terminals, so i have measured on brand new car and it also shows 30VAC, so maybe its really normal to show that much?
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Well, i just was pretty sure this voltmeter which my father use professionally at his job works fine. But i will get another one to check, no problem.
If your father is using professionally multimeter at his work....so why not he help you? Wasn´t it his car..by the way?
E: Kenwood KAC-6104d has RCA input sensitivity 200mV-5V
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Well i cant see anything he could help me with, cuz i can measure battery and other stuff by myself, and i dont think if he tries measure battery he will have different readings. Yes its his car.
But we getting too far from the problem i see. I will try to put stereo to his car. Because i see nothing else i can do, i need be sure its not my car making this problem for me. Just i have no idea how i will connect HU to his car... But i guess i will have to find out soon.
Have a nice Christmas everyone!
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I never said that this amp will not accept more than 200mV-800mV. What I stated was... the original poster needed to choose the "High input" (rectangle) ports on the amp, if... the HU's "high output" signal (speaker outputs), are being used to provide signal to the amp.
I don't know who you think you're talking to with that tone! This is a fine forum, with a very "respectful" team/community, and is one of the things that sets it apart from some others that cultivate the kind of behaviour that you have displayed in quotes above. I've already posted a link that explains all of my statements regarding "input sensivity" modes; this amp has two!
Regards and Happy Holidays!
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haha, its not that i cant afford professionals to take care of this. Just i used to deal with everything by myself, and to do everything i can before i will ask specialists for help and pay them. Because i can take my car and system to them and they will probably do it working well. But i choose harder way where i can get experience from what ive done.
Im pretty sure that if i could know same much as u know i would figure this out a long ago. But im really happy that so many people here try to help and give good advices.
Well said Nikila! I think most of us here feel the exact same way. Yes, it would be easier to just pick up the phone and call a pro to "make the problem go away", but... that's the easy way. tis' much more gratifying to figure it out, and "diy" (imho)!
Way to go Nikila!
I may have understood wrongly..but this is what you´ve said:
I am sorry if you disliked my ´tone´, it wasn´t ment that way..I did poke you little, because I really did understood that thing above differently. That is correct, I do not know to whom am I talking to... I think if I do disagree on something..I´ll say that out loud and not going to crawl in front of.......hmm....someone.
Merry Christmas!
mika,
It doesn't matter how much you may know about systems. The most important thing to remember (on any tech support forum), is to show respect to every individual because first of all, you don't know what they may be going through at that time. And additionally they have a God given right to be peaceful here; imo, that's even "more important than being right" about some theoretical P.O.V.! Hoping you agree.
Looking over one of the statements that I made in your quotes, I see that one part is improperly written when I said:
"... If you are feeding the "low sensitivity" rca's on the amp 2.5 volts..."
This should read: "if you are feeding the "High sensitivity" (or low voltage range) 2.5 volts..." because "low sensitivity" would mean that this input would need a higher voltage to be driven to full output. When I noticed this error, it was too late to edit.
Here's some info wrt "input sensitivity" gain settings, and audio line (RCA) voltages; most have a high and a low range setting:
http://www.jlaudio.com/header/Suppo...rial:+Input+Sensitivity+(Gain)+Setting/287546
best regards
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I do agree you with this
Sometimes, when I think things in Finnish and translate them to U.S. in my head ...I´ve beed noticed that the ´voice´ of them sometimes turns to annoying way, but I think we can manage
I do agree you with this
Sometimes, when I think things in Finnish and translate them to U.S. in my head ...I´ve beed noticed that the ´voice´ of them sometimes turns to annoying way, but I think we can manage
Not a problem, of course!! "No hard feelings" ,; {-
Thank you for your offering, rigtec (Happy Holidays)
Hello everyone, hope u have a nice holidays so far.
Just have installed new amp http://images.kenwood.eu/files/prod/1195/5/KAC-6104D_(EN).pdf
I want to adjust gain on amp with sine wave 50hz. Have read that i should put voltmeter VAC to sub outputs on amp and measure voltage. And now i wonder how many volts should i adjust it to? As i understand different amp has different output max voltage. Amp is 200RMS, receive 14.2 V from battery. Is it possible to calculate right voltage? Or should i just play the music and adjust gain until distortion?
Also i have Bass Expander swich, i wonder how does it work and should i turn it on?
Just have installed new amp http://images.kenwood.eu/files/prod/1195/5/KAC-6104D_(EN).pdf
I want to adjust gain on amp with sine wave 50hz. Have read that i should put voltmeter VAC to sub outputs on amp and measure voltage. And now i wonder how many volts should i adjust it to? As i understand different amp has different output max voltage. Amp is 200RMS, receive 14.2 V from battery. Is it possible to calculate right voltage? Or should i just play the music and adjust gain until distortion?
Also i have Bass Expander swich, i wonder how does it work and should i turn it on?
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first you have to know your meters specs,not all meters respond to different ac frequencies some are narrow band based on the principle line frequency that they are intended to measure.after that applying Ohm's Law should be easy.
long before worrying about what gain to set have you tried to see if this amp works with the car running?
can you upload a picture of your sub?
long before worrying about what gain to set have you tried to see if this amp works with the car running?
can you upload a picture of your sub?
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