After a recent move I reconnected my speakers to the amplifier, but there is no sound when I connect to the USB port on my iBook to listen to digital radio or CDs downloaded to iTunes. But I can listen to both digital radio and CDs on headphones. Previously the amplifier was also connected to a Kenwood CD player, which is old and needs repair and I am no longer using. I am quite sure the speaker wires and auxiliary wires are connected as they were before the move. There is also a wire for "system control" (my translation -- this is a Japanese model). It is not connected to anything. Is this the problem? Also I have not connected a ground wire to anything. Is this the problem? Before the move an antenna was connected, but since I don't listen to radio stations I have not reconnected it. I am sure that the problem is my naivete, but there is no one here who can help with this.
The other end to the unit itself .from amnplifier to unit in that form it will get the connection.if connected from unit to amplifier then the end in speaker system .
You need to have the ground wire connected to complete the circuit. the system control is the remote connection this is so the radio can turn your amplifier on and off you should connect it.
hope this helped please rate well.
If you need further help, reach me via phone at https://www.6ya.com/expert/mark_445a24324be9eb03
Please list everything in your system....
I get from your posts..
1. Laptop (source using 3.5mm headphone jack)
2. Reciever (using 3.5mm jack to rca adpter cable)
3. Amplifier (rca to rca input on amplifier)
4. Non-Powered speakers (connected via speaker wire)
Is this correct?
all the 12V talk is about car audio - not home audio. Please disregard those posters, as they have not taken the time to read your question in full.
SYSTEM CONTOL is an output that will turn on accessories - such as an equalizer or amplifier - it is a signal from the reciever to "turn-on". So it is in standby mode until it gets this signal.
Please list the componentsin your system, so I can further assist you with wiring it up.
Thanks
I don't understand "rca to rca input." The AM/FM receiver and amplifier are one unit. The headphone cable connects directly from my iBook headphone port to the amplifier white and red auxiliary input. My system consists of my iBook, connected by headphone cable to a receiver/amplifier (one unit), which is connected by speaker wires to Kenwood speakers. There used to be a CD player also connected to the amplifier, but I no longer have the CD player.
Im afraid you have been using the incorrect terminology for the devices you have.
Now i get that you have the following...
1. Laptop (source of signal) connected to a...
2. Reciever (with am/fm, aux outputs, built in amplifier) via 3.5mm to rca (red white) adapter cable.
3. Standalone unpowered speakers (getting the power from reciever)
In this case - Your laptop connects via 3.5mm jack to rca adapter cable to your AUX IN or CD IN or any other IN jacks.
Your speakers are wired to the channels on the reciever directly.
The SYSTEM CONTROL is not used, as there are no other components to turn on.
If, when you turn on the AM/FM and hear no static or music via radio coming from the speakers, you have an internal problem. Possibly fuse, or output FET blown.
Whatever IN you have the adapter cable hooked into on the reciever, you must have that seleced on the front panel to hear the music. ex. if the RCAs (red/white) are connected to CD IN on the rear of the reciever, CD must be selected on the front to enable the signal to be played through your speakers.
You should hear the relay kick in when you switch from input to input. If not, your switching relay has failed.
If you have troubleshot the wiring as correct, your next step is a trip for professional repair.
Thanks for using FixYa!!
×
I believe "System Control" is the remote on for the amp - Connect it to a 12v source, and see if the amp comes on.
Please rate if this helps :)
The ground wire from the amp probably needs to be connected to complete the power circuit for the amp - you said you had pictures for the back of the units, it would be helpful to see them!
[email protected]
Okay, you can forget the "system control" wiring - it was plugged into your cd player, but I don't believe it's needed.
A couple questions: Can you listen to music through the headphone jack on the Amplifier itself? In the display, is MUTE flashing?
Also have you tried resetting the amp? Power it off, unplug it from the wall, then plug it back in while holding in the ON/STANDBY button - this resets the internal computer.
I'm not sure if you have read my previous comment - I'll repost it. If you can answer these questions, I may be able to help further.
A couple questions: Can you listen to music through the headphone jack on the Amplifier itself? In the display, is MUTE flashing?
Also have you tried resetting the amp? Power it off, unplug it from the wall, then plug it back in while holding in the ON/STANDBY button - this resets the internal computer.
To listen to headphones plugged into the amp:
The cable from your ibook plugs in just as you have it now - one end into the headphone jack of the ibook, the other end into the aux in or cd in on the back of the amp. Then plug a pair of headphones into the jack on the front of the amp. This jack is the large style philips plug - a larger version of the headphone jack on your ibook. You'll need headphones with the corresponding plug, or an adapter plug that you plug the headphones in and that then plugs into the headphone jack on the amp.
×
You can get the required parts and wires from radio shack websites or from best buy web sites.also local electronic shop will provide you with required wires .just connect it properly and check out with proper settings couple of times it will solve the problem.
All the connection hub is properly connected, but no sound are given, try to check the USB wire, that was happen to me last time,, so try to use another usb chord
Hi and welcome to FixYa,
Always, on a Kenwood amplifier, the following wiring would be needed:
The always on B+12 being high current would preferably be connected direct to the battery's + terminal or the wire going to the IGN switch that when tested/measured would have a +12 even with no key. Similarly, a trigger on +12 is a remotely controlled wire normally switched on (+12) by a head unit such as a car stereo or a car CD player. In an installation where there are none of such, a simple toggle switch would serve the purpose where one terminal goes to the trigger on (system control) and the other terminal to a +12. Alternately, wiring this to an ACC +12 (when key in IGN switch is turned to ACC) would likewise work. The ground serving as return path for power to the amplifier must be connected to the body ground of the vehicle preferably the firewall or the flooring and not just the ground wire of the harness nor the dashboard metal bracket.
Good luck and thank you for using FixYa.
Appreciate your additional posts. Since your post was under a Kenwood Car Audio Amplifier, it was presumed to be a mobile setup.
The Kenwood S270 are the speakers, what is needed now is information on the brand/model of the amplifier.
The connection would not need the USB port of the iBook. What is needed is to connect the headphone jack of the iBook before the USB port
using an 2 X RCA to 3.5mm baby phone plug.
The white/red RCAs would be connected to AUX IN of the Kenwood R-7Pro amplifier. 
The Kenwood amp must then be set to AUX on the front panel controls.
The ground loop antenna is connected to the FM 300. The GND is only needed if you are using an external (roof type) antenna with a coaxial cable.
The use of the 2 X RCA to 3.5mm baby phone plug was originally proposed by taran_2005.
If the iBook to the AUX IN connections are correct, the speakers are wired red/black left and right, the receiver is set to AUX, the iBook works on headphones, then the Kenwood R-7Pro has an issue.
To my knowledge, this particular Kenwood is a JDM (Japan Domestic Model). and therefore operates on 100 Volts. If this was used in another country, was there a transformer used or was it modified to conform to that country's voltage, say 220 , 240 or 120?
Additionally, you may want to verify if the S270 speakers are working. This could be done with the use of a single 1.5 volts battery. Connect the red/black wires of the speaker to the battery terminals and a clicking sound should be heard from each of the speakers. Of course it would be better if you have access to a DVM/VOM (continuity tester) but the battery should serve the purpose.
You could also try transferring the red/white RCAs from the AUX to the CD IN and correspondingly set the front panel control. It may also be settings on the front panel controls (depending on the availability of the versions that you have):
Please try above mentioned buttons/switches. One may have been inadvertently engaged or disengaged.Speaker A or B;
Muting;
Tape Mon.
Hi again,
Any update on the TAPE MON? In what country was the amplifier last used?
I understand and would look forward to your update as you are an hour advance of my time.
Ashita then or later
kyou.
The GND/ground wire is no longer necessary as it has something to do with the antenna.
Have you tried pressing/disabling the TAPE MON button?
Based on all your responses, then the fault is internal to the electronic circuitry of the Kenwood receiver. At this point, your best bet would then be to seek the services of an authorized Kenwood service center or a qualified professional.
×
The amplifier needs a positive power input and a negative power output. The power to the amplifier must be able to get in and get out in order for anything to happen. If the wiring is not correct, if it is too small for the amplifier, if a connection is loose or if a fuse is blown you'll get no output. thus connect the ground wire. antenna is not u problem..u can rule that one out...hope this helps
Thanks for using Fixya
Have a nice day!
You need a 3.5mm 1/8" Female Mini Jack to 2 RCA Plugs Audio Cable, like this one. Should be about $5.00 at any electronic store.
Image
http://img.alibaba.com/photo/205246107/3_5mm_1_8_Female_Mini_Jack_to_2_RCA_Plugs_Audio_Cable.jpg
Thanks.
Hi..this problem may be due to the wiring problem.
check all the wires whether it is properly plugged.
Mainly check the wire which goes from the amplifier
to the spreaker or change that wire.
check it out..
thank u..
Check all the wires and connections b/t tham.
315 views
Usually answered in minutes!
All wires seem to be connected properly. I thought I sent you my credit card information for advice by email. I think this means that I am paying for expert service and am skipping generic responses.
I had already checked all wires before contacting FixYa. The speaker wires appear to be firmly connected and in the same way as they were before I moved. I have never had any problems with the speakers before. It seems that the problem might be in the speaker wire connections. These were originally set up by the shop person who delivered the system from the store. I could email you a photo of the back of the amplifier and the back of the speakers where the wires connect.
My system is not a car stereo but a home system, as I indicated in my initial inquiry.
I can get one tomorrow (it is now 9:50 p. m. Japan time), but what do I do with it? It looks like the cable that connects my amplifier auxiliary output with my iBook auxiliary port, except the black end is different. What does it connect to? And do the red and white ends go in the amplifier auxiliary output? I'm quite sure the auxiliary cable is connected as it was before I moved.
I will also get a ground wire tomorrow. I see where it should connect to the amplifier, but you will have to tell me what to do with the other end. There is a wire that looks like a wire still attached to the antenna that has a bound loop at one end. It might have come off of the antenna, or it might be the ground wire. Is it the ground wire? I'll need to know exactly what I need from the electronics store before I leave tomorrow, because it's quite a ways from here.
The amplifier is a Kenwood R-7Pro amplifier/tuner. I don't know what an always on B+12 or triggering +12 are. All wires and cables are connected as before except the antenna and the ground wire.
Thank you. I will also buy a new USB cable tomorrow. It is now 11:45 p.m. in Japan, so I will have to contact you after I have a ground wire and a new USB cable (and an always on B+12 and a triggering +12?) I will take a photo of the back of my amplifier with me to the electronics store and hope to return with everything I need.
I'm sorry, before my last response I hadn't seen the second comment and photos following Benimur's solution. And I should have said headphone port on my iBook, not the USB port. I am using the same baby phone plug that I used before the move, and it is identical to the one in the photo. White and red ends are connected to the corresponding auxiliary IN of the amplifier, and the black end to the headphone port of my iBook. The front panel of the amplifier is set to auxiliary. I do not use an external (rooftop) antenna.
So everything seems to be connected correctly. Do I need something from the electronics store? We don't seem to have gotten to the problem yet.
I have disconnected and reconnected the headphone cable. Other appliances work just fine from the same wall plug. AUX is selected on the front panel of the amplifier and shows AUX in the panel window. No sound.
Someone mentioned the possibility of a blown fuse. Do you mean household fuse or something in the amplifier? Everything in the home is working. The amplifier was working just before I moved. It was packed and moved by a professional mover. Do you have any other suggestions?
Could you give me an example of a 12v source? On the back of the amplifier there is a short cord connected to the "system control" IN. If I unplug it I can see that inside the terminal piece are three little prongs. The other end of the cord is the same. The other end is not connected to anything. If it was connected to anything before the move, it must have been to the CD player (which I no longer have), because it isn't long enough to reach anything else. What do I need to connect it to?
I don't understand "rca to rca input." The AM/FM receiver and amplifier are one unit. The headphone cable connects directly from my iBook headphone port to the amplifier white and red auxiliary input. My system consists of my iBook, connected by headphone cable to a receiver/amplifier (one unit), which is connected by speaker wires to Kenwood speakers. There used to be a CD player also connected to the amplifier, but I no longer have the CD player.
The entire system is Japan Domestic Model. It has never been used outside Japan or in any way modified.
I have moved the headphone cable to CD IN, TAPE IN, and MD IN and selected the corresponding front panel controls. Still no sound.
The speaker wires are the original ones from Kenwood. I see that they are Pioneer OFC Star Quad Speaker Cables. Each one is four cables color coded red, green, blue, and yellow. I'm quite sure the shop that sold me the system set up the speakers with pairs of red/green connecting to color coded red terminals on amplifier and speakers and with blue/yellow going to the black terminals. In any case, I have red connected to red and black to black.
Tomorrow I will buy a 1.5 volt battery and test the speakers, as you suggested.
Anything else I should try?
I have powered off the amp, unplugged it, plugged it back in while holding the On/Standby button. No sound.
How do I listen to music through the headphone jack on the amplifier? If my headphones are connected directly to the amplifier, how is the amplifier connected to the music source (my iBook)?
I'm not sure if the wire that looks like the wire on the antenna (not connected, but came with the system when I bought it) is the ground wire. My questions about this mateter are very basic. If one end of the ground wire is connected to GRND on the back of the amplifier, what do I connect the other end to?
Which is "the unit itself"? i'm sorry, I don't understand this comment at all.
There is no TAPE MON button. We might be talking about two different models. I'm sorry, I mistakenly originally posted under the care stereo section. I found this site by googling Kenwood amplifier help or something like that. The window under the car stereo model wouldn't let me enter an alternate model number. I was unfamiliar with the FixYa site.
My amplifier is a home stereo R-7PRO Integrated Amplifier/Tuner made bought, and used only in Japan. Since amplifier and speakers were all working just fine before I moved, I want to be sure everything is connected properly (I could easily overlook something) before calling in a repairman or replacing units.
On my amplifier I select AUX or TAPE or MD or FM, etc. by dialing to the choice that appears in a display window. There is no way to disable TAPE except to dial another selection, so far as I know. I have already tried moving the red and white ends of the Headphone cable to CD, MD, etc. on the back of the amplifier, as someone recommended. No sound.
I have unplugged the amplifier from the wall jack and plugged it in again while holding the ON/STANDBY button. And I have connected headphones to the front of the amplifier (cable is connecting iBook to amplifier AUX IN. Nothing. MUTE does not flash in the display window, just AUX. There is sound in the same headphones when connected directly to the headphones port on my iBook.
The same headphones jack fits tightly in both the iBook headphones port and in the front of the amplifier. I have Grado headphones. The Grado adapter is too large for the port on the front of the amplifier.
Thank you for your patience! The comments that provided specific instructions for testing my system were very useful. Some commentors need adjust their instruction to the (obviously naive) level of the customer. If a customer knows the industry terminology, she can probably figure out the problem herself. It now seems clear that the problem is internal to the amplifier.
×