I was wondering if someone could help me out...

EpicName · 6th January 2013, 05:09 PM

This may not be an appropriate question to ask here, but I thought that someone at this forum may have an answer for me.

My wife wants a stereo for our kitchen and I was at a thrift shop yesterday and saw a kenwood KR-A48 and thought it would be a cheap solution. I have two 8ohm 100W KS-401HT rear surround speakers I was going to use with it mounted on the wall. I have never used them but I'm sure they work...

So my problem is that I hooked up the receiver to an AM antenna and some random HTIAB speaker to see if it worked at the shop and I was able to get a station and sound worked out of the L and R for speakers A and B. Then I get home with it and I can't get any sound at all. I tried all the inputs and the radio. The headphone jack works with the volume dial for all the inputs. I'm not sure if it's amplified or just applies resistance to the signal.

Does anyone have any quick suggestions to what I can do to make it work?

Mooly · 6th January 2013, 05:22 PM

I can't find anything under that model number on google or bing !

Is it a normal receiver with normal speaker sockets ? Picture of it maybe ?

If headphones work then thats usually a sign most of the circuitry is OK. Question is whether it has a normal output stage or not, and not finding anything on the model I wouldn't like to guess.

EpicName · 6th January 2013, 05:37 PM

Sorry! it's KR-A46, not 48.

Here are some pictures.
https://docs.google.com/folder/d/0B1...BWM2JzNnM/edit

All the capacitors look fine and I couldn't see anything out of place that would cause a short. The fuse also looks fine to me. To clarify, when I get no noise, I mean not even hissing.

pacificblue · 6th January 2013, 06:08 PM

Did you activate the speakers with the corresponding pushbuttons A or B?

Even if it is working as is, it would be a good idea to clean the dust from the innards.

Mooly · 6th January 2013, 06:28 PM

As above really re the speaker selection.

I would guess that this uses the main power amps for the headphone feed so I would say basically all working.

EpicName · 7th January 2013, 01:50 AM

Yes I pressed the push buttons for both a and b. I am really at a loss as to what could be wrong.

gmphadte · 7th January 2013, 03:35 AM

Most probably, the headphone socket has a dirty/ open contact. Just try pushing in and out, the headhone jack.

Gajanan Phadte

Andrew Eckhardt · 7th January 2013, 03:41 AM

Some receivers series the A and B speakers, so if there are actually no B speakers, you will get nothing if you switch A+B.

Mooly · 7th January 2013, 06:38 AM

From another angle... are you 100% sure your two speakers are good ?

6th January 2013, 05:09 PM	#1
EpicName diyAudio Member Join Date: Jan 2013	I was wondering if someone could help me out... This may not be an appropriate question to ask here, but I thought that someone at this forum may have an answer for me. My wife wants a stereo for our kitchen and I was at a thrift shop yesterday and saw a kenwood KR-A48 and thought it would be a cheap solution. I have two 8ohm 100W KS-401HT rear surround speakers I was going to use with it mounted on the wall. I have never used them but I'm sure they work... So my problem is that I hooked up the receiver to an AM antenna and some random HTIAB speaker to see if it worked at the shop and I was able to get a station and sound worked out of the L and R for speakers A and B. Then I get home with it and I can't get any sound at all. I tried all the inputs and the radio. The headphone jack works with the volume dial for all the inputs. I'm not sure if it's amplified or just applies resistance to the signal. Does anyone have any quick suggestions to what I can do to make it work?

6th January 2013, 05:22 PM	#2
Mooly diyAudio Moderator Join Date: Sep 2007	I can't find anything under that model number on google or bing ! Is it a normal receiver with normal speaker sockets ? Picture of it maybe ? If headphones work then thats usually a sign most of the circuitry is OK. Question is whether it has a normal output stage or not, and not finding anything on the model I wouldn't like to guess. __________________ ------------------------------------------------------- *A simulation free zone.* *Design it, build it, test it.*

6th January 2013, 06:08 PM	#4
pacificblue diyAudio Member Join Date: May 2008	Did you activate the speakers with the corresponding pushbuttons A or B? Even if it is working as is, it would be a good idea to clean the dust from the innards. __________________ If you've always done it like that, then it's probably wrong. (Henry Ford)

6th January 2013, 06:28 PM	#5
Mooly diyAudio Moderator Join Date: Sep 2007	As above really re the speaker selection. I would guess that this uses the main power amps for the headphone feed so I would say basically all working. __________________ ------------------------------------------------------- *A simulation free zone.* *Design it, build it, test it.*

7th January 2013, 06:38 AM	#9
Mooly diyAudio Moderator Join Date: Sep 2007	From another angle... are you 100% sure your two speakers are good ? __________________ ------------------------------------------------------- *A simulation free zone.* *Design it, build it, test it.*


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6th January 2013, 05:37 PM	#3
EpicName diyAudio Member Join Date: Jan 2013	Sorry! it's KR-A46, not 48. Here are some pictures. https://docs.google.com/folder/d/0B1...BWM2JzNnM/edit All the capacitors look fine and I couldn't see anything out of place that would cause a short. The fuse also looks fine to me. To clarify, when I get no noise, I mean not even hissing.

7th January 2013, 01:50 AM	#6
EpicName diyAudio Member Join Date: Jan 2013	Yes I pressed the push buttons for both a and b. I am really at a loss as to what could be wrong.

7th January 2013, 03:35 AM	#7
gmphadte diyAudio Member Join Date: Jul 2003 Location: Dona paula, Goa	Most probably, the headphone socket has a dirty/ open contact. Just try pushing in and out, the headhone jack. Gajanan Phadte

7th January 2013, 03:41 AM	#8
Andrew Eckhardt diyAudio Member Join Date: Nov 2005 Location: PA	Some receivers series the A and B speakers, so if there are actually no B speakers, you will get nothing if you switch A+B.

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