Question about Kenwood VR-406 Receiver

1 Answer

One channel is out / no sound

MY YOUNG NEPHEW PLACED A 4 OHM SPEAKERINSTEAD OF AN 8 OHM SPEAKER. AFTER A SHORT TIME THE SPEAKER GOES DEAD. I LOOKED AT A SHEMATIC, THOUGHT IT MIGHT BE A POWER AMPLIFIER:IC 101(?), IC113(STK 442-090). WHAT IS THE IC101? ANY SUGGESTIONS? THANK YOU BP

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

Here you go.


IC101 STK412-020A HYBRID IC

Yvan

Posted on Mar 10, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My amp keeps going off after having been on for about half an hour. The top of the unit feels very hot, could it be overheating? If so, can it be fixed? Regards,


If the top is very hot, I would check the impedance on the speakers to see if any are shorted....one of them may be shorted or in a low ohm state.
Use an ohm meter and look at the speaker ratings.
If you have an 8 or 4 ohm speaker and it's reading 1 or 2 ohms, that's the problem.
Check at the speaker^s connectors if possible with the unit off but speaker connected.
If you have a dead short on any of them, disconnect and reconnect the leads at both the speaker end and the amp end.
If none are a dead short, disconnect the speakers and measure again.
the speakers should read whatever their rated impedance is.

Apr 24, 2011 | Onkyo TX-SR605 Receiver

2 Answers

Speaker compatibility ( Just got this new reciever with 120 volts power requirement of the receiver, but in the philippines voltage standard supply is 220. can i use 110 voltage supply instead? and I dnt...


The most likely answer is no. Unless the power transformer is of the multi tap type and has a voltage selector window on the back panel... Most speakers today have an impedance of 8 ohms. The impedance is all you need to worry about when matching speakers. You can fit 8 ohm speakers to a 4 ohm system, but you cannot fit 4 ohm speakers to an 8 ohm system. It would overload your oputput stages and cause them to fail. It's best to match 4 ohm with 4 ohm, 8 ohm with 8 ohms.etc.

Mar 19, 2010 | Audio & Video Receivers

1 Answer

Overloads with volume a third od the way up,i have 2 12 inch cerwin vegas hooked to it


fan_of_tony,
There is not much info in your question to properly answer it but here are a few things.

1) The VSX-D307 is a home receiver that is rated for no less than a 4 ohm load. If you have two 12" 4 ohm CV subs on the same channel and they are in parallel, that would create a 1.7 ohm load which would easily cause the problem.

2) If you have one on each channel connected along with speakers that are for you mids and highs, the way they are connected could be reducing the resistance load the amp will see which would easily cause the problem.

3) If you have one on each channel and no other speakers the problem would be simply that your speakers can use more power than the amp can produce. Thus you are able to raise the volume of the amp passed it's maximum output which would cause the amp to clip and the amp will go into overload protection.

4) Your receiver has an 8 ohm rated amp. Which means it can run at 4 ohms but the amp will produce more power at lower volumes on the knob setting and will max out at lower levels than if you were using a 8 ohm speakers.

In short, CV's can use a lot of power and your receiver, regardless of advertised power levels, cannot give the speakers what you are looking for in sound levels. Buy a larger dedicated amp for the CV's as the clipping from your Pioneer receiver is doing damage to your CV's. Your speaker's can hear the clipping before your ears can so damage will start to occur before your ears can hear the clipping.

-Chris

Jan 20, 2010 | Pioneer VSX-D307 Receiver

1 Answer

How to turn off 'Protect"?


http://esupport.sony.com/US/perl/model-home.pl?mdl=STRDE597&LOC=3
However, If you still have the problem, there is likely damage in the receiver that needs to be corrected. I have a few other posts on this for this receiver. Make sure you don't have shorted speakers connected. One at a time, disconnect your speakers and check them with an ohm meter. If they read 8 ohms, they are electrically ok. Reconnect them to the receiver. If the read 4 or less, they are either of the wrong type or are partially or fully shorted and should be replaced with known good 8 ohm rated speakers with 100 watt program ratings.
Also, you can try using the reset to see if this provides relief. Using the front panel controls, power off. The holding down the 2 channel button, power on. You'll see a reset message on the display. If after this procedure it goes right back into protect mode, the receiver needs professional attention. Best guess is shorted outputs or other damaged components in the power amp section due to wrong type speakers connected or extended high heat operation.

Sep 11, 2009 | Sony STR-DE597 Receiver

1 Answer

I turn it on and it says protect and wont play.


That model of receiver goes into protect mode when there is really
low
resistance or a short on your speakers/wires. It does it to protect the
final drivers in your amp. Does it do the same thing with all of your
speakers disconnected? If it doesn't then you might have a problem with
one of your speakers or wires. Check your wires for shorts in them
first. That may be the only problem. That model is designed for 8 ohm
speakers, but you can go down two 6 ohms safely. I have a STR -D865 that

has been running 6 ohm speakers safely for almost 3 years now. A way to
check your speakers out is to take an ohm-meter across the terminals on
them(with the receiver unhooked). They should read anywhere between 8
and 4 ohms. Check with the manual on your speakers to see if they
correspond. If the resistance is really low, you may have a short in
that speaker. it is also possible that if they are 4 ohm speakers, you
could have damaged the drivers in your receiver. I know the model above
mine, (the 965) has a 4-8 ohm speaker selection switch on the back. The
lower models were not designed to run 4 ohm speakers. Hopefully this has

been of some help.

Brad

Jul 18, 2009 | Sony STR-D565 Receiver

2 Answers

''protect'' flashed continuously -worked sporadically- seems dead


That model of receiver goes into protect mode when there is really
low
resistance or a short on your speakers/wires. It does it to protect the
final drivers in your amp. Does it do the same thing with all of your
speakers disconnected? If it doesn't then you might have a problem with
one of your speakers or wires. Check your wires for shorts in them
first. That may be the only problem. That model is designed for 8 ohm
speakers, but you can go down two 6 ohms safely. I have a STR -D865 that

has been running 6 ohm speakers safely for almost 3 years now. A way to
check your speakers out is to take an ohm-meter across the terminals on
them(with the receiver unhooked). They should read anywhere between 8
and 4 ohms. Check with the manual on your speakers to see if they
correspond. If the resistance is really low, you may have a short in
that speaker. it is also possible that if they are 4 ohm speakers, you
could have damaged the drivers in your receiver. I know the model above
mine, (the 965) has a 4-8 ohm speaker selection switch on the back. The
lower models were not designed to run 4 ohm speakers. Hopefully this has

been of some help.

Brad / Luisa_K - usenet poster

Apr 03, 2009 | Sony STR-D565 Receiver

2 Answers

Sony STR-DB940 Receiver Speaker Impedance Question


Whats the rating on the Plasma? How many watts at 4 ohms? If the plasma is rated 100 w at 8 ohm... hanging a 3.4 ohm load would put a lot of strain on the plasma's output amp. At 3.4 ohm the amp would be trying to delive close to 200 watts at full power. But it depends on how hot you normally run the volumn. Remember an amplifier output is AC volts. 1 ohm of resistance is close to a dead short. The amplifier would have to work its *** off to supply that type of power and would probably burn the output op-amps. If the outputs burn & it pumps any DC current through the speaker wire..the speakers would be toast...if not catch on fire. Try to keep the speaker load at or very cloe to the plasma's output load rating. Also if the plasma doesn't state it will handle loads down to 2 ohms...It probably won't.
Gene

Mar 02, 2009 | Sony STR-DB940 Receiver

1 Answer

Bought some replacement speakers and the reciever seems to get ver hot!


Hello! Yes, you need to worry when a Sony gets hot!! You probably have replaced factory 8 ohm speakers with 4 ohm speakers. Look on the back of your new speakers and see what they are. Then look at the rear of your receiver by the speaker terminals and there will be a sentence like "8 Ohm minimum per channel". If your Sony says " 8 ohms " you need to use 8 ohm speakers.
Also, are you a using low level signal ( audio out ) to drive your sub or are you using high level ( speaker line )??? I'd use low level. Good luck!!

barneyluc

Oct 09, 2008 | Sony STR-DE635 Receiver

1 Answer

Trying to hook up jbl sr4732 speakers the highs are to loud compaird to the bass or lows. im only using a onkio with a 100 watt per speaker.


These JBL speakers are not made for a home stereo reciever. It could be part of the problem.

I do know that they have a high frequency input and a full range input on each speaker.

I am going to guess that maybe you have them connected to the high frequency input.

Are you using 1/4 inch jacks connecting to the input of the speakers?

I don't remember these speakers having a input for wires.

You may have another issue using these speakers with that reciever.

The JBL speakers are 4 ohms each, it is very likely that the onkyo requires 8 ohm speakers.

Look on the back of the Onkyo where the speaker jacks are at and see if it says anything about the minimum impeadance.

The impeadance is the ohms. Most home recievers are not designed for anything less than 8 ohms. Some are, but most are not.

Using 4 ohm speakers on a system that requires 8 ohm speakers can cause damage to the reciever. Mostly at higher volume levels, it will cause the reciever to overheat and shut off, maybe short out a channel. It pulls 2 times the amount of current thru the output transistors as 8 ohm speakers.

Let me know if this helps you or if you need more help.

Jun 18, 2008 | Audio & Video Receivers

6 Answers

Multiple speakers in same outlet


How this reciever is set up is there are left and right A and left and right B Only one 8 ohm speaker should be attached per outlet. if you exceed that your driving the channel at a much lower resistance then the units designed for and the channel will burn up.. Oh it might last a short time but bet your last dollar it will burn up the channel if you over load it. Please dont forget to rate this.

Oct 15, 2006 | Pioneer VSX-454 Receiver

Not finding what you are looking for?
Kenwood VR-406 Receiver Logo

Related Topics:

149 people viewed this question

Ask a Question

Usually answered in minutes!

Top Kenwood Audio & Video Receivers Experts

 Elex
Elex

Level 2 Expert

49 Answers

ask_not

Level 1 Expert

28 Answers

Fbcgilly

Level 1 Expert

13 Answers

Are you a Kenwood Audio and Video Receiver Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...