Hello
I have a problem of uneven sound in my speakers
The amp is : Lepai TA2020+ 2X20watt.
The speaker are : JBL CS-5C Component
Frequency Response 70Hz-20kHz
Nominal Impedance 4 ohms
Power Handling (RMS) 40W
Sensitivity (2.83V/1m) 92dB
Power Handling (Peak) 120W
Before mounting the speakers , i connected them to the Amplifier via a 20M cable each ( exactly ) - and the sound was very very good!
__________________________________________________________
Now i have mounted the speakers and connected the wires ( cut them according to the new distance ) and the result is:
Right speaker connected via 22M cable
Left speaker connected via 15M cable
The problem is that on my LEFT speaker i hear stronger then the RIGHT one by at least 15%
What can i do to solve it?
Thanks!
I have a problem of uneven sound in my speakers
The amp is : Lepai TA2020+ 2X20watt.
The speaker are : JBL CS-5C Component
Frequency Response 70Hz-20kHz
Nominal Impedance 4 ohms
Power Handling (RMS) 40W
Sensitivity (2.83V/1m) 92dB
Power Handling (Peak) 120W
Before mounting the speakers , i connected them to the Amplifier via a 20M cable each ( exactly ) - and the sound was very very good!
__________________________________________________________
Now i have mounted the speakers and connected the wires ( cut them according to the new distance ) and the result is:
Right speaker connected via 22M cable
Left speaker connected via 15M cable
The problem is that on my LEFT speaker i hear stronger then the RIGHT one by at least 15%
What can i do to solve it?
Thanks!
Attachments
1. Use thick cable.
2. Use equal length for both left and right.
3. Perhaps do this first. Do a quick check using a test tone between 100 to 400 hz and a DVM and set the right channel to 1.00 Vrms and then compare your reading on the Left channel.
Be interesting to see the result of that test actually
Edit... 1.00 Vrms as measured at the speaker end of the cable.
2. Use equal length for both left and right.
3. Perhaps do this first. Do a quick check using a test tone between 100 to 400 hz and a DVM and set the right channel to 1.00 Vrms and then compare your reading on the Left channel.
Be interesting to see the result of that test actually
Edit... 1.00 Vrms as measured at the speaker end of the cable.
Have you measured the DC resistance of the speaker cables?
Short one end and measure the loop resistance for each channel.
I've just noticed that your description differs from the diagram. Is the stronger side the one with the shorter cable?
If all else fails you could use a series resistor equal to the difference between the two cables but it is not an ideal solution.
Short one end and measure the loop resistance for each channel.
I've just noticed that your description differs from the diagram. Is the stronger side the one with the shorter cable?
If all else fails you could use a series resistor equal to the difference between the two cables but it is not an ideal solution.
Last edited:
well
Sorry that the Picture did not match.
the Correct distance is :
Right speaker connected via 22M cable
Left speaker connected via 15M cable
LEFT speaker is louder ( more treble ,more bass )
What are the chances that replacing the Longer cable with a 2.5mm Cable instead of a 1.5 will solve the problem?
Sorry that the Picture did not match.
the Correct distance is :
Right speaker connected via 22M cable
Left speaker connected via 15M cable
LEFT speaker is louder ( more treble ,more bass )
What are the chances that replacing the Longer cable with a 2.5mm Cable instead of a 1.5 will solve the problem?
It might alter things but its not the way to go about it really.
You need to know and be sure what is happening, and that means literally 30 seconds measuring the difference in voltage appearing at the speakers.
Adding a small resistor (0.1, 0.22 ohm etc) in series with the shorter cable might achieve a better result. The correct method is to equalise the lengths, even if it means folding some out of the way and admittedly you have a big discrepancy in lengths.
Or you could fractionally alter the gain in the amp.
You need to know and be sure what is happening, and that means literally 30 seconds measuring the difference in voltage appearing at the speakers.
Adding a small resistor (0.1, 0.22 ohm etc) in series with the shorter cable might achieve a better result. The correct method is to equalise the lengths, even if it means folding some out of the way and admittedly you have a big discrepancy in lengths.
Or you could fractionally alter the gain in the amp.
Ohhh K.. Likely not what you want to hear. But 😉 after a couple of years 'fooling' with these abominations.
I Respectfully suggest you grab the thing firmly in your hands, walk it over to your trash bin and drop it in...Now!
Before you waste another minute of your finite number of life hours with it.
I Respectfully suggest you grab the thing firmly in your hands, walk it over to your trash bin and drop it in...Now!
Before you waste another minute of your finite number of life hours with it.
I found that the pot was horribly unbalanced on mine at low volume settings. Try reducing the volume of your source (if you can) and turn the amp volume up to at least 1/3.
I bought one of these a while ago as a little test amplifier. The interior build quality was absolutely SHOCKING - I returned it and didn't even ask for a refund. At a guess yours has got some poor connections inside it somewhere.
Try using some 1.5mm T&E lighting ring main cable to the speakers, that will iron out any problems with mis-matching due to cables.
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