Rear speaker volume on 5.1 system is extremely low. Running Polk bookshelves in rear and HK 3600avr. Any ideas on why volume is so low? Thanks
Check the speaker wire connections are secure at each end with no loose wires. Also try swapping the speakers with the FL/FR speakers to ensure it's not a speaker issue.
That can depend a lot on your choice of recording. There are test discs with test signals in the back channels that are more reliable, and your AVR may also have a test signal you can use to evaluate the situation.
Have you tried either of these approaches?
Your AVR also has level trims for the back channels. Are you sure that they are properly adjusted?
Some AVRs also have sound field modes that have the effect of turning off the back channels. For example if you have a 2 channel source and enter a sound field bypass mode, there are only signals for the L & R channels and only they will make sound.
Is this a recent spontaneous change or are you just getting serious enough to try to nail this down right now for the holidays?
Check the SENSITIVITY rating of the front and rear speakers.
Are they the same or similar?
Each 3 db/watt decrease in sensitivity doubles the power needed to acheive a certain sound level.
If the front speakers have a higher sensitivity than the rear ones, that could be the answer to your question.
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