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Polk Audio RM6750

post #1 of 5
Thread Starter 
I'm reading a bunch of reviews and I'm hearing that people are getting nice mids/highs. I notice the bass quality is very nice with these speakers, but the mid-range is VERY lacking, muddy, underwater like mid-range production.

I'm wondering if I just set them up wrong? I've tried resetting the receiver and did get an improvement. I've also been using HDMI as well instead of the Forte for audio production...and again, sounded better. It is also sitting at 98KHz in the sound settings on windows. Got a bit better sound from using the loudness equalizer setting for games but music seemed lacking on some songs so I turned it off.

I noticed the center, left, and right speakers were a little quieter so I upped their dB on the receiver. Rear speakers awkwardly sound loud.

If it has anything to do with the wires, would using banana plugs help out in any way? Maybe improve the connection if that is the issue?

Any ideas would be very helpful.
post #2 of 5
Have you double checked the speaker cables to ensure the polarity is in the correct connector?As it sounds like that could be the problem,as in the wrong polarity they will basicly revert to mono which can lead to sound you described.
post #3 of 5
Thread Starter 
Quote:
Originally Posted by crossy82 View Post
Have you double checked the speaker cables to ensure the polarity is in the correct connector?As it sounds like that could be the problem,as in the wrong polarity they will basicly revert to mono which can lead to sound you described.
They do sound like the channels are distinguishable from each other. A right hand sounds sound as if it is from the right, the left hand sounds sound as if they are to the left. Maybe it is the wiring.

Do you banana plugs would be a good to hook speakers up? I find it is hard to get the audio cables to fit nicely in the speakers.
post #4 of 5
If they are not fitting well then yes i would defo get better plugs.Also did these speakers come pre-installed in cabinets?Could be a crossover issue but if they were factory installed thats unlikely.You could try a different amplifier,its amazing the difference you can get from various amplifiers.What amplifier are you currently running?
post #5 of 5
Thread Starter 
Quote:
Originally Posted by crossy82 View Post
If they are not fitting well then yes i would defo get better plugs.Also did these speakers come pre-installed in cabinets?Could be a crossover issue but if they were factory installed thats unlikely.You could try a different amplifier,its amazing the difference you can get from various amplifiers.What amplifier are you currently running?
It's just whatever is in the receiver. It's a Pioneer VSX520-K.

Alright, I'm going to hopefully pick up some banana plugs this weekend.

I got a response from the polk audio forums and the guy said that these speakers have a self contained bypass at 150 Hz. I have the crossover at 100 Hz right now on the receiver. I'm going to try and up that to 150.
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