It sounds to me as if your phono cartridge may be bad.

You didn't by any chance connect the cables from the turntable to one of the regular line inputs on the amp, rather than the phono input jacks? That would cause something like that, because of the lack of PHONO equalization.

The turntable must be connected only to the PHONO inputs, unless you use an outboard Phono Preamp, in which case the output of the Phono Preamp WOULD need to be connected to one of the 5 line inputs, and NOT the phono inputs.

If you were using an outboard Phono Preamp, and connected its output to the phono inputs of the amplifier, you would be going through TWO RIAA Equalization circuits (one outboard and one within the amplifier), which would also royally screw up the sound. You only want to go through ONE RIAA EQ circuit.

Do you have a CD player?

You should connect a CD player to one of the amp inputs and see if the problem is there when listening to a CD.

If it is still there, then the speakers or amp are the problem.

If the CD sounds OK, then the problem is obviously the cartridge or PHONO preamp circuit of the amplifier.

Despite the title of your thread, it is unlikely to be a new problem with the speakers since it would mean a defect occurring simultaneously in each of them. More likely any of the components common to both channels.

the same thing happened the other day with my project turntable. It sounded like a little clump of dust was between the stylus and groove.I cleaned the stylus and switched to a different record, and the sound was back to normal.
It's below zero where I live and the air in the house is real dry, generating a lot of static. And the furnace blowing all the time creates a lot of dust. I don't know where the hell it comes from. The doors and windows are closed. How does it get in???
Last October I was in Key West for a few days and one thing that I noticed is there's no dust. Everything stays clean. Maybe the ocean winds don't have dirt and pollution. Even the cars stay clean. Wish I was back there now.

onehaqq01 wrote:

Hey all-

I have a (1) Music Hall MMF-2.2 Turntable, and a (2) Music Hall A15.2 Integrated AMP; and (3) Monitor Audio Silver 2s.

For some reason, all of a sudden, for most of my records, the voices sound a bit muffled (and the sound seems to have a lot of treble). I thought it had to do with my stylus needle but I cleaned that and still the voices are a bit muffled (and the sound seems like it is high in treble).

Does anyone know what the problem is or what I should do?

Any help is appreciated! Thanks in advance!

One other thing has occurred to me. You might have your cartridge/tone arm set to track too light. Make sure you have it set to track at NO LESS than 2 grams. Many arms and cartridge combinations will not track well at less than 2 grams, and what you describe could be due to mistracking.

Do not be concerned that you are using too much force. You would probably have to use at least twice that much force to damage a record, but tracking too light can definitely cause mistracking and record damage.