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This is a great shout, I'll try this first.
It's not a large room so may need to think more about placement.It's the second of the ground floor rooms of a standard victoriana terrace. Speakers currently wall mounted in each alcove either side of the chimney breast, TT sits on wall mounted shelf about 60cm below the left speaker. Could easily be getting some sort of resonance in that corner.
Stylus is new, as is one of the records which I've observed the effect, so less likely.
If speaket/TT placement doesn't change anything, I'll look in more detail at cart settings on the TT before trying a new cart.
Thanks all for contributions, shout if there's a decent t4p cart you'd recommend!
Tall_Tom-
I would also check tracking force before spending any money. Increase it by turning the counterweight towards the pivot and see if that helps. I’ve had that issue before with too little weight on the needle.
If it works then buy a digital scale and set it correctly to spec.
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Some info on the deck here:
https://www.gramophone.co.uk/features/article/review-technics-sl-7-turntableYou can adjust tracking force.
Seems there are some Audio technica carts out there including a high output moving coil that should work with a MM phono stage but check the suggested loading for the cart you have or buy to the rating of your phono stage. -
may also be a consideration if you are running the digital input over Bluetooth, that'll be compressed which may sound a bit easier out of the audio pro speakers.
Stevethecoffee
Mr_Smyth
ChasnotRobert
I've experienced similar when I changed cartridge type and I didn't have the settings on the phono stage dialed in correctly. However, my phono stage has a bunch of DIP switches (to adjust for Cartridge Loading Capacitance, Cartridge Load Resistance and Gain) that the Spartan 5 seems to lack, so the Spartan 5 should just 'work' correctly with any MM cartridge.
Are the speakers located near to the turntable? They could be causing feedback by vibrating the lid of the turntable if they are too close. In fact, that could be even more of a problem with the SL-7, where the linear tracking mechanism is built-in to the lid.