smwdrtwin
Buy this and just play the ’Pink Noise" track over and over, be careful of the others, they "can" damage your amp/speakers
https://www.ebay.com/itm/Audio-Test-Disc-Freq-Sweeps-Pink-Noise-Phase-Audiophile-Studio/184196815012?hash=item2ae2fc58a4:g:bwMAAOxyYYlRxTYV
Cheers George
Buy this and just play the ’Pink Noise" track over and over, be careful of the others, they "can" damage your amp/speakers
https://www.ebay.com/itm/Audio-Test-Disc-Freq-Sweeps-Pink-Noise-Phase-Audiophile-Studio/184196815012?hash=item2ae2fc58a4:g:bwMAAOxyYYlRxTYV
Cheers George