Buying a new replacment wolfer


So the Baby Advent speaker repair did not work. Something is wrong more than the foam surround. The speaker has a guttural sound when the base is coming through. I ordered a replacement 6.5 inch speaker to replace it. The seller said this is a replacement for the baby advent. What specks should I look for.
joemug
The speaker I purchased specs are as follows. Thanks for any help

Power Handling (RMS)     50 Watts Power Handling (max)     85 Watts Impedance     8 ohms Frequency Response     60 to 8,000 Hz Sensitivity     85 dB 1W/1m Voice Coil Diameter     1"
Resonant Frequency (Fs)     75 Hz DC Resistance (Re)     7.5 ohms Voice Coil Inductance (Le)     1.11 mH Mechanical Q (Qms)     4.32 Electromagnetic Q (Qes)     1.34 Total Q (Qts)     1.02
Compliance Equivalent Volume (Vas)     1.24 ft.³ Maximum Linear Excursion (Xmax)     3 mm
Who was the supplier?

I would buy two, change them in both L & R so they are identical, save the existing good one for an emergency spare.