I always have liked Fender amps, and I then I saw, that they often are using Jensen speakers. I wanted to buy speaker because I thought it makes a lot of difference in sound, and it is cheaper than buying new amp.
I have a bad cheap combo amp, Fender Frontman 75w. I put this speaker in it, and also bought Harley Benton American pedal to use as preamp. Now, with the speaker and preamp, my rig sounds a lot better.
Replacing speaker was easy, and there are no problems with quality.