Your link and photos were fine. If no issues with the title or Carfax I don't see why you can't get around $11,000 for it. The price guides should be in this neighborhood of pricing too. Ask higher to allow for negotiations but not too high as you want people to call. I would ask $12,000 but that's up to you. The lower mileage and 6 speed will be very appealing to some. I personally would fix the speaker. The less negativity about the car the easier it is to sell. GLWS!!
2001 Trans Am Convertible Red w/ taupe top (A4)
2007 Ford Mustang GT/CS Convertible White w/ black top (5 speed)
1974 AMC Matador X Red (3 speed auto)