Results 1 to 4 of 4

Thread: Buzz in PR15Cs

  1. #1
    Junior Member
    Join Date
    Sep 2003
    Location
    Marshalltown, IA
    Posts
    1

    Buzz in PR15Cs

    1) I recently replaced the surrounds on the PR15Cs from my L222s. Now there is a very annoying buzz emanating from each of them during deep and sustained bass frequencies, the kind that are common on DVDs. The volume doesn't have to be very load to hear it. When driven by an audio signal generator, the noise occurs from about 65 Hz to below 20 Hz.

    I used a surround kit from Orange County Speaker and the whole job was easy and straight-forward. The only difference that I noticed between the original surrounds and the replacements was the width of the rolled edge. The original rolled edge fit snugly against the inner edge of the gasket, whereas the new edge falls short of the gasket by about a 1/16".

    I've inspected the speakers and can't find any obvious reason for the noise. The surrounds are glued tightly against the cone and appear to be tight against the surface of the basket. The spiders appear to be tight and in good condition.

    I’ve noticed that the surrounds even make a noise when I push on the cones with my fingers. It's kind of like the "scratching" sound that foam plastic makes when handled.

    Has anyone else encountered this problem, or does anyone have a suggestion for solving it?

    2) I’ve thought about replacing the PR15Cs with a port. It would be easy to fabricate a blank to fill the hole occupied by the speaker and put a port in the middle of it. However, I'm not sure how this would affect the sound and I'd need help to properly size it. Does this idea have any merit?

    Thanks,

    John

  2. #2
    SteveC
    Guest
    Hi John
    I had the same type of problem with a PR300, check the spider for cracks or tears around the edge.

    Steve

  3. #3
    SteveC
    Guest
    Hi John
    When you push on the cone to move the suspension do you feel a click?

    Steve

  4. #4
    Speakertown
    Guest
    I suspect it's foam noise. It may quiet down after
    breaking them in, Orange County should know what to do,
    I would talk to them.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. tuning passive radiators
    By dwolpoff in forum Lansing Product Technical Help
    Replies: 12
    Last Post: 10-13-2004, 12:06 PM
  2. 4401 Buzz
    By cary in forum Lansing Product Technical Help
    Replies: 4
    Last Post: 11-08-2003, 10:04 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •