kg4guy Posted April 28, 2009 Share Posted April 28, 2009 I put new diaphrams in a pair of Altec 806's and one sounds awesome and the other sounds muffled? Any idea whats up I switched them from side to side to make sure it wasn't a problem with the crossover and it was the same. Quote Link to comment Share on other sites More sharing options...
JL Sargent Posted April 28, 2009 Share Posted April 28, 2009 I would take it back apart and inspect everything. Did you have any trouble installing it? Quote Link to comment Share on other sites More sharing options...
kg4guy Posted April 28, 2009 Author Share Posted April 28, 2009 I did all that and I did notice the diaphram wasn't all the way flush with the driver both times until I screwed it down so I am assuming that it may be bad? Quote Link to comment Share on other sites More sharing options...
JL Sargent Posted April 28, 2009 Share Posted April 28, 2009 That doesn't sound right. Maybe one of our resident experts will chime in. A good picture is worth a thousand words. Quote Link to comment Share on other sites More sharing options...
kg4guy Posted April 28, 2009 Author Share Posted April 28, 2009 After the fourth time taking apart and looking over what I did I fixed it.These drivers have loading caps and there is only one way to put the diaphram in because only 3 of the holes are deep enough for the loading cap screws so I put the diaphram in another position and then used washers on the loading cap screws so they would fit in the diaphram screw holes.The diaphram fit more flush this way and so far sounds 95 % better.I would post photos however my camera is messed up. Thanks Quote Link to comment Share on other sites More sharing options...
JL Sargent Posted April 29, 2009 Share Posted April 29, 2009 Good deal. Glad it worked out for you. Did you end up modifying the 511b horns? How did that work out? Quote Link to comment Share on other sites More sharing options...
kg4guy Posted April 29, 2009 Author Share Posted April 29, 2009 I didn't I sold the 288's and got 2 pair of 806-8a's as I didn't want to wreck a nice pair of 511b's trying to modify them and the 806's are a big improvement over the K-55's so I am happy.I need to do some crossover mods as I am running them with a type A with 12uf Hovland caps and a 2.2 Mundorf Supremes. I will use a 10.5 cap and a 1.2 cap that should bring the crossover up to 500hz + and the highend up around 6000hz. Thanks Quote Link to comment Share on other sites More sharing options...
JL Sargent Posted April 29, 2009 Share Posted April 29, 2009 OK, cool. I suspect you also had to play with the attenuation quite a bit going from not only different drivers but also dropping from 16 to 8 ohms on the squawker. Quote Link to comment Share on other sites More sharing options...
kg4guy Posted April 29, 2009 Author Share Posted April 29, 2009 I moved the squawker from tap 4 to 3.They sound nice however I wanted to bring the crossover point up between 500-600 Hz as the power handling of the 806's below 500Hz aren't as good as the K-55's[*-)] Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.