Jump to content
The Klipsch Audio Community
Sign in to follow this  
Joepie

Fabulous RF-7 modification!

Recommended Posts

Use cord weatherstripping from Home Depot at $5 a roll 8 beads wide x 90ft x 1/8" thick. Here is the link.

http://www.homedepot.com/s/cord%2520weatherstripping?NCNI-5

Not caustic easy to form to woofer and horn frames. Can be peeled away if necessary. Use this on a refoam pair of 8" woofers for a friend and he told me the bass sounded better (without knowing why).

Share this post


Link to post
Share on other sites

I used that stuff on an RB-75, it changed the sound enough that now I have to either remove it or do the other one of the pair. I'm doing the other one.

Share this post


Link to post
Share on other sites

Has anybody tried Silicon Seal (not latex)? It seems like a quick and easy solution to damping the plastic ringing.

077027000252lg.jpg

Share this post


Link to post
Share on other sites

Sorry for rehashing this thread but this is the video that got me onto the Bitumex mod. I was wondering if there is somebody on the forum who has done this mod. My main concern is can this Bitumex stuff be removed again if the effect is not to my liking?

Share this post


Link to post
Share on other sites

I'm having a rough time with this. Surely Klipsch would take this into account during the design testing phases.

Share this post


Link to post
Share on other sites

I'm having a rough time with this. Surely Klipsch would take this into account during the design testing phases.

Hehe so am I, that's why I'd like to make sure I can go back to stock. Bitumex costs a couple bucks so it's not expensive to give it a shot. But I don't expect much from it to be honest especially relative to an actual mod e.g. that kind you offer. :)

Share this post


Link to post
Share on other sites

The harshness comes from the cones, there is some breakup and ringing around the crossover region. The woofers were modified in the later reference speakers to deal with it. Some don't notice it, it drives others nuts. When it's gone, it's really noticeable.

http://infinitysystems.com/tl_files/content_resources/infinity/white%20papers/cmmd.pdf

When I put the foam on the inside of my woofer basket spokes is when mine disappeared.

Share this post


Link to post
Share on other sites

Old thread, but I'd like to try this mod on my RF-5s.  ANyone know where I can buy some self adhesive Bitumex in the USA?  

Share this post


Link to post
Share on other sites
On ‎6‎/‎15‎/‎2014 at 9:01 AM, Deang said:

I'm having a rough time with this. Surely Klipsch would take this into account during the design testing phases.

Looks like Klipsch has fixed this issue with the RF-III's, maybe there is something to it? At 1:54 he says the rubber makes the horn inert?

 

 

Share this post


Link to post
Share on other sites

Doncha just love it when a plan comes torether!  I did not know the plastic RF horns were susceptible to ringing.  Good sleuthing!  We've done similar things to the other models, too.  ;)  

 

 

Share this post


Link to post
Share on other sites
On 4/6/2014 at 11:50 PM, wvu80 said:

Has anybody tried Silicon Seal (not latex)? It seems like a quick and easy solution to damping the plastic ringing.

077027000252lg.jpg

I know this is an old thread... but have you tried this stuff ?

Share this post


Link to post
Share on other sites
26 minutes ago, whatever55 said:

I know this is an old thread... but have you tried this stuff ?

Yes, and it works great.  It certainly deadens the "knuckle rap" test and makes the horn resonance lower.  I thought it helped to get rid of some HF harshness.

 

The proper amount for me was one 11 oz tube per horn.  Use the pure silicon caulk which is clear because it stays flexible forever.  The latex caulk gets brittle over time.  $5 per tube.  Be sure and put it into the horn throat.

 

Here is the pure silicon caulk applied asymmetrically to my CF-4 horn.  It takes 24 hours to cure, then re-install into the cab.

 

IMG_3776.JPG.7bf2f63a3ae39e3ab332a4ceda730f9f.JPG

  • Like 1

Share this post


Link to post
Share on other sites
On 12/26/2019 at 10:24 AM, wvu80 said:

Be sure and put it into the horn throat.

Can you elaborate on this? 

Share this post


Link to post
Share on other sites
On 6/15/2014 at 12:01 PM, Deang said:

I'm having a rough time with this. Surely Klipsch would take this into account during the design testing phases.

 

You would think so, but apparently not!  Complaints about harshness of these tweeters are reported by so many, it's obviously an issue.  When I got mine, the first time I played them at a serious volume, it was noticeable right away, which is why I found this thread after a google search for "Klipsch RF-7 mods."

 

I called a friend who mentioned that warmer sounding amplifiers, especially tubes, sound much better on these.   I saw a youtube video of an even lower tier product line (RP-8000F) that had a huge suckout at the crossover region so there's a lot that can be missed for the lower tier product lines (see THIS VIDEO).

 

.

Share this post


Link to post
Share on other sites

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.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

×
×
  • Create New...