Jump to content
The Klipsch Audio Community
jjptkd

Ultimate Chorus II Upgrade

Recommended Posts

4 hours ago, absolve2525 said:

Cool and cheap adapters! I ordered a pair to have around. 

 

Not sure if it was clear or not by the description but i had to drill out the 4 holes myself to make these work, they only came with 2 and 3 bolt patterns. Fairly easy to do but wanted to make sure you were aware. 

Share this post


Link to post
Share on other sites

Well I finally did this mod last night.

 

Bob was trying to convince me these wouldn't fit in the Chorus II. I had no issues installing them with the adapters I purchased from eBay. Here are some of the pictures of the install:

 

(Also, all new gasket tape was installed on drivers. The weak cheap gaskets were aged and junk)

 

 

thumbnail_IMG_6590.jpg

thumbnail_IMG_6591.jpg

thumbnail_IMG_6598.jpg

thumbnail_IMG_6597.jpg

thumbnail_IMG_6600.jpg

thumbnail_IMG_6603.jpg

  • Like 1

Share this post


Link to post
Share on other sites

Man, that is a tight fit! Did you notice an improvement in sound quality?

Share this post


Link to post
Share on other sites
On 2/9/2018 at 5:39 PM, jjptkd said:

Ok so I got my cheapy plastic adapters and got them fitted in about 10 minutes, turned out better than I hoped. I really like these, first off because they are cheap and secondly they seem to be made out of the same material only a lot thicker than the horns. Also, when you screw the k-55 into place the end of the driver sits pretty much flush with the edge so no big gaps. I've got these installed and have been playing some tunes, they sound great. All totaled with a trip to the hardware store for screws and washers and what not adapters cost about $10.

 

 

20180208_153831 (640x640).jpg

20180208_153731 (640x640).jpg

20180209_131105 (640x604).jpg

20180208_154121 (640x640).jpg

20180209_125308 (640x482).jpg

what is the brand of this  white stuff you used  on the rear of the horn to seal the horn with the cab ----------

Share this post


Link to post
Share on other sites

some folks with stock mid motors and large amplifiers can get the rear baffles to vibrate on the mid motors when playing loud heavy bass. Depends on your situation and average levels of playback if you get vibration then you might want to install a compressible pad between the back of the motor and the rear baffle. This will be be variable as it will depend on the stiffness of your baffle mdf some is harder some is softer it's all over the place and can vary dramatically from run to run when it is made. This explains why some have issues and others not. The rear baffle on a Chorus and Chorus ll is a large totally unbraced one which really needs to be properly braced.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Share this post


Link to post
Share on other sites
5 hours ago, Randyh said:

what is the brand of this  white stuff you used  on the rear of the horn to seal the horn with the cab ----------

It's just cheap gasket tape from the hardware store 

  • Like 1

Share this post


Link to post
Share on other sites
4 minutes ago, jjptkd said:

It's just cheap gasket tape from the hardware store 

is it important to add -on gasket tape , behind all horns

Share this post


Link to post
Share on other sites
10 minutes ago, Randyh said:

is it important to add -on gasket tape , behind all horns

I put it everywhere on the horns, woofers, passives and terminal cups it's cheap and provides a perfect air tight seal 

  • Like 1

Share this post


Link to post
Share on other sites

Good enough is good enough, and "perfect airtight" reaches past that point.

  • Haha 1

Share this post


Link to post
Share on other sites
36 minutes ago, jjptkd said:

I put it everywhere on the horns, woofers, passives and terminal cups it's cheap and provides a perfect air tight seal 

I think this is definitely a good advice , and tx for mentionning it ,  it makes a lot of sense

  • Like 1

Share this post


Link to post
Share on other sites
On ‎2‎/‎14‎/‎2020 at 9:19 AM, Gorm said:

Well I finally did this mod last night.

 

 I had no issues installing them with the adapters I purchased from eBay. Here are some of the pictures of the install:

 

(Also, all new gasket tape was installed on drivers. The weak cheap gaskets were aged and junk)

 

 

thumbnail_IMG_6590.jpg

 

 

 

Well, what do you think? I believe you're only one a few to have tried this so far.

Share this post


Link to post
Share on other sites

Not to show you up, but here is my chorus II experiment. Crites tweeter diaphragm, and the A55G midrange driver mounted to a forte III mid-range horn.7b46173cd193ca51ade64923334c2d00.jpg

Sent from my SM-G960U using Tapatalk

  • Like 3

Share this post


Link to post
Share on other sites
2 hours ago, dtr20 said:

Not to show you up, but here is my chorus II experiment. Crites tweeter diaphragm, and the A55G midrange driver mounted to a forte III mid-range horn.7b46173cd193ca51ade64923334c2d00.jpg

Sent from my SM-G960U using Tapatalk
 

Nice! What do you think about the A55-G in there?

Share this post


Link to post
Share on other sites
Just now, jjptkd said:

Nice! What do you think about the A55-G in there?

I really like it. The other speaker is stock except for Crites tweeter diaphragm so we can A+B them together. The stock mid-range driver sounds tinny compared to the a55g driver which sounds more natural and detailed.

  • Like 1

Share this post


Link to post
Share on other sites

Hi,

 

Well done for the editing @Gorm

 

Nice new horn, well done for integration on the front @dtr20

 

Right now I'm working on an upgrade of my CWIII and I was inspired by @jjptkd work on K601 / K55G, I'm going to do it on K701 with Faital HF103 instead of 55G  : the difference is that I don't need the bolt adapter . But as for products from the US becoming very expensive because of transport and customs, I do the same with products readily available in Europe: B&C, Faital, ...

 

 

 

:D

 

  • Like 2

Share this post


Link to post
Share on other sites

So...after I did the mod with the adapter, the stereo image from the Chorus IIs was horrible. They lost a lot of clairity and just sounded....off in a strange way.

 

So I decided to upgrade to the K-604 horns. Holy COW what a difference. The clarity is back, and after several listening sessions with them, I am very, VERY pleased with the result. They make the Chorus II sound like  a true heritage speaker. Also, in terms of sound detail and room presence, it made the speakers sound even larger.

 

However, I would NOT do this mod with the adapter. I would have gone back to the old mid drivers if I was stuck with the adapters.

 

 

thumbnail_IMG_6641.thumb.jpg.60d41f34a2e58b49bf82445d6dbd45ca.jpg

thumbnail_IMG_6642.thumb.jpg.b10a62e305a856be8437e84624e981ad.jpgthumbnail_IMG_6644.thumb.jpg.c9bf07d87af4f7fae79f67557166dcb1.jpg

 

thumbnail_IMG_6645.jpg

Share this post


Link to post
Share on other sites

With all the talk of trying to get the Forte 3 horn. Just save yourself the trouble, get a real direct drop in horn for your A55G....

IMG_6640.thumb.JPG.491a89602fe13bc0f4c36f3528eda97d.JPG

 

By far the best mostly drop in upgrade for a Chorus II.

 

  • Thanks 1

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.


×
×
  • Create New...