Adding the port tubes was my idea. I noticed that the bass was a little boomy around 80hz to 100hz so I modeled it using bass box pro and it did have a slight bump in response. I then modeled it with 4" port tubes and everything got better. I also rebuilt the crossover myself and got the caps and mounting board from Bob. I picked up the coils and resistors from Madisound. It was a little work dismantling the existing crossover, but worth it. Exerything got a little cleaner and more realistic

Crossover

The original Chorus just had 2 - 4" diameter holes cut in the motor board. I obtained the T/S parameters for the K-48 driver from the Klipsch Tech Help Center. Then I modeled it using Bass Box Pro and determined that by adding ports I could get better bass response. With the stock bass loading there is a 3db peak centered around 80 hz and the F6 is around 45hz. This woofer really needs a larger box. By adding the ports I was able to almost eliminate the peak and was able to extend the F6 to

Selling a pair of upgraded Original Klipsch Chorus speakers in great condition. They have a few scratchs, but overall are great looking speakers. They have consecutive serial numbers, 90011293 and 90011294. They are 101db, with a frequency response of 39hz to 20khz. They have been complete gone over. The tweeter diaphrams have been replaced with titanium diaphrams, (I still have the original), crossover have been updated with all new parts from Bob Crites, internal wiring upgraded, binding posts

I obtained the T/S parameters for the K-48 driver from the Klipsch Tech Help Center. Then I modeled it using Bass Box Pro and determined that by adding ports I could get better bass response. With the stock bass loading there is a 3db peak centered around 80 hz and the F6 is around 45hz. This woofer really needs a larger box. By adding the ports I was able to almost eliminate the peak and was able to extend the F6 to approximately 37hz on paper. The ports are 4" in diameter and 5.5" long

Selling a pair of upgraded Original Klipsch Chorus speakers in great condition. They have a few scratchs, but overall are great looking speakers. They have consecutive serial numbers, 90011293 and 90011294. They are 101db, with a frequency response of 39hz to 20khz. They have been complete gone over. The tweeter diaphrams have been replaced with titanium diaphrams, (I still have the original), crossover have been updated with all new parts from Bob Crites, internal wiring upgraded, binding posts

The DJK mod does help increase the low bass output. It is pretty solid down to about 35hz. This is my second attempt with this mod. The first time I tried it with a total rear volume of 4.8 cu-ft and I was using a newer K-33 woofer. I got some lower bass, but I wasn't totally happy with the results. Next I made the rear volume 6 cu-ft, similar to the Cornwall volume. The bass got deeper, but I had a loss of bass around 50hz. Finally, I tried BEC's new woofer which has a lower FS. The 50 hz dip in

I'm going to be selling my split Industrial La Scala's because they are just too big for my listening room. They sound excellent, but they really need a nice size room to sound as good as they could. I paid $1250 for these a few years ago and have put over $500 into them. They have been repainted recently and look pretty good, but are more of a basement speaker do to their industrial look. I've made the following modifications to these speakers: (New BEC tweeter, dampened squawker horn, new slightly

Hi Pete, Yes, there is and we meet on the third Sunday of every month and evaluate equipment. See the web site below. http://www.chicagoaudio.org/directions.htm

Both the Creek and the Maxx 806 were modded by Stan Warren. I know he changed the volume pot and a few caps in the Creek. I purchased both of these pieces from a fellow member of the Chicago Audio Society. If interested just email me and I can look into the cost and time in having another Creek modded.