hulkss

Black Ash is a standard Klipsch finish these days. Per Klipsch technical support: "They are painted with a 40 sheen Black Lacquer and then it has a 40 sheen clear Lacquer top coat. This material comes from Valspar". The speakers are current models at this time.

OK, here's a photo where you can see the windows I added interior "soundproof " laminated glass to. Here's one where I took down the curtain to show the window plug. The plug is 2 layers of 1/2" MDF with GreenGlue damping material in between. I used latex foam in a can to seal them in place. The plug panels are really heavy as you can imagine and they are sitting on 1/4" thick felt strips. Very little sound makes it through this wall and the room acoustics sound great. The black paint is just to make the curtain edge gap invisible.

Yup, two labs subs with a 90 degree mouth extension. Same efficiency as a K-horn (105 dB/watt) with flat response down to 35 Hz. Can handle 1600 watts continuous power so no problem with a little EQ for bass extension in a home theater room.

The all Klipsch set-up first fired up on December 31st, 2008. I was tempted by Jubilees, but I built this instead - Yes, I must be nuts. Check out the Klipsch room here:Klipsch room

It's just the one unit known as a "manifold" to infinitely baffled sub builders. When installed (see previous photos) the back side of the 4x15 speaker cones plays up into the living space and the front side plays into the crawl space as if it were a giant sealed box speaker alignment. The beauty of the opposing drivers is that there is no resultant vibration forces from the movement of the speaker cones. I've never dared to go down into the crawl space with the sub operating.

It is common for the mid's and Tweets to survive. The capacitors in the crossover block DC completely. Once I dropped a tone arm with a 400 watt per side amp attached to old Khorns. It sounded like dynamite. I had put zener diodes across the tweeters for protection. They exploded and the tweeter horns were toast. I sent the horns to Electrovoice. They evaluated them as defective and repaired them for free.

This graph of music power spectral density shows a measure of what frequencies are present in the music signal and at what magnitude. As can be seen, the lower bass frequencies have the greatest magnitude. Now consider a THX Ultra2 certified surround speaker crossed over at 80 Hz as required by THX for "small" speakers (Ultra2 means the speaker is certified to play reference level in large home theater rooms where you are more than 12 feet from the speaker). The magnitude at 80 Hz is well below the deeper bass frequencies so much less power will be required. This allows a small speaker to keep up with a big one - as long as it does not have to play any bass below 80 Hz. Small surround speakers sound just fine to me. The deep bass gets redirected to the subwoofer by the bass management software in the surround processor.

You are correct. Klipsch employees actually pay attention to these forums and acted quickly to rectify this situation. Amy Unger contacted the Klipsch Warehouse and located some units that replacement parts could be pulled from. Klipsch will also perform the repair to verify that all is well incase any other components were damaged by the overload. All at a very fair price I might add.

When I set the system up the rears needed about 10 times more gain than the fronts. The rear ceiling speakers are not playing below 80 Hz (THX recommended x-over point) so even with 10 times more gain there is less average power going to them. Music power spectral density:

Thanks for the compliments. I gotta say Khorns sound mighty fine in a big room like this. But the IB sub really compliments them. NO BASS SHAKERS NEEDED. The IB sub is amazing. I had to do a complete departure from my normal listening habits and buy some pipe organ SACD's. A number of pipe organs exist with 32 foot pipes that play down to 16 Hz. A few are even bigger and go lower. The biggest is 64' at 8 Hz. The sub has four of these: IB15

The "black thing" is a Panasonic PT-AE3000 projector. I guess it kinda looks like something mounted on the front wall. I'll take some more pictures this weekend. The room is about 6000 cubic feet. The back part behind the seats has an 8 foot ceiling height. These Klipsch KL-7502-THX and KS-7502-THX ceiling speakers were working great until an amplifier failure literally smoked 'em http://www.klipsch.com/images/2600/150x150.aspx http://www.klipsch.com/images/2599/150x150.aspx

Yes, this Infinite baffle sub uses the crawl space under the house as what would normally be the speaker box. The space is very big, hence the IB name. The crawl space is sealed and stays between 55 and 65 degrees all year round. The relative humidity hangs around 55%. The speaker cones are sealed on the side facing into the crawl space. Have a look here: Infinitely Baffled

The improvement with 7.1 is noticeable in a big room where you can ideally place the side and rear speakers per Dolby, DTS, or THX recommendations. There are several signal processing methods in most receivers or preamp/processors to generate the rear channel signal from a 5.1 mix. I'm using only Pro Audio amps now since my last "home theater" amplifier failure. Check out the Samson Servo amps at Sweetwater.com. I have eight of them.

Here's some photos of the IB Sub Speaker Stand for the LaScala.

Well it was all glass. The upper deck windows and the lower corner windows are plugged (glass still in place) on the inside with two layers of 1/2" MDF with "Green Glue" damping compound in between the layers. There is six inches of dead air space from the plug panels to the glass. The very heavy window plugs are resting on felt seals and are sealed in the openings with vinyl foam in a can. The remaining "see through" windows have inside windows from: SoundProofWindows. The theater can barely be heard standing right next to the house outdoors. The back and side walls are covered with 3/4 inch clear Oak tongue and groove boards.

OK, I sent the purchase info. Not sure what it has to do with buying spare parts. I bought the speakers here: Superior HIFI

I heard of that happening when a friends old Phase Linear amp "went DC" into a pair of big speakers. My little 5.25 inch woofers popped and did not even blow the amplifier output fuses. They were fused for 400 watts at 4 ohms (the amp rating per channel) so I guess that's my fault again.

I have one blown KL-7502-THX. I need to replace both of the woofers in it. They are ink marked K1371008671 #78000830 I have one blown KS-7502-THX. I need to replace both of the woofers in it also. They are ink marked K1371008671 #78000829. I removed a woofer from each good unit and measured the TS parameters. They are not quite the same so the 829 and 830 may be different designs. I can't be completely sure as manufacturing tolerances can vary a lot. I'm not asking for warranty or repair support. I blew the speakers up with a bad amplifier. Now I need to purchase replacement parts, plain and simple. The warranty clearly does not cover this: "This limited warranty does not cover failure of the product resulting from improper installation, misuse, abuse, accident, neglect, mishandling, or wear from ordinary use". I paid thousands of dollars for a set of four new current model surround speakers that I would like to repair and continue to use in my "All Klipsch" home theater. The enclosures are plugging four big holes in my ceiling and I would like to leave them there.

The speakers are advertised as THX Ultra2 certified. Per THX: "THX Ultra2 Certified products are engineered for rooms with a viewing distance of 12 feet and beyond". Per Klipsch:100W continuous / 400W peak; 8 ohms; 93dB @ 2.83V / 1m These speakers have no problem playing up to reference volume in my room. Keep in mind they are crossed over at 80 Hz to perform as rated. The speakers were not blown during use. The amp failed and fed them 66 volts DC. It was a big power amp (B&K 200.7). The woofers fried open before the amplifier output fuses blew.

A few quick answers and I will post more as I can. This room is in Wisconsin not too far from Minneapolis. Ceiling speakers worked out best for the surround and rear channels. I'll have to post more photos. The room is not all 16 feet high. The room is 22 feet wide and 22 or more feet deep. I'm using eight amp channels now (7.1) but I have two DEQX processors and will tri-amp LCR for a total of 14 amplified speaker channels. This room was a "great room" in the center of the house. I'll have to talk more about the extensive window treatments. I've got seats from Hjellegjerde about 12 feet from the screen. The acoustically transparent screen is from Seymour AV. It is 16x9 95" wide (110" diagonal). I'm considering a change to 105" wide and 2.35:1. The LaScala on the IB sub is altered only on the bottom. I'll post some more photos soon.

Here's a shot of my newest home theater room:

Yes, that's is for sure. I'll start another post about the theater room.

Thanks. I toned down my first post. I should not have written it right after reading the "no parts available" email. Good luck finding me some parts

The ceiling speakers are the two side surrounds and the two rear speakers in a 7.1 speaker system (not visible in photo). The center LaScala II is sitting on top of an Infinite Baffle subwoofer that uses the crawl space below for a back chamber. There are 4 15" drivers with a total of 12 liters of linear displacement. Yes that is the screen rolled up. It is acoustically transparent and rolls down in front of the LaScala. I think I need to trade it in for a wider model.

I contacted Klipsch Customer Service on the telephone after the disappointing email reply. They said my only option was to buy new speakers. I have been a big Klipsch fan for many years. All I want is some spare parts. I already have the fried drivers out of the enclosures. Here's a look at the main speakers I am using the ceiling speakers with.