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A very loose translation: I am a bass freak so I built four Klipsch style cornerhorn bass units with JBL2235 woofers.As you can see they are faced with marble.It took me 120 hours to build them.Four of these are too much in a small room so I am selling two.The ultimate brutal basshammers.Get your own high frequency.After the check clears I'll send them to you.USD$1400.

Use the adaptor with the 5/8" entry with the "tunnel".The adaptor without the "tunnel" is made for drivers with a 1" exit.Using an SAHF or K55V without the correct adaptor will cause distortion below 1Khz.Genuine Atlas adaptors have a 5/8" entrance with a "tunnel" that is about 2" long.I have several of these plus some 3/4" entrance about 1" long and some 7/8" entrance about 1/2" long and of course 1" flush.I also have some Atlas dual 5/8" entry with 1" exit for those of you that need 6dB more output.

After announcing the layoff of 25% of their employees and the closing of their service center Gateway stock went up 3%. Does that mean if they layoff 100% that the stock will go up 12%? Love the cow colored boxes.(yes I use a Gateway at work).

Networks are stock AA type.Klipsch ran out of oil caps for a while.Cabinets are destroyed from sitting in standing water.Look at the rear view.You can have 'em.

The Soundcraftsman PCR amps should be avoided.The PCR 800 had the same schematic as the Hafler DH200.The problem is the 'PCR' part.This was in a way similar to what Carver was doing wih his 'magnetic field' power supplies.This topology destroyed more woofers than all other amplifiers combined.The original ouput devices are also unavailable for when these amps will need repair (notice I said 'when' not 'if').

The RP-3 has a 6" square horn mounted in front of a 1" voice coil convex dome driver.I have six of these that were made by KSC.The B&C DE45 is a 1.75" voice coil concave dome driver.How high a compression driver goes is 3.5Khz .Then they start to roll off.What you end up with is a function of the directivity index of the horn and how much eq there is in the network. http://www.partsexpress.com/pdf/294-410.pdf Here is a pdf file of a JBL 1" driver, the 2426.Note the difference between the raw terminated tube and the on horn response.Also note that the DCR of the 8 ohm driver is 3.3 ohms .Virually all 1" drivers look like this.Matter of fact you can take a JBL 1" diaphragm and install it in an Altec 820/804/806/808 and it will work.I have also used the 1" RCF N481 in JBL structures.My conjecture about B&C is based on private remarks from someone in Italy (where B&C is made).If I could get my hands on an RF-7 I could tell you for sure.

http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1269017281 Or if you choose to re-cone yours do them both so they match.

High probability of origin http://www.bcspeakers.com/pdf/de45.pdf

"Better than sex."Are you sure you're doin' it right?

John Warren: I don't know what the specs are on the EV 18W-K .I do know that If you send them a frame they can still re-cone them. Bruce: There was a Motorola KSN1016 piezo mounted in the mouth of the EV SM120 midrange horn.The crossover was 6dB/oct at 400hz with a 6dB series pad.The pad was bypassed by a tank circuit tuned to 4Khz.This made the SM120 flat from 400~4Khz and also matched the level to the woofer.The KSN1016 was crossed at 18dB/oct at 4Khz and was flat to beyond 20Khz.This was fine in a big room but overpowering in a small room.Later I added a three position 20Khz roll-off switch.After making several dozen fiberglass horns that looked like the K400 I went to Atlas drivers.

I had 100 woofers custom made for me.They were similar to the K33E.For a stock LaScala you cannot find a better woofer than the K33E and at $100 from Klipsch you can't go wrong.On the ones you heard I used an EV1823S.Later I went to using the EV1824M and then Atlas.For hi-fi use I used one KSN1016 crossed at 3.9Khz at 18dB/oct with a matching transformer to adjust the level.For PA it will take three to handle the power in live vocals.Klipsch used five of the KSN1016 in the MCM1900 crossed at 7Khz to four K55V.

The best Klipschorns were made from 78 to 82.In 78 the K55V went to solder connections.These sounded better than the K55V with push-button connectors.In 82 everything changed.Newer networks have an elliptical filter in the tweeter circuit that rings.The K55M does not have the low end that the K55V had.The plastic mid horn lacks rigidity and is harder to deal with as it must be stiffened up as well as damped.Later bass horns are made from 5 ply.Original used 9 ply.

Wow! K51V ! A very rare beast indeed.This was the ceramic magnet version of the alnico K55V by Atlas with the two port phase plug.After this the Cornwall went to the K52H by Hepner and the Klipschorn went to the K55M by EV.

A pair of LaScala take only three sheets of 4 X 8 plywood.Birch runs about $36 in Iowa.The 60* angle on the doghouse is cut by tilting the blade on your tablesaw to 30* and feeding the wood vertically into the blade.Screw a board about a foot tall onto your rip fence.This is called an auxillary fence and most saws have their fence pre-drilled for this.My very first speaker project with my brand new Sears 10" tablesaw was 12 pair of LaScala boxes.The first two pairs took about 4 hours per box.The last ones took about an hour and a half each.A router with a template would have saved a bunch of time cutting holes.

Tom, you want a pair of 2350? I'm in Iowa just off I-80.

The photo is the back end of a homebuilt cornerhorn.It may look a little odd as it has a woofer loading hatch on either side.The tailboard is not installed in this photo.Here is a shot of the same speaker from the front. http://www.artandaudio.com/kfront.jpg The strips of plywood go from top to bottom along the opening that fits into the corner.

"The drivers are different though." Same K55V(Atlas PD5)and K77(EV T35)as used in all later Klipsch models used through 1982.1000hz horn compared with the newer Heresy using 700hz.EV SP12 woofer.

"my k-horns have larger unsupported panel areas than your la scalas (right?)" Actually, no.The unsupported sides of a LaScala are 4 sq ft.There are no unsupported panels this large in a Klipschorn.A Klipschorn can sound quite 'woodey' when played loudly.The two biggest problem areas are the exit slot at the back where the sound exhausts into the corner and the top and bottom slopes of the woofer chamber.A pair of 2.5" wide strips of .5" thick Baltic Birch that go from top to bottom are easy to add. http://www.artandaudio.com/krear.jpg The other surfaces are much harder to fix.The Lascala is easy to fix compared to the Klipschorn.

"but the "Wall of Sound" didn't have anything but DIRECT RADIATION either..." I beg to differ.All the tweeters in this PA were EV T35.The same one used in the Klipsch Cornwall.

http://home.pb.net/~mattman/Klip1.jpg This is a K43E made by Eminence the 12th week of 1985.Eminence is 67, CTS is 137, Credence is 117, Those three should cover most of the woofers used from the 60's forward.

John is right.The NAD2200 was notorious for bad speaker relays.

"Does anyone know if that $248 was for a pair or for one?" That was for one without grill.Raw plywood.A pair of oak Klipschorns were $2882.And the dealer margin was much less than it is today too.To put things in perspective you could buy a Pontiac Firebird all decked out in 1973 for $3295.

JBL switched from Alnico to ceramic magnets for woofers in 1979.The cast aluminum frames broke.They had to re-design the frame casting and go to a different alloy.

Klipschorn Decorator Birch Raw (no grill and no top)

"Hi, I am sorry, mistyped the link try again (hate these long adresses)" Surely you jest! Just click on the address bar, then click on Edit, then click on Copy, go back to the dialog box and click on where you want it, click on Edit, then click on Paste.