Billzumwalt

These are now SOLD locally.

These are now SOLD locally.

I certainly will do . A fellow is coming over to check out the Cornwalls, he may also want these crossovers . If not I'll let you know.

The earlier 5000 and maybe 5000a did have a problematic driver board, The most of the 5000x's had a better driver board, like mine.

OH yeah ,

double post

I have gone over to the dark side with a pair of altec lansing model 19 . Please don't hate me 😇

The Crossovers are on hold until 11/21/2017.

Very nice set of all original Klipsch Cornwalls 1983. With B3 crossovers. Can Deliver locally. Spokane, WA . $800 512 590 9234

Oh well, same thing happened to me. I heard a set of these when I bought the Cornwalls but the guy would not sell the crossovers. So I ordered a set and then he lets me know they are for sale ! Best thing ever for the Klipsch. I had the B3 klipsch crossovers and these made a dramatic improvement all across the board. And contrary to some opinions, they sound great at all volume levels, low , medium, and high.

A set of AlK engineering Crossover set. two ea. AP12-600, and two ea. ES 5800 extreme slope. AP12-600 This one is intended for the Belle Klipsch or the La Scala using squawker drivers or horns that will not safely go down to 500 Hz. The crossover is at 600 Hz. This the preferred crossover for The Klipsch Cornwall, Cornwall II, and Corn Scala , Corn Altec etc. These have the midrange level adjustable Autoformer 1 db steps. These are $350 new plus fedex shipping . ES 5800 The 5800 Hz crossover is the recommended frequency for most applications. All versions uses ClarityCaps in the signal path to the tweeter EXCEPT the ES7500. Solen astCaps are used as ClarityCaps are not available in the required value for that crossover frequency. All have adjustable tweeter level settings of 0, -3, -5, -7 and -9 dB attenuation. Auto former . The bi-amp version allows mid-range setting from 3 to 18 dB in 1 dB steps. These are $ 420 new plus fedex I will sell both sets together $700 fedex included to Continental/Contiguous USA call, text or email 5one2 590 9234 billzumwalt@hotmail.com

When ever I use my Sansui 5000x I am in NO hurry to replace it. It's mostly a back up for my tube amps when they need service.

Set the bias , if it's adjustable. If not , measure the tubes current to see if they in range.

The phono stage feeds into the line stage which goes into the phase invertor driver stage which feeds the power tubes. Probably a slightly microphonic tube, could be a capacitor. I have even encountered microphonic wire. Put some heat shrink tubing on the preamp tubes. It will damping the ringing a bit. Most tube phono stages have a bit of microphonics.

If the amplifier designer knew what they were doing it is best to use the type tube it was originally designed for. There are different bias requirements for each tube type. And different wiring requirements sometimes. There are different heater currents for different tubes even if all the other requirements are met. An El34 can be swapped for a 6l6gc if the tube socket is wired to accept both, but the bias range is much different. Maybe the designer allowed enough range of adjustment. The heater current is nearly double in the el34 vs the 6l6. Maybe the design built in enough current capacity ?. Grid load resistors are another variable , a 6l6 or el34 might use 220k but a 6550a or kt88 would be better with 50k. I would stick with what the designer specified for the best performance. Better quality tubes will make a difference, especially if the amplifier is very well designed and other associated components are of very high (revealing) quality.

Just a note about the B3 crossover . My 83' cornwalls had the B3 with a metal threaded horn throat . So I doubt the B3 had anything to do with the change to the plastic horn.

I have been using a pv12 and premier 11a for many years. Have not heard better. I am using all nos tubes and it made a big difference . The most problematic tube is the 12au7 line stage in the pv12. I found the rca clear tops to be the most rugged in that position. The amperex bugle boys are the best sounding though. The rca's are cheap and easy to find though and sound very good. I think cj did not use a grid stop resistor and it's makes the stage very fussy. the second half is a cathode follower and they can be hard on the tube as well. The phono one stage is wonderful and 3D with bugle boys. Nos tubes are expensive but usually outlast and outperform modern tubes by a wide margin. I have the same set of rca 6550a in the pr 11a for over ten years. Same for the small signal tubes. I have a combination of rca and tungsols . There are no electrolytic caps in either of my amps just film caps even in the power supply.

I have an identical set of cornwalls. 1983 with B3 crossovers , drivers all identical. I went with the ALK AP12-600 and ES5800 crossovers, a marked improvement over the B3. Crites are nicely made but no real improvement to stock except fresh capacitors. If you stay stock just change the black square motor run cap and save up for the ALK's .

More power than you need but , Conrad Johnson tube gear sounds great with klipsch or any other speaker I've used. I'm driving a set of cornwall's ( altec 511 on top, alk crossovers) with a premier 11a, nos tubes, and CJ pv 12. I love this amp.

I would not worry about it. Sounds like you have them stored in ideal conditions. I've been using a wide variety of alnico speakers for 50 years. Most are from the 50's early 60's. Never had a problem with the alnico. The paper cones , that's another matter.

I recently did some work on a pair heresys from 1976. They had the oil caps. I expected to change them but I took the time to test them for value , leakage and esr. I found them to be spot on in all regards. So I left them. The speakers sounded fine, balanced etc. there were some bad corroded connections and loose driver mounting screws. I just spoke with the original owner and he says they sound as good as ever. I know certain types of caps good bad , i.e. Most old NPE . I've replaced plenty with poly caps with big improvements. But maybe those oil filled cans have a better life expectancy.

The original B3 caps measure right on with my rebuilt Heathkit IT28. I had previously installed a Stainless Steel screw thru the Coil as the original one was magnetic. ESN ? extreme slope network ? Been doing some more listening and I'll keep the ALK's. Its like now I just enjoy the music.

I just installed a set of ALK AP12-600 and ES5800 crossovers into my Klipsch Cornwall's. I am using a Conrad Johnson PV12 and Premier 11a. The original crossovers were the Klipsch B3 type. These were not bad at all, at the lowest levels I usually listen too. But, I frequently listen at higher levels so I thought I'd try the ALK's. They are a very nice improvement indeed. I did set the tweeter level to -5 on the attenuator, it was set at -3 from ALK. I left the mid range set to -6 db . The bass seems to be firmer and a bit more defined. There seems to be a bit more snap to blues and jazz drumsets on the recordings I just listened too. The mid range has a bit more clarity and a bit less blare, I have the original Klipsch metal horn and ceramic driver, which I believe to be a klipsch made driver just after the Heppner series. The Tweeter is also a ceramic K77m metal horn. I actually find the tweeter to sound just fine, but my hearing is a bit compromised after all these years. I did a test with a signal generator and I can still hear to 17K. I do notice an improved sound stage as well. A bit more depth and locations are well defined, more layers to the instrument positions. At a few moments I felt the stage was wider and some sounds appeared to the out side of the speakers as well. My first impression was the B3 crossovers were fuller bodied , but upon further listening the ALK are the clear winner with better clarity, detail and imaging. At lower levels they sound fine. I was afraid after reading reviews, the lower levels would be compromised , but I do not think so. The B3 crossovers are congested at moderate levels and beyond, probably at lower levels too, its just not objectionable at the lowest levels. I paid as much for the crossovers as I did for the Cornwall, But I am well satisfied so far. billy z

Thanks longdrive. I can't believe how much better they sound just moving the mids down 1db. I am enjoying them too much apparently. After installing the crites crossovers I kept turning them down , now after redoing the autoformer setting I keep turning them up. And my wife has noticed

Have you tried moving the autoformer taps? Assuming you have the crites 3636. I now have them slightly tipped back , facing straight forward. They sound great. The imaging is very real. I was practicing with my bass player and could not tell the difference when it was him playing or the forte's .