Shock-Late

I'm not into cross over design at all, but I think it means when using the tweeter in multiamplification with an electronic crossover, the slope should be at least 18dB/oct. I'd say it's a matter of power handling. Maybe I'm all wrong, tho.

Hum... OK so basically I'm still not sure I'm gonna order the CP25... I'm tempted, but not sure i'm gonna like it better than with the K77... wish I could try them before but no way! Al, I looked at your site, I would mount the tweeter the same way as you did, with the cheeks horizontal. I often see JBL baby cheeks mounted the other way but the horn seems to be quite different, not a pure bi-radial like the Beyma is... That said it's quite funny that it's almost impossible to find any clear information about "THIS is the 100° dispersion, this is 60". it's like they know it when they design the tweeter but are unable to remember it later...

Elso, I'm not sure about the "frying pan" sound of slot tweeters. But what i know for sure is that from the different CP tweeters in the Beyma range, only the CP25 is described by Beyma as ideal for sound reinforcement AND studio monitoring use. There must be a reason why it is supposed to -again according to the manufacturer's own words- sound more "hi-fi" than the other tweeters in the range, be it the shape of the horn or something else (altough I think they all share the same diaphragm and magnet assembly). Just my 2 pences.

Hell, I know what it is: flatmates! I've got two of them! Of course, my bedroom is far too small so when i moved in I had to put my system in our main room. Wich wasn't really a problem because, believe it or not, I'm always happy to share "my good sound" with other people. The problem is: they really don't give a sh** about Hi-Fi. They're more than happy (well, the girl is) to have a very LOUD system so everytime we have a party my Scalas awake the whole neighbourhood; but tell them about SOUND? The sadest thing is that the guy is actually a musician! And most of the times he just listens to some low quality MP3 jazz tunes he picked up on the net, at a playback level a cheap kitchen radio would be happy to push out! Only with movies on DVD do they show a little more enthousiasm. But all that is OK. they're not forced to like good sound. What is really scary is, indeed, the level of damage "not-into-hi-fi-people" are able to do to your system. I stopped asking them to let the amp switched on, or in "standby". finding the remote is too hard for them. They prefer to switch it on and off and then on again by pressing the main button on the fascia. I try not to ask them everyday to use the remote rather than the main knob to adjust the level when they're eating something greasy or sticky. I have to clean my new amp's fascia every week to remove sticky fingerprints. I tried to explain them it's not a good idea to unplug a source when the system is ON. I had to argue and argue to make them understand WHY i didn't want the Scalas to move BEHIND the sofa (that battle is won ) I had to forget about the idea of using a Class A amp after my Musical Fidelity A100X almost burned (hopefully my new NAD sounds better!) I have to be the "annoying guy" who screams on everyone trying to put his beer on the amp during a party. I still find some CD covers lying on the amp's breathing grill when I come back from work. everyone thinks I'm a maniac. I lost my dad's 35 Y/old Sansui amp after they managed (how???) to destroy the volume control (blocked!!! ) I had to repair my Nordost interconnect because the girl pulled on it. I have bad dreams of me coming back home and seeing fire coming out of my tweeters... maybe I'm crazy. One day I'll be rich. One day I'll live alone with my system.

huh ho... i may be wrong, dude, but I think you could have burned your tweeters doing that! I don't know that much about the Reference serie but I think generally speaking it's not a good idea to swap crossovers if the cross-over frequency isn't going to be the same. Now maybe it IS the same in that case, i don't know, but you should be careful. Just my two pences...

What's the correct CP25 orientation? should the "cheeks" be horizontal or vertical? What gives out the widest dispersion?

BTW, any pic of Arkytype's system available??

EV SM120A. Maybe better than 511B because they don't ring (they're not made of metal), wider dispersion, absolutely sweet, smooth and detailed sound. didn't believe what I heard from my Scalas when i bought my SM120A. Plus they don't require any adapter, the K55 will screw itself nicely in the throat.

Another few questions concerning Beyma CP25 ( don't wanna order a brand new pair and pay for them just to find out my old K77M sounded better on my Scalas! ) OK so I'm pretty sure those CP25 ARE better tweeters. They have a very good reputation, and there's no way i could afford the baby cheeks from JBL so beyma seems to be the best "second choice" (after all, I still need a good sub, and here in Belgium I can almost buy a good sub for the price of the JBL tweeters...) Still i'm concerned about the relative "lack" of efficiency of the Beyma compared to the T35. It's true that on some music i wish i could slightly tame the treble down; the more so since I put the 1uF bypass cap that makes the treble more "hot" and defined... but i wouldn't want my system to sound "too soft" either. Just want it to sound right. That said, i'm using EV SM120A midrange horns; those babies have a wide and smooth 120° horizontal pattern; the Beyma could be a good match; i also feel that maybe those horns sound a little bit less "loud" than the K400, and maybe a slightly less sensitive tweeter, such as the Beyma, could just do the trick. Donno... a bit confused here... any thought welcome Frans

what about x-over compatibility? would this Beyma work with a modified (1uF bypass cap) AA x-over? What improvements should one expect compared to the stock T35? thanks dudes!

One week ago I moved my modified Scalas from the small wall to the big wall. Well, the result is very very different indeed! More air and space, more detail... BUT in my room I lost the great "phantom" voice that used to hang right in the middle between the speakers in the previous configuration. Now a big orchestra has better "stage" proportions, but when I listen to rock or pop music the singer's voice is not as precisely focused as it used to be. That said, there's no real "hole " in the middle of the soundstage. it's just more... "vaporous" if it makes sense. I think I rather like it... Also I moved my seat forward so it's not back against the back wall anymore. It made the sound way too "thick"...

look at townshend audio's fantastic ribbon super tweeters. Supposed to "sound" great, and they look the part. i think it's now an established fact that a super tweeter adds perceived air and speed i the music, even tho you can't really "hear" those extreme frequencies. it's all about harmonics, i think. Acts like it's virtually modifying the response of the existing tweeter, or something like that... Of course it's another "cable and snake oil" never ending discussion. But i'd say we know virtually nothing about human hearing, we just know what current measurements are able to tell us! So why not. i'd like to give it a try if i had the money (but i need a good sub first )

If you want a great amp on the cheap: NAD 320BEE. I've used many amps, included class A amps from Musical Fidelity, high-end early 80 technics pre-power, revox, marantz, all considerably more expensive than this NAD amp (actually the only one i bought new) and IMHO the little NAD is the best i'e owned so far, for all types of music, with my La Scalas.

A very good, high end active subwoofer could nicely complement your speakers...

Why not just modifying the crossovers of your heresys? i did that with the AA networks of my Scalas (the famous 1uF bypass cap, ask Al Klappenberger!) and the result is marvelous. More extended, open and detailed treble. Must be possible to do a similar mod on an heresy! And this is probably the cheapest mod you can do!

mp3 can sound "good" if they're at least 160kbps, i'd say 192kbps is best. That said, i'd be tempted to say that they sound even better once "converted" (of course, they will still have the mp3 sound) to audio tracks and played on a decent CD player. Just because the output stages of a CD player are generally better than those of a computer... But then of course you loose the convenience of having all your music on a playlist in a computer... You could also burn mp3 CDs and play them trough your dvd player, they are often able to read them. But for the best quality... buy records!

I would suggest you keep your existing crossovers and drivers, and just replace the K400 with another, better 400Hz horn (see my posts about EV SM120A, but Altec 511B should be nice too! Good thing about the EV horn is that the klipsch drivers don't need any adapter to be screwed on it). You'll notice an amazing difference in sound (night and day, really!) If you're still not satisfied, then you can mod your x-overs using Al's recommandations, or even better buy a set of his own ALK type A crossovers. No need to change the cross-over frequency if you're not in the absolute need of using a SMALLER horn (but why??)... enjoy

Just saw on this website that the Heritage serie has been updated, major changes being new tweeter (K77F) and midrange, new x-over frequencies (4500Hz for mid/tweet x-over? now that's a curious choice!!!) Why did Klipsch change? better? or cheaper? any thoughts?

I just looked at the new klipschorn specs; i thought they were almost the same as the old one, but I see now that the mid/tweet x-over point is now at 4,5KHz instead of the "historical" 6KHz, 450Hz fir the bass instead of 400Hz, and that the drivers have changed to K77F and K55X or something... when did those changes occur? and....WHY???

Thanks, D-MAN. I was quite shocked by the kind of answers I got here. I can't believe so many people on this BB don't believe in cables and dampening feet. I'm not golden eared. I'm not a rich old guy looking for new ways to spend his money; I'm a 25 y/o unemployed guy with not much cash. But the tips I try (mostly well established hi-fi "tweaks") often work a wonder. Even my friends do notice a difference each time. Stopping your low frequencies from disturbing your CD player and making all electronics parts and transport vibrate, has nothing to do with snake oil. Audio signals are so little they can be easily disturbed by spurious vibrations of the components. It's been measured. That's why high-end audio stuff generally use big, solid, heavy cases. i'm into hi-fi, not into PA. I'm not rating my hi-fi by knowing how loud it can go before there is distortion. But when i do crank it up, and believe me I DO, the sound stays the same as it is at low volumes. No blurring, no "fat" midbass, no harsh treble. Now to answer some real questions: the spikes i bought are enclosed into composite feet; they don't scratch your support. There's a multi layered, upside-down spike inside. I'll try to post the schematics. From the outside you can't guess there's a spike in there. They DO work a magic. Maybe better than normal spikes.

OK, did the last mod. The bypass 1uF cap. Sounds great; opens up the treble, makes everything more "airy"; I was afraid it would make the treble more proeminent and "in your face" but it just sounds more "elegant" and "sharp". result is actually LESS agressive despites the increased high treble output. So people, yes, ditch the screw, ditch the zeners, put the 1uF! oh, and, about the zeners... I DID hear a subtle difference even at low volumes when I diconnected them; however, it may be only in my head...

Bought a set of four "Super Spikes" feet for electronics. Installed them under my Kenwood DP7090 CD player... and WOW the result is simply amazing! less harsh, tighter and deeper bass, better imaging... and the more you turn the volume up, the more you hear the difference. And believe me people, with the kind of acoustic energy coming from our beloved big Klipsch, vibration dampening stuff is not a gizmo!! fantastic stuff, really. I'll buy a set for my amp soon.

Looks great but what a shame to use horns in such a small room!!!! I bet the wife said "no" to them... sad...

The tweeters are the stock K77M you find in the complete Heritage line (except Heresy II)...

JMON, here is the pict. Q-Man, the mids integrate better (in my case) with the bass when the horn sits a few inches backwards. The "lips" are so big anyways than the LS bass bin doesn't stand in the way of the sound. Mounting the tweeter under the midrange horn would make it sit way too low for confortable listening... Now my ears are just at the eight of the midrange-to-mid transition (don't know if it makes sense in english, it's rather difficult to explain things for a french speaking guy like me )