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Am thinking about bidding on a pair of Klipsch Heresy I for my new HH Scott 222C. Is there any important difference between the 1979 model and the 1984 model?Thanks
Follow Ups:
nt
There were three varients of the Heresy during that time span.1)K22+K55V+K77
1.5)K22+K53H(K)+K77M
2)K24+K53K+K76
various type E networksThe 1) was -3dB@70hz, -5dB@17Khz and about 10 ohms minimum around 200hz, roughly 96dB/2.83V, Eminence woofer, Atlas midrange, EV tweeter.
The 1.5) went to a Hepner (later became Klipsch) midrange, M version of the EV tweeter having a little more output above 15Khz.
The 2) went to the Hepner tweeter and a Klipsch built woofer, was
-3dB 50hz~20Khz and about 5 ohms minimum , roughly 94dB/2.83VTo pick up that extra half octave of bass cost 2dB of sensitivity, 5dB of efficency because of the lower impedance. On a tube amp the 1) and 1.5) can frequently be driven on the 16 ohm tap, playing 5dB louder than a 2) on the 8 ohm tap.
The K76 tweeter sounds vastly better than the K77 ever did. The K53 is a fine midrange driver, especially in the Cornwall II and the Forte, but doesn't sound as good as the K55 did in the 1), I would blame the crossover for this.
If I had room for a large speaker I would get the Cornwall II, if I had 50W+ power I would get the Forte 1), the Forte II doesn't sound as good. If I had a 300B I would hook a Heresy 1) to the 16 ohm tap and use a subwoofer. If I had 25W+ I would look at a Heresy 2) and try and improve the network design. If I had a room with concrete corners I would buy '78~'82 Klipschorns.
I think a little correction and expansion is in order:There were two models: Heresy, built from 1957 to 1985, and Heresy II, built from 1985 on. The 1.5 designation is an informal one used by some folks to differentiate the last few years production of the Heresy from the earlier ones. But it is not a Klipsch designation. Klipsch did not change designations simply for component changes.
There were at least 4 different crossovers used in the Heresy over the years: Types C, D, E, E2. The 1979 model had a Type E. The 1984 model had a Type E2. The difference is the addition of a 33 uF cap in the woofer circuit on the E2, made necessary by a change in squawker driver.
There were many different versions of the K-22 woofer from EV, CTS, Eminence, and other sources used over the years. The earliest were 16 ohm EV and CTS units with alnico magnets, followed by an 8 ohm CTS unit with alnico magnet, and then 8 ohm units with ceramic magnets from Eminence, etc.
For most of the Heresy production, the K-55-V alnico squawker driver from Atlas was used on a metal horn. A few apparently were built with the K-55-M from EV. As was pointed out, the so called 1.5 models used a different driver, either the K-52-H or K-53-K, on a plastic horn. There is a small but noticeable difference in timbre because of the change. Whether it is an improvement depends on your ears.
The switch to the K-77-M happened years before the squawker change resulting in the so called 1.5 models. As pointed out, it has a bit better high frequency efficiency. FWIW I cannot hear the difference between the K-77 and the K-77-M.
So which is better, a 1979 or a 1984 Heresy? IMHO it depends on whether you like the sound of the K-55-V or K-53-K squawker driver.
am curious as to how designs were analyzed and adjusted before pc revolution and FFT programs - would be interesting to hear of how Paul Klipsch refined a particular design & made adjustments along the way - was swept sine the main way to chart response? - how much did tuning by ear play a role?
from what I hear most of PWKs work was done via listening. like many geniuses he seemed to get somewhat myopic later in life. (his bulls**t) button said it all. imagine my surprise to learn that he rejected totally the idea of time alginment of speakers. I doubt he though mush of the new-fangled tools. tony
*1993 K-Horns w/ ALK x-overs*Marantz 7T preamp*Dynaco MkIV monoblocks*Sony CDP-CX350 and CX-230 CD changers*MSB link DACIII (96k upsampling)*MSB silver digital director*Luxman PD-272 TT*Grado Prestige Red cartridge
The Goodwill store here is wising up...they have a pair of the older ones, utility model, good labels, etc. for $179./pair.Somebody must be looking up values. They had mirror glass on the
top and sides, so I'll pass, thank you.Coner
where is that ?
Goodwill by me always has absolute garbage .... like RCA speakers
Some day I may hit a gold mine.steve
For that price I'd take them anyway. I'll pay you to box and ship them. dkleitsch@yahoo.com
Is there any way to determine by serial number or production year which Heresy had the K-55V soldered-spade terminals?Thanks,
-jp
I'm not sure any K55V with spade lugs made it into the Heresy, I think the limited number they made all went into the Klipschorn.There were a few Atlas made K51V, a ceramic magnet version of the K55V spade, but as far as I know these all found their way into the Cornwall.
Conrary to what 'nobody' said, the only K55M that made it into the Heresy were on the HIP model.
The solder terminal K-55-Vs did make it into the Heresies (and La Scalas). I have a pair of each with those drivers. I have a pair of HIPs with solder termial -Vs as well. The switch to the solder terminal -Vs was in April of 1980. Klipsch stopped using them in early 1982. The window for the solder terminals is narrow.John
I was a Klipsch dealer from mid '70s to late 80s.Although I never saw the K55V solder lug model in a Heresy I'm sure there could have been many made that way.
Klipsch was not happy with the Atlas ceramic magnet version of the two exit port PD5, the ones I saw were marked K51V and wound up in the Cornwall. The EV version had the plastic back chamber, the only Atlas version I saw of this had a metal bumped back chamber that looked like an ash tray glued on the back of the driver. Atlas had a whole skid of these that Klipsch refused to accept. I bought some of these from Atlas as the PDMR. They did not measure as smooth as the EV made K55M in the 4Khz~6Khz region, but they worked great for PA (especially for $24 each).
Klipsch was hot to reduce the cost of the midrange driver for the Cornwall and Heresy. The Atlas PD5 not only had an alnico magnet, but also required quite a bit of machine work in the magnet assembly. Hepner had long been providing ceramic magnet midrange and tweeter horns with 1" coils to Cerwin Vega. These had stamped plates in the magnet assembly making them dirt cheap by comparison with the Atlas and EV products. The new 1-1/2" VC midrange/HF driver proved suitable for the Cornwall/Heresy product, but was not deemed 'enough' for the K/B/LS . The stamped magnet assembley tweeters were not efficent enough to keep up with the horn loaded LF of the K/B/LS either, and the EV tweeter was retained. The KG2 was the first Klipsch speaker to use a Hepner tweeter, virtually the same one sold to Cerwin Vega.
Ray Hepner died and Klipsch took over the payroll and kept production going. Eventually Klipsch bought the tooling and moved it to Hope.
Other than the RF7 HF driver and the Heritage series, I think the rest of the current Klipsch drivers are made in Mexico by KSC.
Wrong again, I have seen them in Heresys. Don't know if they were orignal or replacements though.
Thanks for posting such helpful information!Dan
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