Speaker for vintage H/K 430 in 2-Channel Home Audio Posted April 9, 2005 Heresys, preferably Is, bought well from eBay or elsewhere plus a used HK 430 are the best bang for the buck in audio IMHO. My son uses his HK 430 to power '82 Heresys (HK 430 and Heresys all for less than $400 from eBay). With efficient Klipsch speakers the power to size ratio is counter intuitive. We hooked the HK 430 up to Cornwalls and they played louder than the Hereseys at the same position on the volume control. Your fine HK 430 would produce a prodigious amount of low distortion volume from any Klipsch Heritage speaker and most other Klipsch speakers.