I have a set of these, purchased from a guy who built the cabinets for them based on the design "System 22" in the Philips application book "Building Hi-Fi Speaker Systems" by M.D. Hull C.Eng. A.M.I.E.R.E, published between Dec 1969 (1st edition), April 1973 (5th edition, full revision) which I have. Low resonance frequency of 43 Hz, 40W RMS handling power, 8 Ohms. Crossovers are at 500Hz and 4500Hz. It's response is flat plus/minus 2dB from 80Hz to 20,000, down 6dB at 50Hz, then a fairly steep drop-off but is still producing sound (-20dB) at 23Hz. I couple mine subtly with a subwoofer to bring in the lowest octave where this design tapers down. Smooth, super-clean sound, but because of the 4 tweeters being arranged around the woofer in the top 1/3 of the cabinet, it is not brilliant at imaging since there is no point-source for the highs. I may redesign the baffle board someday so that the woofer will move closer to the bottom of the cabinet to pick up some floor bounce in the bass, and I'll arrange the tweeters and midranges in a vertical array to re-establish a point source. I suspect these were designed to be used in a concert hall where the listeners would be at a great distance from the speakers and therefore there would be better imaging.
This is one of the largest designs from the Philips "how to build loudspeaker cabinets" design books from the late 70s/early 80s. See this link, page 48 for overall dimensions, but that one uses the 5080 midbass woofer as midranges with an isolation box, the later design uses the 5" AD5010SQ squawker/mid: frank.pocnet.net/other/Philips/elcoma/Philips_ApplicationBook_SelectedHiFiSpeakerSystems_1969-11.pdf
These are the drivers for the Philips 22rh499's but reconfigured. Excellent loudspeaker.
22rh499 does not come with AD12100. In deed AD1250
Awesome! These are homemade 499’s, the exact same awesome drivers
Awesome setup and beautiful sound 👌👍
Espectacular Philips!!!!!
I have these speakers, someone put them in a dumpster. I pulled them out, took them home . Nice !
From the dumpster?! Buy a lottery ticket immediately!
interesting speakers! any info about them?
Hi, is this a hand made or originally made by Philips, I have never seen... How many watts ? 4 or 8 ohm ? Thank you for your response...
I have a set of these, purchased from a guy who built the cabinets for them based on the design "System 22" in the Philips application book "Building Hi-Fi Speaker Systems" by M.D. Hull C.Eng. A.M.I.E.R.E, published between Dec 1969 (1st edition), April 1973 (5th edition, full revision) which I have. Low resonance frequency of 43 Hz, 40W RMS handling power, 8 Ohms. Crossovers are at 500Hz and 4500Hz. It's response is flat plus/minus 2dB from 80Hz to 20,000, down 6dB at 50Hz, then a fairly steep drop-off but is still producing sound (-20dB) at 23Hz. I couple mine subtly with a subwoofer to bring in the lowest octave where this design tapers down. Smooth, super-clean sound, but because of the 4 tweeters being arranged around the woofer in the top 1/3 of the cabinet, it is not brilliant at imaging since there is no point-source for the highs. I may redesign the baffle board someday so that the woofer will move closer to the bottom of the cabinet to pick up some floor bounce in the bass, and I'll arrange the tweeters and midranges in a vertical array to re-establish a point source. I suspect these were designed to be used in a concert hall where the listeners would be at a great distance from the speakers and therefore there would be better imaging.
what model of speakers ?
This is one of the largest designs from the Philips "how to build loudspeaker cabinets" design books from the late 70s/early 80s. See this link, page 48 for overall dimensions, but that one uses the 5080 midbass woofer as midranges with an isolation box, the later design uses the 5" AD5010SQ squawker/mid: frank.pocnet.net/other/Philips/elcoma/Philips_ApplicationBook_SelectedHiFiSpeakerSystems_1969-11.pdf