Bob says: 'The KT-8007 uses an outboard MPX switching scheme very similar to the KT-8300. (At least that is my understanding.) My impression is that the T-70 falls into this category. The actual MPX decoding is then done by external circuitry. Kenwood KT-7000, KT-7001, KT-8005, KT-8007 and KT-8300ĭon notes: "Here's the tricky part: Some tuner designs have a MPX chip that is used to generate a 38 kHz clock locked to the 19 kHz pilot tone. There should be other tuners in this list, but here are a few to start with: Thanks to our contributor Paul for the idea. Tuners that have MPX implemented using discrete transistors (solid state) instead of an integrated circuit Onkyo Grand Integra T-G10, T-9090 and T-9090II Only the T-85, to our knowledge, has four IF bandwidths. Three bandwidth settings, with intelligently chosen filters, can provide even greater flexibility for audiophiles and DXers alike. The benefits of having wide and narrow IF bandwidths in a tuner are fairly basic: wider filters tend to produce the best audio quality, while narrower filters improve rejection of adjacent-channel interference. Here's another good list suggestion from Don. We've made some additions but there are surely many more. Kucke KST22 - 1980 or 1981 (same as ASC AS3100)ĭon's back with the start of another list. Our contributor Peter provides the start of this Eurocentric list, which obviously needs to be more fully populated: Harman/Kardon HK-715, TU615 and 680i receiver Paul Baptista tells us that this chip was also known as the Toko KB4437.: Kenwood L-07T (we have a discrepancy: HA1156 or HA11223?) Kenwood 600T, KT-5300 and KT-8007 (but Don notes that the KT-8007 has a discrete MPX decoder and uses the HA1156 only to generate 38k switching signals)
Below are lists of tuners with others, by manufacturer and in numerical order. The above are Don's original "Big 3" MPX decoder ICs. Kenwood L-07T (we have a discrepancy: HA11223 or HA1156?) Kenwood KT-1000 (has chip, but discrete implementation?) Our contributor Paul Baptista says the Arcam Delta 80 and Telefunken RT200 (whatever those are) use the TCA4500A, the Motorola and Siemens part number for the LM4500A.ĭenon TU-600, TU-630, TU-767, TU-850 and TU-900 He believes that later Quad tuners also use it. *Our contributor Esmond says the Quad FM4 uses the Philips TCA4500, which appears to be identical to the LM4500.
Magnum Dynalab FT-11 and FT-101A (some versions of each) If you can give us a hand and help us expand the lists further, let us know. I have compiled my own list, but I can't be sure it's completely correct." We've since added more tuners to Don's lists with help from Don and our panelists JohnC and Ray, and many other contributors. The 'big 3' I would like to see are the Sanyo LA3450 and National LM4500 (because of their unique decode waveforms), and the Hitachi HA11223 (near universal praise as capable of excellent sound).
We've renamed the page in honor of our contributor Don W., the most prolific creator of list topics.ĭon writes, "I have always wanted to see a list of tuners which have certain MPX decoder ICs. Tuners don't have to have TIC writeups in order to be listed here. Please post additions to existing lists, or suggestions for new lists, in our FMtuners group. We'll need input from readers to make the lists as comprehensive as possible. This page is intended as a place to put simple lists of tuners that have one particular feature or another. Granted to quote our text so long as proper credit is given.ĮBay listings that quote us incorrectly or without credit may be
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