Yamaha CT-7000

November
1 9 7 4 november 1974
1 9 7 9 1979

Another Yamaha statement - perhaps not "the best FM tuner ever made" - but is there such a thing ?

One of the best FM tuners at any rate AND one of the most well designed - same as a Sony ST-A7B.

Available mainly in silver, black being added at the end of the production run - silver looks better but then black on this unit looks better, too.

You'll find schematics aplenty below plus a compleat review at the FM tuner info website, of course.










Original japanese catalog finally at hand ! It shows the inside, with and without the shields ! Yes ! Stay tuned !

Yamaha CT-7000, image 1 Yamaha CT-7000, image 2 Yamaha CT-7000, image 3
Yamaha CT-7000 specifications
Title Value
Tuning range : 88...108MHz
Mono usable sensitivity : > 2,0µV (normal, IHF)
> 2,5µV (wide, IHF)
> 1,6µV (normal, DIN, 40Khz dev., 26dB S/N)
> 2,5µV (wide, DIN, 40Khz dev., 26dB S/N)
Stereo usable sensitivity : > 50µV (DIN, 40Khz dev., 46dB S/N)
Image response ratio : > 120dB
IF response ratio : > 120dB
Spurious response ratio : > 120dB
AM suppression ratio : > 60dB
1mV Capture ratio : > 1,0dB (normal)
> 0,7dB (wide)
10mV Capture ratio : > 2,0dB (normal)
> 3,0dB (wide)
100mV Capture ratio : > 0,7dB (normal)
> 0,6dB (wide)
75Khz dev. IHF Alternate ch. selectivity : > 85dB (normal)
> 18dB (wide)
±300Hz, 400Khz dev. DIN Alternate ch. selectivity : > 65dB (normal)
> 10dB (wide)
±500Khz dev. DIN Alternate ch. selectivity : > 90dB (normal)
> 40dB (wide)
Mono S/N ratio : > 78dB (65dBf, IHF, 75Khz dev.)
> 72dB (65dBf, DIN, 40Khz dev.)
Stereo S/N ratio : > 75dB (65dBf, IHF, 75Khz dev.)
> 69dB (65dBf, DIN, 40Khz dev.)
400Hz@75Khz dev. mono THD : < 0,06% (normal, IHF, ant. level = 1mV, 65dBf)
< 0,04% (wide, IHF, ant. level = 1mV, 65dBf)
1kHz@40Khz dev. mono THD : < 0,06% (normal, DIN, ant. level = 1mV, 65dBf)
< 0,04% (wide, DIN, ant. level = 1mV, 65dBf)
50Hz...10Khz @75Khz dev. mono THD : < 0,2% (normal, IHF, ant. level = 1mV, 65dBf)
< 0,08% (wide, IHF, ant. level = 1mV, 65dBf)
50Hz...10Khz @40Khz dev. mono THD : < 0,2% (normal, DIN, ant. level = 1mV, 65dBf)
< 0,08% (wide, DIN, ant. level = 1mV, 65dBf)
400Hz@75Khz dev. stereo THD : < 0,06% (normal, IHF, ant. level = 1mV, 65dBf)
< 0,04% (wide, IHF, ant. level = 1mV, 65dBf)
1kHz@40Khz dev. stereo THD : < 0,06% (normal, DIN, ant. level = 1mV, 65dBf)
< 0,04% (wide, DIN, ant. level = 1mV, 65dBf)
50Hz...10Khz @75Khz dev. stereo THD : < 0,3% (normal, IHF, ant. level = 1mV, 65dBf)
< 0,15% (wide, IHF, ant. level = 1mV, 65dBf)
50Hz...10Khz @40Khz dev. stereo THD : < 0,3% (normal, DIN, ant. level = 1mV, 65dBf)
< 0,15% (wide, DIN, ant. level = 1mV, 65dBf)
Stereo separation : 50dB (normal & wide, IHF, 400Hz@75Khz dev.)
50dB (normal & wide, DIN, 1kHz@40Khz dev.)
35dB (normal, IHF, 50Hz...10Khz, 75Khz dev.)
40dB (wide, IHF, 50Hz...10Khz, 75Khz dev.)
35dB (normal, DIN, 50Hz...10Khz, 40Khz dev.)
40dB (wide, DIN, 50Hz...10Khz, 40Khz dev.)
Frequency response : 50Hz...10Khz (±0,3dB)
30Hz...15Khz (+0,5dB / -1,0dB)
Sub-carrier product ratio : > 70dB
Muting threshold : 3...30µV
Stereo level : 3...30µV
Auto-blend level : I: 100µV
II: 1mV
Componentry : 108 transistors
12 dual-gate FETs
3 MOS-FETs
9 junction FETs
33 diodes
9 Zener diodes
7 ICs
1x two-element ceramic filter
1x four-element ceramic filter
2x two-element ceramic block filters
Headphones output : 4...16 Ohm
Fixed output : 775mV
Variable output : 2V...70mV
Antenna input : 300 Ohm balanced
75 Ohm unbalanced
PC : 23W max.
13W max. (lights off)
Cabinet : american walnut
Dimensions : 43,6 x 14,4 x 35,2cm
Weight : 13kg.
Yamaha CT-7000 : 0 topic
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page online since : november 2005
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page type : LGT / KNB
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