CLICK ON THUMBNAIL TO ENLARGE PICTURE
|
|
Yamaha CA-2000 BASIC SPECS
The first CA-1000 received wide acclaim, and in 1974 it was updated to the CA-1000 II, then again in 1976 to the CA-1000 III. The first update was an improved version of the CA-1000, while the second was actually a full model change, and at that time a higher end model, the CA-2000, was added. From 1974 through 1976, Yamaha had released the super high end B-1/C-1 and B-2/C-2 separate amps, already establishing an admirable position as an audio maker, and with the CA-2000, Yamaha began feeding back the functionality of the separate amps into the integrated amps, such as the phono equalizer, MC head amp, and a tone control amp substantially the same as the one in the C-2. The CA-2000 had S/N improvement as its main theme, and Yamaha developed a super low noise dual FET and a super low noise IC in house and used them. The internal layout was completely redesigned with a 4-gang potentiometer that controlled volume both before and after the tone control to minimize residual noise at low volumes and an input selector using universal joints to minimize signal path lengths by directly connecting the circuit board and rear panel. Naturally the power amp featured Class A/B switching. In class B, the power output was 120W + 120W (20Hz—20kHz, 0.03% THD, both channels driven), and in class A 30W + 30W, double the power of the first CA-1000. In those times, using tape for live recording and recording from FM were popular, so a Rec Out Selector (allowing recording of a different source than the one being listened to) and a peak meter with selectable Speaker Out/Record Out monitoring were provided for the first time. The meter was added to increase the unit’s appeal as a product, but it didn’t necessarily match with Yamaha’s design concept of simplicity. Even so, it didn’t break the link with the image of the CA-1000, and the look of precision of the C-1 control amp that had the same meter was added. Note that the external appearance was the same as the CA-1000 III, but the lettering around the volume and tone controls was changed from simple numbers to a decibel reading, and this assertion of control amp performance was the only identification other than the model number. |
0 komentarze:
Post a Comment