Erotisk JVC DD-VR9 Cassette Deck Bilder
Through virtually doubling the amount of noise reduction provided by the normal Dolby-B system or its JVC equivalent, ANRSC-type Dolby is designed to meet the needs of today's wider-dynamic-range recordings without losing compatibility with existing Dolby-B-encoded tapes.
The capstan of the DD-9 is direct-driven by a quartz-locked servomotor, and a separate d. The record- and playback-head elements, both housed in a single casing, are made from Sen-Alloy and have tapered "X-cut" pole pieces to reduce variations in low-frequency response. Transport functions are electrically operated under IC-logic control with light-touch pushbuttons, and LED indicators are provided to show the current mode of operation.
Cassettes are loaded, tape openings downward, into slides behind the cassette well door, whose large, transparent surface provides Karen Montebon visibility for the cassette inside. The door is also easily removable for routine head cleaning. Recording level is set by separate up and down pushbuttons that control internal motor-driven potentiometers.
A red indicator needle shows the actual position of the record-level control. A similar horizontal slider without the detent controls the deck's output level at the rear-panel jacks and at the front-panel headphone jack. A pushbutton switch allows selection of either VU or peak-reading characteristics, and in the latter mode the segment corresponding to the highest level of a transient remains illuminated for a second or two after the signal has dropped.
Indications above 0 Jvc Dd 9 are shown in red, those below in blue. Three pushbuttons select the appropriate bias and equalization for ferric, CrO2, and metal-tape formulations. To use the factory-determined settings a preset pushbutton is pressed. Or, alternatively, one can compensate for brand-to-brand variations among tapes of the same type by using JVC's microprocessor-controlled optimization system.
Called B. Bias, Equalization, Sensitivity of Tapethis automated calibration procedure successively tests various bias levels, mid- and high-frequency re-cord-equalization settings, and sensitivity levels, and selects the optimum settings for the cassette in use. It then rewinds the tape to the starting point. The whole operation is initiated with a start pushbutton and takes only about 30 seconds to complete. The tape counter uses a four-digit electronic readout and can be switched to indicate either the number of hub revolutions or, if the stopwatch button is pressed, the actual running time.
The rear panel of the DD-9 contains the usual input and output jacks, an fm mpx switch to eliminate possible interference from the stereo subcarrier signal when recording FM broadcastsJvc Dd 9 a DIN-type connector that accepts a remote-control accessory. JVC supplied the specific tapes used for the factory setup of our sample of the DD-9 and we used them as the primary reference for our measurements. Jvc Dd 9 response was checked using Teac MTT and MTT test tapes and microsecond equalization, respectively and, as the accompanying graph shows, response from the Hz reference to the kHz limit of the tapes Hard Spanking Tube exceptionally flat-within ±0.
The rising bass response indicated is largely a result of using full-track test tapes Jvc Dd 9 quarter-track heads, as the flatter record-playback curves suggest. Bass undulations "head bumps" were particularly well controlled.
This is clearly the result of a conscious engineering decision by JVC, for their narrow-gap 1-micrometer playback head could provide "flat-line" response to 20 kHz. With a 0-dB input, the difference in high-frequency capacity between metal tape and ferric or CrO,-equivalent formulations is clearly shown in Jvc Dd 9 graph.
Using a 1,Hz tone recorded at a 0-dB level, we measured third-harmonic distortion of 0. Referred to this level, and on an unweighted basis with no noise reduction, their signal-to-noise ratios were With the same weighting and using Dolby-C, the respective signal-to-noise ratios Jvc Dd 9 to On a WRMS basis, our test-equipment limitations prevented us from measuring better than 0.
Suffice it to say that the DD-9 was about as free of wow and flutter as any deck we can recall testing. Dolby-C tracking, at least in our early test sample, introduced a gradual rise in response between 2 and 15 kHz.
The maximum discrepancy was about 3 dB at 15 kHz. However, since it appeared at levels of and below, the audible effect was not significant. At the line inputs a signal level of 83 millivolts mV was required to produce a 0-dB indication, and the output at this point was mV.
Microphone sensitivity was 0. Fast-forward and rewind times for a C cassette were 78 and 77 seconds. When Dolby-B was introduced about a decade ago it lowered the audible tape hiss so dramatically that for many it seemed to do all that needed to be done in this respect.
But switching in Jvc Dd 9 C-type Dolby, which not only lowers high-frequency hiss still further but also extends the noise-reduction processing down to the mid-low frequencies, instantly reveals how much remaining noise we had unconsciously learned to live with over the years. All controls and features worked perfectly, and mechanical noise was so low as to be, practically speaking, inaudible. JVC DD Read all.
Through virtually doubling the amount of noise reduction provided by the normal Dolby-B system or its JVC equivalent, ANRS , C-type Dolby is designed to meet the needs of today's wider-dynamic-range recordings without losing compatibility with existing Dolby-B-encoded tapes.
The JVC Model DD-9 is a two-motor, three-head cassette deck that includes, among its many advanced features, the new Dolby-C noise-reduction sakman.netted Reading Time: 9 mins.
This JVC DD-9 is a stereo cassette deck with Dolby B and C and JVC's ANRS and Super ANRS noise reduction, it was first sold by JVC in with a list price of USD $ and discontinued a year later.