Dual C 844 Stereo Cassette Tape Deck (1981-1984)

Description: Dual C 844Stereo Cassette Tape Deck (1981-1984)Made In Japan The pictures show the product for sale.Tested, recently serviced, well-functioning product. AC 230V 50Hz 50W440 x 335 x 112mm 9kg Attention!Pictures are better than words. My pictures show exactly the offered item. If there should be more, it will be mentioned in the description. I've written everything about the product. I accept no liability for damage resulting from transport. The shipping company is responsible for any damage resulting from shipping.The customs costs incurred must be paid by the buyer. The authority of the buyer's country provides information on customs costs. I do not accept complaints. I will not buy back the product sold! Only buy if you accept my terms! If you have any questions, please ask. Because this item is used / it will show minimum to moderate cosmetic wear and may have some noticeable, scratches, scuffs, dust, and other wear. We would also advise viewing each of the pictures to get a better idea of condition specifics.Private seller, no warranty, no return, no repurchase. GeneralManufacturer: DUALModel: C 844Type: Cassette Tape DeckYears of manufacture: 1981 - 1984Made in: JapanColor: ChampagneRemote control: yesPower consumption:Dimensions (WxHxD): 440 x 112 x 355 mm.Weight: 9 kgOriginal price approx.: 1'198 DM ConnectionsNumber of inputs:Line In: 40 mV, 580 kOhmLine In DIN: 0.5 mV, 6.3 kOhmMicrophone: 0.25 mV, 2 kOhmNumber of outputs:Line Out: 0 - 580 mV, 2 kOhmLine Out DIN: 0 - 580 mV, 5.5 kOhmHeadphones (6.3mm jack): 4 - 2'000 Ohm Technical Data:Audio heads: 31x combination head for recording and playback1x ferrite erase headMotors: 22 tape speeds: 4.75 cm / s and 9.5 cm / sSynchronization fluctuations: 0.03 %Tape types:Normal: Type ICr02: Type IIFeCr: Type IIIMetal: Type IVFrequency Response:Normal Type I: 20 Hz - 16 kHzCr02 Type II: 20 Hz - 17 kHzMetal Type IV: 20 Hz - 20 kHzDistortion factor: 2.0Signal-to-noise ratio:Without Dolby: 58 dBWith Dolby: 67 dBCrosstalk attenuation:Auto-Reverse: noDolby: yesCancellation attenuation: > 70 dBPremagnetization frequency: 100 kHzRewind time C-60 cassette: 65 seconds Special features:3-headtape memoryHeadphone jacks adjustable2 microphone jacks: 6.3 mm jack DUAL C-844 (1981) - The Dual Speed DualThe Dual C844 is a two-speed, three-head cassette deck introduced in October 1981. The C844 is equipped with a 2-motor solenoid operated 2-speed Dual-Capstan mechanism in an open cassette mechanism called by Dual "Direct Load & Lock Mechanism". The cassette mechanism also features two infrared light barrier that will stop the cassette, the moment you reach out for the tape and after reinserting the tape, playback will start automatically. There is also a transparent head cover that opens automatically the moment you switch the unit on. The deck is using Sendust heads in a 3-head configuration and it can handle all known tape types featuring a 6-position manual tape selector. The deck is factory adjusted for the following tapes: Fe position for BASF Super LH, FeI position for Maxell UD-XL I, Cr position for BASF Chromdioxid II, Cr II position for Maxell UD-XL II, FeCr position for SONY Fe-Cr and Met position for 3M Scotch Metafine tape. Obviously, any quality tape from established manufacturers can be used with great success. The highlight of the Dual C844 is the possibility to make recordings at a speed of 9.5 cm/s (double of the standard speed) for greater dynamics, extended frequency range and low drop-out rate. In this case the manufacturer published a 20-24000 Hz frequency response with all tape types and an overall 2 dB increase in signal-to-noise ratio. At standard speed (4.75 cm/s) the frequency response is as follows: Standard tape 20-17000 Hz, Chrome tape 20-18000 Hz, FeCr tape 20-19500 Hz and Metal tape 20-20000 Hz. The C844 incorporates both the normal Dolby-B and the more effective Dolby-C noise reduction systems and an MPX filter for recording from FM Stereo broadcasts. The beautiful large display section features a 4-digit Digital counter with two memory setting and two large VU-meters complemented by 4 LED peak level indicators. Further comfort functions include, music search, repeat, variable fader and separate input level control for source (line/DIN) and microphone with front microphone inputs. A very rare infrared remote-control system also existed. This system consisted of the RE 122 infrared eye that had to be connected to the deck and the RC 144 hand-held unit. This system is not even mentioned in the user manual and it was actually manufactured by German company Teladi. This deck was replaced first by the slightly modified and updated to Direct Drive motor C846 in 1985, while the last version was the CC 1462 from 1986. Both models still featuring the double speed operation. Technical data: Wow and Flutter for 4.75 cm/s: 0.07% (DIN)/0.035% (WRMS) and for 9.5 cm/s 0.04% (DIN)/0.02% (WRMS) | Dimensions: 440x112x355 mm | Weight: 9kg | Original sale price in Germany: 1,198 DM | While Dual is a German company this deck was "Made under Dual Specifications in Japan". Dual C844 Cassette Deck ReviewDual C844The Dual Model C844 is a two-speed, three-head cassette deck that incorporates both the normal Dolby-B and the newer, more effective Dolby-C noise-reduction systems. Its solenoid-operated transport uses a dual-capstan drive to minimize wow and flutter, and its six bias/equalization switch positions accommodate virtually any cassette tape without requiring the user to make special or individual bias-optimizing adjustments.Loading cassettes is faster on the C844 than on most decks, for it dispenses with the usual cassette-well door with rear-mounted slides. Instead, you simply press the cassette against hubs coming out of the front panel, tape opening downward. You can also remove the cassette during play simply by reaching out and grasping it by its sides. A photoelectric sensor retracts the drive mechanism the instant your fingers touch the sides of the cassette. To protect the sendust heads from dust or possible scratching, a rounded cover automatically slides into place when the power switch is turned off. (The cover may be overridden manually for routine cleaning and demagnetizing operations.) The illuminated window lets you see how much tape is left on a side.A four-digit electronic display is used for the tape counter, and the VU-type recording-level meters are supplemented by four peak-indicating LEDs. LEDs also signal the STOP, PLAY, RECORD, REPEAT, and DOUBLE speed functions. Microphone and line-level inputs may be mixed, though the playback output level is not adjustable. Memory rewind/play and timer activation are provided, as are an mpx switch (to eliminate possible problems when dubbing FM stereocasts) and an autospace button (to insert short silent spaces between selections). A music finder button works in conjunction with the fast-foward and rewind modes to skip to the beginning of the next selection or to return to the beginning of the one being played. As with a number of other Dual cassette decks, a fade edit feature is provided that will partially erase already recorded material so that the entrance and exit from the selection will sound much as it does when a professional broadcaster “fades in” and “fades out.” The rear panel of the Dual C844 contains the usual line-level input/output jacks, plus DIN connectors for European systems and an additional phono jack for a remote-control accessory.Laboratory MeasurementsThe playback frequency response of the C844 was measured with the new BASF IEC Standard ferric and Cr02 calibrated tapes, as these have the widest test range (31.5 Hz to 18 kHz) currently available. At 1-7/8 ips, as shown in the accompanying graph, all tones were well within ± 2 dB. Playback response could not be checked for the 3-3/4-ips speed since there are no calibrated tapes available for that purpose.Because of its multiple bias/equalization switch positions, tape selection was not critical, though best results were obtained with Maxell XLI-S (ferric), TDK SA-X (CrO2-equivalent), BASF Professional III (ferrichrome), and TDK MA (me(al). Almost comparable results were obtained with Lo-ran High Bias. The record-playback curves shown are for the two TDK tapes at each of the two speeds; these gave the flattest response when driven with high-level (O-dB) high frequencies. Using metal tape at the 3-3/4-ips speed produced a frequency response at this level comparable to what one would expect of an open-reel mastering recorder at 15 ips. At the customary — 20-dB level normally used for cassette-deck frequency-response measurements, the differences between the tapes were negligible out to the 20-kHz limit of the GenRad plotter, with only minor (and inaudible) wavelength-dependent effects in the extreme low-frequency region.Though the meters on the C844 are not marked with the traditional “double D” Dolby symbol, the Dolby level corresponded to 0 dB when checked with a test tape. Third-harmonic distortion at this level, using a 315-Hz tone at the higher and lower speeds, respectively, was 0.58 and 0.68 per cent for TDK MA, 0.8 and 0.86 per cent for TDK SA-X, 0.3 per cent (both speeds) for Maxell XLI-S, and 0.35 and 0.58 per cent for BASF Professional III—very good in every case. To reach the 3 per cent distortion point required increasing the recording level by a little over 6 dB at the 3-3/4-ips speed and by more than 5 dB at 1-7/8 ips.Signal-to-noise ratios, referenced to the customary 3 per cent third-harmonic distortion point and without weighting or noise reduction, measured 58.6 and 55.7 dB for TDK MA at the higher and lower speeds. The comparable numbers for TDK SA-X were 57.8 and 54.5 dB; for Maxell XLI-S, 58 and 53.8 dB; and for BASF Professional III, 60.7 and 56.3 dB. Using IEC A-weighting and Dolby-B increased the S/N to (listing the higher speed first) 70 and 68 dB (TDK MA), 69.2 and 67.1 dB (TDK SA-X), 69.8 and 65.8 dB (Maxell XLI-S), and 71.8 and 69.7 dB (BASF Professional III). Finally, using Dolby-C and CCIR weighting, the respective signal-to-noise ratios were: 83.8 and 82 db (TDK MA), 76.4 and 75.5 dB (TDK SA-X), 81.2 and 79 dB (Maxell XLI-S), and 81.2 and 79.5 dB (BASF Professional III). These are really quite extraordinary numbers for an analog cassette deck, for with Dolby-C, CCIR weighting, and metal tape they rival the specifications of a digital recorder!Dolby tracking error, using either the B or the C system, was extremely small—less than ± 1 dB up to 20 kHz at both —20- and — 30-dB levels—and there were no audible “breathing” or “pumping” side effects to mar the performance. Wow-and-flutter, measured with a Teac MTT-111 test tape, registered a very creditable 0.044 per cent (wrms) and 0.08 per cent (DIN peak-weighted). The line-level input sensitivity was 0.8 volt at 1,000 Hz, producing an output of 0.3 volt. A 0.5-millivolt (mV) input was sufficient to produce a 0-dB level, and overload of the microphone circuits did not occur until 160 mV. The VU-type recording-level meters over-registered by 2 dB when using 0.5-second pulsed tones and under-registered by 4 dB with the standard 0.3-second, 1-kHz pulses.CommentPlayback of top-quality In Sync (Connoisseur Society) and Mobile Fidelity prerecorded cassettes was excellent, and dubbing discs and FM broadcasts was a joy. Even so demanding a test as record-playback comparison of FM interstation hiss showed almost no high-end loss up to near O-dB levels when using metal tape at the 3-3/4-ips speed. This latter is, of course, a rather expensive way to record on cassettes and could only be justified by the most demanding material, but it shows what the deck can do.Interestingly, the 3-3/4-ips speed seemed to make a somewhat greater difference than did a shift from CrO2 to metal-particle tape, so if the shorter running time per side is acceptable, at current metal-tape prices the double-speed operation with Cr02-type tape might make economic as well as sonic sense. In any event, the solid construction and excellent sonic performance of the Dual C844 well justify its price.

Price: 1250 USD

Location: Makó

End Time: 2024-08-28T15:35:58.000Z

Shipping Cost: 250 USD