What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.




H.H. Scott '59





Tascam DA-45HR DAT recorder

Here's the new standard in audio mastering technology. The Tascam DA-45HR is the worlds first 24-bit high resolution DAT recorder. It combines stunning audio performance with a rugged transport, advanced features and backward compatibility with standard 16-bit DAT.

A full audio I/O complement and word sync in/thru provide all the tools to integrate into any analog or digital studio of any size. Perfect for studios and mastering houses, the DA-45HR bridges the gap between the 16 bit and 24 bit worlds with a familiar interface you already know.

 

The 24 bit format DAT uses the same DAT tape that is used in standard DAT recorders. In order to store the extra data generated by higher resolution recording, the tape speed is doubled in HR (High Resolution) mode. So, when you're recording in 24 bit HR mode, a standard 120 minute tape will last 60 minutes. Obviously, 24 bit DAT tapes will only play back on a 24 bit DAT recorder like the DA-45HR.

The DA-45HR can also run just like a standard 16 bit DAT recorder, running normal speed and writing 16 bits to the tape. Reading and writing is fully supported, so you won't have to dig out a different DAT recorder for anything else.

 


Specifications:

Tape Speed:  SP - 8.15 mm/s; HR - 16.3 mm/s

Recording Time (120 DAT):  SP - 120 minutes; HR - 60 minutes

Recording Resolution:  SP - 16 bit; HR - 24 bit

Recording Sample Rate:  44.1 kHz, 48 kHz

Frequency Response:  20 Hz- 20 kHz ±0.5 dB (SP & HR modes)

Signal to Noise Ratio: 

Better than 105 dB Playback (SP)

Better than 112 dB Recording, 105 dB Overall (HR)

Total Harmonic Distortion: 

Less than 0.005% Playback (SP)

Less than 0.002% Recording, less than 0.004 Overall (HR)

Wow and Flutter:  Unmeasurable (less than 0.001%)

Channel Separation:  better than 95 dB (1 kHz at Full Scale)

Input RCA: 

-10 dBV, 50 k  

+6 dBV Maximum (2 V rms)

Input XLR: 

+4 dBu, 10 k   (-16 dB, -18 dB, -20 dB Full Scale)

+20 dBV, +22 dBV, +24 dBV Maximum

Output RCA: 

-10 dBV, less than 700  

+6 dBV Maximum (2 V rms)

Output XLR: 

+4 dBu, 27   (-16 dB, -18 dB, -20 dB Full Scale)

+20 dBu, +22 dBu, +24 dBu Maximum

AES/EBU I/O:  XLR-type, IEC60958 Type I (AES/EBU)

SPDIF Coaxial I/O:  RCA pin, IEC60958 Type II (SPDIF)

Headphone Output:  2x50 mW into 32  

Word Sync IN/THRU:  75   (auto-terminating)

Control Ports:  1/8" mini plug accepts RC-D45 remote DB15 Parallel I/O

General Specifications:

Power Requirements:   

120 V AC, 60 Hz (USA/Canada Model); 

230 V AC, 50 Hz (UK/Europe Model); 

240 V AC, 50 Hz (Australia Model)

Power Consumption:  40W

Dimensions:  482 x 140.5 x 368 mm (19" x 5.5" x 14.5")

Weight:  8.3Kg, 18.25 lbs.

Optional Accessories:  Wired Remote (RC-D45)


 

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