Technical Details
Brand: Denon
Model:DH-710S
Category:Super High Fidelity
Application:Semi-Pro
Electronics:Solid State
Equalization:NAB
Country of Manufacture:Japan
Release dates:1974 - 1978
Tracks:1/2 Rec/Play+1/4PB
Speeds: 7 1/2, 15
Max Reel Size("): 10.5"
Number of heads: 4
Dimension: 17.7 x 21.6 x 10" - 450 x 550 x 255 mm
Head Composition: Permalloy
Head Configuration: Stereo - Stacked
# Motors: 3
Auto Reverse?:No
Voltage(s): 100v Japan, 110-120v, 220-240v, Multi
Outputs: RCA, DIN
Frequency Response:7.5 ips 30-18,000 Hz, - 15 ips 30-22,000 Hz, ± 2 dB
Wow and Flutter:7 1⁄2 ips ± 0.025 % - 15 ips ± 0.02 %
Signal-to-Noise Ratio:66 dB
Sound quality rating:8 / 10
Long-term reliability rating: 8/ 10
Weight: 61.7 Lbs. - 28 kg
Additional Details
Description
Manufactured by Nippon Columbia, this professional machine was offered in two similar variations Denon DH-710F & DH-710 S
The 2 Preamps (record/playback electronics) are separate from the transport, bearing some similarity to the Teac A-7300 variations.
A half track recorder with a quarter track playback head, this machine was very versatile. The 710s was the chosen machine for the legendary audio designer, Tim De Paravicini and was very common in Japanese radio stations and recording studios. A remarkable achievement for a company that produced relatively few R-R models.
A stranger to the North American market, it appears that the 710’s were only available in Japan and priced at ¥348,000 in 1974.
Direct drive two-capstan system
The direct drive capstan motor uses the same servo system as the DENON DN-302F (commercial turntable) DP-3000, using a magnetic recording and playback method for speed detection. The two-capstan drive system uses a subcapstan connected to the motor shaft by a belt. This makes it extremely stable against variations in tape tension and load fluctuations during start-up.
In addition, the distance between the two capstans is shortened so that modulation noise caused by longitudinal vibration of the tape is greatly reduced.
Additional Info
Heads (4) 1/2 Track Record, Playback & Erase – 1/4 Track Playback. Rec & Play- Sendust – Erase- Ferrite
Motors (3) 1 x AC-Servo Capstan, 2 x 6 Pole AC-Servo, direct drive capstan and sub-capstan
Max. Reel Size 10.5″
Tape Speeds 7 1⁄2 – 15 ips
Wow and Flutter 7 1⁄2 ips ± 0.025 % – 15 ips ± 0.02 % WRMS with Electronic tape tension servo
Frequency Response 7.5 ips 30 – 18,000 Hz, ± 2 dB – 15 ips 30 – 22,000 Hz, ± 2 dB
Signal to Noise Ratio 68 dB at 15 ips
Total harmonic distortion 1 % at 15 ips
Rewind/F.F Time (740m Tape)- < 2 Mins
Voltage selector on back of transport for 100v, 120v, 240v
Dimensions Transport– Width 505 x Height 420x Depth 310 mm (With cover) or
19.9w x 16.5h x 12.2 inches
Pre-Amplifiers– Width 490x Height 180x Depth 330 mm (with cover)
or 19.3w x 7.1h x 13 inches
Weight Transport– 28 kg or 61.7 Lbs Pre-Amplifiers– 8.5kg or 18.7 Lbs