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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:1966 - 1969

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: Stacked/Inline

# 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.

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.

Denon Dh-710s Stereo - Stacked 1/2 Rec/play+1/4pb Reel To Reel Tape Recorder 12

 

 

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

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