Denon DP-7F Service Manual
Specifications and Main Features
- Drive System: Direct Drive with Servo Control.
- Rotational Speeds: 33 1/3 rpm and 45 rpm.
- Wow & flutter: Under 0.018% wrms (servo system)
- Wow & flutter: Under 0.03% wrms (JIS)
- Ratio : More than 75 dB (DIN-B)
- Rise Time: 2 seconds non faster for 33-1/3 rpm.
- Material: Aluminum die-cast;284 mm diameter
- Type of Motor: Linear drive motor
- Type of Motor: speed servo controlled by frequency phase detectors.
- Deviation: 0.01% or lower
- Characteristics: 0% (70 g tracking force ; outermost groove)
General specifications:
- Supply: 50/60Hz power supply as per label on the equipment
- Power consumption: 6 watts
- Measure: 365 (W) x 96 (H) x 360 (D) mm
- weight , Approx: 4 kilograms
Tone Arm Specification:
- Arm Type : Dynamically balanced, Semi integrated Straight Arm
- Length effective: 220 millimeters
- Length effective: 16 Mm
- Degree of tracking error: 3 Degrees
- Mechanism: Electronically controlled fully automatic
Cartridge Section(Only for those models with attached cartridge):
- Type: Moving Magnet (MM) cartridge
- Voltage: 2.5mV
- Frequency response: 200000 Hz to 20 kilohertz
- Setting Tolerance: 1.5 grams +/- 0.25 grams
Frequently Asked Questions
Q: Does it come with cartridge for the turntable?
A: The model offered in Canada and US do not come with cartridges
Q: What do you mean by a drive system in a turntable and what kinds do they employ?
A: There exists a servo controlled direct drive as a type of the drive system in a turntable.
Q: What speed does turntable operate at?
A: The turntable can operate at a constant angular rotation speed of 33-1/3rpm and also 45rpm.
Q: How do you define this characteristic and what would be the measure for a turntable?
A: The above mentions is said to be the amount wow and flutter of the machine and is below 0.018% wrms (servo system) and below 0.03% wrms (JIS).
Q: Does anyone know what the power requirements for the turntable are?
A: The power first and foremost is a critical metric as the turntable has consumption of around 6 Watts.
Q: How can turntable sizes differ so much and can you quote a turntable size?
A: Long answer short, yes, sizes will differ as the model dimensions quoted above are 365 (W) x 96 (H) x 360 (D) mm.
Q: With all the materials used, how much would the model for the turntable weight?
A: With a net weight of around 4 kilogram I would assume the turntable for the model would be lightweight.
Q: What can I expect when it comes to construction design of the turntable?
A: Expect a straight arm construction as the turntable uses a dynamically balanced semi integrated design tonearm.
User Manual
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