Denon DRA-825, DRA-1025 Service Manual
Specifications and Main Features
- DRA-1025R / DRA-825R Specification
Power Output
This DRA-1025R amplifier provides an output of 210 Watts on a 4 Ohm load at a frequency of 1kHz with a maximum harmonic distortion of 1 percent. On the other hand, its DRA-825R model provides an output of 140 Watts on a 4 Ohm load at the same frequency and same harmonic distortion.
Frequency response
The DRA-1025R and DRA-825R models have a frequency response that ranges from 5Hz to 40kHz measured with a total harmonic distortion of 0.05 % and simulates the use of both channels and an 8-ohm impedance.
- Sensitivity vs Impedance
Prior PHONO MM and PHONO MC tested their sensitivity and impedance with PHONO MM providing a sensitivity of 2.5 mV and impedance of 47 kOhm and for PHONO MC sensitivity of 0.2 mV at 100 Ohm. Also, where tested with CD, TAPE-1 with a sensitivity of 150 mV while retaining 29 kOhm and two composite TAPE 2 models.
- Noise level (IHF-A):
Conducted tests in regards to the watch and PHONO MM provided results of 94 dB with a 5.0 mV input, for PHONO MC they changed the input and maintained a 0.5 mV to get a 75 dB input while using: CD, TAPE-1 and 2 models resulted in a total of 83 dB.
- Control functions:
Having a bass increase of +10 dB with a frequency of 100 Hz while having a treble of +10 dB on a 10 kHz frequency.
- Volume control:
Volume control models maintain an adjustable amount and typically provide 10 different positions.
- Tuner section:
Using the same standards as before the FM reception operates on an 87,5 Mhz to 108 Mhz range and AM reception works from 520 to 1710 kHz and a total sensitivity of 0.9 and 10.3 dB(f) for stereo.
- Physical dimensions:
As seen above the width for the DRA is set on 434 mm, the height on 162 mm and depth on 394 mm with a weight of 12.0 kg.
- DRA-825R: 434 mm (W) x 162 mm (H) x 394 mm (D)
- Weight: 10.5 kg
- Power Supply: AC 110/120/220/240 V, 50/60 Hz
- Remote Control: Infrared Remote System
- Model: RC-605, requires 6V DC, 4 AA batteries
- Available Outputs:
- Pre-Out and Main-In terminals
- Speaker outputs for systems A and B
- Warranty: Changes in technical specifications and design for improvements can occur without prior notice.
Frequently Asked Questions
Q1: What is the power output of the DRA-1025R? A1: The DRA-1025R has a power output of 210 W +210 W at 4 Ohm.
Q2: Is it possible to connect more than one pair of speakers? A2: Yes, it is possible to connect two pairs of speakers with the DRA-1025R or DRA-825R.
Q3: The extension response range is? A3: The extension response range is from 5 Hz to 40 kHz for the DRA-1025R and DRA-825R.
Q4: Is there a remote controller packaged with the device? A4: Yes, the DRA-1025R and DRA-825R are packaged with infrared remote controller (RC-605).
Q5: What does the input sensitivity of the phono inputs specification? A5: The input sensitivity is 2.5 mV for MM and 0.2 mV for MC cartridges.
Q6: What power supply does the device require?
A6: In order to function, the device requires 110/120/220/240 V with a frequency of 50/60Hz.
Q7: What type of tuning does the FM section support?
A7: The FM tuner is capable of tuning into both stereo and mono in addition to offering automatic and manual tuning capabilities.
Q8: What is the weight of the DRA-825R model?
A8: The model DRA-825R has a total weight of 10.5 kg.
User Manual
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