AudioSegment

NAD 4130

NAD 4130 is a digital stereo FM/AM tuner from the late 1980s.

The FM front end uses four varicap diodes and three 10.7MHz ceramic filters in the FM amplification circuit. The LA1235 IC is used as the FM IF discriminator, while the LA3390 IC is used in the stereo decoder circuit. NJM2043 op amps provide amplification and noise reduction, while the TC9137AP microcontroller controls the whole device.

The visual styling is distinctive of NAD's design from that era. Overall performance is quite good, with stable reception and very good sound quality.

Manufacturer: NAD
Status: Active company
Official website: nadelectronics.com

1. NAD 4130 - Front View1. Front View
2. NAD 4130 - Zoom View2. Zoom View
3. NAD 4130 - Left View3. Left View
4. NAD 4130 - Top View4. Top View
5. NAD 4130 - Back View5. Back View
6. NAD 4130 - Inside View6. Inside View
7. NAD 4130 - Inside Desk7. Inside Desk
8. NAD 4130 - Inside View8. Inside View
9. NAD 4130 - Bottom View9. Bottom View
10. NAD 4130 - On the Desk10. On the Desk
11. NAD 4130 - Replaced Parts11. Replaced Parts

General Specifications

Antenna Input: 75Ω & 300Ω
FM Tuning Range: 87.5MHz-108.0MHz
Input Sensitivity (50dB): 34.2dBf
Signal-to-Noise Ratio (65dBf): 75dB
Total Harmonic Distortion (1kHz): 0.09%
Frequency Response (30Hz-15KHz): ±0.5dB
Stereo Separation (1KHz): 50dB

Dimensions (WHD): 420×108×380mm
Weight: 4.25kg
Produced: 1985-1987
Initial price: 498DM

Factory Specification Sheet

Factory specification images are sourced directly from the device's original service manual or user manual. These documents are produced by the manufacturer and provide authoritative information on the product's specifications.

12. NAD 4130 - Factory Specifications12. Factory Specifications

FM Tuner

Measurements of the tuner section were performed using an FM signal generator, with its output fed directly into the antenna input. AM measurements were not conducted.

13. NAD 4130 - FR Mono - Left Chanel13. FR Mono - Left Chanel
14. NAD 4130 - FR Mono - Right Chanel14. FR Mono - Right Chanel
15. NAD 4130 - FR Stereo - Left Chanel15. FR Stereo - Left Chanel
16. NAD 4130 - FR Stereo - Right Chanel16. FR Stereo - Right Chanel
17. NAD 4130 - THD Mono - Left Chanel17. THD Mono - Left Chanel
18. NAD 4130 - THD Mono - Right Chanel18. THD Mono - Right Chanel
19. NAD 4130 - THD Stereo - Left Chanel19. THD Stereo - Left Chanel
20. NAD 4130 - THD Stereo - Right Chanel20. THD Stereo - Right Chanel
21. NAD 4130 - Separation Left Off - Left Chanel21. Separation Left Off - Left Chanel
22. NAD 4130 - Separation Right Off - Right Chanel22. Separation Right Off - Right Chanel
23. NAD 4130 - IMD Mono - Left Chanel23. IMD Mono - Left Chanel
24. NAD 4130 - IMD Mono - Right Chanel24. IMD Mono - Right Chanel
25. NAD 4130 - IMD Stereo - Left Chanel25. IMD Stereo - Left Chanel
26. NAD 4130 - IMD Stereo - Right Chanel26. IMD Stereo - Right Chanel
27. NAD 4130 - THD vs Frequency Mono - Left Chanel27. THD vs Frequency Mono - Left Chanel
28. NAD 4130 - THD vs Frequency Mono - Right Chanel28. THD vs Frequency Mono - Right Chanel
29. NAD 4130 - THD vs Frequency Stereo - Left Chanel29. THD vs Frequency Stereo - Left Chanel
30. NAD 4130 - THD vs Frequency Stereo - Right Chanel30. THD vs Frequency Stereo - Right Chanel

Known Problems

Most of the gray electrolytic capacitors were faulty, so they were all replaced. Additionally, the 7805 voltage regulator was replaced. A full tuner alignment was also completed.