![]() ![]() Defeatable interstation muting and loudness circuit.Ĭomments by Todd Krieger in Vintage Asylum on Jat 23:50:18: Alternate channel selectivity 50dB, IHF capture ratio 2dB.Stereo separation Hz, Hz, with 0.6% harmonic distortion.FM sensitivity 1.8uV(IHF), S/N ratio 70dB.Hum and noise -65dB(phono input), -80dB(aux input).Overall frequency response 4-70k Hz +/-0.5dB(aux input).RMS power 45 watts per channel into 8 ohms(both channels driven) with 0.5% harmonic distortion at any frequency 20-20k Hz.Harman Kardon 930 Twin Powered stereo receiver very detailed HK twin powered 630 restoration with many schematic errors noted and corrected.Comments about the 630 and its preamp section.HiFi Engine page with manuals and ads for Harman Kardon 630.Phones/main/remote/both speaker switches.Has rear panel connectors for PRE-OUT and MAIN-IN.Has rear panel connectors for external Dolby FM processor.Defeatable interstation muting and loudness circuit.Independent power supplies for each channel.Stereo separation 1k Hz with 0.7% harmonic distortion.FM sensitivity 1.9uV(IHF), S/N ratio 68dB.Overall frequency response 4-70k Hz +/-0.5dB(aux input), IHF power bandwidth 10-40k Hz.RMS power 30 watts per channel into 8 ohms(both channels driven) with 0.5% harmonic distortion at any frequency 20-20k Hz.Total harmonic distortion: less than 0.5% at full RMS power across 20 Hz to 20 KHz Harman Kardon 630 Twin Powered stereo receiverģ0 watts per channel RMS into 8Ω (stereo) ![]() Nocturne (Seven Twenty 720, Two Ten 210, Two Hundred 200, Five Twenty 520, Five Thirty 530, Two Thirty 230, Three Thirty 330, Eight Twenty 820).Other Harman Kardon solid state receiver guides: Series 2 (1976-78) built by Shin Shirasuna.The models in this era came out in two waves: The looks of these were very similar to the prior 330abc minimalist series, but they used one power supply for each channel, hence the "twin powered" moniker, these power supplies were dual rail instead of single, and the Twin Powered series stopped using the cap-coupled design of the 330AB models and continued the direct-coupled design of the 330C. Note: If you have additional information on any of these models or have a great thread on one elsewhere on AK, send me a private message and I'll get your info inserted into the right spot in the top posts. This thread is a guide to those models, their specs, and pointers to schematics and restoration threads for each. The fourth era of Harman Kardon's solid state stereo receivers were the Twin Powered series: ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |