Does anyone have experience with this Sanken Power Amplifier Module?
The only "name" I can find for it is "DX-45M" on the outside of the box.
I don't seem to find anything with a search for "diyaudio DX-45M" so hopefully it is ok to start a new thread.
I would like to try an amplifier with Sanken outputs to see how it compares to the K1047 based amplifiers I have tried. (MX50X2 & L20.5) After the comparison I might order some of the still available MT100 smaller Sanken devices from Digikey to try in my other projects.
It is described as "SanKen 1494/3858 High Power HIFI Audio Amplifier Board Dual Channel 450W+450W Stereo Amp Mono 800W Amplifier Board For Sound DIY"
It is attractive for me for a quicker project since the heatsink, power filters and speaker protection are all integrated.
If you have this amplifier please let me know what you think of it and if you would recommend I try it. Also if you have it do you have a schematic? Any idea of the internal amplifier structure/type? Such as Blameless or something else?
Also, has anyone more extensively tested and evaluated clone SanKen 1494/3858 devices? I ask since I would not be surprised if this came with clone devices. It is also why I would like to find someone who owns this amplifier and can offer their first hand experience.
The only "name" I can find for it is "DX-45M" on the outside of the box.
I don't seem to find anything with a search for "diyaudio DX-45M" so hopefully it is ok to start a new thread.
I would like to try an amplifier with Sanken outputs to see how it compares to the K1047 based amplifiers I have tried. (MX50X2 & L20.5) After the comparison I might order some of the still available MT100 smaller Sanken devices from Digikey to try in my other projects.
It is described as "SanKen 1494/3858 High Power HIFI Audio Amplifier Board Dual Channel 450W+450W Stereo Amp Mono 800W Amplifier Board For Sound DIY"
It is attractive for me for a quicker project since the heatsink, power filters and speaker protection are all integrated.
If you have this amplifier please let me know what you think of it and if you would recommend I try it. Also if you have it do you have a schematic? Any idea of the internal amplifier structure/type? Such as Blameless or something else?
Also, has anyone more extensively tested and evaluated clone SanKen 1494/3858 devices? I ask since I would not be surprised if this came with clone devices. It is also why I would like to find someone who owns this amplifier and can offer their first hand experience.
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I recently created a sound plant with this module, the transformer is from a Sony hcd-gt444 gives 40 or 40v at its output at more than 8 amps which is enough for the module, currently I have it configured for mono in its jumpers, the truth is that it is quite powerful, it moves two 15-inch speakers without any problem, including a Peavey Black Widow and also the 2 tweeters belonging to each speaker, honestly the investment is worth it, I personally recommend it, but you have to use forced ventilation, hopefully turbo fans because without these it heats like hell 🤣🤣 The one I currently have uses Sanken 2SA1494 and 2sc3858 transistors, the box I made it with is from a Harmann Kardon, anyone would believe that it is a vintage equipment and that it would burn when trying to move the 2 15-inch speakers but what they don't know is the monstrosity that is inside that box 🤣🤣 Greetings from Costa Rica and I recommend the module with my eyes closed, it is quite good, the truth is that
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El amplificador obviamente es clase AB, los electrolíticos son de 50v a 3900 uF, los drivers son el h649a y el h669a, utiliza un puente rectificador de 20 amperios, he intentado buscar el diagrama en Internet pero no hay información al respecto, utiliza una placa rectificadora redonda de 1 amperio en el protector de altavoces, creo, el par diferencial está formado por transistores 2n5551, los fusibles son de 8 amperios, las resistencias cerámicas son de 5 vatios a 0,22 ohmios y utiliza 2 zener de 24v, incluye una red zobel y eso sería prácticamente todo el sistema, el bias está regulado en torno a los 351 mv, esa es toda la información que os puedo dar del modulo DX-45M.
Please post in English.
The amplifier is obviously class AB, the electrolytics are 50v at 3900 uF, the drivers are the h649a and the h669a, it uses a 20 amp bridge rectifier, I have tried to find the diagram on the Internet but there is no information about it, it uses a 1 amp round rectifier plate in the speaker protector I think, the differential pair is made up of 2n5551 transistors, the fuses are 8 amps, the ceramic resistors are 5 watts at 0.22 ohms and it uses 2 24v zeners, it includes a zobel network and that would be practically the entire system, the bias is regulated around 351 mv, that is all the information I can give you about the DX-45M module.
The amplifier is obviously class AB, the electrolytics are 50v at 3900 uF, the drivers are the h649a and the h669a, it uses a 20 amp bridge rectifier, I have tried to find the diagram on the Internet but there is no information about it, it uses a 1 amp round rectifier plate in the speaker protector I think, the differential pair is made up of 2n5551 transistors, the fuses are 8 amps, the ceramic resistors are 5 watts at 0.22 ohms and it uses 2 24v zeners, it includes a zobel network and that would be practically the entire system, the bias is regulated around 351 mv, that is all the information I can give you about the DX-45M module.
