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Thread: Dx amplifiers to be sold gonna be presented here.... Dx Classic II and DxS

  1. #1
    Compulsive builder destroyer x's Avatar
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    Dx amplifiers to be sold gonna be presented here.... Dx Classic II and DxS

    Here you have a text about the DxS:

    The one exceeds our spectations.

    THD less than 0.02% tipical 0.012%

    Output power 8 ohms = 143 Watts RMS

    Output power 4 ohms = 250 Watts RMS

    Sensitivity - 630 milivolts peak to maximum power (adjustable)

    Input impedance: 27K

    Flat from 3 hertz to 500 kilohertz.... minus 1 dB

    It is a full range audio power amplifier with four output pairs... also a three

    stage amplifier aided by CCS and current mirror.... a bootstrap circuit feed

    the VAS as my tradition to nice sonics amplifeirs..

    Hundreds sold in Brazil...very appreciated..no complains about...none

    complaint...zero complaint.

    Price is 100 USD, also has a linear power supply that cost the same value and

    can be shipped anywere in our world and cost can be calculated contacting

    uncle charlie using direct yahoo mail:

    carlos.eugenio1951@yahoo.com

    Use this email if you want estimate value, to obtain shipment price,

    ensurance or other details.

    Brazilian Postal system is slow...average to USA is 12 days..not working

    12 days after shipment arriving east and west coast.

    Shipment for USA is aproximatelly 45 USD.

    I have stock...so i can test it , register test in video, publish video and ship to

    you in a matter of two working days.

    Also i have power supply stock...pictures to be produced soon.... 40K

    microfarads using EPCOS capacitores, rail series inductive filters, voltage

    equalizers and capacitor discharge shunt included, high frequency filters,

    a snubber and leds to monitor output voltage (blink not blink) and fast on

    connectors type spade.

    Soon i will show you the supply in pictures....very busy now a days.

    Boys!..i will present the Dx Classic too....also gonna post 20 links of videos in english presenting them and many pictures.... soon i gonna start.... slowly because i am

    a hell busy now a days.IMG_1615.JPGIMG_1616.JPGIMG_1619.JPG

    regards,

    Carlos

  2. #2
    Compulsive builder destroyer x's Avatar
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    I am working hard to help to pay my daughter's college.... sweet daughter is studying Medicine and this is costing more than 2000 USD per month....i have not that money, so, i am working hard selling in Brazil and outside Brazil in order to complement money to face the expenses with that University.

    Sweet daughter is in the second year of Medicine... she gonna save lifes....she studies the entire day..very dedicated..gonna be an excellent professional.

    Here you have my picture.... made a few monthes ago and my daugher picture as presentation.

    regards folks

    CarlosProcessed me.jpgDoutora larissa jaleco.jpg

  3. #3
    .... Silvio's Avatar
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    So finally you found a way of posting videos in English that's is good to hear.

  4. #4
    Compulsive builder destroyer x's Avatar
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    Hello Silvio...thank you

    Boys!.... Nabuco Eletronica has produces a nice subwoofer filter and it works fine together DxS, then you gonna have a subwoofer system.

    Sem título1111.jpgSem título2222.jpg

    Nabuco Eletronica, a friend, has provided us a subwoofer filter with variable band pass adjustment and we can modify to be a bass filter, passing from 20 hertz to 500 hertz.

    I will obtain these pbcoards from Nabuco to offer you.

    here you see the schematic and an image from the filter....one potentiometer controls the bass or subwoofer level...the other one controls cut frequency that
    can be as low as 70 hertz or 150 hertz depending on the potentiometer position.

    regards,

    Carlos

  5. #5
    Compulsive builder destroyer x's Avatar
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    Also the small brother, a 100 W amplifier is beeing offered to whole world, the Dx Classic II.

    It is a cheaper amplifier and cost is 70 USD each assembled and tested pcboard plus shipping

    THD is less than 0.6%

    Frequency response better than 20 to 100K

    Sensitivity 630 mV peak to drive the unit into full power

    It can operate till 30 plus 30 volts AC power transformer ( 42 plus 42 DC) and gonna put out 100W at 8 ohms

    It can operate at 24 plus 24 volts AC power transformer (35 plus 35DC) and gonna put out 100W at 4 ohms

    Naturally can operate at 5, 6 and 7 ohms.... cannot operate with 2 ohms loads

    Sounds sweet..a lovely auido amplifier that gonna make you happy.... power supply pcboard also available.... price gonna be decided soon and gonna be lower than 70 USD each

    Payment using Pay Pal

    I can ship almost wide world....have to check you country...make contact to carlos.eugenio1951@yahoo.com if you need prices or more details

    Soon i will be posting a series of videos, showing them to you.

    regards,

    Carlos
    Last edited by destroyer x; 06-07-2018 at 01:58 PM.

  6. #6
    Compulsive builder destroyer x's Avatar
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    Here you see a presentation i have made to diyaudio and DIY SMPS too.

    DIYSMPS is my home too as i was one of the guys started this forum...i was in the first 100

    guys of this forum ....and i am honored to be one of the firstin between the hundred ones.

    Here you have a video..... sorry by the English...very poor i know...not speaking english for a long, long time.

    regards,

    Carlos

    Last edited by destroyer x; 06-07-2018 at 02:32 PM.

  7. #7
    Compulsive builder destroyer x's Avatar
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    Some of mine videos uses two languages in sequence...portuguese and english....soon i will be making english only videos while needed.

    regards,

    Carlos


  8. #8
    Compulsive builder destroyer x's Avatar
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    Here you have some information about Nabuco Electronics were we can find subwoofer filter...a low pass filter....it is possible i gonna buy some pcboards form him to ship to you together

    my Dx Classic II and DxS units

    Both amplifiers have power supply pcboard.... cost is less than 100 USD to the DxS and less than 70 USD to the Dx Classic II

    regards,

    Carlos


  9. #9
    Compulsive builder destroyer x's Avatar
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    Here you can listen Dx Classic II.... was made to be posted at diyaudio...but it is something can be good to DIY SMPS too.

    regards,

    Carlos


  10. #10
    Compulsive builder destroyer x's Avatar
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    Here you have the Dx Bi amplification system

    Video may explain...having doubts, please, post them

    regards,

    Carlos



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