Francisdemarte,   DIP are working right. I have tested with multimeter the on/off function.      I'm in Spain. Barcelona.      You think that MKP1837 (22nF) capacitors round the opamp can have any problem? Its the only one that I have not change.       

Hi francisdemarte,       I tried with three differents op-amps : stock lovely 2134, stock lovely 2111AM and an original 2134 (wich appears in the photos) with the same result and same poor amplification.      

   Thanks for your posts.            Chetlanin, you say that the main problem maybe is in the op-amp.     But ....Where is the problem? All components are in place. I have reflow the solders... resistors and capacitors are in right values.       What I can see in the PCB?     What I...

Hello,        I checked all the components in place and value. I think that all is right in this sense.        The only thing that I dont have tested is Pot ALPS.  What is the easiest way to check it? It´s necessary remove from PCB?        I want to thank to everyone the valuable...

  Hello,       here I am with my problem.       I have reviewed all solders. I have tested dip switches for gain function properly off and on.       All components are in place. I have measured voltages with digital multimeter:        - BD140 BD139:              collector-base .-...

  I still have the problem.   With the gain at 0db. I have not amplification. I have to put the volume to maximum to hear the same volume as I listen to my Sansa Clip + directly. Even a little less with "lovely".    With the gain to 10, 18 and 20dB I have changes in the output sound. I...

Hi Francisdemarte, 0db = lovely cube only pass the sound without amplification? Its that true? I have doubts about that ...

Hi francisdemarte, Tomorrow i will can show someter picture My source: Sansa clip+ Gain: 0db Its a must make the solder on two sides of PCB? I make the solder only in one side (upside resistors and downside rest of componentes). Thats right or is an error?

  A greeting to everyone.    I just received the Kit of Lovely Cube this afternoon.   I have welded all components. The problem is that the sound its very low even to max. volume. I use 150ohm. headphones and the volume its same as directly connected to Ipod.        All three leds...

I think to use panasonic FM capacitors 470uF/35v. (Very low impedance) There are good capacitors for that?.

Fixed bug.... are 10R...     Wirebound best that Metal Film? ..... OK ....

  Blablabla, beautiful answer and very useful for me. Thanks.   a) I think "Lovely Cube" use 10R/1W Wirebound Resistors and "Original BCL" use Metal Films Resistors. Its that true?   b) This green capacitors are 0.1uF/400V. in the Lovely Cube...

For example, this image. Make zoom. You will see 400v. http://www.alicemagicbox.com/image/lovelycubenichicon01.jpg

  Ok,        I followed the thread from beginning to end.       I have some doubts about some components:       a) The four output resistors 10R/1W 1%. Is it better to be "Metal Film Resistors" or "Wirewound Resistors"? . I have both (Vishay) types and I have no idea what to ride...

    Great thread !!! Thanks for your answers ...     I bought the "LovelyCube" for the fun of being able a "exact" copy of Lehmann BCL. That's my goal.      That is the reason why I like to know what type of components is mounted in the Lehmann Original. Some are named along the...