In my land, a balanced signal has a "hot" and "cold" signals per chanel, the XLR connectors of this amp have the same ground wire of the jack connector, IMHO when one amplifier has the same ground wire in his output chanels, this amplifier has a SE output. I truly believe that Woo Audio...

Thank you very much to everyone for the information, my friend sent me the original cable and next week I will make the balanced cable. I don't knew that Apuresound sells these connectors. -- o -- Rodrigo

I haven't the original cable (my friend live in other city), I made a photo of a HD800 connector that I bought in Lawton Audio. I sent an email to Mark to order the connectors and asked for the pinout but he didn't answer. I think I have to ask my friend if he can send me the original cable...

Hi: I want to make a balanced cable for a HD800 of a friend, but I don't know the pinout of the connectors of these headphones I don't know if the "pin 1" is signal and the "pin 2 " GND, or if the connector body is connected to GND Can anyone help me? -- o -- Rodrigo

I'm very happy with my V1 cups, the sound with this mod. is better than the original SR-225 in all aspects, the big problem of this mod for me is the headband, I need some time to work in this problem and finish the V2 cups, at this moment I'm in the process of matching transistors (400-BC546...

These are the drawings of my V1 and V2 cups. -- o -- Rodrigo

Quote: Originally Posted by wahchile Excellent! I love how you did the aluminum ring instead of the plastic one also. Do you find the set screws backing out at all, or do they stay tight? I put "Loctite 242 threadlocker" in the screws, and never have been loosened. -- o --...

Quote: Originally Posted by wahchile This is the PS1000 that Todd thinks Pico may be copying: Pico's has a much larger chamfer with a different angle. Also, obviously his don't have the etching on the face. A 225 with an aluminum cup does not a ps1000 make. It is silly to even...

I can not at this moment. But I can say that my "v1 mod." weighs little more than PS-1, and the "v2 mod." (aluminum+wood) weighs more than the v1. I'm seeing pictures of the PS1000 cups and seem larger than my v2 !!!! -- o -- Rodrigo

I made these cups with the machine-tools of my job because my boss allows me to use them to make this DIY things for me, I can't make this cups or other things with these machines to sell to anyone. When I finish my cups, I will open a new thread in this forum and other forums with detailed...

"Rodrigo, Apologies but Grado have suddenly banned distribution of spares as of yesterday so I am not able to source any new spares... " Is JG nervous with our mods?¿?¿?¿?, I don't understand anything. -- o -- Rodrigo

Quote: Originally Posted by Xan7hos Hey Picodeloro, I've been following your work on the Spanish audio forums, great stuff, glad to know you're here @ Head-Fi! EDIT: Honestly, I don't see how what he is doing is different from what other DIYers are doing. I also did not appreciate...

Quote: Originally Posted by omegaman Correct me if I'm wrong, but these are the same modded Grados that were pictured well before the PS 1000 was reviled. http://www.head-fi.org/forums/f45/al...a-meet-365345/ Yes, this is my first mod. of my first Grado SR-225, I have two...

Quote: Originally Posted by Todd HI All, It seems to me that the shape and all of this enclosure is a copy of the PS1000 design from Grado Labs. I don't really think it is ethical to take the design of a manufacturer and copy it and then make it available to the public. How did you...

I have very interest in a pair of RS-1, and GS-1000, I made a mod for my SR-225 and I working in a "v2 mod" with aluminium and wood at this moment This drivers are perfect to my mods -- o -- Rodrigo