e.oelberg Well-known member Joined Aug 14, 2004 Messages 791 Location Berlin Oct 20, 2008 #1 Hekko did anybody of you change a mv691 to 48 V ? I didn"t find any schematics floating around. I"m a bit tempted to change it to a ef732 based tube mic, it has allready 7 pole tuchel nicholas
Hekko did anybody of you change a mv691 to 48 V ? I didn"t find any schematics floating around. I"m a bit tempted to change it to a ef732 based tube mic, it has allready 7 pole tuchel nicholas
[silent:arts] Well-known member Joined Jun 4, 2004 Messages 5,231 Location Berlin, Germany Oct 20, 2008 #2 Hi Nicholas, I'm sure I have seen more than one thread about this in here, incl. schematics :grin:
M Marik Well-known member Joined Jun 3, 2004 Messages 1,743 Location Salt Lake City Oct 20, 2008 #3 This might be of help: http://www.groupdiy.com/index.php?topic=12142&highlight=mv692
B buschfsu Well-known member Joined Dec 31, 2004 Messages 760 Location jacksonville FL Oct 21, 2008 #4 i tried it based on a schem i found, didn't work out for me. i sent mine to gefell in germany and they fixed it plus they replace the body of the mic with a new one and replace the obsolete transistor. it was 100 plus shipping
i tried it based on a schem i found, didn't work out for me. i sent mine to gefell in germany and they fixed it plus they replace the body of the mic with a new one and replace the obsolete transistor. it was 100 plus shipping
e.oelberg Well-known member Joined Aug 14, 2004 Messages 791 Location Berlin Oct 21, 2008 #5 thats about the mv692, the mv691 is a different curcuit.
CJ Well-known member GDIY Supporter Joined Jun 3, 2004 Messages 15,725 Location California Oct 21, 2008 #6 The 692 is the Ribbon version. :grin:
M Marik Well-known member Joined Jun 3, 2004 Messages 1,743 Location Salt Lake City Oct 21, 2008 #7 [quote author="e.oelberg"]thats about the mv692, the mv691 is a different curcuit.[/quote] It is my understnading they are the same apart from switches. I might be wrong, though.
[quote author="e.oelberg"]thats about the mv692, the mv691 is a different curcuit.[/quote] It is my understnading they are the same apart from switches. I might be wrong, though.
Sredna Well-known member GDIY Supporter Joined Sep 19, 2007 Messages 1,002 Location Berlin, Germany Oct 21, 2008 #8 The 691 got a discrete FET without switches, he 692 has a hybrid thingy and switches otherwise similar.I can post schematics if someone's interested. Regards, Anders
The 691 got a discrete FET without switches, he 692 has a hybrid thingy and switches otherwise similar.I can post schematics if someone's interested. Regards, Anders
e.oelberg Well-known member Joined Aug 14, 2004 Messages 791 Location Berlin Oct 24, 2008 #9 Oh yeah, the schematics would be great ! nicholas
Sredna Well-known member GDIY Supporter Joined Sep 19, 2007 Messages 1,002 Location Berlin, Germany Nov 5, 2008 #10 Ok, sorry for taking some time. Here the schematics: MV691 http://www.twin-x.com/groupdiy/displayimage.php?pid=2731&fullsize=1 and MV692 http://www.twin-x.com/groupdiy/displayimage.php?pid=2732&fullsize=1 If you want, I can scan the schematics for PM750, PM860 and MV690 as well.. Regards, Anders
Ok, sorry for taking some time. Here the schematics: MV691 http://www.twin-x.com/groupdiy/displayimage.php?pid=2731&fullsize=1 and MV692 http://www.twin-x.com/groupdiy/displayimage.php?pid=2732&fullsize=1 If you want, I can scan the schematics for PM750, PM860 and MV690 as well.. Regards, Anders
G Gus Well-known member Joined Jun 3, 2004 Messages 5,264 Location n Nov 5, 2008 #11 Look at the mv691 and wavebornes circuit.
Sredna Well-known member GDIY Supporter Joined Sep 19, 2007 Messages 1,002 Location Berlin, Germany Nov 5, 2008 #12 Where to find it? (Did a search..)
Rossi Well-known member Joined Dec 11, 2004 Messages 1,532 Location Germany Nov 5, 2008 #13 I think this is the one Gus was refering to: http://www.groupdiy.com/index.php?topic=20144&postdays=0&postorder=asc&start=60 Actually, the earlier version here is perhaps a bit closer in spirit: http://www.groupdiy.com/index.php?topic=20144&postdays=0&postorder=asc&start=30 Yes any Gefell/RFT/Neumann (East) schematics would be appreciated! :thumb:
I think this is the one Gus was refering to: http://www.groupdiy.com/index.php?topic=20144&postdays=0&postorder=asc&start=60 Actually, the earlier version here is perhaps a bit closer in spirit: http://www.groupdiy.com/index.php?topic=20144&postdays=0&postorder=asc&start=30 Yes any Gefell/RFT/Neumann (East) schematics would be appreciated! :thumb:
Sredna Well-known member GDIY Supporter Joined Sep 19, 2007 Messages 1,002 Location Berlin, Germany Nov 5, 2008 #14 Ok, here we go: MV690 http://twin-x.com/groupdiy/displayimage.php?pid=2736&fullsize=1 MV710 http://twin-x.com/groupdiy/displayimage.php?pid=2735&fullsize=1 PM750 http://twin-x.com/groupdiy/displayimage.php?pid=2734&fullsize=1 PM860 http://twin-x.com/groupdiy/displayimage.php?pid=2733&fullsize=1 MT71S (Not EAST anymore...) http://twin-x.com/groupdiy/displayimage.php?pid=2737&fullsize=1 Hope it's of use for you. Regards, Anders
Ok, here we go: MV690 http://twin-x.com/groupdiy/displayimage.php?pid=2736&fullsize=1 MV710 http://twin-x.com/groupdiy/displayimage.php?pid=2735&fullsize=1 PM750 http://twin-x.com/groupdiy/displayimage.php?pid=2734&fullsize=1 PM860 http://twin-x.com/groupdiy/displayimage.php?pid=2733&fullsize=1 MT71S (Not EAST anymore...) http://twin-x.com/groupdiy/displayimage.php?pid=2737&fullsize=1 Hope it's of use for you. Regards, Anders
e.oelberg Well-known member Joined Aug 14, 2004 Messages 791 Location Berlin Nov 6, 2008 #15 Danke Anders ! this after noon I'm going to have a look at it ! nicholas
M Marik Well-known member Joined Jun 3, 2004 Messages 1,743 Location Salt Lake City Nov 6, 2008 #16 [quote author="Gus"]Look at the mv691 and wavebornes circuit.[/quote] Exactly my what I thought.
Rossi Well-known member Joined Dec 11, 2004 Messages 1,532 Location Germany Nov 6, 2008 #17 Thanks a lot, Anders!