spritzer Posted March 28, 2009 Report Share Posted March 28, 2009 Thanks for the info. You could try swapping the damping layers from your Pro to your normal bias just for kicks (careful handling it, of course). There should be a pair of damping layers arriving at his door some time this week... Quote Link to comment Share on other sites More sharing options...
Deadneddz Posted March 28, 2009 Report Share Posted March 28, 2009 Well, it looks like I'm be trading with Blutarsky tomorrow for Naamanf's old O2 Mk1, and spending more time trying to decide between the Mk1 and my Mk2 again. I likely will sell one of the O2 eventually, but I'd like to hang onto both until I can listen to them via SRD-7 Pro out of my Eddie Current ZDT speaker-out first. I just don't know if I want to hang onto both until it arrives in June - the 6 week delivery date is pushed back a month. Hope you'll get a better chance to listen to the differences, as i don't recall you having that much time with them before you traded for the k1000. Would like to hear your opinion when you decide. Quote Link to comment Share on other sites More sharing options...
mypasswordis Posted March 28, 2009 Report Share Posted March 28, 2009 Birgir, nice of you. HeadphoneAddict, do you think listening through the SRD box will be better than through the GES? Just curious. Quote Link to comment Share on other sites More sharing options...
spritzer Posted March 28, 2009 Report Share Posted March 28, 2009 I'm not sure if I posted this here but since I had to update the pic today I might as well post it here: First off the disclaimer. This is live AC voltage you are working with so do this at your own risk. If you do not know what you are doing have somebody that does take a look at it. While I've tested the 240v and 117v versions and it works fine this is posted without any responsibility on my part for any damage due to Stax changing the design at some point. This works with my two C-series SRM-1 Mk2's and my B-series SRM-T1. This is only intended for those amps that didn't ship with a voltage selector plug. If it did come with one... then use that then! The picture above is how the rear of the socket should look like but Stax often changed them around to have the component only for one voltage. If it reads 100v (or 117v, 230v etc.) only on the back and there is no plug in the voltage selector socket odds are that the socket is wired differently. It needs to be changed to the above configuration or the amp can catch fire or worse. Since there are two white wires I marked them on the picture, AC power in and from transformer. The AC power comes from the power switch and is in the upper row. It is connected to 3 pins while the other white wire is in the bottom row and only connected to one pin. That one is connected to the primary of the transformer. The only other pin that has more then one connection is the gray one. You can connect to any of the joined pins as they are all the same. Here is the list. You need to put a jumper wire between different colors where the + sign is. There are always two different connections per voltage with either two or three different colors. 240v configuration Gray + Purple AC power in + Blue 220v configuration AC power in + Blue Green + Gray 117v configuration Blue + Purple + AC power in White + Gray 100v configuration AC power in + brown + green Gray + White Quote Link to comment Share on other sites More sharing options...
cetoole Posted March 28, 2009 Report Share Posted March 28, 2009 Birgir, nice of you. Yeah, Birgir rocks! Quote Link to comment Share on other sites More sharing options...
HeadphoneAddict Posted March 29, 2009 Report Share Posted March 29, 2009 Birgir, nice of you. HeadphoneAddict, do you think listening through the SRD box will be better than through the GES? Just curious. With the O2, the SRD-7 Pro and SRD-7 Mk2 have a lot of potential, but I've only been using low-end $200-300 speaker amps. I am looking forward to trying a much better amp with them. Last time I tried the O2 Mk1 they were easier to drive and sounded a little better with the transformer and 8.5 watt/ch Qinpu A-3, although the mk2 are nice off the GES ever since I changed my source to the PS Audio DL3 DAC. The O2 Mk1 just needed a little more pizazz or spark than they got from the GES. Listening to Diana Krall "Live in Paris" just didn't feel live with the GES, and vocals were a little recessed. However, classical with O2Mk2 and GES was pretty good. Switching the Mk1 to the transformer really woke them up. Quote Link to comment Share on other sites More sharing options...
GPH Posted March 29, 2009 Report Share Posted March 29, 2009 The O2 Mk1 just needed a little more pizazz ? Quote Link to comment Share on other sites More sharing options...
luvdunhill Posted March 29, 2009 Report Share Posted March 29, 2009 With the O2, the SRD-7 Pro and SRD-7 Mk2 have a lot of potential. maybe mod you transformer boxes with these: DAYTON WRIGHT SPEAKER ELECTROSTATIC LOGAN TRANSFORMER S - eBay (item 390029326226 end time Apr-07-09 08:04:32 PDT) Quote Link to comment Share on other sites More sharing options...
spritzer Posted March 29, 2009 Report Share Posted March 29, 2009 That should be enough to get the SR-007 going. For those that don't know, the Dayton-Wright speakers were driven in a sealed pocket of gas so that they could be driven at higher voltages then what normal air allows. That accounts for the truly terrifying voltages. Quote Link to comment Share on other sites More sharing options...
HeadphoneAddict Posted March 29, 2009 Report Share Posted March 29, 2009 maybe mod you transformer boxes with these: DAYTON WRIGHT SPEAKER ELECTROSTATIC LOGAN TRANSFORMER S - eBay (item 390029326226 end time Apr-07-09 08:04:32 PDT) When I was thinking they needed more spark or oomph, I didn't mean that much! As for pizazz - I mispelled it: pizzazz - Wiktionary Quote Link to comment Share on other sites More sharing options...
The Monkey Posted March 29, 2009 Report Share Posted March 29, 2009 When did Stax discontinue the 007 mk1? Quote Link to comment Share on other sites More sharing options...
mirumu Posted March 29, 2009 Report Share Posted March 29, 2009 When did Stax discontinue the 007 mk1? The Mk2 came out in the latter half of 2007, about November IIRC. I don't recall any gap of time where the 007 wasn't available for purchase so I'd assume the Mk1 was discontinued around the same time. Quote Link to comment Share on other sites More sharing options...
Hopstretch Posted March 29, 2009 Report Share Posted March 29, 2009 Did the mk1 come in black? Quote Link to comment Share on other sites More sharing options...
mirumu Posted March 29, 2009 Report Share Posted March 29, 2009 Did the mk1 come in black? There was the SR-007BL which I believe was only available in Germany. I'm not sure if it was made available anywhere else. Quote Link to comment Share on other sites More sharing options...
Hopstretch Posted March 29, 2009 Report Share Posted March 29, 2009 There was the SR-007BL which I believe was only available in Germany. Aber nat Quote Link to comment Share on other sites More sharing options...
deepak Posted March 29, 2009 Report Share Posted March 29, 2009 Did the mk1 come in black? Just black earpads and headband though. IMO the brown/champagne looks better than black/champagne Quote Link to comment Share on other sites More sharing options...
spritzer Posted March 29, 2009 Report Share Posted March 29, 2009 Just black earpads and headband though. IMO the brown/champagne looks better than black/champagne Now if they had only stuck with the dark brown cable used on the SR-Omega they would have looked even better. \ Btw. Nice avatar pic... Quote Link to comment Share on other sites More sharing options...
deepak Posted March 29, 2009 Report Share Posted March 29, 2009 Btw. Nice avatar pic... Shamelessly stolen I know Quote Link to comment Share on other sites More sharing options...
Duggeh Posted March 30, 2009 Report Share Posted March 30, 2009 There was the SR-007BL which I believe was only available in Germany. I'm not sure if it was made available anywhere else. Symmetry had them so they were available in the UK. Quote Link to comment Share on other sites More sharing options...
The Monkey Posted March 30, 2009 Report Share Posted March 30, 2009 Symmetry had them so they were available in the UK. Do you have the 007BL Doug? Quote Link to comment Share on other sites More sharing options...
bralk Posted March 30, 2009 Report Share Posted March 30, 2009 There was the SR-007BL which I believe was only available in Germany. I'm not sure if it was made available anywhere else. I bought a 007BL from Simplystax in UK. cheers Tom Quote Link to comment Share on other sites More sharing options...
Duggeh Posted March 30, 2009 Report Share Posted March 30, 2009 Do you have the 007BL Doug? rgr Quote Link to comment Share on other sites More sharing options...
electrathecat Posted March 30, 2009 Report Share Posted March 30, 2009 007BL was available here in the U.S. through Elusive Disc too, I believe. Quote Link to comment Share on other sites More sharing options...
mirumu Posted March 30, 2009 Report Share Posted March 30, 2009 Definitely more widely available than I'd thought then. I remember thinking back when I bought my O2s that the black variant might look good, but I wasn't particularly taken with the look when I saw it. Quote Link to comment Share on other sites More sharing options...
spritzer Posted March 30, 2009 Report Share Posted March 30, 2009 The "problem" with the brown models is that they aren't very photogenic. They look much better in person. Quote Link to comment Share on other sites More sharing options...
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