| Originally Posted by padam /img/forum/go_quote.gif It is designed for the Lambda Pro (not for the 404) and even with that it has its negative effects to a sound in exchange of the soundstage increase, I would skip it. |
| Originally Posted by chi2 /img/forum/go_quote.gif Cosmopragma, I do appreciate the 4070's sound signature, too. They have excellent extension at both ends of the spectrum, they are beautifully balanced and almost completely lack the Lambda's upper mids/lower highs peak. Mids are somewhat more forward than with the Omega 2s (I and II), but that is exactly what makes me prefer them for listening to female jazz singers. While it's amazing how open and free a closed (electrostatic) phone can sound, I perceive their soundstaging and imaging to be one of their relative weaknesses. They seem to be lacking somewhat regarding the third dimension, that is depth. The fit issues can be improved significantly by bending the arcs. However, there's definitely no cure for the weight. And as not only their acoustic but also their thermal isolation is great, I prefer listening to them in other seasons than summer. 
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| Originally Posted by spritzer /img/forum/go_quote.gif There is a 240v setting on the 717 (and every other Stax gear) and it will run cooler. You need to take off the back of the unit and rearrange the metal fuses which set the voltage. For 220v there should be a fuse in spot 3 and 5 but convert it to 240v you need to move the one in the nr.3 spot over to nr.2. The numbers are printed underneath the fuses. All the necessary caveats apply so you may get shocked, the amp catch fire etc. but I've used this on many Stax amps and it works. |
| Originally Posted by spritzer /img/forum/go_quote.gif There are close to 400v sitting on those capacitors so do indeed be careful. One bit of news for the Stax fans. I've almost finished drawing up a SRD-7 Pro bias supply PCB which should fit every SRD-7 unit and equip it for Pro bias. While this is for my own use I may sell off some of the excess boards if there is interest. |
| Originally Posted by spritzer /img/forum/go_quote.gif There is a 240v setting on the 717 (and every other Stax gear) and it will run cooler. You need to take off the back of the unit and rearrange the metal fuses which set the voltage. For 220v there should be a fuse in spot 3 and 5 but convert it to 240v you need to move the one in the nr.3 spot over to nr.2. The numbers are printed underneath the fuses. All the necessary caveats apply so you may get shocked, the amp catch fire etc. but I've used this on many Stax amps and it works. |
| Originally Posted by lyricalmoments /img/forum/go_quote.gif Thanks spritzer
Yes, there's a metal jumper (that looks like fuse) on Spot 3 (purple) and 5 now. So for 240v it should be Spot 2 (Green) and Spot 5 (brown)? Will try it out tomorrow morning, just unplugged the amp from the mains so that the caps can ease off a little before I attempt anything |
