spritzer

Happy Birthday x2!!!

That sucks... The circuit is pretty robust but I'd check everything, especially the 450/550. Did you burn both boards?

Merry Christmas y'all!!! Only 40 minutes until go time here...

Happy Birthday Ken!!!

I'd guess an Egmont from the tubes used...

That was the Koss way of "improving" its models, make them ever more complex. The ESP9 is so bloody complex that it is just absurd. It also took them two major revisions (i.e. ESP9B) and countless minor ones to stop using a shared return path for the speaker input. Bye, bye bridged amps...

Nahh, I need moar powah. I'm going to build another F5 just because I have all the parts (integrated this time with a buffer and some gain) but the next large project will be what ever power amp KG comes up with.

It drives my Spendor S3/5SE's with ease but almost imploded when driving a Stax transformer box. I clearly need to build a bridged unit...

One thing I'm sure Jacob would enjoy, Hi-fi News tested USB cables in the latest issue. Guess what, the cheap ones were better...

See that red jumper wire in the terminal block? I'd say that is the voltage setting and this is picture of a 230V unit. Anybody have a US unit they want to open up?

Switches like these do exist, my Exstata has one and so do my newe transformer boxes. They are rated at 250V/3A and I get them at my local store. Check these out though...

If it is was Dalbani then they should be genuine. Some of the others I'm not so sure about...

It was just me, KG and Justin so it was never posted.

Justin should be able to help with the RK50.

I've got some dodgy C3675's as well but I haven't tested them. They did come from Farnell or rather their distributor here. Some of us already had a group buy for the now obsolete parts (2SA1968 and 2SC3675) so count me out. I have enough to last me a long, long time.

Looks nice Andy!!

Hehe, there are also two Dynalo's...

We always used silver mica with the KGSS/BH's so it should be just fine.

I'm building a M3 and the first thing I did was to install the jumpers to bypass the bb circuit. Variable gain may be a good idea but you can always put in a switch to do that. Hell wire up a 24V relay directly on top of the board for a short signal path.

The do sound ok but flat PCB's directly behind the drivers aren't doing them any favors...

Steve: Sorry about your loss... Jacob: That truly sucks.

The hassle is half the fun. It took a long time to refurb the ESP6, first I gutted them completely and installed a Magnavox cable to use them with Stax equipment. It was much later that I moved the internal parts into a separate box after going over them completely. In other news, I'm now listening to the first of two Lundahl LL1627 based transformer boxes. The transformers are setup for a 1:17 ratio and that works just fine with my Gainclone. I'll have to do some more testing with the flea powered stuff though as the other box will be used with only 8W. I'll post pics when I can bring myself to unplug it...

Be prepared for the pain!!! That is one seriously uncomfortable headphone. I'd recommend a ESP9 headband (the only way I could even wear them) and you will have to open them up and dig out the decomposing foam.

That's not one done by me. I designed those boards and that loop through setup works with only one version of the SRD-7's so I dropped it on later versions of the boards. My advice would be to move the wires so that the colors are correct or clean up the over all wiring inside the box and connect the transformers directly to the binding posts on the back of the unit. This would remove the switching setup and the umbilical but also results in a purer signal path where signal and power lines aren't mixed together. That's what I do to all the unit's I've modded plus installing better binding posts on the back. The 6SN7 and 6CG7 are the same so no issues with swapping them. The ECC99 is more like the ECC83 and similar variations. Welcome to my world.