Quote: Originally Posted by xnor the 1k res will give you approx. +3.5 dB around 100 Hz and up to +1 dB at 20 kHz (see the impedance chart at headroom) ...and this would be where, exactly?

Just chipping in here to keep up with this thread. I'm experimenting with running some HD600s direct from my power amp's speaker outputs, and have used series resistors from 390 ohms to 1k ohm. The latter cuts out hiss to a greater extent, and gives me slightly more to play with on the volume...

Quote: Originally Posted by HeadphoneAddict Okay, I'll be the first to say we need pics! Come on, get real! Birgir can't possibly post pictures of himself wearing Omegas, or anything else for that matter: he doesn't really exist, he is just the product of our collective...

Do I gather from this current tack that getting a good fart on the Omega II/SR-007 is something to be aimed for? And how does one achieve it (assuming one has a set of the Omegas to begin with!)? (I also assume that, unless one has adopted Birgir's BluTak modification, this farting business is...

Also, looking at the Stax history page, I see that the SRD-1 had variable bias! (If only we could do someting similar to get our ubiqitous SRD-7s to drive our Pro-bias Stax!)

Ah, that's interesting, and makes sense in terms of what the various SRDs actually look like. I'd always trusted the Stax history page, but clearly it's not totally accurate.

Quote: Originally Posted by spritzer It's a bit strange that Stax used a switch for that when the SRD-7's of a similar vintage all have zener's on the input of the bias supply to step down the voltage... Ah, I'd always assumed that the SRDs were sequential, so the -6 replaced the...

That's useful to know! But surely if the SRD-7 is left unplugged for an hour or two, any potentially lethal charges will have dissipated (and I don't recall any big capacitors in there in any case), so it should then be safe to work on? Or am I in way over my head here?

My SRD-7 looks so simple inside (relatively speaking) I can't believe it's a lifetime's project to up one of the sockets to Pro bias (especially as it's one of the older, mains-powered variants): I just need someone to tell me what to solder where!

Quote: Originally Posted by ericj I'm sorry, all i did was fiddle with the lugs where the wires connect. I didn't expect it to make a difference, but apparently it did. There are surely multiple causes of channel imbalance. Dirty or loose contacts seems to be one of them. Your...

Quote: Originally Posted by ericj I've been reluctant to talk about it, because it seems so unfair, but the channel imbalance in the SR-5 I got from Spritzer seems to have disappeared under similar circumstances. Eric Can you explain what you did to get rid of the channel...

Quote: Originally Posted by gimmish Hey Johnny blue were you the one who bought a T2? So what up with it? Not me, mate, I can't be doing with all those things that glow in the dark...

I'm still amazed that someone can buy a Stax system and never have come across RCA (phono) plugs and sockets before! Also, don't use a transformer: they degrade the sound quality which you've just paid good money to get! Search this thread for info on re-wiring the amp so you can use your...

Surely any Stax system running off a mini-jack (3.5mm or 1/8th jack) needs, at the very least, this!

Quote: Originally Posted by krmathis What's up guys? The Stax thread is such a quiet place these days...50 hours since the previous post. My hunch is that people think it's summer and have gone away on their hols, but here in the UK it's cold and rainy (plus, I lost out on an...

Just to be clear here: are we talking about a transformer to drive Stax earspeakers (certainly pro, but maybe normal bias also?) from a conventional hi-fi amplifier (like my SRD-7 or SRD-6s, but without the garbage)? I'm asking because most of you here go on about all these esoteric...

Quote: Originally Posted by ueyteuor guys, cant seem to find any info on making a srm252/srm212 portable.. can anyone direct me to the right place?? thanks Quick answer: you can run the SRM-212/252 in a car using a standard cigarette-lighter to DC plug adaptor (check polarity...

Please tell me this guy is being wildly over-optimistic! (£500 BIN: you're 'avin' a larf!)

See? Now I have a problem! I've diligently followed the Stax thread(s) over the years, and now this one on Lambdas has been started and it's going to end in tears... There's just no way 'conversation' can be limited to the one topic of Lambdas: already on this thread we've had SRD vs SRM-1...

Quote: Originally Posted by pdennis I have an interesting observation to make regarding the power supply for the SRM-212 amplifier I recently received. I have the original Stax wall wart and a transformer. Using my old analogue multimeter (EDIT: just calibrated multimeter on a 1.5v...

Ivor Tiefenbrun has been expousing this notion for about 30 years: I think the idea of 'source first' has now generally been accepted by all. (But stand back and watch what others round these parts may opine.)

Heartbroken: the SR-5/SRD-7 Mk.II combo mentioned earlier on this thread went for a relatively bargain price. I thought the interest shown on it here would drive the price up (I only wanted the SRD-7 Mk.II in any case). As it was, my auto-bidding software let me down (yet again) -- I was out...

Quote: Originally Posted by Saltuk I tried the 202 on the srm-1/mk2 sb after charging the earspeakers with 252A pro. And it sounds much better than before. And slightly better than driving the earspeakers with the 252A(mostly on bas,s it is fuller and deeper without getting muddy or...

Quote: Originally Posted by yale.reinstein Okay, I really don't know what I need. I have my 2050A on the way and I've been calling around for power supplies. The only way I can get a reversed polarity supply without moding one myself would be to get a regulated universal adapter, 1A...

If they were mainly manuals, I'd be interested (I've only got a Japanese manual for my SR-001 II system, and would like it in English), but most of the stuff on offer is brochures, which are available on the Stax site (see link above).