audio-talk

It's rare I use the A19 but I had cause to this morning so called in at Owston for a gander. It's quite a mess! I only had my crappy camera phone with me so the photos aren't great but those that have been will see how different it looks. I had a brief chat with the men and they've spent the last 2 ...

ed wrote:I've been pondering ever since...it's got to be done

Hurry up Ed, enquiring minds need to know .

Rather like Steve I got a shock pulling the ICs from the back of my breadboarded headphone amp. I was using my SB3 as source and wasn't aware that it took it's earth from one of the ICs. Blew the op amp too, but Dr Nick resurrected life when I thought the patient was a goner. With a nice little upgr...

Nearly as silly as 26 - 10Y - 300B

Well, 12A - 6C4C - PT15 would be very silly indeed .

I've got a few spare B5s if you need Phil - had to buy 20 from China.

Yeah, it would be good to hear the Quasars again - perhaps in the smaller room? Bits and bobs sounds interesting. Welcome back James .

It's on the A19 about a mile north of M62 J34. Opposite a plant auction yard, but that's another story involving motorway closures and emergency demolition.

Nick wrote:You can shunt 25-30ma with them. Though take into account the startup state where the loads drawing zero current.

Of course, that makes sense, duh!

How much current is it possible to shunt in this way? I've never seen it used in a power amp for instance, so I guess it's relatively low?

Beautifully authoritarian looks Steve. Without hearing it I would already know it kicks arse .

Spooky, I'm guessing you split this off from Colin's somewhat polluted last speaker build thread Nick? Is it worth adding the circuit for reference?

Nick wrote:To another 20H coke and then all the rest.

S P L A S H as Mike might say. I can see it now doh! So the shunts need the CLCRCR smoothing? I thought the VRs would have been good enough and I've thought about trying this for 26s in a pre stage - but is there something else happening?

It started life as Lynn Olson's Raven, but has morphed a bit since then. But it gives the general idea. It was how good I thought the balanced output stage sounded on the Buffalo DAC that started me down that route. http://www.sowter.co.uk/images.htg/raven.gif My Buffalo turned up today :). Wasn't ...

Nick wrote:

most of us remember the structural change that occurred 30 years ago.

Oddly it surprises me how many folk I talk to that don't.

Blimey, I'm getting old. I feel even older.