sbelyo

I once placed an order with them a few years back and chose usps priority to save $3. When it didn't arrive 4 weeks later they refunded the order. I re-ordered with UPS and got the stuff a few days later. Fast forward 2 months a package from Mouser arrives with the original contents via USPS

I'm starting to think that I should use something else. I think it's better

With a 5V reference will the GRLV work with an output lower than 12Vdc?

for V+: ((R8 + R7) / R7) x 10 (reference voltage of D5 - LT1021-10) for V-: ((R9 + R10) / R10) x 10 (reference voltage of D7 - LT1021-10) If I use this calculation and all resistors are 1.5K like the silkscreen, then use a 5V reference I'd get 10V That'd work for me because I need 9-12 Vdc. Now I'll see what the xformer is putting out in the way of voltage. it's 10.96 Vac with no load so that should be fine pulling 9 - 9.25 Vdc @ 0.80 A right?

I'm going to connect a transformer to the mains to see what voltage it puts out. My mains are a little high so it might be 10V or a little over for the lt1021 reference, do I need the 5 or 7V ?

Is a 9+9 30 VA transformer enough to pull 9V DC from a GRLV?

does anyone have a GRLV + board to spare?

That's what I was thinking

So should we match P to P and N to N? Or that plus P to N?

good question, it may say on the silkscreen. I'll look at the board Nope, I was hoping. We'd have to ask kevin

I'm going to order the transistors for this and the buffers. 1. I know that I have to match for hfe and Vbe but do I match all the N together and the P together or do I match N to P? 2. The highest hfe is the BC546\556 C, this only comes with formed leads. Will I need to straighten them out, and if so I'm guessing there's no issue with that?

excellent, I was on the fence about it but will get it now

How do you like that tester, was thinking of getting that to measure the transistors for the unbalanced/balanced board?

That was cool... if I'm reading that right, it's not matched N to P

After thinking about it for a few hours I remember doing exactly that when building the original 2 channel dynalo and dynahi. I only matched singles of P or N when using them and did not match P to N. I remember socketing the LED's and switching until I got close enough for the servo to swallow up what offset was showing up. What's the limit of the servo in the current designs of the dynalo and Dynahi?

So I took stock of what I had and I have a pair of 2sa1349. Now, my question is do I have to match the 2sa1349 to the 2sc3381? Or if I chose to source the K489\J689 as well do I have to match them with each other? I'd be using them in the newest Dynahi and Dynalo circuits.

interested too

Had to read that a few times to figure out what they were asking. The reviews seem good for that headphone in stock form at $25 I wouldn't touch them. I can't show those unicorm headphones to my wife, she'll want a pair

It looks like DVD audio extracter will, but I did not have it installed. I was using DVD Audio Explorer. That program will not unfortunately

it's working so far

Not sure my PM's are working, can someone send me one?

Asparagus for me

It's possible someone may have some GRLV boards left to spare. If you can't find a pair I was thinking of starting another group buy for them

yeah, could've very well been my subconscious. I'll take it either way

What's the range of the servo? I'm looking to build the new BIII pro and the new output stage uses servos to control the offset. When measured the balanced output is showing 0.5 mv, the se output is showing around 1mv. I know the gain will happily multiply that so that plus adding in what may show up from just building the amp I'm wondering if it's too much for the servo to handle