Wednesday, March 9, 2016

we need some heat over here : updating the speaker load simulator

spkrld sim was getting pret warm after two plus hours of playing
which we no like.
even with master volume (100W op mode) at three, heat persistently accumulated past heatsink ability to dissipate, which was unforeseen.

decided to add small 12v fan
powered by 9v
boosh.

power cell hiding in it's knoll.  pain in the ass to change.  





Friday, March 4, 2016

Innovation, intonation, nonsense.

Built a prototype of this thing
that I wanted to exist
and did not
when I get a provisional patent, you can buy it from me.

Standing here the other night, with my guitar strapped on, and a screwdriver in my hand, I decided to finally tackle a task that's been looming high in my mind for 10 years.
Learning how to set intonation on any geet
took about half an hour to grasp
and complete.

Turns out a bunch of my shit was way out of intone, all sharp.
If you haven't done this, do it.

-Was getting a hot buzz out of the amplifier.  swapped around the EH tubes, and rotated in a couple of JJs... buzzing persistant and strange.  Gut feeling was preamp tube or preamp tube socket, as

I've historically had problems with the pretube socks my entire relationship with this amplifier (internally, it is obvious that cereal yogurt was left in chassis unattended.        )
Had to totally wreck one to get it out
which reminds me

*No food or drink around the modern precambrian tech

I have to pull out the preamp PCB and properly install R1 so I don't feel guilty about playing guitar with such a shitty solder job inside.  Hopefully I don't get carried to unfamiliar by harpy resolder distraction.

*do not lube your straploks with graphite.  it will pack in and screech like a dick vulture

---postedit---

I actually got pull all the knobnuts, remove the prepcb, resolder R1, reassemble, and practice, without a failure or detractive noise.  First time ever.

+rotated EH in to valve 1

+rotated JJ in to valve 2

-/+ left china in valve 3

got some ronk compression grind from her tonight.  really satisfismo with the tones coming through the silent tube throbs.