Tube Amp Archive

I made the Airbrake, but as I understand, this schematic is more suited to an 8 ohms load.. My speaker is 16 ohms, so when I use the Airbrake it is not very effective... So I gues it means I have to change the two main resistors.. Anyone know what would be the ideal values for a 16 ohms load?.. Thanks

Hey guys,

These resistor values are optimized for a 8 ohms load.. What would e the values for a 16 ohms speaker instead as the 8 ohms version isnt very effective...

Hi Dana,

Put me on the list too for when the kits will be available!!

Hugues

Ok guys, I bit the bullet, and went through the rest of the startup!!!!.. IT WORKS!!!... hehe... verry happy right now, but too bad it is late and I can't crank her up!!!

Thanks for the help, I am gonna post build pictures tomorrow!!!

Hugues

I don't think the bulb should be lit at all. It usually flashes then goes way down as the caps charge. Double check your PT wiring. I am using Toneslut's trannies.... Hmmm... Now I am a bit confused as some people says that it is normal for the bulb to be lit and you say it shouldnt... I am sure th...

Hi Guys!! My Express is finally ready to be fired up... I have been using Ron's bulb limiter with a 60w bulb, and just went thru the inital startup with only the power switch on and no tubes, no speaker... Maybe everything is fine, but before I go off standby I want to be sure.... Here are my concer...

Thanks guys!..

I chopped the tab off and did what Ron said... I used a star washer, between the switch and the inside wall of the chassis, and used a nut driver to tighten the nut, so the star washer 'bites' in the metal... Works perfect!!!

Hi everyone, My build is progressing well.. Now I am ready to install the stackpole impedence switch, but no matter how much I tighten the nut, the switch will loosen up dans rotate with the knob.. Did you guys use the anti-rotation tab on the switch, or you just chopped it off?.. That's what I am t...

Thanks Dana, Very good idea to put them there.. Too bad I didnt think to buy spare turrets to modify the board.. I will instead install the caps and resistors directly on the input jack and volume pot.. One small question then.. For the input jack, there is already a 1M resistor there.. Do you add t...

I am building my Express with a VVR, and even though I understant how to implement it, I seem to remember someone posted a Ceriatone Expression layout with this already in.. I am particularly interested in the mods required to add the 2 caps and resistors... I have been trying to find it for the las...

Hi everyone, I am at that crucial step when I am drilling the chassis to install the components of my Express build. I plan to install a VVR2 in there, but I find that the placement of the board is a bit tricky... I know Dana used can caps, but I plan to use the Mallorys... So, I think I might insta...

Thanks again Glen for your insight.. I was starting to consider the TL806 design, but I will listen to your advice as, after all, it is after watching your vids that I went for a TW..:).. The 2x12 detuned really tempts me, but I know it boosts volume which is a bit contrary to what I want to achieve...

Wow.. Thanks for all the info guys.. Glen: Dis you ever make a clip where you use that 1x12 instead of your usual 4x12?.. That would be very interesting.... I am thinking the same thing as you suggest regarding the detuned 2x12.. It could give me room to grow, but at the same time, maybe I"ll have m...

Hi everyone.. I am starting a TW build with VVR2 and also have a Scumback M75 65watts speaker on the way... Only bought one speaker because I dont what this thing to be too loud... Now, I am a bit undecided on what cabinet would be better.. Should I make a 1x12 closed back cabinet or use the speaker...

Francois,


I Pm'd you with a couple of questions!.. Thanks

Hugues