The Amp Garage

Another output tube you might want to look at is the 6P1P-EV (Very inexpensive). This is supposed to be a 6V6 equivalent in a 9 pin envelope. It has the same 12W plate dissipation limit as the 6V6, but 250V plate and screen limit. I think the screen limit should be observed as X-Ray images of the tu...

I give him credit for creating a revenue stream for himself, but "a life altering event"? I don't think so. The access to information contained in this forum dwarfs the amount of knowledge that could be imparted anywhere in one day. And TAG is monetarily free. BTW, a big thank you to everyone here....

I ended up deleting the recording it was so bad. Totally over driven mic input. The only mic I've got that looks like it might be reasonable is a Shure SM11 that had the connector cut off. I've also got a Shure FP12 Headphone Bridging Amp. I'm wondering if they would work well enough together to giv...

Zeners are noisy, especially around 6.8V where the technology transitions from true zener to avalanch.

The dynamic impedance of the parallel LED strings is very low and this contributes to rapid overlaod recovery.

Sy has a good write-up on the RLD amp here,

http://syclotron.com/?page_id=3

LEDs are not constant current, they are constant voltage. So, I was wrong to state they would not work well for class AB. They should work fine.

The combination of CC anode load and LED constant voltage cathode bias will produce a very linear (low distortion) output.

If you are talking about replacing R10 and R20, go for it. In an audio amp it is a great way to reduce distsortion. In a guitar amp, you will have the minor issue that you can not bypass it with a cap to control frequency response. If you are talking about replacing R17 and R27 with diode arrays ala...

44 pin PLCC in the front is probably the micro. The flatpack in the far right looks like it has leads on two ends, so I suspect it is flash EEROM. The array in the center could be the switches. After thinking about it, I'm not sure what is going on. I haven't used a PLCC in over 10 years. Everytahin...

With 6 pickups you need four switches each for a total of 24 switches. Two switches on each connection allow each end to be switched to ground or feedthrough, so you can swap phase. You can get 80 ohm on resistance switches in quad packages, so only 6 packages to do all the switching. CMOS switches ...

Solid state switch matrix using CMOS analog switches. Microprocessor based with a series of switches monitored by the micro controlling the switch matrix. With that comes the possibility of adding different capacitor values in a network to control tone as well. If done properly, no amplifiers are in...

Tip for punching and cutting aluminium/aluminum Use WD-40 as a cutting fluid.

It is the ONLY good use for the stuff, other than as a cutting fluid for Plexiglas and lexan.

I'm going to a "Pig Pickin" tomorrow down in NC and was thinking of taking my 5F1 and Russian TrainWreck inspired amp. The only way of making a recording will be with a cheesy Nikon Coolpix that is prone to over-driving the audio. Is this worth taking and trying to make a recording? Or a waste of ti...

Sounds like marketing BS to me.

Could be 6V6 related, but the EL84/6BQ5 is supposed to have an American sound or British sound depending on who you listen to.

Ya know after reading through UL60065 and UL600950, there might be another reason to pour epoxy over a board.

Bummer! I grew up in SC (Cayce) and was a School Bus Driver in HS (1970). I don't know if they still use student bus drivers, but if they do there is a good reason to call school off with the first sign of snow or sleet. 18 year olds have no experience on driving a school bus loaded with 75 kids on ...

I made a drill jig to allow me to drill all holes including vent holes around the socket. Then I use a GreenLee punch to open it up for the socket.

http://www.diyaudio.com/forums/equipmen ... g-jig.html