Tried EL34's in place of 6L6's

[Tonegeek]

Mat,
The clip sounds very good! Is the clip of your new HRM or the NON-HRM that you built before?
thanks,
Whit

[mat]

Mat,
The clip sounds very good! Is the clip of your new HRM or the NON-HRM that you built before?
thanks,
Whit

Thank You It's the HRM.

[BobW]

I had no luck using a digital scope this weekend to see any real differences using a pair of 6L6s vs a pair of EL34s vs a mixed pair of each. Although a sine wave was used at the front end as the input signal, I will try again, injecting the signal directly into the PI.

[BobW]

Well the digital scope I borrowed (FLUKE 100MHz) is totally worthless. Even when using the averaging display, I still cannot get a clean signal to display on the scope. The dithering/sample rate results in spikes on the display that aren't there on an analog scope (cheap Tenma 20MHz). I was hoping to take display samples of the 6L6 and El34 pairs and combos for comparison, oh well.

[glasman]

I know these are ambiguous terms, so this weekend, I'll try to scope out the waveforms w/sine wave input and capture them on a digital scope.

Interesting experiment. I think you will find that the clipping signatures of the two tubes will be VERY different. The 6L6 should stay absolutely clean up to the point of clipping and the EL34 should start to compress the waveform more before they actually produce a hard clip.

Gary