Re: Anyone can tell me how to create vacuum tube like sound
these types of effects as thats what it is simply introduces 50 or 60Hz to simulate the grid sound that will leek into the audio as smoothing in thse amps is crap
and pickup is great from poor cables etc
what i do to get a vacum sound is wind a lenght of your input cable around a 28mm copper tube 2ft long
and then place a small bulb inside
the bulb is driven from a transformer the audio is modulated to the lamp also
but out of phase by 180 deg
you can use ac to drive the bulb but use a bridge recifier and no smoothing cap after it as your supply power
pull the lamp in and out the tube to increase or decrease the effect
you can also tune the modulation also add other noise to it maybe a room mike
so... ill draw the circuit if you like its quite simple
and very effective ...hoho
pm me if you want me to do this
forgot to add you can also add a control winding to the tube end and also cut slits in the tube
lots of things
did think of it as a commercial product however i protected the idea anyway
i found sewing machine bulbs are good and also fluresant tubes can be used but dont work as well as a long tube from the fishtank
the warmth in the sound is caused by room or ambiance triggered microphonic reverbiration
where the wires in the valves move around as the amp body moves and shakes
{microphonics} so its sits and hums but instead of it altering the sound or giving a feedback
all it does is alter the phase and interphasial relationships that the tubes plasma fields generate when its on and turned up a little
so... to add this just use the control winding and modulate that with inphase audio but taken from a tap on the bulb and amplified {i just also pass the lamp feed thru it}