IvIark wrote:Or do what they did in the Hot Cake and put an 8V2 zener between supply and ground.
my hotcake was still fizzy as hell.. did not like .. which is weird cos I like hot.. and I love cake.
IvIark wrote:Or do what they did in the Hot Cake and put an 8V2 zener between supply and ground.
Ronsonic wrote:...the lower the stakes the more vicious the combat.
atreidesheir wrote:He should be punched in the vagina.
astrobass wrote:Manfred wrote:Ripdivot wrote:All those op-amps have been tried and they don't help the fizzy decay. I have had both Hotcakes and they have the same problem.
thanks, I see there is no quick fix to solve the fizzy decay problem.
Sure there is. Put a diode in.
The op amp rail is at 4.5V, right? Most of the tone you're getting from having one side diode clipped and the other rail clipped comes from the fact that you have asymmetric clipping.
So, use a diode with a 4V forward voltage drop. Anything up to 4.4V should be fine. You want a bit of margin as if you're using battery power, the rails will get closer as the battery decays. If you're using DC then you just need to use your multimeter to check how far the rails ACTUALLY are in your build to verify where the threshold should be. 4V is probably safe though.
Alternatively, if you put diodes in series, their voltage thresholds add up. LEDs clock in around 1.7V, 1N914s and 1N4001s are around 0.65V, so two LEDs and one common silicon diode should set you at about 4V.
This WILL change the sound slightly, but it should be quite close to what you have, minus the fizz. It's easy enough that it's worth trying. You could even use a switch to connect/disconnect just the 4V diode (or the cumulative 4V diodes) to hear the precise difference between the two.
astrobass wrote:Manfred wrote:Ripdivot wrote:All those op-amps have been tried and they don't help the fizzy decay. I have had both Hotcakes and they have the same problem.
thanks, I see there is no quick fix to solve the fizzy decay problem.
Sure there is. Put a diode in.
The op amp rail is at 4.5V, right? Most of the tone you're getting from having one side diode clipped and the other rail clipped comes from the fact that you have asymmetric clipping.
So, use a diode with a 4V forward voltage drop. Anything up to 4.4V should be fine. You want a bit of margin as if you're using battery power, the rails will get closer as the battery decays. If you're using DC then you just need to use your multimeter to check how far the rails ACTUALLY are in your build to verify where the threshold should be. 4V is probably safe though.
Alternatively, if you put diodes in series, their voltage thresholds add up. LEDs clock in around 1.7V, 1N914s and 1N4001s are around 0.65V, so two LEDs and one common silicon diode should set you at about 4V.
This WILL change the sound slightly, but it should be quite close to what you have, minus the fizz. It's easy enough that it's worth trying. You could even use a switch to connect/disconnect just the 4V diode (or the cumulative 4V diodes) to hear the precise difference between the two.
induction wrote:Isn't there already a 10K from both non-inverting inputs to Vref?
astrobass wrote:induction wrote:Isn't there already a 10K from both non-inverting inputs to Vref?
Yes there would be. He said 1M to ground. I've never done that before. It would be creating a voltage divider with the bias setting resistor, but with it being 100 times the size of the 10K bias resistor, you shouldn't see too much of a reduction in Vref. It should definitely be substantially larger than the bias resistor though.
But I haven't seen it before so I have no idea if that will help.
astrobass wrote:I have no idea. I was commenting to what the other poster said about a thing he remembered reading from some unnamed engineer at some point. It's highly possible that something's been glossed over.
Manfred wrote:One more question.
Is the intensity of the decay fizz depend on the setting of "Accent" or "Drive", respectively.
ipm wrote:Hi Mr Amplifiednation,
What seems to cause fizzy decay? What is wrong in ivlark's layout?
Thanx.
brownwhopping wrote:How can I learn by reading threads an making circuits, when some day I can see a lawsuit or somebody beat me in the face for that?
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