I'm looking to customize the PA-300 that I have a little bit. I have the product manual with the circuit diagram and while my knowledge of electronics isn't the best I'm pretty handy with a soldering iron. I'd like a one-of-a-kind siren for my collection and to turn a lowly PA-300 into something really unique. I'm looking for some help as to how to modify specific components of each oscillator to produce the following:
1) Slower, deeper wail that has that "old-school" sound and a slower wind up/wind down. Looking for something similar to a PA-20 or any of the older sirens, really. WS-222, 224 and 295s all have a sound that like like, ditto for any of the North American Signal Siren Masters or the older SVP SA-400s. I'd like to modify it to become what Wailer would call a musical instrument .
2) Slower and deeper yelp. Again looking for an old-school sound. Would also be interested in a tone that's similar to a Powercall Warble.
3) Faster Hi-Lo or something a bit similar to the Priority tone on some PA-300s. I'd be looking for something like a Hyper-Low on a Mastercom.
4) As for the Airhorn, I'm still on the fence. I could go for either a deeper one or one that's a bit like the above-mentioned sirens.
I've stumbled upon an old cache of electronic components. Resistors, transistors, etc. This will hopefully be pretty helpful.
As for modifying the oscillators to change the tone, is it as simple as changing the resistance on a resistor, or is it more complicated than that? I'm also rather concerned about frying the siren or doing some sort of damage to it.
Definitely looking for some help on this one as well as some general info for modifying sirens, such how changing a component in a certain way will affect a tone.
1) Slower, deeper wail that has that "old-school" sound and a slower wind up/wind down. Looking for something similar to a PA-20 or any of the older sirens, really. WS-222, 224 and 295s all have a sound that like like, ditto for any of the North American Signal Siren Masters or the older SVP SA-400s. I'd like to modify it to become what Wailer would call a musical instrument .
2) Slower and deeper yelp. Again looking for an old-school sound. Would also be interested in a tone that's similar to a Powercall Warble.
3) Faster Hi-Lo or something a bit similar to the Priority tone on some PA-300s. I'd be looking for something like a Hyper-Low on a Mastercom.
4) As for the Airhorn, I'm still on the fence. I could go for either a deeper one or one that's a bit like the above-mentioned sirens.
I've stumbled upon an old cache of electronic components. Resistors, transistors, etc. This will hopefully be pretty helpful.
As for modifying the oscillators to change the tone, is it as simple as changing the resistance on a resistor, or is it more complicated than that? I'm also rather concerned about frying the siren or doing some sort of damage to it.
Definitely looking for some help on this one as well as some general info for modifying sirens, such how changing a component in a certain way will affect a tone.