reggae siren and echo and reverb

not meaning it as a dis but it sounds the same as every other siren copy, wether as the original njd, jts se10, red eyes, mine etc... i`m not sure though wether you`ve built it with some differences or wether you`ve made a mistake in the circuitry because it sounds like you got some rather wayward tones going from about the middle part of the sample (which are not as the njd), i`ve had the same thing when building sirens, but for me it was always because of some component mistake... i tried building one for a friend when i was in israel a few months back but sourcing the right components there was a little difficult, i could`nt get it working, then after i got back i tinkered with it and got a number of tones working and some not, a couple were a little off, but actually it was quite interesting so i have`nt tinkered any more, sometimes the mistakes gives you something different and probably, like yours, its worth keeping it as it is...

people keep telling me that jts`s se10 is different from the njd, but it is exactly the same circuit, albeit with an additional chip for 3 xtra sounds, but the rest of the siren has the exact same cycle of tones as the njd, it can sound different at times but its only in pitch (which also affects the rate of the sounds), and this is usually due to the differences in component tolerances, this can also be from batch to batch, tubbs has noticed this himself with some batches being slightly higher in pitch than others, but very little can be done to resolve that.