I started collecting bird chirp CDs since few years back. Until recently I took over a failed/gave up mini farm of 18'x45' to renovate. Spent 3 months+ DIY then re-open on 21/7/2007. I treat this as a hobby only. Swiftlet farming is interesting and addictive. Always think of ideas to improve. Sometimes in dreams also about swiftlet farming

Read lots of farming books. Bed time reading also farming books... Get as much info online join all the swiftlet forums I can find. Teh tarik discussions, exchange ideas, experiences and sound with kt newbie farmers like me. Also I like to do farm watching. Go up tall buildings to observe other people's farms.
Higher buildings definitely have advantage. But don't be supprise there are double storey old shop house doing better than 4-5 storeys building. There're a few tall farms near the temple. Longer operating history than the 2 storey but the 2 storey is really heavy duty. Monthly 20-30kg but the size is quite big 3 shoplots but only upstair for farming.
Those out of town farms are mostly stand-alone farms. They choose out of town for low profile. Cheaper land, build without permit also small chance bandaran can find out. More and more farms like these in Setiu district and Kuala Berang. These area not many farms some even pioneer farm. Birds that come visit don't have much choice to choose from so stay permanantly chance higher.
My 8 directional tweeter is already up there since 21/7. Want to see can go to water front jetty behind Seri Malaysia sit there can see a DK with the 8 directional tweeter on top.

This morning I just went there big crowd of birds playing around the tweeters. Most of my tweeters are 95cents piezo tweeters. Some connect with condenser capacitors. Sound better but volume become lower. For internal I also use carbon magnetic tweeters sound more natural but volume also lower than piezo.
The old double storey shop house do better because last time there is no other suitable house ma, so there just stay only lah. Some more last time ppl don't know the technique of bird calling and this old double storey shop house is well known among the bird. So a lot of ppl said it depend on luck if you invest in this business last time. But now there is bird calling cd in the market so it easy to call a bird to your hotel. ppl said if there is a nest the population will start to increase is that correct? Although there is no sound the bird sometime still playing at the entrance is this showing a positive sign or negative sign? One day i will go to seri malaysia jetty to see your farm, if you want to see my farm you must see from pasar jetty the jetty entrance next to redang holiday office. If you use the redang holiday office entrance your must look left to see my farm. There is a small pondok make from abestos on top of the roof that is my farm.