ahchard,
Items for my DIY kit
1)Any box to fit all in a nice portable package (some folks use document case u get from stationary shop)
2)12V Amplifier (I had to buy cos' my car stereo still run on cassette tapes) (RM120)
3)tweeters - (RM3-4 each)
4)speaker wire (RM6/metre)
5)power cable (dun use the speaker wire!!!!, though speaker wires are supposed to have less resistance, the ones you get frm J Pasar sort of just heat up, so I use the cheapo ones frm electrical shop (very cheap, a few RM per roll , enuff to fly kite with)).
Just remember if you are putting yr amplifier in the box, they get hot after half hr, so keep it slightly open to ventilate.
6)thumb drive for bird call

Good luck

ahwee1987,
What I did was to ask the sales chap exactly how I was to wire the speakers to the amplifier.
I made him test each and every tweeter for me though they cost less than RM3 each.
(I am no expert by any measure.) Bought all the material, yes for less than RM150.
Fitted and tested fine all wired up (without soldering).
Found the box, cut out to fit the tweeters, solder the wires to the tweeters permanently.
Screw everything firmly into the box so nothing moves during transportation.
No I do not use the battery off the car, I carry a separate 12V battery in the car for the purpose.
I notice the amplifier gets hot with use, so the draw must be BIG.
I wouldnt want to be stranded in far off places with a flat car battery.
It may be safe to do the testing with the car running but I chose not to.

As for the testing, I would suggest you bring along a GPS so that you can mark out where you were.
For a better sense of the place , you manually or download thru serial cable to Google Earth.
Then you will be able to see the topo, existence of of big water, vegetation and so forth from satellite photos.
If you had also the waypoint (GPS speak) of the nearby successful BHs then you will be able to gauge whcih way the birds fly.

How come 12' x 12' ? Accordding to your building width  it should be 12' x 22' right ? If I were u, I'll make it 15'x22'. Rule # 1, let the birds feels at home.

Both entrance holes are very BIG !!

If nearby BHs all using DK then follow them lor... but open roof is definitely license compliance in the future.

Based on your draft plan, I think your BH will be very very bright.

What is the direction and sunrise and sunset ?
The nesting room entrance hole can be 2'x4' first then slowly seal up accordingly to situations.
For 12'x22' roving area, my opinion is that it is not suitable for a center hole to the nesting room. Anyway, you can always open 3 holes first left, centre and right then seal up the less frequently used one.

sunrise on east and sunset on west...the left side of my drawing will face the west..
Then no worry of direct sun light shining down the the ground floor. But your side wall will be very hot in the late evening. Better use insulation materials or light weight bricks on this side of the wall.


so the open roof i should open 3 hole first?how big the hole should be? 4x4ft??is it ok? for 3 hole? left ,center, and right??
No, not the open roof, I'm referring to nesting room opening.

so the open roof size to the roving area the hole is ok right??or i need to reduce the size?
To me, I will reduce. Reducing the size can cut down the volume of rain water, brightness, air turbulence in the nesting room, lower humidity, etc etc

then i should have 3 holes of 2x4ft at the nesting room there right??
Well, no harm having more holes right ? 

My open roof is 6'x9' purposely shaped in rectangle to avoid sun lights. You need to consider this point before deciding the final size and shape.
I would count the distance of the opening from the ceiling rather than from the floor because BHs don't have standard height for instant Cergau's BH is 15' high. I would take 40cm from the nesting room ceiling to the top edge of the hole as a idea distance.

As I see it:

Let me tell you why just one entrance, just like wife, the more, the more difficult to manage,,,hahahaha

1. 2 holes, sini masuk, sana keluar and air turbulence and other disturbances are bad for new BH as there is not safety feeling. If you make more than one hole in case you fail with the one hole you make, sealed off on ehole first and if that hole is not suitable due to reason like light, wind or conditions, then close it up and open the other one.

2. Case history, I have been to a failed BH with 3 openings and the only nests found were in the utmost  interior of the BH after the 3 holes meaning that the 3 holes are just for the birds to play in and out and do not serve the purpose for the bird to breed which what we are aiming for. So, I told him to use only the best one and close up the rest. Now, all the rest of the building is used by the birds to nest.

Sometime, because we are not contractor so we make more than we required as back up like back up entrance openings in case of failure without having to endure more financial payment and time plus nowaday, it's impossible to get workers to do little job.  My little believe in the art and science of BH's building.

u r welcome.
1)I take it that u didnt test right next to an existing BH?
2)200 birds is indeed impressive ... over a period of less than an hr?
3)Did the birds circle or just flew past you? They shd circle.
Even if they were not reacting to yr sound you hv found a good spot
If you have got the pooling sound, they shd be chasing each other.
If you have the piyit sound (sounds like a chick being tortured!!) , they shd come very close to the speakers but not chasing each other.
Oh! dun ask me for my sound as I paid good money and also not fair to the seller also-lah!

In essence the magic is in the sound.
After you are satisfied that you have a good test sound and h/w, u shd go test at yr grandad's place.
See if you get similar results.
If not you can always find the land owner at Batu Berendam and promise to marry his spinster daughter for the use of the land.
(not advisable if he's a blood relative and also forbidden by law)

Sifus pls jump if u feel otherwise on my 2 bit (except for the last bit-lah).

ahwee1987,
That's alot of birds. u sure that wasnt next to a BH?
Thought I saw a roof at some point.
Anyway I have never seen that many in all my testing, but then I dont test at areas I cannot afford anyway.
Like some sifus oredy lamented, these choice coastal land has gone up 300% in price attributed to BHs demand.
Dont ever say it's for BH when looking for land.
Good luck at yr grandad's place and hope u turn the sky into black mass when u turn on the chirp.

There must be very successful BH(s) around for that nos to be around.
To find the owners?
Various ways depending..you have to play detective a little
1)There shd be a sign board on site with info on developer, engineer, etc....you trace frm these info      ELSE
2)Get the rough location and a lot of your verbal description to a real estate agent and ask for a title search...charges varies RM50-RM150 depending on travelling cost. I think if u DIY u pay RM30 to the local land office, but how to get the LOT nos and so on? Real estate agents have stakes of plans to identify and narrow down the place.    ELSE
3)This is the fun way....
a)Get a GPS or the the ones that are packaged into yr hp also can
b)Mark the spot (waypoint in GPS speak) - required for step (d)
c)Start GoogleEarth,
d)Add Placemark
edit the lat and long with values frm step (b)
OK and close
see the placemark (a thumbtack) automaticaly go to the spot u made the waypoint
now eyeball the place on GoogleEarth and get a bearing of the place
Show to the real estate agent the location.

PS There is a way which I stumbled on accidentally in a certain govt department online where u can get to the lot nos.
I do not wish to disclose the way as I found out later its a source of info to a group of local enthusiast whose hobby is to locate all the surveyors markers in the country. I wouldnt wanna to be the cause of stoppage to their hobby if the govr dept closes that gap.
There markers are all over the place, mountain tops, in jungles, in towns, along roads, hiways, next to old buildings etc...a lot were laid down by the colonials. An interesting hobby for adventurous folks with a GPS. You get bragging rights with pics of the markers.

my swiflet house is 20feet X 60 feet. wat is the minimum size of my roving rum? PLz teach me

There is a Chinese saying: your money is in the bank, but you are in the Heaven. My friend, try your best to avoid having LAL between floors. There are far too many mishaps and accidents from this type of design which led to many permanently maimed or disabled with fatal cases caused to the owners and consultants for the past years. Almost every year, we hear such misfortunes. Most of them are filthy rich. Such type of design is a booby-trap to the owners. So, do be careful and to reconsider.

a low wall would interfere with the natural flying of the swiftlets.