>Although their stock Ada fans might be quiet if run at the lowest level, I'm thinking of replacing them with Papst fans.
Note that only the 2 front fans have speed control. The one in the rear of the case does not.
> whereas two front fans of Lian-li box seem to have two-pin connections
Actually, it has a 3 pin connectors for the 2 front fans. However, power is provided to the whole assembly (i.e. fan power connectors, resistors and the speed switch) via a 4 pin connector. So if you have fans with 4 pin connectors, you can still connect set them up in your case; you just forgo the speed control feature provided to you by the case. Of course there are many places where you can buy connector adapters that will allow you to hook your 4-pin fans to 3-pin connectors at the front of the case.
>what types of connectors are needed for front and rear case fans for Lian-li PC60USB
For front ? see above. The back fan plugs into the motherboard (if you have a fan power socket on your board) and I?m pretty sure one 3 to 4 pin connector is supplied with the case so you can plug the 3 pin rear case fan into a regular 4 pin Molex connector. I say I?m pretty sure, because I no longer remember which parts come with the case, which with the power supply and which with the motherboard. In any case ? connector adapters are easy to come by in most computer stores. And if you plan to replace stock fans with Papst fans tailed with 4 pin connectors ? this is not an issue any way.
>Also let me ask you if replacing Adda fans with Papst ones makes a noticeable difference.
Huge! But as I said in one of my previous posts, I got used to the lower noise level very fast and am looking into ways of making the case even quieter.
>It seems the place you order Papst fans from offers better price, but I don't like to tail fans
Well, it?s not hard. It requires no soldering and it can be done with ?professional? quality results with a tool that you can pick up for $10 at Radio Shack (I?m assuming you live in the US?) But it?s a personal choice
>As far as Enermax is concerned, you can replace its fans by yourself, but it looks a bit troublesome for me since I don't have an quipment for soldering.
Actually, I replaced stock fans in my Enermax power supply without any soldering. It turns out the fans are were not soldered in but rather plugged in using 2 pin connectors. I wasn?t able to find the right connectors (it?s a long story) but managed to pull it off with some heat-shrink tubing and regular 3-pin connectors.
Michael