1. Locating 2 APs on distance 30 feet from each other oesn't make sense. Any client works at any time with just one AP, so additional AP nearby will not improve a speed in any way, but may create interference if channels are not properly configured.
2. As Phil mentioned, you must use WPA2, not WPA -- using WPA makes any AP limited to 802.11g speeds - it's 54MB/s max. WPA is also unsecure.
3. Wi-Fi adapters of your clients may be limiting speed. To know what speed you may expect you must know what kind of adapter your client device has -- whihc band is used, is it 802.11g (54 MB/s max), 802.11n with 1x1 or 2x2 MIMO (150 and 300MB/s), and if 20MHz or 40MHz channels are used (40 MHz channels double 802.11n capacity to 300 and 600MB/s).
4. Taking into account Wi-Fi principles, real throughput is always lower than connection rate, even if you are the only users of WiFi in this neighbourhood (which probably isn't a case). If there are other networks on same channel, you are sharing throughput with them.
5. If you really want get help, provide detailed info about your system and configuration, or, better get somebody knowing Wi-Fi look on your system.
For me 2 and 3 reason seems most realistic in your case, but without more details nobody can help you...
Ruckus APs are great, so if you have low speeds, you have bad client, bad conditions, or wrong configuration. Probably, all 3 in the same time...
Hope it helps,
Regards
