Afternoon all, I have a DTV oval dish with triple LNB. I feed 2 SD and 1 HD receivers. I also have an OTA diplexed on the signal to the HD Receiver. I've just ordered a new Sony XBR and would like to upgrade to a second HD receiver. I think I will now be in need of a 5 x 4 multi switch. If I read these forums correctly, I need to run 4 lines from the triple LNB and 1 line from the OTA to the multi switch. From the multi switch I'll need 1 line to each receiver and then diplex ( or split the signal, not sure of the proper term ) the signal at each receiver. Could my multi switch be unpowered or is a powered the best option?