want to hook up 2 spkrs for each left and right.

Yogiboy is correct.

It should be mentioned for the record, though, that series connection will not generally give good sonic results if the speakers are not identical or very similar models. The reason being that the frequency response of each speaker in a series configuration will be affected by the impedance vs. frequency characteristics of the other speaker.

Also, regardless of which connection arrangement is used, if the two speakers in each channel are at significantly different distances from the listening position, comb filtering effects will occur, which are likely to have adverse sonic effects. That may not be important for your HT purposes, though.

Regards,
-- Al

A P.S. to my previous post. A solid state amplifier will only be able to deliver half as much power into 16 ohms as into 8 ohms. So depending on the power rating of your amplifier, to avoid the possibility of clipping the amp when using a series connection you may need to be a bit more careful with how high you turn up the volume control, compared to a single speaker situation.

Regards,
-- Al

Both speakers are identical and mounted one above the other. I am using a Sherbourn Receiver.

Yogiboy is correct.If you run parallel you take the chance of damage to your amp if it can't handle that lower load.

If thats the case then run them in series and the volume will be the same on all. No worry about damage of amp. Just remember that the power will be less so try it and see if it is sufficient.