Sierra 1 - Horizontal Orientation

[jakeroux]

Background: I am considering upgrading my speakers in what is covertly being transformed from a kid's playroom to a man cave. The TV, components and speakers are housed in a built-in book case, with speaker shelf height limited to 11" in the ideal configuration, with a depth of approximately 22", and width not being an issue.

Plan: I would *like* to be able to go with the Sierra 1's for the Mains and Center, but the bookshelf location would require that the Left and Rights be horizontally oriented. I do see in the product description that they can be horizontally oriented, however, before moving that direction, I have a couple of questions.

Questions:
1. Assuming I purchase Sierra 1 Mains and rotate the tweeters 90 degrees, would their horizontal orientation result in any on or off-axis performance issues? There would be approximately 6' of separation between the Left and Right speakers, and they would be approximately 8' from the primary listening position.
2. How much would the bookshelf enclosure of 11" H x 22" D degrade the performance of the rear-ported Sierra 1?
2. Is the tweeter rotation something that can easily be done at home or do I need to request this modification when ordering?
3. I assume that the Sierra 1 Centers are identical to the Sierra 1 Mains other than the orientation of the tweeter and the location and orientation of the logo on the grilles, correct? If so, I assume there would be no reason I couldn't just go with three Centers across the front rather than a Center and Mains, thereby having the tweeter and grille logos oriented correctly out of the box?

Thanks in advance for the assistance.

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