Stereo sub out to mono, is it safe?


My new integrated amp has L/R sub output and my sub only has a mono input. Is it safe to use a Y adapter to sum the L/R output to the mono input or will this cause a short? Thanks for your insight.
128x128geared4me
Phasecorrect, thanks for the follow-up.

To be sure that my first post above is clear to everyone, I will summarize it without the techno-stuff:

1)There is a reasonably good chance that the y-adapter approach will work well.

2)Depending on the specific design, there is a possibility that the y-adapter approach will result in mono being heard through the main speakers.

3)Depending on the specific design, there is a possibility that the y-adapter approach will result in a perceivable increase in distortion (or other perceivable sonic degradation) on deep bass notes produced by instruments that are positioned off to one side.

4)Depending on the specific design, there is a VERY SLIGHT possibility that the y-adapter approach could over the long term result in damage.

5)Using a properly chosen mixer instead of a y-adapter would eliminate all of these adverse possibilities.

6)Hopefully the manufacturer will provide further information that will narrow down these possibilities.

Regards,
-- Al
Al...no worries...this is audio and there are more ways to skin a cat...and I believe we all have good intentions...I just try to inform others of thje pitfalls I have encountered...this situation isn't one of those...99 percent of the time it will work...happy listening....
Don't you need a 'summing' adapter for this application?

I don't think this is the same as 'splitting' a single output which a vanilla flavored "Y" adapter would do.

But 'summing' two signals into one would take a different "Y" configuration.

The quickest example I could find was the one on Antimodes website:
http://www.dspeaker.com/en/support/using-stereo-pre-out-with-8033.shtml
Thank you Al. Appreciate your comment. Phasecorrect, I respectfully suggest you read my threads on the subject. Tom Tutay's buffer solved several problems: (1) asymetrical loading (i.e., output to amp was XLR; output to Paradigm control box or the sub was SE); (2) combined output impedance presented to my linestage was lower than factory recommended, the buffer increased impedance; and (3) the device summed L/R channels without shorting the linestage.