During the unprecedented impact of COVID-19 we have reduced both staff and hours of operation. Because of this, all calls may not be answered. For all technical support related inquires we encourage you to email service@martinlogan.com and sales@martinlogan.com for sales inquiries. Please expect a slightly longer response time than usual. Thank you for your understanding during this time.

Setup and Configuration of Subwoofers

« Back to Support Home

Should I use the XLR or RCA (or speaker level) inputs when connecting my subwoofer?

Created: Jul 16 2018 | Updated: Aug 24 2018

Some subwoofers have the option of RCA (unbalanced) and XLR (balanced) for a connection method.  Generally, RCA is fine for the typical 3 to 6-foot connection. For longer connections, or for those in interference-prone environments, XLR is the better choice. (Note that running a low-voltage connection alongside an AC power line is not a good idea to begin with.)

Some subwoofer's offer the option of using Speaker Level inputs. These inputs are useful in certain applications such as when the subwoofer is being used to extend the frequency response of specific speakers, but we advise using the RCA or XLR inputs whenever possible.

Uncompromising performance. Unflinching accuracy. Unwavering reliability. Harnessing the myriad technical advantages of electrostatic principles to recreate sound in its truest form—this is what MartinLogan is all about.