From what I hear what others say about REL subs, you should not be too concerned about a muddied bass. Provided of course you configure it properly and take a few pro-active steps.
To help ensure the REL remains well defined for the lowest regions, you might consider auditioning some Audio Points from Star Sound to replace whatever footers already on the REL.
In addition, you might consider auditioning some Audience interconnects to use with the REL.
Audience has three ic lines and even their most inexpensive line carries their same technology to minimize/eliminate time-smear.
Amazing what bass sounds like without the time-smear effects so commonly found in most interconnect and speaker cables.
-IMO
To help ensure the REL remains well defined for the lowest regions, you might consider auditioning some Audio Points from Star Sound to replace whatever footers already on the REL.
In addition, you might consider auditioning some Audience interconnects to use with the REL.
Audience has three ic lines and even their most inexpensive line carries their same technology to minimize/eliminate time-smear.
Amazing what bass sounds like without the time-smear effects so commonly found in most interconnect and speaker cables.
-IMO