x-over resistor replacement query


I am trying to replace a pair of 10W11RJ resistors, but can't find 11 Ohm units in the MOX Wirewound 10 watt Superes Resistors range I am looking at purchasing.
Would it be better to go up or down the Ohm value when replacing non-inductive resistors in x-overs, ie order 10 or 12 Ohm values? Alternatively do I connect a 10 & 1 Ohm resistor in parallel or series to get 11 Ohms?
Will these changes make any discernible difference if any?

Awaiting your feedback.

cheers

Tiv
freschie
No resistor is best (agree with Rfogel), Duelund is a superior product to use if a resistor is mandatory.
Regards,
Mills 12 watt wirewound resistors are an inexpensive alternative and are very high quality sonically. In some places, I prefer them to Duelunds in my speaker crossovers. The Mills are also available in a wide range of 1% values.
I have duelund resistors and have had mills etc in xovers, but one of my favourites is the Caddock MP metal film. The Caddocks sound lifeless and dull for 5-10 hours of burn in then become extremely transparent, low distortion, low noise,nice texture. No brainer. They cost peanuts too. About half the price of Duelund resistors.

But obviously your choice is circuit and taste dependant.
I've used both Mills and Caddocks and agree, either would be a good alternative to the more expensive Dueland.