Connecting Sub to my preamp


Hello and Happy New Year!

Thank you for the many suggestions and advice regarding my Bookshelf speaker quest. I am currently evaluating two sets of speakers:

Kef 101 Reference Book Shelf
LSA Signature 50

I have found both to be pleasing in similar and also different ways. I have another system at home with Kef 104.2, McCormack DNA 0.5 and Manley Jumbo Shrimp pre. I find the Kef 101 to have a similar warm sound as my 104.2 setup and want to see if adding a sub to both the 101 and LSA 50 setup will make a defining difference for me. 

Question: Can and how should I best implement a sub into this system:
McCormack DNA 0.5 Amp
McCormack ALD 1 Preamp
The ALD 1 connections are pictured below.
 

I have three different Subs I can try:
Klipsch KSW10 - has speaker terminals
JBL CSS11 - no speaker terminals
Vintage MK V-1B - allows both speaker terminal or pre-in connection

Thank you for any advice and or suggestions.

Ray

128x128raydecraene

I use the same method as @knotscott with my McCormack dna1 deluxe. My subwoofer has “speaker” and rca connections.I tried it running out of my preamp into the rca and it introduced a lot of noise and surely didn’t sound the same as going from the dna1 to my sub with speaker wire.

when going the rca route make sure your cables are suitable. Filtering out noise was one my cables problems.

 

db