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Tuesday 1 May 2018 at 01:26
I have an email into Pinnovations for help too.
I have had their Sam Stern kit installed on Metallica for quite some time. It's plugged into a Polk sub and works very well.
Getting ready for Iron Maiden, I decided to hook up the mixer. Installed it as recommended and no bass.
As per instructions, ...
Source: http://pinside.com/pinball/forum/topic/pinnovations-passive-subwoofer-mixer-question#post-4371429