Harman Kardon HK990 Question


I pulled this amp out of storage the other day and hooked it up.  For the 1st time since I bought it, it occurred to me there is no way to bypass the high and low pass filter section when utilizing the subwoofer outputs. When the sub outputs are turned on, the setup process forces you to select a crossover frequency, even if you want to manage your bass via other options.  If any of you guys are still using this amp, how do you address this issue?  I guess I could just hook the subwoofers up to the preamp outputs.  My subs don't have high level inputs. 

danoroo

Follow this guide to build a line out converter. The 2 resistors will cost like $2 if that. Or you can buy an LOC built. Quality doesn’t matter. I’ve done this for years, it works great. The parts are so small if you are careful it can be built into the bullet case at the end of the RCA you use to connect the sub.

https://www.epanorama.net/circuits/speaker_to_line.html