Welborne Labs

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Original Message

High-pass filter Laurel

Posted by John S on January 5, 2001 at 04:00:41:
What is the best way to roll of the low frequencies from a Laurel IIx amp? A RC-filter at the input or just decreasing the value of one or both the coupling caps in the amp (see postings below about the effects of the value of the coupling cap on bass response).
I want to build a SS subwoofer for frequencies below 50 Hz to support DIY horns. Maybe the Laurel have more power in reserve when the lowest frequencies (say below 50) are filtered out. Which value is appropiate? I prefer not to use an active cross-over for this purpose of use the filter on the subwoofer amplifier.
Thanks.