New Graph, dip at 200

3624 Views 12 Replies 6 Participants Last post by EarlK, Mar 16, 2014

Papcody

Discussion Starter · Mar 13, 2014

This is my latest FR after running audy and MiniDsp. LCR average with subs:

Anything I can do about the 3 dips, especially the one at 200? what would cause this?

I have 2" panels with a one inch air gap for first reflection points.

bass looks pretty good:

Not sure how to interpret the waterfall yet:

Purple Violet Wave Electric blue Pattern

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prerich

· #2 · Mar 13, 2014

What speakers are you using and what frequency are you using as a crossover point?

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prerich

· #7 · Mar 14, 2014

Papcody said:
M&K S-150's across the front and 2x 18" sealed Dayton subs. They are crossed at 80. The S-150's are THX spec'd speakers designed for 80 cross. Audyssey actually wanted to cross them at 70 if I remember correctly which made no sense to me.

very good speakers!!! How old are they? You may have a defective cap in the crossover.

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prerich

· #9 · Mar 14, 2014

Papcody said:
Thanks prerich. Yes, i like them and they are pretty old, from when they still made them in the USA. I would have no idea how to check for a bad cap but all 3 have the same FR when tested separately so I would think its something else causing the dip, or they all have a fault...

You're correct!!!! I'm just reaching at straws right now

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