Audio Asylum Thread Printer
Get a view of an entire thread on one page
|For Sale Ads|
In Reply to: RE: 300hz is too high posted by KanedaK on February 05, 2017 at 18:09:02
You didn't mention the value of the PIO caps you ordered. If you use the .033uF (that's 33 nano) as I recommended, the input to your amp will be down 1/4db @ 400hz, 1/2db @ 300, 3db @ 100, 9db @ 50, 15db @ 25hz, so that is a decent reduction of low freq energy without significantly impacting existing filter slopes, although the response of the speakers will be affected somewhat in that their lowest frequencies will be reduced as well. This will probably have a greater impact on perceived clarity than reducing input to the amp. All small speakers distort when tasked with reproducing low frequencies, whereas most decent amplifiers do not.
Depending on what it is now, you might need to tweak the response of the bass xover/amp by raising the xover point (not terribly difficult), adjusting the slope (pretty complicated), or merely increasing the volume a bit (easy!) to compensate for the increased roll off of low freq's from the mids.
I doubt that Russian PIO is the best because there is no such thing (I assume that's why you used quotes), although they may be the best value. Improving on the sound of Arcotronics caps is no tall order, so you should be pleased. If you care to eventually invest more, I guarantee you would be even more pleased with copper foil.
berate is 8 and benign is 9
When my speakers were fully passive, they relied more on natural roloff of the various horns to create the slopes, than on the first order crossovers - mainly there to stop the robust Atlas midrange driver from frying. So I don't think whatever happens lower than 400Hz is making really much difference ( wére not talking extreme slopes here).
The reason I went active on the low pass is because I changed bass horns, and the new ones don't roll off so quick above 400Hz - I had to have a steeper slope than 6dB/oct because it sounded like crap.
But my 8 watts amp is now driving the high pass only and there's 50watts on the bass horns, and I like the added power for sure!
Post a Followup:
Post a Message!
This post is made possible by the generous support of people like you and our sponsors: