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In Reply to: RE: How 'bout just the sub bass? posted by Mr_Steady on July 08, 2015 at 19:48:24
Thanks for you input.
Paul made some good points as well but the point that I'm not sure everyone is getting is this,
All other frequencies are riding along with the lowest frequency at that moment.
If the load line has turned to an ellipse (or worse, a beach ball) because of a lack of inductance then all the frequencies are traversing that bad load line.
Removing just a little of the low bass (and using a more suitable amp and speaker for that low bass) can make a big improvement in the load line for the rest of the music.
My JBL 2118 midrange speakers only play down to 200Hz so that's where I cut the bass to the SET and use a SS amp into a pair of 15" JBL 2231's for the bass.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
Follow Ups:
If the load line has turned to an ellipse (or worse, a beach ball) because of a lack of inductance then all the frequencies are traversing that bad load line.
I'm not convinced this is as bad as everyone says it is. A while back I looked (in spice) at some small signal 1Khz and 10Khz sine waves added to a large signal 20hz sine. I then used a steep filter to cut out everything below the 1Khz (or 10Khz) and looked at the distortion as I varied the amplitude of the 20Hz signal. Sure I saw a difference with the larger amplitude 20Hz causing slightly more distortion at higher frequencies but unless I was current clipping, I didn't find the results ground breaking enough to interest me.
dave
> "but unless I was current clipping, I didn't find the results ground breaking enough to interest me."
Was there anything remarkable when it did clip? It's hard not to clip with a 2A3 amp.
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Big speakers and little amps blew my mind!
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