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Cut lower frequency to help my bookshelf speakers

Dear All,

I try to open a new topic… which i did not find in the previous discussion so maybe is new to the most

 I have a 2 channels system which i want to improve with a minidsp or eq

the question in short is the following:

i love my dynaudio special 25 speakers but often i feel the need to have a better punch on the bass frequency

so i tried to add a couple of svs 1000 pro subs… with excellent results

point is that when i turn up the volume too much i feel the dynaudio midwoofer cone rattle when hit the lower frequency (actually the coil reaches the end of the air gap into the magnet)

so im thinking to add a dsp or eq to cut the lower frequencies before they reach the dynaudio

i have a pre audio research LS2 + amp mark levinson 23.5….. the idea is to add the dsp or eq in the middle and have the following configuration:


  1. connect the minidsp or eq. to the first rca out of the audio research (fortunately i have 2 rca and 2 din outputs) and then to the mark levinson …. in this way i could to cut all the bass frequency under 50 or 60 hz and have the levinson handle  the dynaudio 


  1. connect the 2 subs to the second rca out of the audio research and use the svs internal dsp with iphone app to calibrate them


Hope is clear… What do you think?


Better a miniDSP 2X4 or a Schiit loki mino+


Or anything else?



tks alot for any help or useful hint, best


Andrea


aurgolo
yogiboy's avatar
yogiboy
5,764 posts
 
This is from the SVS SB-1000 owners manual. Using the high pass filter should give you the best results!

Line Level Inputs These inputs are used for line level connections to the subwoofer. For a single mono connection to an A/V receiver, use the R/LFE input. For 2-channel applications, use both the L and R inputs. Line Level Outputs These outputs are used in 2-channel applications to high pass the signal being sent to the loudspeaker amplifier. The line level outputs feature a fixed 80 Hz 12 dB/octave high pass filter.
millercarbon's avatar
millercarbon
12,531 posts
 
@arcticdeth... yes also i could sell the dynaudio and buy a floorstand.... but before i want to try to get the best out of the special 25

You can lead a horse to water, but you cannot make him think. 

Reminds me of a friend with a Ford Pinto. Why won't the Pinto do 125? He was sure the car would be just fine doing 125. So he goes flat out down the Gorge. Columbia River Gorge. Big downhill grade. Miles long steep hill. Flat out. Almost gets there, too. 120 I think he said. According to the speedometer. Week later, according to the head gaskets he needs a new Ford Pinto.   

Keep it up buddy, keep trying to wring blood out of a turnip. What you will get instead, first scraping, then smoke, then finally the only thing you might just maybe understand, a totally blown little speaker. Perfectly good speaker, ruined by rank mulish stubborn refusal to learn.   

Only thing I am trying to understand, why come here if all you are going to do is refuse to listen to all the good advice? Why not just plug the speaker straight into the wall, put it out of its misery? Where you are headed anyway.
russ69's avatar
russ69
3,536 posts
 
As MC kindly pointed out the OP has his back against the wall and is still trying to push the wall harder. In audio, when you get to this point you have to make BIG changes. Big loudspeakers and big amps, there is no way to fine tune a system that just isn't designed to do what the OP wants to do. 
fiesta75
1,378 posts
 
OP is you, original poster. Somehow reduce the bass below 80Hz. or a little higher to your Dyna's using some type of high pass filter. You're trying to reduce how much your 8" woofers need to move.
audiorusty
287 posts
 
Aurgolo, you place the minidsp between the pre and the amps because that is how the minidsp is designed to work. I think that you will get more sound degradation using the Node2 not to mention possibly greater phasing and timing errors, but give it a try and see what happens. You may like the results.

Also, if yogi boy is correct and the SB1000 has high pass filter capabilities that would be the easiest way to go. Connect your pre to the SB1000 and then connect the SB1000 line outs to the Mark Levinsen. The possible down side to this is that an 80 Hz, 12 db/octave crossover point may not be high enough or a steep enough drop off slope to alleviate your over excursion problem.
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