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In Reply to: RE: something between the main amp and the main speakers posted by Tre' on April 15, 2017 at 19:30:05
Ok, so two options, a capacitor between amp and speakers (to augment the existing crossovers?) or a more active approach between the preamp and the amp as shown in Kingshead's post below.
Like you Tre', I would prefer not having anything in the path with the mid/high frequencies. I am however interested in the approach of placing a capacitor between the main amp and speaker that will only affect the low frequencies in my bi-wired set-up. Are you are talking about a capacitor placed between the pos and neg terminals (sort of like a zobel network without the resistor), or in-line capacitors? Additional LR5 measurement information and specifications are provided in the linked review.
The manufacturer's specs indicate the frequency response of my LR5s is 40Hz-22kHz, +/-2dB and, from the measurement graph below, it appears the low frequencies begin to drop off at about 60Hz. Even with this limited frequency response, the speakers are relatively inefficient at 86dB/2.83V/m, probably due in-part to the sealed box design.
Could you direct me to where I could find more specific guidelines to the placement and appropriate value of the capacitor you recommend?
The thing is, that ECU was designed by the manufacturer to work with the Modulus setup, but I'm sure the Modulus sub and its partnering control unit would work great with just about any speaker.
I have other subs though, and although nowhere in the same league (at 8% of the cost of the modulus sub) the setup I've settled on works very well. It's only in direct comparison to the Infinity that you realize they are what they are.
Pictured are a pair of inexpensive Dayton sub1200's being used as speaker stands. Setting them up this way in stereo their sum is greater than the parts would imply. Instead of sounding like a great pair of speakers with a killer sub, the presentation is more akin to Heresys on steroids, THEY JUST SOUND BIGGER.
Does this imply the Modulus system would be improved with a second sub? All I can say is Heeeeeeelllllllll yaaaaaaaaaaaa.
A cap between the main amp and the main speakers will not help the main amp and a cap that big won't sound good.
A cap between the preamp and the main amp would be a small, high quality film cap and it would help both the amp and the speaker.
Sorry for creating confusion.
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