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JL Audio Ahead of the Curve

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  #21  
Old 05-23-2019, 08:39 AM
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crwilli crwilli is online now
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I am a firm believer, from first hand experience, in measuring your room and knowing what you are dealing with.

If you have flat bass down to the lower limits of your main speakers, you can run a sub without a crossover and just blend it in at the lowest octaves to fill things in. That is what I did with my Fathom in my old room.

If however, you do not have flat bass down to the limits of your mains as is the case with my system in my new room, you are likely to be able to achieve great bass by strategically locating a sub and using a crossover.

In either case, you could use a JL Audio Fathom or likely, an REL. I suspect any high end sub will have its own low pass filter and / or accept a control signal from a crossover. I love how my Fathom can be used and fine tuned in many different situations.

Measure your room and then let us know what kind of low end you have. From there, you will get more factual based input.
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Main room - Sonus Faber Stradivari, JL Audio F113v2 & CR-1 Crossover, McIntosh MC2301 Amplifiers with Stillpoint Ultra SS feet, McIntosh C1100 on Stillpoint Minis, Esoteric K-03X on Stillpoint Minis, Cybershaft Ultimate 2 OP17 on Stillpoint Minis, SilenZio v.2 Audio by -E- Media Server (running ROON), GigaFoil v4, Keces P3 with Ghent PC, 9 M Supra Cat 8+ and 0.65 M Revelation audio ethernet cables.

Other - 5 Stillpoint Apertures, GIK Bass Traps, Vicoustics Waveguide panels, Shunyata Alpha Clock 75 1.5 meter BNC, Shunyata Alpha 1.5 meter USB, WW Gold Eclipse 7 SCs, WW Silver Electra 7 PCs, WW Silver Eclipse ICs; 3 X 20 Amp Power lines, PS Audio P10 & Dectet, 3 Sound Anchor stands, Powerports and numerous Noise Harvesters. Furutech Flex 50, Cable risers, HRS dampeners

TV Room Audio - Panasonic TC-P60GT50, McIntosh MX-121, MC7106, Revel F52 & C32, B&W LM1, Sonos Connect\W4S Remedy\iFI 9V Power, WW & Kimber cables, PS Audio Dectet
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  #22  
Old 05-29-2019, 12:50 PM
Wayne Wayne is offline
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To reiterate, I believe that in order to get a smooth response you need to use a crossover. the odds of getting a smooth response without a crossover and measurements are very low. Even if you use REW or another measurement tool to get a smooth response without a crossover, it's very likely that at some frequencies the sub and your main speakers are cancelling each other thus putting higher demands on your speakers and amps and increasing distortion.
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  #23  
Old 05-30-2019, 08:56 AM
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Quote:
Originally Posted by Wayne View Post
To reiterate, I believe that in order to get a smooth response you need to use a crossover. the odds of getting a smooth response without a crossover and measurements are very low. Even if you use REW or another measurement tool to get a smooth response without a crossover, it's very likely that at some frequencies the sub and your main speakers are cancelling each other thus putting higher demands on your speakers and amps and increasing distortion.


I agree. I only use REW to show me the rooms issues, model my room to show possible placement locations and chart results. I do not play around with any of its EQ capabilities.

I believe most rooms have some issues with bass that a good crossover and sub will help alleviate through placement of the mains, the listening position and sub followed by educated setup of the crossover points, volumes and time/phase alignment.
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Main room - Sonus Faber Stradivari, JL Audio F113v2 & CR-1 Crossover, McIntosh MC2301 Amplifiers with Stillpoint Ultra SS feet, McIntosh C1100 on Stillpoint Minis, Esoteric K-03X on Stillpoint Minis, Cybershaft Ultimate 2 OP17 on Stillpoint Minis, SilenZio v.2 Audio by -E- Media Server (running ROON), GigaFoil v4, Keces P3 with Ghent PC, 9 M Supra Cat 8+ and 0.65 M Revelation audio ethernet cables.

Other - 5 Stillpoint Apertures, GIK Bass Traps, Vicoustics Waveguide panels, Shunyata Alpha Clock 75 1.5 meter BNC, Shunyata Alpha 1.5 meter USB, WW Gold Eclipse 7 SCs, WW Silver Electra 7 PCs, WW Silver Eclipse ICs; 3 X 20 Amp Power lines, PS Audio P10 & Dectet, 3 Sound Anchor stands, Powerports and numerous Noise Harvesters. Furutech Flex 50, Cable risers, HRS dampeners

TV Room Audio - Panasonic TC-P60GT50, McIntosh MX-121, MC7106, Revel F52 & C32, B&W LM1, Sonos Connect\W4S Remedy\iFI 9V Power, WW & Kimber cables, PS Audio Dectet

Last edited by crwilli; 05-30-2019 at 03:29 PM.
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