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#1
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Loving my New CR-1
In my new room here in SC, I knew I had issues with the low end. Between my ears and measurements with REW, there were a number of problem areas. After many days of listening, moving speakers and measuring, I finally have decided to keep the Strads on the long wall of my 23’2”L x 16’W x 10’H room. They are 12’ apart and the listening position is 11’ away. They are 32” from the front wall and my LP is 35” from the back wall. The Fathom 113v2 is to my left 7’ from the front wall and 32” from the side wall.
I will spare you the evolution of measurements but suffice it to say, there was a peak at 50-60Hz and a null around 100 Hz. Both caused primarily by the Placement of the Strads. I decided to connect my new CR-1 with The Xovers set at 110 to reduce the impact of the Strad placement and was immediately rewarded with better bass. Adjusting the sub/Strads balance improved it further and then I plugged the Strads low end port, adjusted the HP crossover contour to what sounded better, adjusted the Phase on the Fathom per Barry Ober’s instructions and WOW!! Could it better? Sure, it still measures ‘bumpy’ but less so than without the CR-1 and it sounds bloody fantastic which is all that matters! The Strads are casting a very wide, open and detailed, Black sound stage and the low end is seamless, deep and sometimes, downright scary. The ease with which the CR-1 allowed me to do this was impressive. I am a believer.
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Main Equipment: Kharma Elegance dB11-S, JL Audio F113v2 X 2, Block Audio Line & Mono SE Amplification, Bricasti M21 DAC, Antipodes Kala K-50 Server, Clearaudio Performance SE. Satisfy tonearm & Maestro Wood MM cartridge. Power: Shunyata Everest 8000, Sigma XC v2, Sigma NR v2, Block Audio PCs, Defender, ADDPowr Wizard Grounding: Shunyata Altaira CGS - 4 X Alpha CGS cables, Network : Supra Cat 8+, Twin (Nenon) Modified Buffalo GS2016 Switches, Keces P3 LPSU, Cables: Wireworld Platinum 8 USB, Wireworld Platinum Eclipse 8 Speaker cables, 6M & 1M Tubulus Concentus ICs, Other:Two PSI Audio AVAA C20, Multiple GIK products, Stillpoint Apertures, Stillpoint Minis and Ultra SS, Three 20 Amp lines, Furutech GTX - Gold outlets, Adona Rack Last edited by crwilli; 01-06-2018 at 11:51 PM. |
#2
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It’s good to hear your new listening room is coming together. Time to just sit back and enjoy.
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#3
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patience is a virtue, all good Craig !
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#4
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I am using the CR-1 aswell along with Ober's setup and it worked very well for me. Integrating subs correctly can be a challenge but the cr-1 makes it much easier. I especially like the ability to independently turn mains and subs on and off which was helpful when setting phase/gain.
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#5
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Craig, the CR-1 is a serious tool for subwoofer integration. Enjoy!
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#6
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Craig, what are you using to measure the frequency response of your system/room?
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#7
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Quote:
I am using REW software with a UMIK USB mic and an HP Latitude laptop. Works like a charm!
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Main Equipment: Kharma Elegance dB11-S, JL Audio F113v2 X 2, Block Audio Line & Mono SE Amplification, Bricasti M21 DAC, Antipodes Kala K-50 Server, Clearaudio Performance SE. Satisfy tonearm & Maestro Wood MM cartridge. Power: Shunyata Everest 8000, Sigma XC v2, Sigma NR v2, Block Audio PCs, Defender, ADDPowr Wizard Grounding: Shunyata Altaira CGS - 4 X Alpha CGS cables, Network : Supra Cat 8+, Twin (Nenon) Modified Buffalo GS2016 Switches, Keces P3 LPSU, Cables: Wireworld Platinum 8 USB, Wireworld Platinum Eclipse 8 Speaker cables, 6M & 1M Tubulus Concentus ICs, Other:Two PSI Audio AVAA C20, Multiple GIK products, Stillpoint Apertures, Stillpoint Minis and Ultra SS, Three 20 Amp lines, Furutech GTX - Gold outlets, Adona Rack |
#8
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Congrats, Craig!! You made some very smart choices. And, I think Barry Ober’s system is ingenious. I also think that time domain resonance matters more than a table top flat frequency response. Did you happen to run a waterfall graph?
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#9
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Randy, I was looking at waterfalls but honestly, don’t fully know how to interpret them other than to know that the decay times should be as uniform as possible across the audible frequency range. Before I did this, the decay in the low end was very long. Now the waterfall looks much more uniform across the range. That is the extent of my knowledge (or not). All my final/fine tuning was by ear. I only used REW to highlight where the issues were and to simulate my room and see what speaker and LP locations changes would do. It is a very useful capability of REW. Craig
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Main Equipment: Kharma Elegance dB11-S, JL Audio F113v2 X 2, Block Audio Line & Mono SE Amplification, Bricasti M21 DAC, Antipodes Kala K-50 Server, Clearaudio Performance SE. Satisfy tonearm & Maestro Wood MM cartridge. Power: Shunyata Everest 8000, Sigma XC v2, Sigma NR v2, Block Audio PCs, Defender, ADDPowr Wizard Grounding: Shunyata Altaira CGS - 4 X Alpha CGS cables, Network : Supra Cat 8+, Twin (Nenon) Modified Buffalo GS2016 Switches, Keces P3 LPSU, Cables: Wireworld Platinum 8 USB, Wireworld Platinum Eclipse 8 Speaker cables, 6M & 1M Tubulus Concentus ICs, Other:Two PSI Audio AVAA C20, Multiple GIK products, Stillpoint Apertures, Stillpoint Minis and Ultra SS, Three 20 Amp lines, Furutech GTX - Gold outlets, Adona Rack |
#10
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You got it. A long decay time will result in bass that sounds one note or thudding. Long decay and louder frequency response tend to go hand in hand because they are each manifestations of a standing bass wave. If the decay times are relatively even, I find that heavy handed EQ of frequency responses sounds dead. You were smart to target only the two outliers. Finally, I am betting that the newly crisp bass is because you eliminated some impulse edge lag when you stuffed those ports. Bravo! |
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