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Old 04-24-2016, 11:34 AM   #21
Jeff Leun Jeff Leun is offline
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I use a miniDSP, found it to be quite useful to smoothing out a hump at 40hz and dip at 70hz. Night and day , Im a semi tech tard on some level, that said anyone can use it if you'll invest some time in it. If you get one it wont be wasted money, but like prerich said ,if youre happy with where your at then that's what counts
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Old 04-25-2016, 01:48 AM   #22
prerich prerich is offline
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Quote:
Originally Posted by Jeff Leun View Post
I use a miniDSP, found it to be quite useful to smoothing out a hump at 40hz and dip at 70hz. Night and day , Im a semi tech tard on some level, that said anyone can use it if you'll invest some time in it. If you get one it wont be wasted money, but like prerich said ,if youre happy with where your at then that's what counts
I'm in the miniDSP camp now and I love it! Bass was pretty flat without EQ, REW only applied 4 filters!
Infinity Composition Prelude P-FR, Infinity Composition Overture 1 - center, 2 Infinity QPS-1 front pres & side, Infinty P-QPS rear pres, NXT (X2) rear, Infinity QPS-1 overheads, 2 AE AV15 Power Cube subwoofers, SVS 16-46 CS (X2) 2 DCM Subs (rear), Yamaha Aventage RX-A3020 (front presence and Prepro), Yamaha MX-830 (rear presence), B&K 200.7 Reference Amp, Behringer NU4-6000 (subs),miniDSP 2X4, BD HTPC, NAS 20tb , Da-lite 16:9 106", Infocus 1080p 3D Proj, LG 55 TV.
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Old 04-11-2017, 06:11 AM   #23
brad1138 brad1138 is offline
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My Emotiva UMC-200 has a built in PEQ, it has 3 bands for the sub. I installed a tone generator in my laptop that I use as a music server. I took readings at the main listening position, from 20 to 100 Hz in 2 Hz increments with an SPL meter. I used the PEQ to flatten it out and I think it definitely sounds better. FWIW, I plotted the results. ("Compensated" is after adjustment for "C" weighting offset)

Home Theater Sony VPL-HW45ES w/Elite Screens Tab Tensioned 125" screen. or Vizio 70"
PrePro Emotiva UMC-200 Amps Citation 5.1 (mains), Harman Kardon signature 2.1 (surrounds & center), Samson S1000 (2x545 watts for Subs) Speakers Mirage M-3si, Mirage M-Csi, BIC V-52 (x4) Subs 2 x SVS CS-Ultra Other PS3/PS4/XBox 2x Adcom ACE-515 Line Conditioner

2.0 System Schiit Modi Multibit DAC>Schiit Freya Tube preamp>HK Citation 5.1>Mirage M-3si.

Last edited by brad1138; 04-21-2017 at 02:43 AM.
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Old 04-11-2017, 06:23 PM   #24
prerich prerich is offline
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Quote:
Originally Posted by brad1138 View Post
My Emotiva UMC-200 has a built in PEQ, it has 3 bands for the sub. I installed a tone generator in my laptop that I use as a music server. I took readings at the main listening position, from 20 to 100 Hz in 2 Hz increments with an SPL meter. I used the PEQ to flatten it out and I think it definitely sounds better. FWIW, I plotted the results. (compensated is after adjustment for "C" weighting offset)

Smoothing?
Infinity Composition Prelude P-FR, Infinity Composition Overture 1 - center, 2 Infinity QPS-1 front pres & side, Infinty P-QPS rear pres, NXT (X2) rear, Infinity QPS-1 overheads, 2 AE AV15 Power Cube subwoofers, SVS 16-46 CS (X2) 2 DCM Subs (rear), Yamaha Aventage RX-A3020 (front presence and Prepro), Yamaha MX-830 (rear presence), B&K 200.7 Reference Amp, Behringer NU4-6000 (subs),miniDSP 2X4, BD HTPC, NAS 20tb , Da-lite 16:9 106", Infocus 1080p 3D Proj, LG 55 TV.
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Old 04-13-2017, 01:17 AM   #25
Dwayne Dwayne is offline
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All that I do to enhance my dual subs is apply Audessey Multi EQ XT32+Sub EQ HT, which applies 256 filters on each sub individually. I feel that alone is enough to provide me with proper balancing and enhancement for the LFE effect on my subs .
7.2 Denon 4520c.i. AVR, Samsung 47" 1080P HDTV, Monster HTS-1600, AMD Custom Built Computer/Media Player, Polk Audio RTi 12 Speaker's-Main's, Polk Audio CS-2 Center, JBL ES 80 Speaker's Surround, Polk Monitor 60 Surround Back, Acoustech 12" PL 200 Sub, Polk Audio 10" PSW 110 Sub, Sony BDP 570-SACD, Panasonic BDP 360 2.0 Onkyo 809 AVR, Polk Audio Monitor 70s, Audio Technica AT-LP-120
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Old 04-16-2017, 06:59 PM   #26
Dwayne Dwayne is offline
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Personally, I thought a lot of people would respond to this one. I guess not .
7.2 Denon 4520c.i. AVR, Samsung 47" 1080P HDTV, Monster HTS-1600, AMD Custom Built Computer/Media Player, Polk Audio RTi 12 Speaker's-Main's, Polk Audio CS-2 Center, JBL ES 80 Speaker's Surround, Polk Monitor 60 Surround Back, Acoustech 12" PL 200 Sub, Polk Audio 10" PSW 110 Sub, Sony BDP 570-SACD, Panasonic BDP 360 2.0 Onkyo 809 AVR, Polk Audio Monitor 70s, Audio Technica AT-LP-120
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Old 04-17-2017, 03:08 PM   #27
brad1138 brad1138 is offline
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Quote:
Originally Posted by prerich View Post
Smoothing?
Is that the proper term? Sorry, wasn't aware.


Quote:
Originally Posted by Dwayne View Post
All that I do to enhance my dual subs is apply Audessey Multi EQ XT32+Sub EQ HT, which applies 256 filters on each sub individually. I feel that alone is enough to provide me with proper balancing and enhancement for the LFE effect on my subs .
My Emotiva has "EMOQ" but it isn't all it is cracked up to be. It doesn't have the ability to just address the sub, and it has messed more stuff up than it fixes. I only want to adjust the sub.
Home Theater Sony VPL-HW45ES w/Elite Screens Tab Tensioned 125" screen. or Vizio 70"
PrePro Emotiva UMC-200 Amps Citation 5.1 (mains), Harman Kardon signature 2.1 (surrounds & center), Samson S1000 (2x545 watts for Subs) Speakers Mirage M-3si, Mirage M-Csi, BIC V-52 (x4) Subs 2 x SVS CS-Ultra Other PS3/PS4/XBox 2x Adcom ACE-515 Line Conditioner

2.0 System Schiit Modi Multibit DAC>Schiit Freya Tube preamp>HK Citation 5.1>Mirage M-3si.
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Old 04-17-2017, 03:20 PM   #28
prerich prerich is offline
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Quote:
Originally Posted by brad1138 View Post
Is that the proper term? Sorry, wasn't aware.




My Emotiva has "EMOQ" but it isn't all it is cracked up to be. It doesn't have the ability to just address the sub, and it has messed more stuff up than it fixes. I only want to adjust the sub.
No, I was wondering if you applied smoothing to your graphs and how much (1/3 octave, 1/6 octave, 1/24)?
Infinity Composition Prelude P-FR, Infinity Composition Overture 1 - center, 2 Infinity QPS-1 front pres & side, Infinty P-QPS rear pres, NXT (X2) rear, Infinity QPS-1 overheads, 2 AE AV15 Power Cube subwoofers, SVS 16-46 CS (X2) 2 DCM Subs (rear), Yamaha Aventage RX-A3020 (front presence and Prepro), Yamaha MX-830 (rear presence), B&K 200.7 Reference Amp, Behringer NU4-6000 (subs),miniDSP 2X4, BD HTPC, NAS 20tb , Da-lite 16:9 106", Infocus 1080p 3D Proj, LG 55 TV.
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Old 04-17-2017, 11:50 PM   #29
brad1138 brad1138 is offline
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Quote:
Originally Posted by prerich View Post
No, I was wondering if you applied smoothing to your graphs and how much (1/3 octave, 1/6 octave, 1/24)?
Ahhh, OK

I just looked, and yes smoothing was turned on in Excel. This is with smoothing turned off.



I only applied 2 EQ adjustments. +3 at 38 Hz with a Q of 4 and -6 at 48 Hz with a Q of 2. I just guessed at good "Q" values. I have since played a bit more, I changed it to restore a bit of the 45-50 Hz hump, maybe 1-2 dB (because I like it, no other reason), but not done yet.

below chart stolen from some other web page that I used:

Below is a partial list of Q factors paired with their approximate ‘width’ in octaves:

0.7 = 2 octaves
1 = 1 1/3 octaves
1.4 = 1 octave
2.8 = 1/2 octave
4.3 = 1/3 octave
8.6 = 1/6 octave
Home Theater Sony VPL-HW45ES w/Elite Screens Tab Tensioned 125" screen. or Vizio 70"
PrePro Emotiva UMC-200 Amps Citation 5.1 (mains), Harman Kardon signature 2.1 (surrounds & center), Samson S1000 (2x545 watts for Subs) Speakers Mirage M-3si, Mirage M-Csi, BIC V-52 (x4) Subs 2 x SVS CS-Ultra Other PS3/PS4/XBox 2x Adcom ACE-515 Line Conditioner

2.0 System Schiit Modi Multibit DAC>Schiit Freya Tube preamp>HK Citation 5.1>Mirage M-3si.
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Old 04-18-2017, 12:26 AM   #30
Vracer111 Vracer111 is offline
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I use this little guy DSPeaker Anti-Mode 8033
HOME THEATER SYSTEM:
Oppo BDP-93, NAD T747, NAD C275BEE, NAD T955
Speakers [Polk]: (F) RTi-A5, (C) CSi-A4, (Side) FXi-A6, (Rear) RTi-A3 (Subs) 2x DSW PRO 500
Display: Epson 8350 w/ 110" Sable Elite Screen Misc: DSPeaker Anti-Mode 8033
HOME AUDIO SYSTEM:
Source: Lenovo Windows 10 laptop w/Foobar2K & FLAC files DAC: Schiit Bifrost (AK4490) Amp: Meier-Audio JAZZ-ff
Headphones: Fostex TH-X00 PH, Monolith M1060(incoming), Philips SHP9500
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Old 04-18-2017, 09:46 AM   #31
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Quote:
Originally Posted by Vracer111 View Post
I use this little guy DSPeaker Anti-Mode 8033
Right there with you. Love how easy this is to use.
Mitsubishi HC7000 projector, Panamorph UH480 anamorphic lens, Stewart Studiotek 120" 2.35:1 screen, Marantz AV7702 MKII, Sherbourn 7/2100 amp (x2) Adcom GFA 7400 (x2) Monster HTPS 7000, Oppo BDP203, Sony SCD 555es, AAD Silver Reference 7, Silver Reference 3C, Silver Reference 1 (x4), AAD M5-t, M-5-x(x8), Seaton Submersive HP+/Slave combo, Def Tech Supercube II (x3), Dspeaker antimode 8033 sub eq system
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Old 04-18-2017, 05:23 PM   #32
Dwayne Dwayne is offline
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Quote:
Originally Posted by Vracer111 View Post
I use this little guy DSPeaker Anti-Mode 8033
Great little piece of equipment .
7.2 Denon 4520c.i. AVR, Samsung 47" 1080P HDTV, Monster HTS-1600, AMD Custom Built Computer/Media Player, Polk Audio RTi 12 Speaker's-Main's, Polk Audio CS-2 Center, JBL ES 80 Speaker's Surround, Polk Monitor 60 Surround Back, Acoustech 12" PL 200 Sub, Polk Audio 10" PSW 110 Sub, Sony BDP 570-SACD, Panasonic BDP 360 2.0 Onkyo 809 AVR, Polk Audio Monitor 70s, Audio Technica AT-LP-120
HOLD ON, FIGHT THE GOOD FIGHT, AND NEVER SURRENDER
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Old 04-20-2017, 08:14 PM   #33
prerich prerich is offline
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Quote:
Originally Posted by Dwayne View Post
Great little piece of equipment .
I use a miniDSP 2x4 and I'm virtually flat all the way down to about 18hz with usable output below that point.
Infinity Composition Prelude P-FR, Infinity Composition Overture 1 - center, 2 Infinity QPS-1 front pres & side, Infinty P-QPS rear pres, NXT (X2) rear, Infinity QPS-1 overheads, 2 AE AV15 Power Cube subwoofers, SVS 16-46 CS (X2) 2 DCM Subs (rear), Yamaha Aventage RX-A3020 (front presence and Prepro), Yamaha MX-830 (rear presence), B&K 200.7 Reference Amp, Behringer NU4-6000 (subs),miniDSP 2X4, BD HTPC, NAS 20tb , Da-lite 16:9 106", Infocus 1080p 3D Proj, LG 55 TV.
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Old 04-20-2017, 08:16 PM   #34
prerich prerich is offline
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Quote:
Originally Posted by brad1138 View Post
Ahhh, OK

I just looked, and yes smoothing was turned on in Excel. This is with smoothing turned off.



I only applied 2 EQ adjustments. +3 at 38 Hz with a Q of 4 and -6 at 48 Hz with a Q of 2. I just guessed at good "Q" values. I have since played a bit more, I changed it to restore a bit of the 45-50 Hz hump, maybe 1-2 dB (because I like it, no other reason), but not done yet.

below chart stolen from some other web page that I used:

Below is a partial list of Q factors paired with their approximate ‘width’ in octaves:

0.7 = 2 octaves
1 = 1 1/3 octaves
1.4 = 1 octave
2.8 = 1/2 octave
4.3 = 1/3 octave
8.6 = 1/6 octave
Good measurments!!!
Infinity Composition Prelude P-FR, Infinity Composition Overture 1 - center, 2 Infinity QPS-1 front pres & side, Infinty P-QPS rear pres, NXT (X2) rear, Infinity QPS-1 overheads, 2 AE AV15 Power Cube subwoofers, SVS 16-46 CS (X2) 2 DCM Subs (rear), Yamaha Aventage RX-A3020 (front presence and Prepro), Yamaha MX-830 (rear presence), B&K 200.7 Reference Amp, Behringer NU4-6000 (subs),miniDSP 2X4, BD HTPC, NAS 20tb , Da-lite 16:9 106", Infocus 1080p 3D Proj, LG 55 TV.
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Old 04-20-2017, 09:52 PM   #35
DangeRuss DangeRuss is online now
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This is a very interesting thread .................

I must see about plotting some graphs here
Visuals by......
Panasonic~ Oppo

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DUAL~ Grado ~ Yamaha ~ Pro-ject ~ Oppo ~ Vincent
Harman/Kardon~ Acoustic Research ~ Light Harmonics ~ acurus ~ Dahlquist
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Old 04-21-2017, 02:38 AM   #36
brad1138 brad1138 is offline
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Quote:
Originally Posted by prerich View Post
I use a miniDSP 2x4 and I'm virtually flat all the way down to about 18hz with usable output below that point.
I am using balanced output to the sub amp. Most if not all of these outboard DSPs are RCA.

I am not really worried about having it completely flat, getting rid of the near 20 dB jump from 38 Hz to 48 Hz that I had, made a big difference. I also have usable below 20 Hz, but the problem with that is some movies, and even commercials or TV show bumper tracks, contain so much really low bass, the walls and ceiling vibrate and shake, even at low to moderate listening levels. I love that, but it seems a bit unnecessary at times. I have though tailoring it of from about 25 Hz down, might be a more enjoyable experience, I can't "hear" anything below about 25-30 Hz anyway.

Also, I am not sure how precise the microphone in my Radio Shack SPL meter is, the variations could be as much contributed to that.
Home Theater Sony VPL-HW45ES w/Elite Screens Tab Tensioned 125" screen. or Vizio 70"
PrePro Emotiva UMC-200 Amps Citation 5.1 (mains), Harman Kardon signature 2.1 (surrounds & center), Samson S1000 (2x545 watts for Subs) Speakers Mirage M-3si, Mirage M-Csi, BIC V-52 (x4) Subs 2 x SVS CS-Ultra Other PS3/PS4/XBox 2x Adcom ACE-515 Line Conditioner

2.0 System Schiit Modi Multibit DAC>Schiit Freya Tube preamp>HK Citation 5.1>Mirage M-3si.

Last edited by brad1138; 04-21-2017 at 02:45 AM.
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Old 04-21-2017, 01:52 PM   #37
prerich prerich is offline
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Quote:
Originally Posted by brad1138 View Post
I am using balanced output to the sub amp. Most if not all of these outboard DSPs are RCA.

I am not really worried about having it completely flat, getting rid of the near 20 dB jump from 38 Hz to 48 Hz that I had, made a big difference. I also have usable below 20 Hz, but the problem with that is some movies, and even commercials or TV show bumper tracks, contain so much really low bass, the walls and ceiling vibrate and shake, even at low to moderate listening levels. I love that, but it seems a bit unnecessary at times. I have though tailoring it of from about 25 Hz down, might be a more enjoyable experience, I can't "hear" anything below about 25-30 Hz anyway.

Also, I am not sure how precise the microphone in my Radio Shack SPL meter is, the variations could be as much contributed to that.
Yep!!! Your right about the shaking and it being unnecessary at times. The miniDSP comes in Balanced and unbalanced flavors. I think its one of the best tools I've ever purchased.
Infinity Composition Prelude P-FR, Infinity Composition Overture 1 - center, 2 Infinity QPS-1 front pres & side, Infinty P-QPS rear pres, NXT (X2) rear, Infinity QPS-1 overheads, 2 AE AV15 Power Cube subwoofers, SVS 16-46 CS (X2) 2 DCM Subs (rear), Yamaha Aventage RX-A3020 (front presence and Prepro), Yamaha MX-830 (rear presence), B&K 200.7 Reference Amp, Behringer NU4-6000 (subs),miniDSP 2X4, BD HTPC, NAS 20tb , Da-lite 16:9 106", Infocus 1080p 3D Proj, LG 55 TV.
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Old 04-21-2017, 05:18 PM   #38
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Quote:
Originally Posted by brad1138 View Post
I am using balanced output to the sub amp. Most if not all of these outboard DSPs are RCA.

I am not really worried about having it completely flat, getting rid of the near 20 dB jump from 38 Hz to 48 Hz that I had, made a big difference. I also have usable below 20 Hz, but the problem with that is some movies, and even commercials or TV show bumper tracks, contain so much really low bass, the walls and ceiling vibrate and shake, even at low to moderate listening levels. I love that, but it seems a bit unnecessary at times. I have though tailoring it of from about 25 Hz down, might be a more enjoyable experience, I can't "hear" anything below about 25-30 Hz anyway.

Also, I am not sure how precise the microphone in my Radio Shack SPL meter is, the variations could be as much contributed to that.
Here's a webpage that might help with the readings you'll get from the Radio Shack meter ....................

http://www.subwoofer-builder.com/SPL-corrections.htm
Visuals by......
Panasonic~ Oppo

Audio by...
DUAL~ Grado ~ Yamaha ~ Pro-ject ~ Oppo ~ Vincent
Harman/Kardon~ Acoustic Research ~ Light Harmonics ~ acurus ~ Dahlquist
SVS
  Reply With Quote
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Dwayne (04-21-2017)
Old 04-21-2017, 06:26 PM   #39
Dwayne Dwayne is offline
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Quote:
Originally Posted by prerich View Post
I use a miniDSP 2x4 and I'm virtually flat all the way down to about 18hz with usable output below that point.
Wow, very impressive .
7.2 Denon 4520c.i. AVR, Samsung 47" 1080P HDTV, Monster HTS-1600, AMD Custom Built Computer/Media Player, Polk Audio RTi 12 Speaker's-Main's, Polk Audio CS-2 Center, JBL ES 80 Speaker's Surround, Polk Monitor 60 Surround Back, Acoustech 12" PL 200 Sub, Polk Audio 10" PSW 110 Sub, Sony BDP 570-SACD, Panasonic BDP 360 2.0 Onkyo 809 AVR, Polk Audio Monitor 70s, Audio Technica AT-LP-120
HOLD ON, FIGHT THE GOOD FIGHT, AND NEVER SURRENDER
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Old 04-22-2017, 04:30 PM   #40
brad1138 brad1138 is offline
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Quote:
Originally Posted by DangeRuss View Post
Here's a webpage that might help with the readings you'll get from the Radio Shack meter ....................

http://www.subwoofer-builder.com/SPL-corrections.htm
Interesting, thanks.

That offset is nearly identical (give or take a dB or 2) to the "C" weighting offset curve. If you adjust for that, the meter is accurate to within 1-2 dB, which is fine for me.

http://www.diracdelta.co.uk/science/...l#.WPuFGtLyuUk
Home Theater Sony VPL-HW45ES w/Elite Screens Tab Tensioned 125" screen. or Vizio 70"
PrePro Emotiva UMC-200 Amps Citation 5.1 (mains), Harman Kardon signature 2.1 (surrounds & center), Samson S1000 (2x545 watts for Subs) Speakers Mirage M-3si, Mirage M-Csi, BIC V-52 (x4) Subs 2 x SVS CS-Ultra Other PS3/PS4/XBox 2x Adcom ACE-515 Line Conditioner

2.0 System Schiit Modi Multibit DAC>Schiit Freya Tube preamp>HK Citation 5.1>Mirage M-3si.
  Reply With Quote
Thanks given by:
Dwayne (04-22-2017), prerich (04-25-2017)
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