Audio Investigations: Current Crossover Settings

Sunday, January 11, 2015

Current Crossover Settings

As of January 10, 2015

Behringer DEQ (used for Acoustat high pass and EQ)

Parametric EQ's

80.5 Hz, LC, -15.0dB; 1/2 of LR24

227 Hz, 1Octave,+3dB; sweetener Eq added 1/4/2015

Gain Offset 0dB
Delay 4.14 msec Left and Right

Behringer DCX (Used for subs and super tweeters)

SW Left

A -14.1dB

LR24, 80 Hz

EQ's

1. 20 Hz, +1.0dB, Q3.5; room curve boost

2. 45 Hz, -7.0dB, Q4.0; #1 room mode

3. 39 Hz, -3.6dB, Q5.6; #2 room mode

4. 32 Hz, +4.0dB, Q4.0; room curve boost

5. 68 Hz, -3.0dB, Q3.2; #3 room mode

6. 20 Hz, -3.0dB, Q1.0; Tilt down to cancel excess up tilt

Delay 0.1msec

SW Right (Gain pot straight up)

B -14.1dB

LR24, 80 Hz

EQ's

1. 27 Hz, 0dB, Q1.6; old boost discontinued

2. 45 Hz, -5.0dB, Q5.0; #1 room mode

3. 66 Hz, -3.0dB, Q3.2; #3 room mode

4. 32 Hz, +3.0dB,Q2.0; room curve boost

5. 25 Hz, 0dB,Q1.0; old boost discontinued

Delay 1.15msec+0.29msec

ST Left

A -2.0dB

Bu48,20kHz

Delay 2.18ms+1.31ms

ST Right

B -2.0dB

Bu48,20khz
Delay 2.56ms+1.02ms

All Polarities are NORMAL.

Both Subs fed through XLR 10dB attenuator.

N.B. Cutting Subwoofer level is difficult; SVS's are high sensitivity compared with Behringer DCX which has high output, even with 10dB attenuator. "gain pot straight up" is at least -3dB, which may be what is dialed in other side but not sure. Experimental cut to SW Left will require adjusting SVS input level, fortunately it's a digital level control. With level adjust, EQ 6 may go away.

Currently listening to my altMusic folder random shuffle through Sonos, taking a break from Pandora and William Orbit. Beatles playing right now.

Bedroom System

DCX
Sub
-13.7dB Sum
80 Hz LR24 LP
Delay 0
EQ 50 Hz -4.0dB Q4.0; Room Mode

Mains
-1.9dB A or B
80 Hz LR24 HP
Delay 3.49 ms
EQ 107 Hz +4 Q3.5; sweetener added 1/4/2015 re floor/ceiling cancellation

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Living Room System

2-way with Acoustat 2+2 from 125Hz to 17k, and a pair of SVS Ultra PB 13 below 125Hz (linear phase LR8 crossover). Now using the best from 2 pairs of 2+2's, one white and one black, EQ'd to be the same. Acoustats powered by Aragon 8008 BB. All amps including Subs and Tweeters driven by Emotiva Stealth DC-1 DACs. DACs for each way driven by AES from Behringer 2496 DEQs (EQ and limiting), driven by AES from MiniDSP OpenDRC (linear phase FIR crossovers or corrections generated by RePhase). Driven by AES from a Henry Engineering AES 4-way splitter. Driven by AES from a Tact RCS 2.0 Digital Preamp with Room Correction and PEQ bypassed. The Tact receives most sources as digital. Analog sources are converted to digital at 24/96 by Lavry AD10 analog to digital converter on the side wall and sent via a 12 foot AES cable to the Tact. Emotiva XSP-1 serves as phono preamp and analog selector and level adjuster feeding the Lavry. Oppo UDP 205 plays most discs, and does streaming from my library and Qobuz using Roon, through digital coax output to the Tact, but in other cases through HDMI and a Kanex Pro De-Embedder, and in the rare remaining cases (used to be more) where neither digital transfer method retains full resolution, analog through balanced cables to the Emotiva and Lavry. Denon DVD-9000 plays HDCDs better than anything I know of and connects to Emotiva and thence Lavry for conversion to 24/96. A Sonos Connect is an alternate Tact source, and destination for the Pioneer F-26 FM tuner, which also plays in other rooms through Sonos. A Dynavector 17DIII is mounted to the hockey-tape dampened Ittok tonearm on a Linn Sondek LP12 with Lingo external power supply, using a Michell plastic low spindle clamp is with a trimmed felt washer. There are seperate AC circuits for Subwoofers, Acoustat Poweramps, and Rest of System. The Rest of System circuit is conditioned and regulated by a Panamax MB 1500 and served via a variety of audiophile grade power strips. Single ended digital cabling by Blue Jeans Cable using Belden coax, and Blue Jeans LC-1 audio cabling. AES by Canare, Mogami, Gotham City, and Geistnote/Canare. PTFE balanced audio cable by Surf Cables. Speaker wire mostly hand twisted milspec PTFE coated 12g silver plated copper. Playlists generated by mplay version 0.69 soon to be released.