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Found 7 results

  1. Further Information: Best speaker and room calibration unit I have ever used. Also functions as an active crossover and allows integration of sub woofers into the system. This unit corrects speakers first and then corrects the room. It functions as a digital preamp with remote (also has an analogue input). More info here: https://www.deqx.com/products/hdp-4/ I ran this with Bel Canto / Quad Amps and Wilson Audio Watt Puppy 8s, sounded superb. I'm no longer able to run a seperate audio and video room so I'm selling down my audiophile gear and Ive upgrade my video processor to an Anthem AVM 90.
  2. Further information: Well respected, reviewed and revered speakers, Legend Big reds. These are the fully active version with DEQX Pre amp with 4 channels of hype power for tweeters and mids and crown power to the 4 10" peerless woofers! I bought these from a local member after hearing them at his place and falling in love! That said I have just purchased a massive pair of horn speakers and already have Genesis towers so something has to give... Listening Impressions - Active One of my reference recordings is the superbly produced Duet by guitar virtuosos Sylvain Luc and Bireli Lagrene. Legend's Kumbar Wirris conveyed an enormous amount of detail and power from the aggressively strummed guitar chords. Indeed, in those areas -- as well as in transient speed -- the Kumbar Wirris were on par with my far more expensive Wilson WATT/Puppy System 6 reference. Every finger pluck and string vibration was reproduced clearly and cleanly with superb harmonic content confirming the quality of the ceramic tweeter and the seamless crossover to the midrange driver.Voices, whether male or female, were crisp and extremely present (if slightly forward), giving the impression of vocalists being with me in the room. The micro detail was outstanding, with low-level vocal intonations and subtleties clearly discernible. Complex music such as the Flamenco/Indian-flavored beats of Curandero's Aras is intricately separated, making all instruments within the mix easily discernable and yet the Kumbar Wirris maintained the musical whole coherently. They are extremely accurate and transparent transducers and with good recordings, they present the music with an uncanny sense of realism. Having said that, they can also be ruthlessly revealing in that they will transmit all the hardness, compression and frequency mudding that unfortunately are the product of mediocre audio engineering and poor studio techniques. On Patricia Barber's superb Modern Cool disc, the Legends present her image locked center stage, the speakers never compromising their tight focus on all images. Soundstage width is almost wall to all and depth is adequate. This recording features realistically captured upright bass and here the Kumbar Wirris also excelled. Overall bass quality is outstanding, with power, depth and punch being as good as it gets. Rarely have I heard such detail and pitch accuracy when combined with 20-cycle depth. Bass notes stop and start on a dime such is the speed of these 10-inchers, and there's a chest-numbing wallop in the kick drum that propels the music along and makes Rock recordings very enjoyable indeed. 6moons review
  3. Hi guys, I considered just adding this post to the DEQX Owners thread, but it would likely get buried there. I'm seeking tips on a specific area, but any DEQX tips could be added here later. I've noticed other DEQX users (particularly @Jiri-AU ) have much more useful information on screenshots they've taken during the DEQX config process. eg The Master and Slave designation, and the bracketed info is very useful for finding stuff later in the Project Explorer. I'd particularly like a good method for identifying the Xover and slope of correction filters after the fact (they always appear as Correction Filter 1, 2, 3 etc), not as something like Xover TD18 to PSE 350Hz 96dB/oct. Are there some tips others have found useful for what info to put where during the measure/calibrate/config to make everything easy to find? I'm finding it twice as hard right now mucking with 2 DEQX units, and everything is in the same project file, but I need to know what I created for the Master vs the Slave. cheers Mike ps I found @@aechmea 's tip on gain matching very useful ages ago (and about to use it again today) - I'll dig that up and put a link in this thread
  4. Hi Guys, I've been mucking with my DEQX tonight, doing some "In Room" speaker measurements and calibrations... @@artaudio , it would be great if you could chime in Alan ! My setup is a DEQX HDP3 triamped in a 2 way + stereo sub arrangement - stereo PSE144s + stereo TD18s (the TD18s are "subs" in this config). TD18s cover ~30Hz - 300Hz PSE 144s cover 300Hz - 20kHz Based on some discussions with Jiri (@JiriAU) I've been doing bass speaker measurements/calibration/correction at the listening position for the TD18s - seems fair for frequencies below 250-300Hz. Did some measurements tonight and noted a big hole around 50 - 80Hz (like 20dB) for both speakers but at slightly different frequencies, which implied to me that it was Speaker Boundary Interference Response (SBIR) rather than modal issues - I moved the speakers a little and the measurements changed quite a bit (mic never moved, and the left side measurement changed to a double dip, the right dipped less, and frequencies changed again, so to me more SBIR than modal).. Using EQ to fix dips/suckout caused by SBIR is even more problematic than using EQ for modes (IMHO) - if you have a problem mode at the listening position, you could use EQ to fix it at the listening position, and you've fixed it elsewhere in the room. SBIR depends on the speaker and the listening position and path length differences to boundaries and LP etc, so using EQ is even more likely to make it worse elsewhere. I was challenged in trying to build a correction filter for the TD18s based on listening position measurements, where I didn't want to try and fill a deep 50-70Hz hole caused by SBIR.... i ended up reducing the upper correction threshold to 50Hz. This got me thinking about DEQX measurements/calibration/correction and SBIR issues when making "in room" measurements: clearly speaker placement plays a significant part in this you don't want to make speaker corrections based on measurements affected by SBIR you can't do proper "anechoic" measurements below around 200Hz, even outside, so you may as well measure "in room" For the best DEQX implementation below say 200-300Hz, my thinking is: measure each TD18 close mic'd "in room", and calibrate/correct for freq response/group delay based on this measurement (which will exclude room modal or SBIR effects) . apply speaker correction based on the close mic'd measurements (FIR/linear phase corrections) do further corrections based on "in Room" listening position measurements - these corrections would be using the DEQX parametric EQ (PEQ - IIR/minimum phase) corrections This would provide a speaker correction without room effects - room effects are then addressed through 'room correction" This approach would only work in a 3 way "bi-amp + optional stereo subs" config - otherwise you can't do individual sub (TD18) close mic'd measurements. Other DEQX owners thoughts/opinions on this aproach? (or any non-DEQX owners that wish to chime in) cheers Mike
  5. Hi guys, edit 5/11/14 - Dave has pointed out that aligning peaks in the step response is a flawed approach - more edits to follow... edit 7/11/14 - great discussion below so I won't edit the initial tutorial based on step response. I'll add at the bottom the official DEQX approach using impulse response - although as Dave has pointed out, with real world drivers and rooms this can also have issues identifying the apropriate peaks to time align.... Original post starts here - but don't use the Step Response: Jiri showed me how to do this and I thought I'd share... It would be better if I did it absolutely from scratch, but the kids are in bed and I don't want to start "woop woops" now - hopefully the existing room measurements I've done will sufficiently show the process.... If people are confused with where I've started, I'll edit and go back to scratch In my case I'm aligning stereo subs (really mid bass TD18s) with my mains (PSE-144s), but the process is the same if aligning any main speaker with 1 or more subs. Key points: Use "Room Measurement" not "Speaker Measurement" once the room measurement is finished you must open the room measurement in the Viewer, not the EQ tab - this is because only the Viewer has the Step response option DEQX mutes the gain between measurements - I find it useful to set the gain the same each time so I can compare different measurements - note the gain setting and set it the same for each measurement on the volume slider! note in the EQ tab below all but the FR is greyed out Starting point: tri-amp setup with 2 way mains + stereo subs speaker correction of mains implemented (which should time align tweeter and mid) crossovers implemented Goal time align the main speaker woofers and the sub/subs Steps do a listening position "Room Measurement" of the drivers you wish to time align - in my case left sub, left woofer and right sub, right woofer - note I find it helpful to keep the gain set between measurements the same (DEQX mutes each time) - take note and set it the same for each measurement - in this case -34dB uncheck open in EQ tab and hit "Finish" now hit the "Viewer" button go and find the measurement you just made in the folder structure all the measurements will be displayed - note on the far right all the dB gains are the same as I've already gain set - that's another tutorial on its own! more importantly note you have access to the FR, IR, GD and Step Response buttons at the top - we'll use Step Response - IR would prob work also in my case I'm going to align left sub and left woofer, then right sub and right woofer hit the Step Response button de-select all but left sub in the bottom frame hit normalise to 0dB - this isn't mandatory but helps bring the scale closer for easier comparison now de-select that measurement, select the next and normalise to 0dB - only normalise individual measurements otherwise you get an average - not critical for time alignment - critical for gain setting but that's another tutorial now select 2 measurements you want to time align see how the peaks are mis-aligned now zoom in using the + icon - click and drag over the peaks in the graph when you click on one peak, you'll see the time measurement in the lower right (I can't screen grab as when I move the mouse off the curve it disappears in my case - left sub and left woofer, the mis-alignment was 2ms click on the peak of the sub woofer and look at the time measurement - write it down click on the peak of the woofer and look at the time measurement - write it down calculate the difference - write it down work out which one needs to be delayed - write it down go into Configure select the driver you want to delay (in my case the sub) in the "Time/Level" tab adjust the delay (in my case 2mS) save all to DEQX then do another room measurement to check following the steps above hopefully it should look like this don't worry that the magnitudes are different - this tute is about time alignment! repeat for right sub and woofer remember to "Save All to DEQX" If this was helpful I'll do the same for "Gain Setting" for a tri-amp setup. cheers Mike
  6. The July 2016 meeting of the Sydney Audio Club sees us meet once again for an afternoon of fine music, great sound and amicable company. Each month the Sydney Audio Club presents an excellent high end audio system for our members and guests. Feel free to bring along your own music to test the capabilities of the system or to just share with like-minded music lovers in a friendly and relaxed atmosphere. For July, we are very pleased to have a return of DEQX (http://deqx.com/). Alan Langford of DEQX will present the DEQX speaker correction and room correction system. DEQX last presented to the club at least 5-6 years ago – much has changed and improved in its product line since then. So another presentation is long overdue. Details of the system…. DEQX HDP-5 preamp processor. The HDP-5 (http://deqx.com/product-hdp5-overview.php) is the flagship of the DEQX line. It performs powerful speaker and room correction/calibration. It can do everything you’ll likely ever want to do. It can accept your XLR and RCA analogue inputs. It can accept your USB, SPDIF coax and BNC, AES/EBU, Toslink digital inputs. It handles source switching and volume control. It has its own DACs and can provide analogue output on RCA and XLR. It provides digital outputs for thru, bass, mid/full and highs allowing you to handle active cross-overs inside the DEQX. It’s the ideal tool if you have your own speakers and you’re looking for the ideal active cross-over. (If you don’t need the active cross-over ability you can opt for the DEQX Premate+ instead – it is the same as the HDP-5 minus the active cross-over.) The DEQX units also sport audiophile grade components. And they include their own microphone for taking your room measurements. Just being released now is a Roon-Ready UTP interface. There is a lot in the box for the money. Refer to: http://www.deqx.com/reviews.php http://www.audiostream.com/content/deqx-hdp-5-preamp-processor#PLe2VAcWPDUKWuQU.97 http://www.6moons.com/audioreviews2/deqx/1.html by Edgar Kramer http://www.digitalaudioreview.net/2015/10/from-a-land-down-under-to-rmaf-2015-deqx-calibration/ by John Darko http://forums.stevehoffman.tv/threads/deqx-next-level-dsp-speaker-correction.413840/ DEQX Integrated Amplifier. Fast, clear and clean. This is a prototype and not yet for sale. But hopefully its tantalizingly close – maybe you can spur Alan on to getting it to market. Refer to: Sorry, no links as yet. Epos ES11 speakers. These speakers hail from the 1990’s. These older speakers open up a good opportunity to use DEQX speaker correction. Alan will demonstrate the benefits of speaker and room correction. Refer to: http://www.audioreview.com/cat/speakers/floorstanding-speakers/epos-acoustics/es11/prd_119526_1594crx.aspx Windows PC running Roon. For Alan’s presentation, his source will be a Windows PC running Roon into the DEQX Roon-Ready UTP interface. Rythmik Audio FS12SE Subwoofers. “Articulate bass for the discerning audiophileâ€. We’ll have two of these subwoofers such that Alan can demonstrate the bass cross-over functionality. Refer to: http://www.rythmikaudio.com/F12SE.html Oppo BDP-105D Universal player. We will use the coax digital output of the Oppo (into the DEQX) primarily for our BYO session. Refer to: https://www.oppodigital.com/blu-ray-bdp-105/blu-ray-BDP-105D-Overview.aspx and http://www.whathifi.com/oppo/bdp-105d/review. The second half of the music sessions will be our popular BYO. Members and guests are welcome to offer music to share with us all. So bring along your favourite music on CD/SACD or flash/USB drive. (Sorry, no vinyl this month.) All we ask is that the music and recordings be interesting. We'll ask you to tell us a little about the artist/recording before it is played. Tracks over 6 minutes will be faded out, to give everyone a fair go. Whether you are a novice or a seasoned veteran, you will have the opportunity to listen, learn and share your experiences with others. Feel free to come and hear the capabilities of the system, or to just share the experience with like-minded music lovers in a friendly and relaxed atmosphere. Guests are always welcome – we are a very friendly club so you don't need to know anyone to join us for an afternoon of fine music and sound. Venue: Epping Creative Centre, Dence Park Address: 26 Stanley Road, Epping When: Sunday 10th July 2016 Doors open 1pm Meeting starts at 2pm Best regards, Tom Waters President Sydney Audio Club www.sydneyaudioclub.org.au tomwaters@sydneyaudioclub.org.au
  7. Item: DEQX - model? Price Range: Item Condition: New or Used Extra Info: Looking to buy a DEQX. I have a mint condition Antelope Audio 256 DSD Platinum Dac which could be included in the trade
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