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kelossus

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About kelossus

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    Chris

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  1. I may not be explaining things correct. When I did the speaker correction I opted not to use the filter it generated as I was not happy with the sound. I don't have the understanding at this point to manual tweak it to get a better result. With that I decided to set the crossover using Limit Filters, time align the LF/HF sections and the use a little bit of EQ to clean up the bass response. That would explain why the woofer is 8db louder as no correction was applied and the measurements were taken "raw". The speakers are nearly 50 years old. Alnico magnets, especially woofers are prone to de-mag. That could be the issue or it could be the power amp driving the LF section itself. I will swap the channels on the LF amp tomorrow and see if that makes difference.
  2. No I don't have separate sub-woofers. When I refer to woofers/sub-woofers I am referring to the LF section of my biamp speakers. Crossed at 290hz. I just checked my levels and they are within 1db of each other besides my right sub/woofer. It is a substantial 8db louder. I will play with the channel balance on the LF amp to get it within a db and trim the rest in the Deqx. I notice a bit of a hump in my above FR sweep at the crossover point of 290hz. Tomorrow I will put the LF/HF section in phase and see if it sounds/measures better.
  3. I have done the speaker measurement at 1m which is specified when using the "Calibrate Speaker" option within the software. From my understanding this is the automated DEQX speaker correction which sets the crossover, matches all the drivers, time aligns, applies EQ and fixes any phase issues. I did this and it sounds lifeless. I just dont have the skills to tweak it manually but I am sure someone experienced could make use of it. I have done the room measurement at the listening position which is the basis for the Parametric EQ I am referring to. This is also how I time aligned the speakers. Here is the Room Measurement from the listening position.
  4. I was referring to the Parametric EQ applied in the configuration screen. I have not taken another FR sweep since the DEQX generated the EQ. No I have not level matched since I got the Deqx. I have been going by ear. When you level match do you just sweep each driver at a given frequency and use an SPL meter to match the DB of each driver? Either way running the speakers as they are without level matching generates enough bass, as soon as I apply the time delay that bass is gone. I am running stereo sub's in the Deqx so unsure if running them 5db hotter applies to my system.
  5. So I got the mains/woofers aligned perfectly. I confirmed this with a re-measure. It has completely robbed the speakers of dynamics, the bass sounds very thin. Is it common practice to increase the gain of the woofer section once time aligned? Maybe I have done something wrong. Could phasing issues cause a problem? The LF secition is out of phase with the HF section in my system. The old JBL phasing drives you crazy as there is no set in stone standard. On a positive I played with the room correction and did some EQ in the 26hz-50hz region with subtle but positive results. As recommended I did the EQ in the 26-50hz region with a 5 band EQ, max cut and boost of 6db. I let the Deqx Autoset the EQ and below are the results. Is the amount of EQ at those frequencies too taxing on the amplifier?
  6. Brian is/used to be a Linn dealer so he knows exactly how to setup that TT. For tube amps as far as I know the only guy in QLD up to the task is Paul Baker at Falls Audio. He is down at Reedy Creek but he knows his stuff and designs his own valve gear. Both Brian and Paul are very fairly priced.
  7. A question here for any Deqx guru's out there: Just to recap my speakers are a 4-way hybrid biamp system. The woofers are crossed at 290hz and run active. The HP feeds a passive 3-way network. This is all setup in the Deqx with the Limit Filters. I did not want to dive in too deep with Deqx but am impressed with the unit just as an active crossover. The next step I would like to take is time alignment of the drivers at the crossover point. I have read the article here by Almikel regarding it and also read the Deqx White Paper. Based on the below screenshots am I correct in adding 3.3-3.5m/s of delay to the mains? The top measurement is the sub/woofer and the bottom is the mains.
  8. Item: Conrad Johnson CT6 Tube Preamplifier - Duelund/Jensen/Audyn Bypass Caps & Mundorf/Elna PSU Caps Location: Ipswich QLD Price: $2500 ono Item Condition: Excellent Reason for selling: Payment Method: Pickup - Cash, Paypal, COD Only Extra Info: Here we have a superb CJ tube preamp from their previous CT range. These have a richer warmer sound when compared to the newer CJ preamps which now only use a single tube in the linestage. The CT6 uses 4x 6922's for linestage duties. Volume control is a 100 step attenuator driven by relays, it does click/tick with each volume increment. Bypass capacitors have upgraded to Duelund Alexanders, Jensen PIO and Audyn True Copper caps. The PSU filter caps have been upgraded to Mundorf M-Lytics and other electrolytics changed to Elna Silmic II's. This really is a fantastic preamp for the money and the upgrades take it to another level. Supplied with a quad of NOS 1975 Reflektors and a quad of Electro-Harmonix 6922. Sold with original remote and factory packaging. Apologies for the pictures. My photography skills aren't the best. Specifications: Gain: 26 dB Maximum Output: 15 vrms Output Impedance: 850 Ohms Distortion: less than .1% THD at 1.0 Vrms output Frequency response: at unity gain: 2 Hz to 10OKhz Hum and Noise: 100 dB below 2.5 V Phase:phase inverting Tube complement: 4 x 6922 Mechanical: Dimensions: 15.5D x 19W x 3.315H inches Weight: 19 lbs.
  9. Ok so I ended up buying an old model Deqx to try in my system. Currently using it as a preamp and as an active crossover. I have not played with any sort of correction/eq. In terms of overall transparency the Deqx is light years ahead of my tired 45 year old JBL crossover. Its quite overwhelming to hear the difference. Also the nasty buzzes/hums I had prior have disappeared.
  10. Jeez, PM overload. These are sold pending payment. I should of asked more.
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