joust

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About joust

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  1. Bonjour Mike, We are located in Montreal : SC Media Canada Montreal, Quebec, Canada (514) 780-0808 Note : A special 'foam' (Crown p/n 134882-1) is set on one of the output transistors (under the forked clamp) to secure the thermal sensor of that channel. Depending on the heat stress the amps have received, this foam can harden and become useless in sensing the thermal temperature of the output device. I would recommend a yearly investigation of these foams to determine their elasticity; Replace both foams, if one is found hardened. Refurbish other output components (clean and replace thermal paste); Reform clamps before re-installing. Lastly, ajust underlap/overlap level controls ('bias' procedure for BCA amps) of the output carrier signal. Hope this helps! Regards, Alain
  2. We (Canada) are still servicing Itechs. However, we've had some IT service refusals from Crown USA, citing parts unavailability (mostly modules). What seems to be your issue? A.
  3. Hi! Welcome to the forum! Bandmanager (http://www.crownaudio.com/en/softwares/crown-hiqnet-band-manager-2-v2-00-0-0-r1-windows) is a visual communication and a DSP configuration interface for the XTI amplifier. Note that the CDI equipment, similar to the XTI, cannot communicate with Bandmanager; Use Audio Architect for this purpose. Bandmanager II is the current interface for the XTI'02 product. As for HiQNetSetter, it is 'part' of the Audio Architect application (http://audioarchitect.harmanpro.com/en-US/softwares). It can be used to facilitate and edit communications protocols between amplifier and computer (router). The NetSetter application cannot edit amplifier DSP configuration, it would need the Audio Architect interface to communicate with the amp. Alain
  4. Jim, Can you supply an evaluation file? A.
  5. Hello, Where does this tuning file come from? Can you supply a test preset file for evaluation? A.
  6. As I mentionned earlier , have you installed BandManager or Audio Architect? A.
  7. Have you installed HiQnet's BandManager (I or II) or Audio Architect? A.
  8. If I can add my two cents worth : On powering up, the amp generates some power to the Secondary side to support the Soft Start and Doubler relay actions. This power is generated by a 3.3V (Q803) regulator. I've found the 470uF (C815) and the preceding 220uF (C811) filtering capacitors out of tolerance, perhaps thermally. Replaced the two caps and the cycling stopped. Hope this helps! A
  9. Just as a note, your English is quite well! When taken out of the chassis, I believe the audio ground is not at the same potential as the main ground; There is a small impedance (82R) between the XLR pin 1 and main ground or chassis. Also beware of the V_BULKRTN or the SMPS '0'V reference! This is the Primary side of the amp and should only be referenced when inspecting the sample mode power supply. Do not use or tie this point as your Secondary 'ground' reference!!! This point is never tied to main ground or Secondary side ground reference. Are you sure that the 'Secondary side' you are referencing is not the BULKRTN reference? All audio and amplifier references is to the Secondary reference (main ground) or XLR pin 1. Chassis ground and main board ground should be tied together. Audio ground is lifted slightly by the 82R resistor. Speaker negative lead is also tied to ground. Don't worry about the noise floor at this time. NEVER TIE THE PRIMARY REFERENCE TO MAIN GROUND! Usually, I will use either XLR pin1 or the speaker negative lead, off of my main ground reference. XLR pin 1 to any analog or secondary ground : 82R Secondary ground to Primary ground : Z is very high! Please advise!
  10. Note : Because the power supply is an smps, there may be issues when using the Variac within the minimal low voltage protection range of the amp. The smps may not fire before it has reached the minimal voltage level. Note : SMPS is very protected! If it doesn't fire check all output devices for shorts. I've had no ill effect in troubleshooting with the main board out of the chassis. Alain
  11. What is the working voltage of the amp? Is it compatible with your AC voltage? Relay turning on and off : Check the low voltage LV+ and LV- : Possible motor boating caused by open filter cap in the secondary circuit. Advise! Alain
  12. I was about t to add : - ULOL (underlap/overlap) adjustement on the output module; I hope this helps your troubleshooting! A
  13. Inside the input bay, you will discover, (if you hadn't discovered it yet!) a 'gain' switch, one per side. The position closer to the rear is for when using '4-8 ohms' speakers. The middle and far end are for 'distributed' systems. Is it possible that the fellowship speakers are 'true' speakers, instead of distributed? Then the 'gain' switch should be switched towards the rear (4-8 ohms). If the speakers were distributed, then the gain switch should be set appropriately to the correct mode. Since both speaker systems are 70V lines, the two 'gain' switches on both amps should be set to 70V. Clipping could have multiple origines : - input preamp issue : program is too strong and clips input preamps; program is normal, but the input preamp has issues; - output issues : make sure that there is no 'short' on the lines : this can cause also cause the output to sound 'clipped'. - A.