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  2. How do I run my XTi4000 at 220v?
  3. Crown CDi 1000 No Power

  4. Itech 4000 problem

    So I still have the amp and it's still doing the same thing but now I see what's happening. If I set the dsp to monitor voltage is fluxuating ALL over the place, when it drops down below 100 the blue light starts blinking and the amp shuts down. I can get it working again if I leave the power button pushed in as I unplug the cord from the back of the amp and slowly plug it back in a few times. Anyone know if fixing this would be under $500? I don't know if I should sell it for parts or try to repair it. I really don't want to spend more than that to fix it. If anyone has experienced this before or knows what the likely fix would be I'd appreciate it. Thanks, Mike.
  5. Help with setup

    Depending what your speakers are rated at will determine how much power you can safely drive them, for myself I drive two 18in woofers rated at 500 watts each with a thousand Watts peak at 4 ohms using one Crown xti 4000. In bridge mode And have never had an issue, I make sure that my amps never clip, I hope this helps
  6. Crown CDi 1000 No Power

    I just checked D31 with R375 still removed and I'm only getting a couple of millavolts DC on both sides of the diode. On TP 28 I have .5V DC and 50V AC? Is that normal?
  7. Crown CDi 1000 No Power

    An update from further testing, C63 test shorted using the diode testing function on my DMM. C64 does not test open, I am not sure if it both capacitors are supposed to be that way. I did a test procedure from this post Remove R375; Scope or check the voltage on the zener, with reference to the bulk return reference (TP21. Note: this is not a chassis ground. BEWARE!) With the resistor removed, four different signals should show on D8: 0V : the load resistor is open : check above; If resistors and D8 are fine, then you may have an issue with IC16, the Fault circuit or the crowbar circuit; 16V: the load resistors are fine, downstream you may have a shorted bypass cap or modulator is disabled (possible short in amp detected); 2V : if steady, then the kickstart cap (C196) is open (apparently, not this case!); 2V : if charging and discharging : kickstart cap is functionning; check the bypass caps (such as C201, C196, etc); I have on D8 2V DC not changing at all. I put the negative lead on ground (I hope thats correct). I also have about 6v AC on c196
  8. Crown CDi 1000 No Power

    I have just received a Crown CDi 1000 from a friend and I'm hoping to get it working for him. He was about to toss it but I said I'll just try, so there nothing to loose. Symptoms are, no power, nothing not even a light flicker and a burning smell. What I have done so far is checked the board for and obvious issues (bad cap, leaky cap, burning marks, etc.). All looked well, I then checked for shorts and found Q28 or Q31 to have been shorted, unfortunately I do not remember which one. I replaced both the with HGTG30N60A4D the correct part. I also checked C196 cap for an issues and it tested fine, but I have a few extra 105 Degree 220uf 50v lying around and replaced it anyway. So with all that done, I plugged the amp in and pushed the power button and... no power, nothing, no lights. But there is no more burning smell, so that's good. So my question is, how might I proceed? I'm really not sure where to check. Any help would be greatly appreciated, and I would be very grateful. I would love to save this awesome amp from the landfill.
  9. Hi, I already have an PRX418s and a xti2002 and I want to get another Prx418s. Now should I get an xti4002 and connect both subs to it and use the xti2002 for other or get another xti2002? What will be the best between these 2 amps?
  10. How do you add your company logo to the crown I-Tech series amplifiers?
  11. I have four original Itech amps in my inventory. I have the outputs attenuated (power output) using the on board processing to suit my applications. Do the ItechHD amps have the same flexibility? Mike M
  12. G'Day folks.. perplexing fault.. CTS 600, with no input nor load, HPF filter switch in 70 and 35Hz position = channel dead quiet. Passes signal happily, amplifies same faithfully. Move switch to FLAT and channel oscillates.. at U101 pin 12 is 10vac @ 26Hz..! Which then is fed to p/amp giving 92vac at spkr.. Visually, clip LED on, -26db LED on, -10DB LED flickering. Nothing palpably hot when amp running this for 5ish mins.. Power rails are clean +/- 15v, and channel 2 is symptom-free. Given the feedback nature it's hard to determine point of origin, although U104 comes to mind as being unstable and beginning to oscillate with the switch is moved.. Has anyone seen similar fault by chance ?? The circuitry around the switch looks so simple and unlikely to be causative, but working mainly on valve amps doesn't really help my plight.. Ideas ? Kind regards from Down Under.. David
  13. Help with setup

    Thanks for the reaponse. God is good i read your comment Sunday morning just before our big festival, so i ended up setting my subs in stereo rather than on bridge. i hear a lot of bass on my jbl though. I set my crossover at 90hz. And cut all the high frequency on the bass input channel and still a lot of bass on my jbls.
  14. Help with setup

    Looking at the Cerwin Vega specs, your subs can handle 500 watts (RMS) @ 8 ohms - this means your xti 4000 should ONLY be run in stereo mode with those subs. Meaning, do NOT run the xti 4000 amp in bridged mode for those subs. If you haven't already, you will damage the subs! Set your xti4000 for stereo mode and connect one speaker to each output of the amp. The xti4000 amp (in 8 ohm/stereo mode) is still a little too much for those subs... so be careful not to push the amp into clipping/limiting too often. Unfortunately, that sound guy does not appear to understand the equipment you are using. The xti 4000 on the Yamaha sv115 is very dangerous to those speakers! Those Yamaha speakers cannot handle the power of the xti 4000. You will need to turn the input attenuaters down on the amp and set some wattage limits. When looking at specifications on speakers, remember, never factor in the "peak" of what a speaker can produce. Look at the RMS ratings and then look at the "continuous" rating. Size your amps to be no more than the RMS rating. The MRX 525 speakers are probably a little safer with the xti 4000 amplifiers, but still... watch the levels.
  15. We ordered an amp from Crown back in June... and still no amplifier!! Are these things still made???
  16. CROWN CT410 Transistors

    I'm a little late coming into this topic but this might help someone in the future. A little know fact is that almost all bipolar power amplifiers use balancing resistors for the the output transistors which can be used as current shunts in the event you don't have an exact replacement transistor or just want to check for the beginnings of breakdown of a transistor which has not yet failed. Sometimes a perfectly working amp can have a transistor in the early stages of breakdown and is conducting more current than the rest. Got it in the shop, might as well do a thorough check while the hood is open. Step 1) Using a very accurate ohm meter, measure each of the balancing resistors and note their values. These are in the milliohm range so you need a meter capable of measuring milliohms accurately. I use an HP34401A with a 4-Wire kelvin lead set. Step 2) Connect the amp up to a dummy load and run a sine wave through it at a medium power level. The higher the power the more accurate the measurement but the higher the risk of transistor damage if there is a gross mismatch. Also good to have handy an IR thermal meter to do a quick relative temperature check and see if something it already running away. Step 3) Measure the AC voltage across each resistor and note the value. Step 4) Calculate the current of each transistor using ohms law which will tell you if there are any current hogs or ones not sharing their weight. (I=E/R) Step 5) Optional. Measure voltage again at high temperature and see if there is any drift as some leaky transistors will only show increase current at higher temps. While this is not as easy as dropping in matched transistors or sets, it can work in a pinch. Sometimes direct replacements are just not available. You might have to try quite a few to find the right match. I wrote all this via memory so I hope I covered everything.
  17. Hello everyone. I run the sound for my church events and i need some help, a lot of help maybe. I want to make sure that im stting everything up correctly. this is my setup mixer: qsc touchmix 16 driverack pa (old version , not pa2) highs: 2 jbl mrx 525's powered by 1 crown xti4000 amp. (One on each channel) lows: 2 cerwin vega el-36c powered in bridged mode by a crown xti4000. (I was told by a sound guy that if a plug them into the amp on each channel i would be underpowered, so he said to bridge them.) monitors: 4 yamaha sv115's powered by another crown xti 4000. 2 on each channel. I run them from 2 aux outputs. i set the crossover on the driverack for the subs from 40htz to 90hrtz and the highs from 90hrtz on. my questions are: are my subs safe handling that power if i dont turn them up so high? Where should i set the limiters? 2- should i set a high pass filter on my highs at very high frequencies? Where do i set the limiters? any advice will be greatly appreciated. God bless!
  18. Trying to get the best setting for running this. How can XOVER setting can help me? I was thinking running XOVER mode, with SUB on channel 1, and the PR12 on channel 2, daisychain. Is this OK? How much power I will obtain with this? and how I can maximize? XTI 2000 (1) Peaver PR12 (2) Black Widow SUB 18" (1)
  19. Help with XLS1002

    I pulled my XLS1002 amp out of the box, hooked it up to speakers and tested it for about 5-10 minutes. It worked wonderfully. Now one channel works normally, but the second channel outputs sound as if it is always at the lowest setting no matter what the knob is at, and at a certain point (about 11 o'clock on the knob) I see an input spike which clips and turns the thermal compression on. On the other channel I'm able to turn the knob up to about 3 o'clock without it clipping. I'm using 16 guage wiring with JBL Control 25-1 speakers. The speaker/channel that works has cabling running about 30ft, the speaker/channel I'm having issues with is running about 15ft. Speakers are 8 ohm and are rated for 200 watts program. The amp is good for a little over 200 watts at 8ohms dual channel.
  20. Help with Crown D-75

    There are a couple of dropper resistors on the main pcb. There's one right in the middle that gets really hot. Make sure pcb isn't burnt up or that the resit or isn't burnt out or has developed really dry loose joint. I have had a d75 that had really burnt resistor. Just typical with normal use. They tend to heat because the pcb is upside down.
  21. Hello again Gang, I am a very happy vintage Crown Audio camper. Each piece I own seems to work properly and continues to sound great. In my home audio systems, I use: * SL-2; * PL-2 & PL-3; * PS-200 & PS-400; * K1 & K2. Is there any preventive work I should have done on any of my gear? I ask this because another amplifier manufacturer (Bryston) suggests their vintage units are eventually sent back to the factory for "refurbishment", which typically includes: * New power cord & power switch; * New filter capacitors & feedback capacitors. Some Bryston owners even have the old-style power square-shaped transformers replaced with the newer "Toroidal" donut-shaped ones, at considerable expense. Finally, do the Crown folks in Indiana still repair their vintage units? I sent a PS-200 to them about 5 years ago for some light work and was pleased with the service, but got the impression I would soon be out of luck owning vintage pieces. Is this true? Thank you.
  22. Brought it to a repair man who said he fixed it, brought it home and it still does the same thing. Got my money back but the amp still turns on, never gives me any ready lights and then after about 5 seconds all channels go into fault mode. Any ideas of types of problems it could be (or what further information needs to be given?)
  23. Arun

    We have a crown ITHD12000 that is not coming online on the AA we are running windows 10 Some amps come online some dont please advise what this could be due to . It shows discovered but we cannot drag it into the room either
  24. The fault light is on. Where do I start to look? Are there any fixes or checks I can do or a service manual I can use?
  25. The fault light is on. Where do I start to look? Are there any fixes or checks I can do or a service manual I can use?
  26. Help with Crown D-75

    I will. Thank you Alain
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