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About rglasservision

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  • Interests
    Restore and maintain Crown legacy equipment. Also rescreen front panels of legacy equipment. Also like to help others with problems obtaining parts knobs,bulbs etc.-non-profit
  1. The question is: Do you feel any different after standing in front of the fans blowing out after awhile? Warning! This could be habbit forming and everyone will know where to find you standing behind the racks.
  2. [Dear Dave, Many folks (like myself) seem to try to improve something that already works well. Without opening the box you really can't tell what is going on with an added switch. That being said, I once put a switch on a D150A like you mention to reverse phase on the one channel. Why? because it was easier to flip a switch than climb up a ladder to some kitchen speakers or get behind the amp and reverse the wiring. Just a thought. Best bet is to look and see what the wires from the switch go to. Good luck! -Bob
  3. Dave, Would I still use the 10K ON THE OLDER D150?
  4. Dear Dave, Big thanks on this one. I am really amazed and very grateful for youe help and knowlegde! Thnk you again! -Rob
  5. Dear Dave: Thanks for responding. I will get it working after I consult with the folks at A.E. Techron and keep you posted. Any thoughts on getting that IOC signal off the D150 board for my other wayback upgrade?
  6. I used a blown up D150A w/ioc front panel to allow use of the input controls, mounted to a D150 chassis that is in perfect order. I have also mounted the IOC board and connections to power it. My question is: where can I get the control signals for the IOC board off the D150 board? Anyone have detailed knowledge of where I can get the error signal from?
  7. Yhank you for the reply. I have this manual but am not clear on exactly how to connect this to the control plug on the back of the M400's. Any further help?
  8. I use 4 M600 amps and would love to use the RSVP unit to control turning them on and off. Has anyone any clue if this is possible? Dave any ideas? any help would be great. Thank you.
  9. Thank you!
  10. Dave, Thank you for the prompt reply. It is my understanding that ground loops are usually formed when the ground of the input is connected some way to the ground of the output. Traking down the "where" is usually the hardest task that I have encountered in complex systems. I will now go back and uninstall the gray adapters (per your advice) and try to determine the "where" in each problem system with ground loops. Great weekend project.
  11. Most of the older Crown Amps and preamps call for "select components", usually output transistors. Without access to the proper eqipment to evaluate and measure the output characteristics of the devices is there a "quick and dirty" approximation method to do this? Does Crown still sell in the parts department matched components? Any thoughts or ideas would be helpful. Thank you.
  12. Got your letter, bulb sent! -Rob
  13. You might try www.alliedelec.com they have a good selection of lighted rectangular power switches.
  14. I have never done this fix but it was on a web site that I read some time ago. The claim was that by placing a toothpick or two in the windings of the transformer it stopped the vibration or hum coming from the unit. Caution:dealing with potential danger here but others responding claimed it worked. I make no such claims or guarantees.
  15. Got it. Clarified. Thank you. Question? In another system that I have I had a ground loop and found that if I cliped off the ground spades around the rca connector to the amp from the preamp it got rid of the ground loop. Since this is low voltage am I risking the "shock"? What I meant by the input side was: the use of the adapter on the AC plug on the preamp, or other input device to the amp. However, you have settled the question.