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Author Topic: CP65 volume lower...why? Paul Vollmers Expert Film Handler Posts: 161 From: Sister Lakes, MI, USA Registered: Jul 2001 posted 04-22-2005 09:54 AM                     On a CP65........what would cause the volume to drop 1.5 numbers on the main fader control. L C R and suround seem to be working fine but the volume level is lower then last used. Any ideas? Paul  |  IP: Logged Darryl Spicer Film God Posts: 3250 From: Lexington, KY, USA Registered: Dec 2000 posted 04-22-2005 10:02 AM                    Has a remote fader selection button been pushed or something?  |  IP: Logged Mitchell Dvoskin Phenomenal Film Handler Posts: 1869 From: West Milford, NJ, USA Registered: Jan 2001 posted 04-22-2005 10:35 AM                     Exciter lamp/leds dimmer for some reason?  |  IP: Logged Michael Schaffer "Where is the Boardwalk Hotel?" Posts: 4143 From: Boston, MA Registered: Apr 2002 posted 04-22-2005 01:03 PM                        The fader knob could just be loose/shifted on the base. In that case, there is no problem with the CP, the knob is just fooling you as to where the fader is.  |  IP: Logged Paul Vollmers Expert Film Handler Posts: 161 From: Sister Lakes, MI, USA Registered: Jul 2001 posted 04-22-2005 06:37 PM                     Neither main fader or remote fader was not touched.... The exciter lamp voltage is the same.... And the main fader knob is not loose........ could a pre amp be weak..??? now what?  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 04-22-2005 07:31 PM                     Are you playing the same print? Occasionally you get a stupid movie like Charlie's Angels or xXx that is WAY too loud.  |  IP: Logged Paul Vollmers Expert Film Handler Posts: 161 From: Sister Lakes, MI, USA Registered: Jul 2001 posted 04-22-2005 07:52 PM                     Brad, I have been running only one test reel with many trailers only. If the exciter wires were reversed + , - ,on the exciter power supply.......could that effect the volume level at play back? I was at level 4 on the CP65 fader, and now at level 5 to get the same sound listening level........wierd.  |  IP: Logged Darryl Spicer Film God Posts: 3250 From: Lexington, KY, USA Registered: Dec 2000 posted 04-22-2005 08:48 PM                    Wait a tick......are you using a Jax light red led system or a system that requires a line amp between the solar cell and the pre-amps. If so there could be a problem with the line amp.  |  IP: Logged Paul Vollmers Expert Film Handler Posts: 161 From: Sister Lakes, MI, USA Registered: Jul 2001 posted 04-22-2005 10:04 PM                     I'm using a plain white exciter lamp on a Simplex E7 and a Simplex SH1000 sound head, with a 9V bulb at 7 volts powered by a Kelmar exciter power supply, and a CP65, dolby tone aligned etc...........home screen.  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 04-22-2005 10:28 PM                     Let's back up a minute. What has changed since this problem occured?  |  IP: Logged Phil Hill I love my cootie bug Posts: 7595 From: Hollywood, CA USA Registered: Mar 2000 posted 04-22-2005 11:30 PM                  quote: Paul Vollmers I was at level 4 on the CP65 fader, and now at level 5 to get the same sound listening level........wierd. Hopefully you're taking actual SPLs and not just "listening". Assuming you have measured the voltage at the exciter lamp and it is correct, perhaps the objective lens has dirt/oil on it or maybe the lamp filament has sagged.  |  IP: Logged Paul Vollmers Expert Film Handler Posts: 161 From: Sister Lakes, MI, USA Registered: Jul 2001 posted 04-23-2005 09:07 AM                     A few days ago I had to move the sound rack several feet. I disconnected the following wires. Exciter power wire two speaker wires optical sound wires I made sure that these wires were connected to the same locations on the CP65. No volume settings were changed at all. The only question on re wireing was the plus and minus wire to the exciter power supply maybe reversed.......could that effect the volume level? The exciter voltage is the same.....I checked that. I also cleaned the optical lens for dirt...none. After the move.......I loaded the same trailer reel...and noticed the differant volume level.......much lower. so.......?  |  IP: Logged Darryl Spicer Film God Posts: 3250 From: Lexington, KY, USA Registered: Dec 2000 posted 04-23-2005 10:46 AM                    can you run pink noise and set all the sound preasure levels. If you thing two wires are hooked up wrong switch them and see if this changes anything.  |  IP: Logged Adam Martin I'm not even gonna point out the irony. Posts: 3686 From: Dallas, TX Registered: Nov 2000 posted 04-23-2005 12:06 PM                     Did you have to add length to any of the wiring?  |  IP: Logged Paul Vollmers Expert Film Handler Posts: 161 From: Sister Lakes, MI, USA Registered: Jul 2001 posted 04-23-2005 12:08 PM                     No wire length was added.........just moved the sound rack from one side of the projector to the other side.  |  IP: Logged

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