Jump to content


Crowndog

Member Since 29 Sep 2008
Offline Last Active Apr 05 2013 04:29 PM
-----

Topics I've Started

Delat/Omega 2000 Alignment revealed

31 March 2013 - 08:06 PM

I have the procedure for alighning the Delta/Omega 2000 input board if anyone is interested. It was very difficult to obtain but has been found. I would like to get it posted in the Discontinued Support section but the Administrator has not answered my message. Hopefully this will be read.

Need some sound 101 Advice about Pink Noise

26 February 2013 - 08:26 PM

I need some help with the topic of Pink noise from the collective here. Please help me with this issue as it is getting more confusing the more I look into it.
I am Eq-ing my room. I have at my command a Crown RTA-2 and a digital RTA. Both have Pink noise sources. I also just refurbed all the filters in the RTA-2 by replacing the known to go bad tantalum caps and the electrolytics. I have the EQ2 equalizer and the digital RTA has a digital 31 band 2 channel equalizer as well.
I bought a dongle type device that has microphone balanced output of Pink noise which I was going to use to calibrate the RTA-2 filters. I checked it's output and it is sloped 3db/octave. All the other Pink noise sources are flat. Now I know that Pink noise is white noise that has been filtered with a 3db/octave filter but has equal spectral power across the spectrum. So should the output of a Pink Noise source be flat or sloped? The Crown RTA-2 Pink noise is flat in the manual graph and on the digital RTA. and on the Crown RTA-2 it's self. The digital RTA Pink Noise source is flat on it's own RTA and on the Crown RTA-2. The dongle is sloped on both.
I think the device is wrong. The creator/manufacturer insists it is correct. Help! what is going on here?

Schematic for later D150A

05 November 2012 - 07:24 PM

I ran into a situation. Getting ready to replace caps in three D150A amps and the boards are not like the schematics here on the support page. Can anyone please send me schematics for rev B through E? I will send an email when I hear from anyone. Help! Thank you.
p.s. there are six pots on my board but only four on the schematics.