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Old 25th September 2012, 07:27 PM   #161
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The voltage gain for CxD400 400W version is 33.5 or 1.2V input signal sensitivity for full output power. values of gain in range of 28 to 40 (input sensitivity of 1 to 1.4V) can be set by changing the value of one or two resistors.
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Old 26th September 2012, 06:06 AM   #162
4real is offline 4real  Netherlands
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The CxD400 does only list one supply voltage range. Is that for both 200W and 400W versions?
And what about the gain of the Stereo module?
 
Old 27th September 2012, 02:59 AM   #163
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yes. same supply voltage for 200W on 8R or 400W on 4R. same gain for stereo module too.
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Old 27th September 2012, 04:16 PM   #164
4real is offline 4real  Netherlands
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Thanks Cristi, I think I'll go for the (4x) stereo modules with SMPS800R@60V PSU (2x)... I will probably be ordering in a few weeks, can't wait to compare with my current UcD400
 
Old 28th September 2012, 08:43 AM   #165
zog666 is offline zog666  Australia
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That CxD250-HP amp modules looks really nice, I enjoy my lower cost irs2092 modules from another vendor (powered by a Connex SMPS), these look even better.
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Old 28th October 2012, 08:52 AM   #166
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Hi Cristi, I've received my four CxD300-8R modules and my two smps500r power supplies - thanks. I plan to install two modules and one power supply in each of my active speakers. Do you recommend putting the electronics in a metal enclosure or can I just bolt them all to one of the wooden inside walls of each speaker?
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Old 3rd November 2012, 03:57 PM   #167
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Quote:
Originally Posted by OzzieAudio View Post
Hi Cristi, I've received my four CxD300-8R modules and my two smps500r power supplies - thanks. I plan to install two modules and one power supply in each of my active speakers. Do you recommend putting the electronics in a metal enclosure or can I just bolt them all to one of the wooden inside walls of each speaker?
I have about the same question. I'm not going to put the amp in a speaker, but in a wooden box. Is a metal shell required?

(have a SMPS800RE and a ta3020 kit in the mail, if that makes a difference.)

Thank you.
Duane
 
Old 6th November 2012, 07:57 PM   #168
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Dear fellows, I couldn't access the forum for more than one week. some major event will take part over here this week and next week and I thing it has to do with connection problems.

The modules can be installed in the speaker enclosure if there is enough airflow from the speakers to prevent overheating, and keep the heatsinks at a reasonably low temperature, below 75-80*C where the OT protection will trigger.
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Old 9th November 2012, 10:48 AM   #169
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Thanks Cristi,
Would a metal enclosure provide any useful screening from spurious signals or be beneficial for grounding purposes?
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Old 12th November 2012, 04:18 PM   #170
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In some cases yes. but mostly doesn't have any significant positive effect, especially if the modules are correctly wired and their position and distance is correct. basically the power supply must be installed such as the transformer to be furthers from the small signal stages and wires. also, the GND loops must be avoided and the signal wires must not be routed close or togheter with power wires, speaker output wires and any other wires.
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