Introducing the MCP-18 Audiophile Multichannel Preamp

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John Casler

Re: Mr. Casler, what's the preamp's Voltage gain?
« Reply #100 on: 11 Dec 2014, 03:10 am »
I don't see that in the Specs table.

•   Maximum Output:10V RMS at L/R, 4V RMS at others

jeffreybehr

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Re: Introducing the MCP-18 Audiophile Multichannel Preamp
« Reply #101 on: 11 Dec 2014, 07:35 am »
Yes, I see the maximum output in Volts, but that's sure not the Voltage gain. 

Something else  from the amazingly brief user manual--Input impedance, '47k ohm' (plenty OK), and then Output impedance, '47k ohm'.  Really?  if so, this preamp would sound horrible trying to drive a poweramp with a, say, 10K-Ohm input impedance.   Does anyone who knows anything read these things before they're published?  What is the output impedance?  I'm hoping for something closer to 47 Ohms.

John Casler

Re: Introducing the MCP-18 Audiophile Multichannel Preamp
« Reply #102 on: 11 Dec 2014, 08:30 am »
Yes, I see the maximum output in Volts, but that's sure not the Voltage gain. 

Something else  from the amazingly brief user manual--Input impedance, '47k ohm' (plenty OK), and then Output impedance, '47k ohm'.  Really?  if so, this preamp would sound horrible trying to drive a poweramp with a, say, 10K-Ohm input impedance.   Does anyone who knows anything read these things before they're published?  What is the output impedance?  I'm hoping for something closer to 47 Ohms.

•   5 RCA (including Home Theater bypass input
•   Outputs: RCA and XLR (XLR output is balanced)
•   THD+N :0.002% at 1kHz
•   S/N Ratio:105dB
•   Frequency Response:10 to 100kHz 
   -0.06dB/-0.04dB 20-20kHz; -0.7dB 100kHz
•   Maximum Output:10V RMS at L/R, 4V RMS at others
•   Input Impedance:= 47K ohm
•   Output Impedance:= 5 ohm

jeffreybehr

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Re: Introducing the MCP-18 Audiophile Multichannel Preamp
« Reply #103 on: 11 Dec 2014, 11:34 pm »
•   5 RCA (including Home Theater bypass input
•   Outputs: RCA and XLR (XLR output is balanced)
•   THD+N :0.002% at 1kHz
•   S/N Ratio:105dB
•   Frequency Response:10 to 100kHz 
   -0.06dB/-0.04dB 20-20kHz; -0.7dB 100kHz
•   Maximum Output:10V RMS at L/R, 4V RMS at others
•   Input Impedance:= 47K ohm
•   Output Impedance:= 5 ohm

TY.
5 Ohms is great; where did you get this set of specs?

And Voltage gain is still missing; I guess I'll have to measure it, since Nuforce is apparently too stupid to state it.

And they don't specify how they measure SN ratio--unweighted, C-weighted, A-weighted.  Oh well.

John Casler

Re: Introducing the MCP-18 Audiophile Multichannel Preamp
« Reply #104 on: 12 Dec 2014, 02:14 am »
TY.
5 Ohms is great; where did you get this set of specs?

And Voltage gain is still missing; I guess I'll have to measure it, since Nuforce is apparently too stupid to state it.

And they don't specify how they measure SN ratio--unweighted, C-weighted, A-weighted.  Oh well.

These specs come from Casey.

I will post him and clarify your interest in the "voltage gain" and S/N method.

DWG

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Re: Introducing the MCP-18 Audiophile Multichannel Preamp
« Reply #105 on: 19 Jan 2015, 12:31 am »
Just bought one of these to replace my HT receiver.  Now I need an amp.  Does anybody have any experience with the sister amp (MCA-18)?