Voltage gain for RB-960BX

rhapsodee · 10th September 2009, 01:51 PM

Dear everyone,

I am thinking of bi-amping with a mix of power amps, the NAD 214 and the Rotel 960BX. As i plan to be using passive line level XOs, i do not have too much control in terms of gain matching.

The NAD 214 manual states a voltage gain of 28.3 (29dB), but i cannot find the gain for the Rotel 960BX. Is there a way to figure it out?

The link to the manual is there. Too large to attach, sorry.

http://www.rotel.com/content/manuals/rb960bx_eng.pdf

currentflow · 10th September 2009, 02:07 PM

Quote:

Originally Posted by rhapsodee

I am thinking of bi-amping with a mix of power amps, the NAD 214 and the Rotel 960BX. As i plan to be using passive line level XOs, i do not have too much control in terms of gain matching.

The NAD 214 manual states a voltage gain of 28.3 (29dB), but i cannot find the gain for the Rotel 960BX. Is there a way to figure it out?

Hi rhapsodee,

The manual shows an input sensitivity of 1V. For 60W into 8 ohms requires an output of 21.9V(rms). So the gain is x21.9, or 26.8dB.

Hope that helps.

Regards,
Steve

rhapsodee · 10th September 2009, 04:10 PM

Hi Steve,

Thanks for the reply! So that's what it means, 1V input for full rated power into 8 ohms.

That's good news, as i was planning to use the Rotel to drive the mid + tweeter, and the NAD for the woofer, which needs a bit more gain for the baffle step correction.

Thanks again!
Gavin

currentflow · 10th September 2009, 06:16 PM

Hi rhapsodee,

Yes, input sensitivity is normally quoted based on full power output and, if stated as a voltage, is normally V or mV (rms).

You should have an interesting setup when completed, though you would need to manually track the L-R balance adjustment across your two amplifiers, if required.

Regards,
Steve

rhapsodee · 21st September 2009, 04:53 PM

Hi Steve,

Yes, interesting, hopefully in a good way!

What do you mean by tracking the L-R balance between the two amps?

I have a rough plan for my passive XO, some details here..

8" NHT woofers for midbass

Appreciate any further comments!

Gavin

currentflow · 23rd September 2009, 08:58 AM

Quote:

Originally Posted by rhapsodee

What do you mean by tracking the L-R balance between the two amps?

I was wondering how you intend to control the volume and source selection in your setup.

Regards,
Steve

10th September 2009, 01:51 PM	#1
rhapsodee diyAudio Member Join Date: Jun 2005 Location: Singapore	Voltage gain for RB-960BX Dear everyone, I am thinking of bi-amping with a mix of power amps, the NAD 214 and the Rotel 960BX. As i plan to be using passive line level XOs, i do not have too much control in terms of gain matching. The NAD 214 manual states a voltage gain of 28.3 (29dB), but i cannot find the gain for the Rotel 960BX. Is there a way to figure it out? The link to the manual is there. Too large to attach, sorry. http://www.rotel.com/content/manuals/rb960bx_eng.pdf

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10th September 2009, 04:10 PM	#3
rhapsodee diyAudio Member Join Date: Jun 2005 Location: Singapore	Hi Steve, Thanks for the reply! So that's what it means, 1V input for full rated power into 8 ohms. That's good news, as i was planning to use the Rotel to drive the mid + tweeter, and the NAD for the woofer, which needs a bit more gain for the baffle step correction. Thanks again! Gavin

10th September 2009, 06:16 PM	#4
currentflow diyAudio Member Join Date: Apr 2008	Hi rhapsodee, Yes, input sensitivity is normally quoted based on full power output and, if stated as a voltage, is normally V or mV (rms). You should have an interesting setup when completed, though you would need to manually track the L-R balance adjustment across your two amplifiers, if required. Regards, Steve

21st September 2009, 04:53 PM	#5
rhapsodee diyAudio Member Join Date: Jun 2005 Location: Singapore	Hi Steve, Yes, interesting, hopefully in a good way! What do you mean by tracking the L-R balance between the two amps? I have a rough plan for my passive XO, some details here.. 8" NHT woofers for midbass Appreciate any further comments! Gavin

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