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Post by valicu2000 on May 25, 2019 3:10:56 GMT -5
Hello, all!
I'm waiting for my XSP-1 Gen 2 to arrive and I've started reading the user manual more serious. Something caught my attention at page 20:
"Differential Reference™ Mode
The internal circuitry in the XSP-1 is designed to provide a balanced fully differential signal path from input to output. This is the default operating mode for the XSP-1 when balanced inputs and outputs are used, the Frequency Trims are disengaged (Direct mode), and bass management is disabled (Main Outputs are set to Full Range)."
I'm planning to use the following setup:
- fully ballanced DAC (Cambridge Audio Dacmagic Plus for the moment)
- Emotiva XSP-1 preamplifier
- Emotiva XPA-DR2 power amplifier
- Quadral Qube 12 subwoofer (with XLR input) - XLR balanced cables only for all the above
+ stereo speakers
It seems to me that the subwoofer will not fit in this setup ... or am I wrong? i don't mind having Main Outputs set to Full Range, but can I add the subwoofer and use the bass management for it directly in the XSP-1 ?
Thank you!
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Post by dsonyay on May 25, 2019 7:15:56 GMT -5
I dont think that applies to sub woofer outs.
I think they're talking about main speakers only.. not subs
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Post by AudioHTIT on May 25, 2019 7:55:02 GMT -5
...It seems to me that the subwoofer will not fit in this setup ... or am I wrong? i don't mind having Main Outputs set to Full Range, but can I add the subwoofer and use the bass management for it directly in the XSP-1 ? ... If I understand your question, you’re asking if the subwoofer outputs are still active , even though bass management is disabled? Meaning you could use the subs low pass filter for bass management? I haven’t had an XSP-1 for a while, but I think the answer is yes. If that’s not correct, a less elegant way would be to split the main (or use the RCAs) and run that to the subwoofer. |
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Post by valicu2000 on May 25, 2019 8:51:41 GMT -5
dsonyay : ... I've read something that the bass management part including subs is not pure differential reference ... AudioHTIT : RCA is a show stopper for me, that's why I chose to go full balanced (including the subwoofer). I guess I need the low pass filter to be enabled in the XSP-1.
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Post by valicu2000 on May 25, 2019 9:14:12 GMT -5
...It seems to me that the subwoofer will not fit in this setup ... or am I wrong? i don't mind having Main Outputs set to Full Range, but can I add the subwoofer and use the bass management for it directly in the XSP-1 ? ... If I understand your question, you’re asking if the subwoofer outputs are still active , even though bass management is disabled? Meaning you could use the subs low pass filter for bass management? I haven’t had an XSP-1 for a while, but I think the answer is yes. If that’s not correct, a less elegant way would be to split the main (or use the RCAs) and run that to the subwoofer. Going with XLR + RCA is a bummer ... I have this setup now.
From the DAC I run XLR to the power amp and the subwoofer is connected via RCA. There's a +6dB gain on XLR, this means that the bass from the subwoofer is so fainted that I can barely hear it. I need to run the Main Outputs and the sub from XLR out ...
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harsh
Minor Hero
Posts: 40 
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Post by harsh on May 25, 2019 14:40:25 GMT -5
If I'm not mistaken, the XSP-1 is running in fully differential mode (in direct mode with balanced inputs + outputs) - on main outputs if you don't use high pass filter (switch set to full range on main outputs) - and on subwoofer outputs if you don't use low pass filter (switch set to full range on subwoofer outputs) I run mine with both switches to full range, but you can use low pass filter on subwoofer outputs and still have the benefit of fully differential mode on main outputs  |
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Post by Gary Cook on May 25, 2019 14:51:38 GMT -5
I run the FL and FR full range as that maintains the fully balanced discrete circuitry all the way from the ERC-3, through the XSP-1 and into the XPA-1L’s. I have then blended in the subwoofer, using the XSP-1 low pass filter, as the FL and FR speakers roll off. It takes a bit of time to get that right, listening to a broad range of music. Some time later I did check it with REW, and I wasn’t that far off. From memory, it’s been a while, the subwoofer is set around 60 hz using a 12db slope, obviously that will vary depending on speakers and room,
Cheers
Gary
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Post by valicu2000 on May 26, 2019 11:33:28 GMT -5
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Post by AudioHTIT on May 26, 2019 13:28:34 GMT -5
The LFE input may bypass the subs crossover expecting you to send a filtered signal set by the surround processor. |
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