Mods please move if this is the wrong area.
Looking into using REW for TS and Impedance measurements.
Question - I have a Behringer UMC202HD which will do the job but do I use the headphone output or the rear RCA outputs to feed the sound signal to the speaker?
Looking into using REW for TS and Impedance measurements.
Question - I have a Behringer UMC202HD which will do the job but do I use the headphone output or the rear RCA outputs to feed the sound signal to the speaker?
allenB, thanks for replying, I have a Rotel RMB1066 which should do the job I think, is this better than running from the (assumed) 2v max rca outputs (which are also variable) ? Suspect the headphone output is much less but can’t find specs. How would you connect up the power amp, not seen any diagrams for this type of setup.
RMB-1066 | Rotel
RMB-1066 | Rotel
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Can you connect the soundcard outputs to the power amplifier, eg the RCAs (I feel I might have missed something).
I have connected it directly to a pair of active studio monitors via the rear outputs before so no reason why not. Slight amendment the rear outputs are TRS which I use RCA adaptors with.
The UMC202HD has -
Two XLR microphone inputs which have gain control and pads plus TRS (RCA with adaptors)
Two TRS rear outputs which have volume control
1/4” headphone socket with volume control
Picture of panels added.
I also have a UCA202 which is cheaper and simpler and has a “how to” described on AVSForum but without the power amp, just using its headphone socket.
The UMC202HD has -
Two XLR microphone inputs which have gain control and pads plus TRS (RCA with adaptors)
Two TRS rear outputs which have volume control
1/4” headphone socket with volume control
Picture of panels added.
I also have a UCA202 which is cheaper and simpler and has a “how to” described on AVSForum but without the power amp, just using its headphone socket.
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I believe the headphone output could be used, but is it a known quantity? The amp would be.. but if the question of the headphone output has been covered, then go ahead. Regarding your original question I'd avoid using the line level outs on their own for general purpose testing. Again, once you define their properties you might, but this is not necessary when you simply have a power amplifier available.
Many thanks again, I’ll give it a go and make up some leads for the headphone jack. I have an old 8” woofer from a Mackie HR824 (Vifa I think, poly cone) to do some tests on to check it works out.
I use the headphone output for impedance measurements (i.e. also for determining the TSP of a driver). My interface should be quite similar to the Behringer unit: it's a Cakewalk UA-25EX, which is also USB-powered.
I would just try it out. However, the reference resistor should be more like 100 ohms, not lower, as would be the case, for example, when using an additional measuring amplifier.
I can't complain about the quality of the measurements:
(Monacor SP-10A/302PA in about 20 liters BR)
Best regards,
Azrael
I would just try it out. However, the reference resistor should be more like 100 ohms, not lower, as would be the case, for example, when using an additional measuring amplifier.
I can't complain about the quality of the measurements:
(Monacor SP-10A/302PA in about 20 liters BR)
Best regards,
Azrael
