Yamaha CX-A5000 Surround Processor and MX-A5000 Amplifier Test Bench

Test Bench

Yamaha CX-A5000 Surround Processor

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The above chart shows the frequency response at the preamp outputs of the Dolby Digital decoder. Left (aqua): –0.01 dB @ 20 Hz, –0.35 dB @ 20 kHz. Center (green): –0.02 dB @ 20 Hz, –0.40 dB @ 20 kHz. Left surround (red): –0.02 dB @ 20 Hz, –0.36 dB at 20 kHz. LFE (purple): Normalized to the level @ 40 Hz: +0.15 dB @ 20 Hz, upper –3 dB @ 93 Hz, upper –6 dB @ 106 Hz.

Analog frequency response in Pure Direct mode:
–0.04 dB at 10 Hz
–0.01 dB at 20 Hz
–0.35 dB at 20 kHz
–1.96 dB at 50 kHz

Analog frequency response with signal processing:
–1.19 dB at 10 Hz
–0.37 dB at 20 Hz
–0.83 dB at 20 kHz
–23.94 dB at 50 kHz

Response from multichannel input to the output: –0.03 dB @ 10 Hz, –0.00 dB @ 20 Hz, –0.03 dB @ 20 kHz, –0.21 dB @ 50 kHz. Analog THD+N: less than 0.008% at 1 kHz with 100-millivolt input and volume control set to –3.5. Crosstalk with 100-mV input: –93.22 dB left to right, –94.46 dB right to left. Signal-to-noise ratio with “A” weighting: –121.37 dBrA.—MJP

The Yamaha CX-A5000 failed only one of the HD video processing tests, the tough (yet seldom seen in real-world material) 2:2 HD test. With the video processing engaged, the unit fails to pass the full chroma signal, but if the video processing is bypassed, the full chroma signal is present in the passthrough of the video signal.—DV

Yamaha MX-A5000 Amplifier

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This graph shows the MX-A5000’s left amplifier channel, with two channels driving 8-ohm loads. Measurements for THD+noise, crosstalk, signal-to-noise ratio, and analog/digital frequency response were all within expected performance parameters.

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COMMENTS
mbascu's picture

Informative Review Dave. Can you expand a little more on the differences between your 8801 and the Yamaha specifically in the room correction side. I find Audyssey inconsistent but great in handling subs. How about HDMI switching? Are there any lag or loss of audio for a few seconds?

David Vaughn's picture
Having the Audyssey Pro in the 8801 is a nice upgrade, but if you don't have your own kit you have to pay someone to utilize this aspect of the unit. You can take a lot more measurements and really get the audio to sound outstanding. The stock Audyssey versus YPAO is virtually a tie...both sounded good in my room where the Pro sounded great. As for the HSMI switching, both units take a second or two to lock onto the signal, which is par for the course unfortunately. I've yet to see any HDMI switching to be instantaneous.
PeterC's picture

Nice review David
I read your earlier review on the Marantz AV8801 and was pretty much decided that this was the unit that I would be purchasing.
Now after reading your review of the Cx-5000 I wonder if this is the right move. Are you saying in your review that you would not have purchased the AV8801 had you seen the CX-5000?
I would be interested to know more about how you would compare the two units.

David Vaughn's picture
If I had seen the Yamaha first I would have had no hesitation to buy it. I was in the market for a pre/pro and it met or exceeded every expectation I had. BUT, the exact same can be said for the Marantz. I could own either one and be perfectly happy with them. It just so happens I already owned the Marantz and didn't feel the need to buy a new unit since they were pretty much equal. I would go with the one that you could get the best price on because you really can't go wrong with either one.
MichiganMike's picture

The Yamaha CX-A5000 replaced a Parasound C2 controller in my home theater. Like David Vaughn, I found the Yamaha to be a great match with my Parasound amps (A21 and A51) in a 7.1 system using balanced interconnects. The CX=A5000 has a lower residual noise level than my Parasound C2 and many updated features, such as HDMI inputs, YPAO, Airplay, Sirius internet, etc. I enjoy the ability to control the CX-A5000 with my iPod. The sound quality available from Airplay is surprisingly good. The sound quality from DVDs and Blu-ray in my opinion is an improvement over my Parasound C2 controller, which already was very good. YPAO functions well in my room.

tzalo's picture

Where are the complete measurements for the MX-A5000 amplifier?

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