VERY INTERESTING!!: Parents blind test 3 CD Players (NOT a DBT Discussion)

Sep 12, 2007 at 2:39 PM Thread Starter Post #1 of 27

cyanbomb

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I'm highly aware of the ban on DBT discussion, so I'm not here to discuss any of that; rather, I'd like to share the result of my experiment, conducted this very evening after dinner.

Test Subjects: My parents.
Both in their early 50's. Dad is an audiophile, who got me started with Head-fi and component hi-fi. Mum listens to tons of music, but only casually. No knowledge of hi-fi whatsoever.

Primary CD Players Tested:
1) Musical Fidelity A5 CD Player
2) Cambridge Audio Azur 640 CD Player
3) Panasonic SL-CT720 PCDP
Of course, these are listed in order of price, the Musical Fidelity being some 8-fold more expensive than the Cambridge, and the Panasonic costing under US$100.


Supporting Test Equipment:
In order from source to speakers:
1) Custom terminated Supra EFF-I Interconnects, QED RCA connectors
For the Panasonic PCDP: Van Den Hul "The Patch Bay" 3.5mm to RCA interconnect.
2) Parasound P/LD-1500 Line Drive Amplifier (Preamp)
3) Custom terminated Supra EFF-I Interconnects, QED Balanced connectors
4) 2 x Parasound HCA-2200 Ultra High Current Monoblocks. Bridged.
5) Custom terminated Supra Ply 3.4/S Loudspeaker Cables
6) Vandersteen Model 3 Loudspeakers (3-way, Floorstanding)

Test Material:
Track 1) Vittorio - Roma Sogna
Type: Male vocals, solo, with climatic orchestral backing during chorus.

Track 2) Diana Krall - Popsicle Toes
Type: Female Jazz vocals, fully accompanied by piano and band.

Track 3) Jennifer Warnes - Way Down Deep
Type: Female Folk vocals, famous for testing bass response due to sub 30Hz frequencies available via drum accompaniment throughout the track.

If you're wondering why there aren't more tracks, it's because parents have limited patience when it comes to their childrens' antics, and I didn't want test the theory.
icon10.gif


Test Methodology:
I generated a control sheet for myself, listing the CDs, and players like this:

Players Tested:
Musical Fidelity A5 (MF)
Cambridge Audio Azur 640 (CA)
Panasonic SL-CT720 (PS)


CD One – Vittorio

Player 1: PS

Player 2: CA

Player 3: MF


CD Two – Diana Krall

Player 1: CA

Player 2: MF

Player 3: PS


CD Three – Jennifer Warnes

Player 1: MF

Player 2: CA

Player 3: PS


Of course, the subjects' sheets did not include the source names.

I proceeded to play each track according to the order in the control sheet.

The 3 sources were hidden behind a massive blanket veil I set up using 2 tripods and a 3-layered blanket, so nobody could see which source I was selecting.

Additionally, I prepared an additional MP3 player, a track on repeat, and 2 headphones which I made them wear before and after each round of testing, so they couldn't differentiate between the sounds of the CD trays opening and closing (the Musical Fidelity's mechanism is distinctively loud).


Test Results:
(Control setup in black, Father's answers in blue, Mother's answers in magenta.

Note: My mother doesn't know anything about the players, so she listed them in terms of which sounded BEST, 2nd, and 3rd.

Players Tested:
Musical Fidelity A5 (MF)
Cambridge Audio Azur 640 (CA)
Panasonic SL-CT720 (PS)


CD One – Vittorio

Player 1: PS PS Best

Player 2: CA MF 2nd

Player 3: MF CA 3rd


CD Two – Diana Krall

Player 1: CA PS 2nd

Player 2: MF CA 3rd

Player 3: PS MF Best


CD Three – Jennifer Warnes

Player 1: MF PS 3rd

Player 2: CA MF 2nd

Player 3: PS CA Best


Conclusions:
My father's answers were almost all wrong, except for the very first answer, where he correctly guess the Panasonic PDCP. It actually surprised me.

My mother's answers, on the other hand, were stunning. She consistently guessed every single player correctly.

Perhaps simply listening to the most enjoyable sound, without being too overly analytical, is the secret to accuracy in listening tests? What do you guys think?
 
Sep 12, 2007 at 2:57 PM Post #4 of 27
Quote:

Originally Posted by cyanbomb /img/forum/go_quote.gif
Perhaps simply listening to the most enjoyable sound, without being too overly analytical, is the secret to accuracy in listening tests? What do you guys think?


Thats how I always do it... what puts a smile on my face.

Its interesting how your mother chose the portable panny as her favorite source. All my panasonic players have a warm yet distant and at times congested sound, compared to any of my other sources. it works well with some phones, and not so great with others. I wonder if her result would be different if you used a different headphone.

Blind tests should be discussed in an open forum
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Sep 12, 2007 at 2:57 PM Post #5 of 27
So you're mother consistently felt the Panasonic portable CD player was the best sounding and your father's answers were consistently wrong? I sense the winds of change in your family's hi-fi setup.
tongue.gif
 
Sep 12, 2007 at 3:02 PM Post #6 of 27
Quote:

Originally Posted by cyanbomb /img/forum/go_quote.gif
I'm highly aware of the ban on DBT discussion, so I'm not here to discuss any of that; rather, I'd like to share the result of my experiment, conducted this very evening after dinner.

Test Subjects: My parents.
Both in their early 50's. Dad is an audiophile, who got me started with Head-fi and component hi-fi. Mum listens to tons of music, but only casually. No knowledge of hi-fi whatsoever.

Primary CD Players Tested:
1) Musical Fidelity A5 CD Player
2) Cambridge Audio Azur 640 CD Player
3) Panasonic SL-CT720 PCDP
Of course, these are listed in order of price, the Musical Fidelity being some 8-fold more expensive than the Cambridge, and the Panasonic costing under US$100.


Supporting Test Equipment:
In order from source to speakers:
1) Custom terminated Supra EFF-I Interconnects, QED RCA connectors
For the Panasonic PCDP: Van Den Hul "The Patch Bay" 3.5mm to RCA interconnect.
2) Parasound P/LD-1500 Line Drive Amplifier (Preamp)
3) Custom terminated Supra EFF-I Interconnects, QED Balanced connectors
4) 2 x Parasound HCA-2200 Ultra High Current Monoblocks. Bridged.
5) Custom terminated Supra Ply 3.4/S Loudspeaker Cables
6) Vandersteen Model 3 Loudspeakers (3-way, Floorstanding)

Test Material:
Track 1) Vittorio - Roma Sogna
Type: Male vocals, solo, with climatic orchestral backing during chorus.

Track 2) Diana Krall - Popsicle Toes
Type: Female Jazz vocals, fully accompanied by piano and band.

Track 3) Jennifer Warnes - Way Down Deep
Type: Female Folk vocals, famous for testing bass response due to sub 30Hz frequencies available via drum accompaniment throughout the track.

If you're wondering why there aren't more tracks, it's because parents have limited patience when it comes to their childrens' antics, and I didn't want test the theory.
icon10.gif


Test Methodology:
I generated a control sheet for myself, listing the CDs, and players like this:

Players Tested:
Musical Fidelity A5 (MF)
Cambridge Audio Azur 640 (CA)
Panasonic SL-CT720 (PS)


CD One – Vittorio

Player 1: PS

Player 2: CA

Player 3: MF


CD Two – Diana Krall

Player 1: CA

Player 2: MF

Player 3: PS


CD Three – Jennifer Warnes

Player 1: MF

Player 2: CA

Player 3: PS


Of course, the subjects' sheets did not include the source names.

I proceeded to play each track according to the order in the control sheet.

The 3 sources were hidden behind a massive blanket veil I set up using 2 tripods and a 3-layered blanket, so nobody could see which source I was selecting.

Additionally, I prepared an additional MP3 player, a track on repeat, and 2 headphones which I made them wear before and after each round of testing, so they couldn't differentiate between the sounds of the CD trays opening and closing (the Musical Fidelity's mechanism is distinctively loud).


Test Results:
(Control setup in black, Father's answers in blue, Mother's answers in magenta.

Note: My mother doesn't know anything about the players, so she listed them in terms of which sounded BEST, 2nd, and 3rd.

Players Tested:
Musical Fidelity A5 (MF)
Cambridge Audio Azur 640 (CA)
Panasonic SL-CT720 (PS)


CD One – Vittorio

Player 1: PS PS Best

Player 2: CA MF 2nd

Player 3: MF CA 3rd


CD Two – Diana Krall

Player 1: CA PS 2nd

Player 2: MF CA 3rd

Player 3: PS MF Best


CD Three – Jennifer Warnes

Player 1: MF PS 3rd

Player 2: CA MF 2nd

Player 3: PS CA Best


Conclusions:
My father's answers were almost all wrong, except for the very first answer, where he correctly guess the Panasonic PDCP. It actually surprised me.

My mother's answers, on the other hand, were stunning. She consistently guessed every single player correctly.

Perhaps simply listening to the most enjoyable sound, without being too overly analytical, is the secret to accuracy in listening tests? What do you guys think?




it is a medical given that woman have better hearing and can see more colours, especially red.
 
Sep 12, 2007 at 3:04 PM Post #7 of 27
Quote:

Originally Posted by elnero /img/forum/go_quote.gif
So you're mother consistently felt the Panasonic portable CD player was the best sounding and your father's answers were consistently wrong? I sense the winds of change in your family's hi-fi setup.
tongue.gif



rofl! That amused the heck out of me too. I think kramer5150's comment that the Panny is warm makes a point by itself - I think that it's a "consumer-friendly" sound, that maybe my non-audiophile mother had grown accustomed to over the years of listening to relatively low-fi.

That kind of scares me when I think about the number of everyday people who actually think that iBuds sound amazing.
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Sep 12, 2007 at 5:42 PM Post #8 of 27
Yes, women definitely have better hearing on average, especially as they age. Audiophilia appeals mainly to men because of the gear, not because of our hearing.

I'm using a portable Panny as my primary source.
 
Sep 12, 2007 at 5:54 PM Post #9 of 27
Quote:

Originally Posted by cyanbomb /img/forum/go_quote.gif
My mother's answers, on the other hand, were stunning. She consistently guessed every single player correctly.


How are you reaching that conclusion when she didn't actually identify any of the players?
 
Sep 12, 2007 at 7:39 PM Post #11 of 27
Quote:

Originally Posted by fierce_freak /img/forum/go_quote.gif
I think he's saying that her favorite on every track was always the panny, her second favorite on every track was the CA, and her third favorite was the MF on every track.


Yup. Exactly.
 
Sep 12, 2007 at 7:51 PM Post #12 of 27
Quote:

Originally Posted by Spareribs /img/forum/go_quote.gif
women have better tuned ears and this is why they think that their audiophile husbands are silly.


x2. my wife said she heard all the details on the sony PCDP; and my spkr rig did not sound any different (extract any more detail) than what she had already heard with the sony; although she did say some details are a little clearer with my system. Hemm..that's a lot $$$$ for '[a] little clearer'
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And the most shocking of all: I don't think, my mere conjecture, my wife can be 'fooled' by audio illusion. ...hehe..sucks to be a woman I guess
wink.gif
 
Sep 12, 2007 at 9:35 PM Post #15 of 27
Quote:

Originally Posted by Roam /img/forum/go_quote.gif
Now you know why all my audio gear had to meet with my daughter's approval.


Roam, as an engeneer i would have thought you would at least make your own amps!
 

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