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Essential Sound Products AVP-14: Oh, What A Difference An AC Cord Can Make

October 22, 2007
Essential Sound Products AVP-14 put to the test againE

Don't dismiss the Essential Sound Products AVP-14 as a simple power cord. Mike Griffin demonstrates how such a common component regarded as an accessory can have such varied implications on your sound monitoring. Stock power cords may even be linked to conditions like ear fatigue.

Check out the video and surprise yourself at how interested you become in AC cords.

Visit Essential Sound Products' official website here.

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but the microphone is

By: Anonymous Coward
but the microphone is pointed at a different speaker each time (???)
Mon, 2007-10-22 15:13

huh?

By: bholland
I have no clue what you are talking about. The mic was recording the monitors both times. It's hard to tell on the net because of bit rate, but there is a significant difference.
Mon, 2007-10-22 15:19

The speaker on your screen's

By: jirvinggiles
The speaker on your screen's right uses a stock power cord while the speaker on the left is using an Essential Sound Products cord - other than the cord, everything else in each speaker setup is exactly the same - notice the differences when Bill switches between speakers - I can definitely tell that the mid range is a lot more relaxed on the left speaker.
Mon, 2007-10-22 15:20

thank you

By: bholland
I haven't seen the coverage of this in a while, Josh, so I appreciate you being on top of that. that's totally what happened.
Mon, 2007-10-22 15:28

Everything is not 100% the

By: Anonymous Coward
Everything is not 100% the same. In the first case the mic is on the side of the tweeter, while on the second it is on the side of the woofer. The mic is hand held and therefore the relative positions and angles (to the monitors) are propably not identical, etc. I believe the results would be more credible if the microphone was on a stand pointing the same monitor while only the cable was swapped. To take it one step further, idealy you could borrow one of those cables and make a test by your own ;)
Mon, 2007-10-22 16:07

I'd love to do that (since I

By: jirvinggiles
I'd love to do that (since I wasn't in NY for that). Even with the factor of human microphone holding, it still sounded like a very considerable difference to me. I'd really like to hear it in person - maybe a Gearwire test can be arranged.
Mon, 2007-10-22 17:01

microphone stand

By: bholland
Well, bear in mind that this was at the end of a grueling weekend in New York and that we didn't have mic stands with us. This was a spontaneous, on the spot interview, and I really did not know what to expect. For one, it was a group demo, so we had to be unobtrusive for the presenter to do his job. Plus, there is no way in hell I was going to be walking around AES lugging a mic stand, let alone the fun we would have had at the airport. As a first hand observer, though, I can tell you that there is a marked difference in the cables. If you really want to see a planned demo of this, I might be able to visit them when I go back home to Detroit. Let me know, and maybe we can get the ball rolling.
Tue, 2007-10-23 11:50

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MIKE GRIFFIN: I'm going to play some rock, and we found -- What I found, because I'm new in the pro audio market, is that a lot of engineers complain about listening fatigue, okay? If you're mixing a lot of music and it's got a lot of high upper mid range, lower treble energy, that is irritating, the distortion. You'll hear what I'm talking about.

[MIKE GRIFFIN PLAYS A MONO TRACK THROUGH MACKIE MONITOR WITH STOCK POWER CORD]

You feel, I mean what's going on in the mid range? Okay. Sam epassag, ESP cord

[MIKE GRIFFIN PLAYS A MONO TRACK THROUGH MACKIE MONITOR WITH ESP POWER CORD]

Now, we didn't change any EQ or anything like that. It may sound like we turned the frequency down, but what you're hearing now is the lack of distortion that's being generated in that upper mid range area, okay? Now, we're going to go back and forth just, you know , make sure you can hear the difference, and then we're going to go to the upper frequencies.

[MIKE GRIFFIN PLAYS AND SWITCHES A MONO TRACK BETWEEN MACKIE MONITOR WITH STOCK CORD AND MONITOR WITH ESP POWER CORD]

As we're switching back and forth, can you pick up the difference now? Okay, are there any questions? Okay. I'm going to do one more, and this is going to be more of the upper frequencies. I'm going to play Natalie Cole.

[MIKE GRIFFIN PLAYS A MONO TRACK THROUGH MACKIE MONITOR WITH STOCK POWER CORD]

[MIKE GRIFFIN PLAYS A MONO TRACK THROUGH MACKIE MONITOR WITH ESP POWER CORD]

If you listened to the violins, I don't know if you noticed that. They sound more forward. With the stock cord, there's more emphasis. They actually have a more of a steely quality about them. It's more of a relaxed sound with the ESP cord and more depth and more air, more ambient information that you're able to hear because it's not being amassed by the distortion in the upper mid range area.

That's correct, and it's transients throughout the entire frequency range, and in addition, you know, we've had tested-- We've had tested independently with the shielding and with the design we have, we have about 6 dB broadband noise reduction of the cable itself, so in your front-end gear, you're going to have a lower noise floor, so you're going to get more signal-to-noise ratio as well. So between eliminating distortion and dropping the noise floor, you're going to get better recordings as well as we're listening to playback now.

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