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twotoedsloth



Joined: 26/01/08
Posts: 613
Headphone amp
      #1052979 - 17/06/13 08:27 PM
I guess I need a new headphone amp. I was recording a pair of pianos today in a concert hall, and the producer kept complaining that his headphones were clipping. I had about 10db of headroom, and my headphones were not clipping at all. So that must mean that my headphone amp was distorting the sound. For what it's worth, I was using AKG K240 mk 2 cans, and he was using Fostex T40(s).

The headphone amp is a Presonus HP4.

Any suggestions?

Thanks,

Peter


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Bob Bickerton
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Joined: 20/12/02
Posts: 3147
Loc: Nelson, New Zealand
Re: Headphone amp new [Re: twotoedsloth]
      #1052986 - 17/06/13 08:48 PM
I bought a Lehman Studio Cube Here for live tracking and I'm very pleased. Use with HD650s or HD25s depending on how isolated I am from the action.

Bob

--------------------
www.bickerton.co.nz


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twotoedsloth



Joined: 26/01/08
Posts: 613
Re: Headphone amp new [Re: twotoedsloth]
      #1052994 - 17/06/13 09:19 PM
Thanks Bob.

That looks great, but I think I need to have 4 headphone outs, I need three (Me, composer, producer) all the time. Sorry, I should have said that in the first message.

Cheers,

Peter


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Bob Bickerton
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Joined: 20/12/02
Posts: 3147
Loc: Nelson, New Zealand
Re: Headphone amp new [Re: twotoedsloth]
      #1053002 - 17/06/13 10:18 PM
You could buy two

I also have the Rane 4 channel in the studio. Seems OK but then I never get to use it!

Bob

--------------------
www.bickerton.co.nz


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twotoedsloth



Joined: 26/01/08
Posts: 613
Re: Headphone amp new [Re: twotoedsloth]
      #1053007 - 17/06/13 10:54 PM
Why didn't I think of that? That's exactly what I need... another box to carry around!

Seriously now.. does anyone have any experience with the Aphex Headpod?


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twotoedsloth



Joined: 26/01/08
Posts: 613
Re: Headphone amp new [Re: twotoedsloth]
      #1053170 - 18/06/13 08:34 PM
Bob,

I hope you're not annoyed with my response, I was just kidding.

Peter


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Bob Bickerton
active member


Joined: 20/12/02
Posts: 3147
Loc: Nelson, New Zealand
Re: Headphone amp new [Re: twotoedsloth]
      #1053194 - 19/06/13 08:25 AM
Quote twotoedsloth:

Bob,

I hope you're not annoyed with my response, I was just kidding.

Peter




Not at all, so was I, two would be seriously over the top! Can't help with the Aphex sorry.

Bob

--------------------
www.bickerton.co.nz


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Exalted Wombat



Joined: 06/02/10
Posts: 5831
Re: Headphone amp new [Re: twotoedsloth]
      #1053198 - 19/06/13 09:07 AM
Quote twotoedsloth:

I guess I need a new headphone amp. I was recording a pair of pianos today in a concert hall, and the producer kept complaining that his headphones were clipping. I had about 10db of headroom, and my headphones were not clipping at all. So that must mean that my headphone amp was distorting the sound. For what it's worth, I was using AKG K240 mk 2 cans, and he was using Fostex T40(s).

The headphone amp is a Presonus HP4.

Any suggestions?





Your evidence tells us that he doesn't like the sound in his cans. It doesn't tell us what's wrong. Does he have a volume control? Maybe it's too high. Maybe you're over-driving the headphone amp. Maybe his cans are broken. Maybe he just doesn't like the sound of those cans.

Edited by Hugh Robjohns (19/06/13 09:18 AM)


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Hugh RobjohnsAdministrator
SOS Technical Editor


Joined: 25/07/03
Posts: 22064
Loc: Worcestershire
Re: Headphone amp new [Re: Exalted Wombat]
      #1053205 - 19/06/13 09:27 AM
I agree. Not enough evidence to warrant buying a new headphone amp. Both headphones have similar impedances, so that's not likely to be the issue. And since you think your headphones were okay, that suggests either the producers headphones were broken, or he had his volume control set too high and his headphone amp was overloading.

Reading between the lines, the Presonus sounds like it would prefer higher impedance phones in the 150-600 ohm region... but if you are happy with the sound quality and level in the K240s, then surely it would make more sense to buy a second pair of K240s and let the producer use those.

Quality headphone amps with plenty of welly aren't cheap.

H

--------------------
Technical Editor, Sound On Sound


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James PerrettModerator



Joined: 10/09/01
Posts: 10826
Loc: The wilds of Hampshire
Re: Headphone amp new [Re: Hugh Robjohns]
      #1053207 - 19/06/13 09:51 AM
Quote Hugh Robjohns:


Quality headphone amps with plenty of welly aren't cheap.





That's why I use a standard hifi amp for headphones. Some singers have their headphones so loud that you get feedback when they take them off.

James.

--------------------
JRP Music - Audio Mastering and Restoration.
http://www.jrpmusic.net


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Andi



Joined: 02/09/04
Posts: 1203
Loc: Berkshire, UK
Re: Headphone amp new [Re: James Perrett]
      #1053261 - 19/06/13 02:10 PM
Quote James Perrett:

Quote Hugh Robjohns:


Quality headphone amps with plenty of welly aren't cheap.





That's why I use a standard hifi amp for headphones. Some singers have their headphones so loud that you get feedback when they take them off.

James.




Please tell me that's feedback as in "strewth guv, that was blinkin' loud in there!"

--------------------
Andi, www.thedustbowlaudio.com Mixing, Mastering, Audio Editing (and articles) at The Dustbowl Audio


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Exalted Wombat



Joined: 06/02/10
Posts: 5831
Re: Headphone amp new [Re: Exalted Wombat]
      #1053299 - 19/06/13 05:49 PM
Quote Exalted Wombat:

Quote twotoedsloth:

I guess I need a new headphone amp. I was recording a pair of pianos today in a concert hall, and the producer kept complaining that his headphones were clipping. I had about 10db of headroom, and my headphones were not clipping at all. So that must mean that my headphone amp was distorting the sound. For what it's worth, I was using AKG K240 mk 2 cans, and he was using Fostex T40(s).

The headphone amp is a Presonus HP4.

Any suggestions?





Your evidence tells us that he doesn't like the sound in his cans. It doesn't tell us what's wrong. Does he have a volume control? Maybe it's too high. Maybe you're over-driving the headphone amp. Maybe his cans are broken. Maybe he just doesn't like the sound of those cans.




Out of interest, why did Hugh need to edit my post?


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twotoedsloth



Joined: 26/01/08
Posts: 613
Re: Headphone amp new [Re: twotoedsloth]
      #1053310 - 19/06/13 06:31 PM
Thanks for all of your advice.

The situation was exacerbated because the producer wouldn't let me listen to his phones, citing bacteria (!).

I brought the recordings back to the studio, and there was no distortion or clipping that I could hear, and as I said, I had about 10db of headroom. In the studio we use an RME Fireface UFX and Genelec monitors.

He must have "turned them up to 11" since that was the only way I could get the distortion I think he was describing.

I'll bring the amp to a music shop and see if they'll let me audition a pair of Fostex phones, to see if I can replicate the producer's experience.

Much appreciated Gentlemen!


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Bob Bickerton
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Joined: 20/12/02
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Re: Headphone amp new [Re: twotoedsloth]
      #1053320 - 19/06/13 08:11 PM
Quote twotoedsloth:

The situation was exacerbated because the producer wouldn't let me listen to his phones, citing bacteria (!).




His or yours?

Bob

--------------------
www.bickerton.co.nz


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Hugh RobjohnsAdministrator
SOS Technical Editor


Joined: 25/07/03
Posts: 22064
Loc: Worcestershire
Re: Headphone amp new [Re: Exalted Wombat]
      #1053324 - 19/06/13 08:34 PM
Quote Exalted Wombat:

Out of interest, why did Hugh need to edit my post?




Both the original quote and your answer were contained within a single quote, which made it very confusing. You had used a long chain of angle brackets to separate the two for some reason. So In short, I corrected the quoting formatting.

H

--------------------
Technical Editor, Sound On Sound


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Exalted Wombat



Joined: 06/02/10
Posts: 5831
Re: Headphone amp new [Re: Hugh Robjohns]
      #1053326 - 19/06/13 08:50 PM
Oh right. My brain probably thought I was replying to an email. It WAS rather early in the morning! Thanks for clearing it up.


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twotoedsloth



Joined: 26/01/08
Posts: 613
Re: Headphone amp new [Re: twotoedsloth]
      #1053329 - 19/06/13 09:06 PM
Censorship!!!


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James PerrettModerator



Joined: 10/09/01
Posts: 10826
Loc: The wilds of Hampshire
Re: Headphone amp new [Re: twotoedsloth]
      #1053407 - 20/06/13 11:48 AM
Quote twotoedsloth:


I'll bring the amp to a music shop and see if they'll let me audition a pair of Fostex phones, to see if I can replicate the producer's experience.





My experience of Fostex phones was that they didn't stand up very well to studio life and they simply didn't go loud enough for some people.

James.

--------------------
JRP Music - Audio Mastering and Restoration.
http://www.jrpmusic.net


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twotoedsloth



Joined: 26/01/08
Posts: 613
Re: Headphone amp new [Re: twotoedsloth]
      #1053494 - 20/06/13 07:52 PM
Okay, I tried the Presonus headphone amp with a brand spanking new pair of Fostex T40 mk2 headphones.

I was able to make it distort at relatively low volumes. So the easy solution is to tell this guy when I work for him next that he needs new phones... might be a tough sell.

Thanks everyone,

Peter


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James PerrettModerator



Joined: 10/09/01
Posts: 10826
Loc: The wilds of Hampshire
Re: Headphone amp new [Re: twotoedsloth]
      #1053550 - 21/06/13 09:20 AM
Quote twotoedsloth:

So the easy solution is to tell this guy when I work for him next that he needs new phones... might be a tough sell.





Get yourself an old hifi amp from Freecycle or Gumtree then.

James.

--------------------
JRP Music - Audio Mastering and Restoration.
http://www.jrpmusic.net


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twotoedsloth



Joined: 26/01/08
Posts: 613
Re: Headphone amp new [Re: James Perrett]
      #1053842 - 23/06/13 07:55 PM
Are Freecycle and Gumtree like eBay?


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