Head-Fi.org › Forums › Equipment Forums › Headphones (full-size) › The Beyerdynamic DT880 Appreciation / Discussion thread
New Posts  All Forums:Forum Nav:

The Beyerdynamic DT880 Appreciation / Discussion thread - Page 277

post #4141 of 7043
Quote:
Originally Posted by TrollDragon View Post

If the driver is still working and all you did was make a hole in the fibre, just put a small piece of Transpore over the holes.

http://www.nexcare.com.au/wps/portal/3M/en_AU/APACNexcare/Nexcare/Products/?PC_7_U00M8B1A08FQE0IT5BPKEKI833000000_nid=7H099Z0CDJgsBT1ZQ410CTglN8BWN8LRQCbl

beerchug.gif

 

That's definitely a good idea if it was just for me, but I am just worried about channel matching and the effect on the resale value of this unit...

post #4142 of 7043
I honestly somehow sceptical when it comes to cables once they are decent ones. I new to heapdhones and always be speaker guy. Once I had descent cables the most impact on soud was source/ dac and amp. Expensive cables and balanced outputs are good and make more sense, money wise, when all the other equipement is top and complete. Modyfing headphones is like Modyfing speakers, once u do it then then usually they end up on ebay next moth. And cables are only as good as rest of your gear. You might want to check anti cables or dnm reson.
post #4143 of 7043
Quote:
Originally Posted by MinedSafe View Post

I honestly somehow sceptical when it comes to cables once they are decent ones. I new to heapdhones and always be speaker guy. Once I had descent cables the most impact on soud was source/ dac and amp. Expensive cables and balanced outputs are good and make more sense, money wise, when all the other equipement is top and complete. Modyfing headphones is like Modyfing speakers, once u do it then then usually they end up on ebay next moth. And cables are only as good as rest of your gear. You might want to check anti cables or dnm reson.

 

May as well start screaming at Tube Rollers and Op Amp Rollers while you are at it! Seriously, these discussions never go anywhere constructive! Peace out.
post #4144 of 7043
Quote:
Originally Posted by Chris J View Post

 

May as well start screaming at Tube Rollers and Op Amp Rollers while you are at it! Seriously, these discussions never go anywhere constructive! Peace out.

xD indeed

 

Eitherway. As far as I am concerned, that Dt 880 is priced about the same as other STOCK used dt 880s on head fi right now. This one seller is selling his Dt 880s with an essitally free cable upgrade! I could see if it was $300 bucks. Might as well save a few dollars and buy a stock used BUT this is a recabled FOR the price of Stock Used :O and as some one planning to get a Balanced set up at some point, it's a super win win for me atm! 

post #4145 of 7043

Can someone double check my approximate calculations to see if the C421 would drive the DT 880 600 ohm version?
 

C421: 28 mw at 600 ohms (Based on C5 measurements, I believe they have the same output)

O2: 77mw at 600 ohms

Magni: 130 mw at 600 ohms

 

You will need 1mw to drive the DT 880 600 ohm to 96 db. (10 * the sound pressure of listening level, 85 db)

 

Average listening level should be 80 - 85 db in order to prevent long term damage to the ears.

 

All of them will push the DT 880 600 ohms to over 110 db, and your ears will bleed. Around 20 mw needed to reach 109 db, so the C421 will drive the DT 880s?

post #4146 of 7043
Quote:
Originally Posted by asdafaasda View Post

You will need 1mw to drive the DT 880 600 ohm to 96 db. (10 * the sound pressure of listening level, 85 db)

Yes, I would like to understand this as well.

 

Somehow I just fail see how 1mW will produce any reasonable listening level at all. What am I missing here?

 

I plug my DT880 Pro's into the Colorfly C3 with it's 12mW output and even with the volume cranked on the C3 the headphones are no where near a decent listening level.

 

The specs in the data sheet of the PCM1770 (C3 DAC chip) state 13 mW rms into a 16Ω load... I'll have to do some math here and see what it is into 250Ω.

post #4147 of 7043
Quote:
Originally Posted by TrollDragon View Post

Quote:
Originally Posted by asdafaasda View Post

You will need 1mw to drive the DT 880 600 ohm to 96 db. (10 * the sound pressure of listening level, 85 db)

Yes, I would like to understand this as well.

 

Somehow I just fail see how 1mW will produce any reasonable listening level at all. What am I missing here?

 

I plug my DT880 Pro's into the Colorfly C3 with it's 12mW output and even with the volume cranked on the C3 the headphones are no where near a decent listening level.

 

The specs in the data sheet of the PCM1770 (C3 DAC chip) state 13 mW rms into a 16Ω load... I'll have to do some math here and see what it is into 250Ω.

I think I can answer this, 13mw at 16 ohms would not even translate to 1 mw at 250 ohms assuming current /2 for every *2 increase in the impedance of the load. 

post #4148 of 7043

Thanks asdafaasda.

I was just looking at the power info on the site of he who cannot be named, and it's the logarithmic math that I don't quite understand. biggrin.gif

So the question I have now is:

 

If the DT880 Pro 250Ω produce 96 dB with 1mW from beyerdynamic specifications and the LD MK IV puts out 500 mW into 300/600Ω, then why is the volume control required to be almost 1/3 for a normal listening level?

 

Pardon my noobness... biggrin.gif


Edited by TrollDragon - 8/22/13 at 9:11pm
post #4149 of 7043
I think I've come to the conclusion that... I can't sell my DT880s. I'm keeping both the T90 and the DT880s. Going from T90 to the DT880s, the immediate thing is the flattened soundstage and veiled imaging but it's a smoother listening experience. They are my HD600s, smooth and laidback (compared to the T90s) but yet still has that treble sparkle that I love. I still might sell/trade them for a set of 880/250s so I can run them from a portable amp better but I don't know... I'll have to wait and see. biggrin.gif So yeah.. still love my 880s.
post #4150 of 7043
Quote:
Originally Posted by TrollDragon View Post

Thanks asdafaasda.

I was just looking at the power info on the site of he who cannot be named, and it's the logarithmic math that I don't quite understand. biggrin.gif

So the question I have now is:

 

If the DT880 Pro 250Ω produce 96 dB with 1mW from beyerdynamic specifications and the LD MK IV puts out 500 mW into 300/600Ω, then why is the volume control required to be almost 1/3 for a normal listening level?

 

Pardon my noobness... biggrin.gif

Well, if it puts out 500mw and you use a pot that's linear, then wouldn't it be impossible to control? :P

A tiny turn and you'd already be above listening level.

post #4151 of 7043
Quote:
Originally Posted by TrollDragon View Post

...the site of he who cannot be named...

 

Voldemort?

post #4152 of 7043
Quote:
Originally Posted by Argyris View Post

Voldemort?

no not him

we talking about

beatlejuice
beatlejuice
beatlejui... opps
post #4153 of 7043

I'm actually pretty sure I know whom he's talking about. You know, I'm a northeast audio video guy myself, but I haven't got anything against the NW AV guys. biggrin.gif

post #4154 of 7043
Quote:
Originally Posted by TrollDragon View Post

Yes, I would like to understand this as well.

Somehow I just fail see how 1mW will produce any reasonable listening level at all. What am I missing here?

I plug my DT880 Pro's into the Colorfly C3 with it's 12mW output and even with the volume cranked on the C3 the headphones are no where near a decent listening level.

The specs in the data sheet of the PCM1770 (C3 DAC chip) state 13 mW rms into a 16Ω load... I'll have to do some math here and see what it is into 250Ω.

When I use my DT880 600 Ohm with my Matrix M Stage, I set the gain to 18 dB.
With my FiiO E12, I set the gain to 16 dB.

600 Ohm DT880 need a LOT OF VOLTAGE. So your amp may not have enough gain. biggrin.gif

To sum up:

Your amp needs to be able to output enough voltage (6 or 7 or 8 Volts RMS) and needs to have high gain, approx. 16-20 dB.
Edited by Chris J - 8/23/13 at 4:58am
post #4155 of 7043
Quote:
Originally Posted by Argyris View Post

I'm actually pretty sure I know whom he's talking about. You know, I'm a northeast audio video guy myself, but I haven't got anything against the NW AV guys. biggrin.gif

I kinda knew that, but couldn't help making a crack at it myself xD

Quote:
Originally Posted by Chris J View Post


When I use my DT880 600 Ohm with my Matrix M Stage, I set the gain to 18 dB.
With my FiiO E12, I set the gain to 16 dB.

600 Ohm DT880 need a LOT OF VOLTAGE. So your amp may not have enough gain. biggrin.gif

To sum up:

Your amp needs to be able to output enough voltage (6 or 7 or 8 Volts RMS) and needs to have high gain, approx. 16-20 dB.

 

 

Well OMG, I just got the money for those EPIC 600ohm RECABLED Beyer Dt 880s, I asked the seller to give me till today, and BAM today the check has arrived! [I almost cried in excitement!]

 

But yea 20Gain will be needed I'm sure. And since I got the Dt 880, I've obligated my self to purchase an Audio GD 10.32 in Early October... those 600 ohm cans deserve an improved and balanced amp [as the cans are recabled and reterminated to a 4pin XLR [with an XLR to 1/4" SE jack] so I'm mucho gusto happy, Plus I own the Matrix M Stage myself. So I should be in heaven till the Audio GD Balanced amp get's here. I am although not to thrilled to hear it's on the "dark side" but for a balanced amp driving a BRIGHT can that should = bliss. A slighty warm Solid State driving a Slighty colder Headphone.

 

that and I've sold my Ath a900x to a NEW head-fi'r! So the love is well shared today! 


Edited by Mshenay - 8/23/13 at 5:40am
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Headphones (full-size)
Head-Fi.org › Forums › Equipment Forums › Headphones (full-size) › The Beyerdynamic DT880 Appreciation / Discussion thread