Yeah Finray... and my top-spec gaming PC, Sony Vaio Windows laptop and countless other non-Mac accessories. Nice one, kid.Finray wrote:
http://www.yodawgyo.com/wp-content/uplo … e-macs.jpg
So, how much Voltage are you able to draw from something like a PC or an iPod?Freezer7Pro wrote:
Impendance is basically resistance. How much current something will let through at a specific Voltage. As you might know, Ohm's law/the power law states that P(Watts)=U(Voltage)*I(Current) and I=U/R(Resistance).some_random_panda wrote:
What's the deal with impedance? I see it, but I don't comprehend..Sup wrote:
@Freezer with shipping and customs around 470€ (620USD)
@Hooch the cans are HD600 (300 ohm) so an amp is a must
If you have a 8-Ohm speaker rated for 50 Watts, you will need an amplifier capable of outputting 20 Volts to reach maximum excursion. If you have another speaker rated 50 Watts, but at 16Ohm, you only get 25 Watts from that amplifier. You need a bit over 28 Volts to get 50W out of that one. 32Ohm, 40V. 64Ohm, 57V.
In the case of headphones, you need 1.26V to run a pair of 100mW/16Ohm phones. You need 5.47V to run a pair of 100mW 300Ohm ones.
Find out how powerful the DAC is and do the math.Jenspm wrote:
So, how much Voltage are you able to draw from something like a PC or an iPod?Freezer7Pro wrote:
Impendance is basically resistance. How much current something will let through at a specific Voltage. As you might know, Ohm's law/the power law states that P(Watts)=U(Voltage)*I(Current) and I=U/R(Resistance).some_random_panda wrote:
What's the deal with impedance? I see it, but I don't comprehend.
If you have a 8-Ohm speaker rated for 50 Watts, you will need an amplifier capable of outputting 20 Volts to reach maximum excursion. If you have another speaker rated 50 Watts, but at 16Ohm, you only get 25 Watts from that amplifier. You need a bit over 28 Volts to get 50W out of that one. 32Ohm, 40V. 64Ohm, 57V.
In the case of headphones, you need 1.26V to run a pair of 100mW/16Ohm phones. You need 5.47V to run a pair of 100mW 300Ohm ones.
This question could be totally... wrong. Excuse me if that is the case
finray's like, the worst troll everUzique wrote:
Yeah Finray... and my top-spec gaming PC, Sony Vaio Windows laptop and countless other non-Mac accessories. Nice one, kid.Finray wrote:
http://www.yodawgyo.com/wp-content/uplo … e-macs.jpg
u dun rel funny with teh internet meme!
Amplifiers dont output volts they output amps. They convert DC to AC. IF an amp outputs DC it will fry the speaker and most likely the output FETS on the amplifer itself.Jenspm wrote:
So, how much Voltage are you able to draw from something like a PC or an iPod?Freezer7Pro wrote:
Impendance is basically resistance. How much current something will let through at a specific Voltage. As you might know, Ohm's law/the power law states that P(Watts)=U(Voltage)*I(Current) and I=U/R(Resistance).some_random_panda wrote:
What's the deal with impedance? I see it, but I don't comprehend.
If you have a 8-Ohm speaker rated for 50 Watts, you will need an amplifier capable of outputting 20 Volts to reach maximum excursion. If you have another speaker rated 50 Watts, but at 16Ohm, you only get 25 Watts from that amplifier. You need a bit over 28 Volts to get 50W out of that one. 32Ohm, 40V. 64Ohm, 57V.
In the case of headphones, you need 1.26V to run a pair of 100mW/16Ohm phones. You need 5.47V to run a pair of 100mW 300Ohm ones.
This question could be totally... wrong. Excuse me if that is the case
wattwoblacklines wrote:
Amplifiers dont output volts they output amps.
Last edited by PyteWowah (2009-04-09 07:25:30)
I don't get this part. I'm not into electronics that much but isn't AC one way of power input and DC a different way? Some components have AC in, some have DC and PSU circuitry varies with it also.twoblacklines wrote:
They convert DC to AC.Jenspm wrote:
So, how much Voltage are you able to draw from something like a PC or an iPod?Freezer7Pro wrote:
Impendance is basically resistance. How much current something will let through at a specific Voltage. As you might know, Ohm's law/the power law states that P(Watts)=U(Voltage)*I(Current) and I=U/R(Resistance).
If you have a 8-Ohm speaker rated for 50 Watts, you will need an amplifier capable of outputting 20 Volts to reach maximum excursion. If you have another speaker rated 50 Watts, but at 16Ohm, you only get 25 Watts from that amplifier. You need a bit over 28 Volts to get 50W out of that one. 32Ohm, 40V. 64Ohm, 57V.
In the case of headphones, you need 1.26V to run a pair of 100mW/16Ohm phones. You need 5.47V to run a pair of 100mW 300Ohm ones.
This question could be totally... wrong. Excuse me if that is the case
Yep, changing the brand and tech-spec/quality of the tubes in my guitar amplifier can really alter the chiminess of the tone and the 'warmth' of the lows and trebles. It definitely is a far better sound when you take the analogue way, I'll never trade in my tube-amp for some solid-state digital emulation crap anymore-- even if the tube maintenance and the extra voltages are a hassle..Sup wrote:
@uzi I wanted a tube/valve amp cos with different tubes sound can change if I don't like it as it is and it gives a much warmer sound. I'd love to see some pics of your setup.
I'll ask you for some tips when I start tube rolling if you won't mindUzique wrote:
Yep, changing the brand and tech-spec/quality of the tubes in my guitar amplifier can really alter the chiminess of the tone and the 'warmth' of the lows and trebles. It definitely is a far better sound when you take the analogue way, I'll never trade in my tube-amp for some solid-state digital emulation crap anymore-- even if the tube maintenance and the extra voltages are a hassle..Sup wrote:
@uzi I wanted a tube/valve amp cos with different tubes sound can change if I don't like it as it is and it gives a much warmer sound. I'd love to see some pics of your setup.
Simply put: You are wrong.twoblacklines wrote:
Amplifiers dont output volts they output amps. They convert DC to AC. IF an amp outputs DC it will fry the speaker and most likely the output FETS on the amplifer itself.Jenspm wrote:
So, how much Voltage are you able to draw from something like a PC or an iPod?Freezer7Pro wrote:
Impendance is basically resistance. How much current something will let through at a specific Voltage. As you might know, Ohm's law/the power law states that P(Watts)=U(Voltage)*I(Current) and I=U/R(Resistance).
If you have a 8-Ohm speaker rated for 50 Watts, you will need an amplifier capable of outputting 20 Volts to reach maximum excursion. If you have another speaker rated 50 Watts, but at 16Ohm, you only get 25 Watts from that amplifier. You need a bit over 28 Volts to get 50W out of that one. 32Ohm, 40V. 64Ohm, 57V.
In the case of headphones, you need 1.26V to run a pair of 100mW/16Ohm phones. You need 5.47V to run a pair of 100mW 300Ohm ones.
This question could be totally... wrong. Excuse me if that is the case
easier said then done, heh.Freezer7Pro wrote:
Find out how powerful the DAC is and do the math.Jenspm wrote:
So, how much Voltage are you able to draw from something like a PC or an iPod?Freezer7Pro wrote:
Impendance is basically resistance. How much current something will let through at a specific Voltage. As you might know, Ohm's law/the power law states that P(Watts)=U(Voltage)*I(Current) and I=U/R(Resistance).
If you have a 8-Ohm speaker rated for 50 Watts, you will need an amplifier capable of outputting 20 Volts to reach maximum excursion. If you have another speaker rated 50 Watts, but at 16Ohm, you only get 25 Watts from that amplifier. You need a bit over 28 Volts to get 50W out of that one. 32Ohm, 40V. 64Ohm, 57V.
In the case of headphones, you need 1.26V to run a pair of 100mW/16Ohm phones. You need 5.47V to run a pair of 100mW 300Ohm ones.
This question could be totally... wrong. Excuse me if that is the case :P
Last edited by GC_PaNzerFIN (2009-04-09 14:54:24)
I know that the current-gen iPod DAC is 2x15mW. You don't get 120mW from any portable player on the market. The most powerful ones are at about 2x50mW.Jenspm wrote:
easier said then done, heh.Freezer7Pro wrote:
Find out how powerful the DAC is and do the math.Jenspm wrote:
So, how much Voltage are you able to draw from something like a PC or an iPod?
This question could be totally... wrong. Excuse me if that is the case
I think I found that the 3rd gen iPods have a DAC capable of outputting 3.3V... Sounds about right?
The Shure SE530's have a sensitivity at 119mW and impedence at 36Ohm.
so,
U2=PR
U2=119mW * 36Ohm
U=2.1V
well under the iPod's rating. Why would people then buy/build portable "pocket-amps" to use with these earbuds and an iPod?
Last edited by Freezer7Pro (2009-04-09 15:02:43)
Are you talking about DAC or amp?Freezer7Pro wrote:
I know that the current-gen iPod DAC is 2x15mW. You don't get 120mW from any portable player on the market. The most powerful ones are at about 2x50mW.Jenspm wrote:
easier said then done, heh.Freezer7Pro wrote:
Find out how powerful the DAC is and do the math.
I think I found that the 3rd gen iPods have a DAC capable of outputting 3.3V... Sounds about right?
The Shure SE530's have a sensitivity at 119mW and impedence at 36Ohm.
so,
U2=PR
U2=119mW * 36Ohm
U=2.1V
well under the iPod's rating. Why would people then buy/build portable "pocket-amps" to use with these earbuds and an iPod?
Portable players tend to have the DAC and amplifier combined into one chip..Sup wrote:
Are you talking about DAC or amp?Freezer7Pro wrote:
I know that the current-gen iPod DAC is 2x15mW. You don't get 120mW from any portable player on the market. The most powerful ones are at about 2x50mW.Jenspm wrote:
easier said then done, heh.
I think I found that the 3rd gen iPods have a DAC capable of outputting 3.3V... Sounds about right?
The Shure SE530's have a sensitivity at 119mW and impedence at 36Ohm.
so,
U2=PR
U2=119mW * 36Ohm
U=2.1V
well under the iPod's rating. Why would people then buy/build portable "pocket-amps" to use with these earbuds and an iPod?
Yeah but its still not the same. DAC cannot output powerFreezer7Pro wrote:
Portable players tend to have the DAC and amplifier combined into one chip..Sup wrote:
Are you talking about DAC or amp?Freezer7Pro wrote:
I know that the current-gen iPod DAC is 2x15mW. You don't get 120mW from any portable player on the market. The most powerful ones are at about 2x50mW.
A DAC can and does output power. It's it's sole purpose. It makes digital signals into analogue signals. If you beef up the analogue part, you get a small amplifier..Sup wrote:
Yeah but its still not the same. DAC cannot output powerFreezer7Pro wrote:
Portable players tend to have the DAC and amplifier combined into one chip..Sup wrote:
Are you talking about DAC or amp?
The sole purpose of Digital to analog converter is just what its initials say. DAC does not output any power, thats why we use amps. What DAC does output is not power but signal. Every signal needs to get amplified if you want to hear sound and standalone DACs don't have amplifiers hence no volume knob on any of them.Freezer7Pro wrote:
A DAC can and does output power. It's it's sole purpose. It makes digital signals into analogue signals. If you beef up the analogue part, you get a small amplifier..Sup wrote:
Yeah but its still not the same. DAC cannot output powerFreezer7Pro wrote:
Portable players tend to have the DAC and amplifier combined into one chip.
Analogue audio "signal" is the same as what you get out of the amplifier, just weaker. There are single-chip DACs with a powerful-enough output to drive a pair of headphones..Sup wrote:
The sole purpose of Digital to analog converter is just what its initials say. DAC does not output any power, thats why we use amps. What DAC does output is not power but signal. Every signal needs to get amplified if you want to hear sound and standalone DACs don't have amplifiers hence no volume knob on any of them.Freezer7Pro wrote:
A DAC can and does output power. It's it's sole purpose. It makes digital signals into analogue signals. If you beef up the analogue part, you get a small amplifier..Sup wrote:
Yeah but its still not the same. DAC cannot output power
Last edited by Freezer7Pro (2009-04-09 15:22:53)
If I understand you correctly plugging headphones into Passive RCA out will power them? Is that what you are saying?Freezer7Pro wrote:
Analogue audio "signal" is the same as what you get out of the amplifier, just weaker. There are single-chip DACs with a powerful-enough output to drive a pair of headphones..Sup wrote:
The sole purpose of Digital to analog converter is just what its initials say. DAC does not output any power, thats why we use amps. What DAC does output is not power but signal. Every signal needs to get amplified if you want to hear sound and standalone DACs don't have amplifiers hence no volume knob on any of them.Freezer7Pro wrote:
A DAC can and does output power. It's it's sole purpose. It makes digital signals into analogue signals. If you beef up the analogue part, you get a small amplifier.
Normal headphones don't need a lot of power to run. You can plug an amplifier into an MP3 player without turning the volume to the bottom.
