Thứ Ba, 5 tháng 7, 2016

Sound systems! part 1


BugMeister

What do you have hooked up to your computer for sound?

Mine's nothing too fancy, though at the moment I'm pushing 114db in my room at 30% volume.



Prisoner

running through a 100 watt Sansui amp - Wharfedale speakers

massive gutsy rockin' sound..!!

PS: I like yer speakers, dude - neat!

BugMeister

I love when the topic of sound systems comes to play.
This system is a project between my dad and I.

The main system (minus two speakers that we just added) and all of my dad's nascar merchandise.


And the amp that's pushing them all. We can't even turn it up a quarter volume (estimated, we don't want to put it to the test. ) without blowing every speaker...


Go analog. Really.
Oh, and just for reference, we do have it hooked to a computer.

Prisoner

That's impressive O_O

RST101

wow, bet that shakes the shelves..!!

Prisoner

Honestly, if your amp is that powerful that a quarter volume would blow your speakers... that's just awesome

I'm not sure the exact wattage of my stereo. All I know is I keep the head at 30% and control the volume from my computer. I generally go 25-30% volume on my computer, although when I'm in the mood to jam, I'll turn my computer up to 80-100%

Guest

We're not quite sure of a lot of things about our amp. My dad bought it off of someone back in the late 70's, and back in 2000 he wanted to know more about it. He took it to a shop to see if they could find anything on it, and came to find out that *supposedly* (we dunno if it's true) it's a commercial amp made in Germany that was used to power the PA system speakers for supermarkets. We know that it's well exceeding 2000 watts... just don't know by how much.

Guest

Quote�� Quote: Originally Posted by Prisoner View Post
We're not quite sure of a lot of things about our amp. My dad bought it off of someone back in the late 70's, and back in 2000 he wanted to know more about it. He took it to a shop to see if they could find anything on it, and came to find out that *supposedly* (we dunno if it's true) it's a commercial amp made in Germany that was used to power the PA system speakers for supermarkets. We know that it's well exceeding 2000 watts... just don't know by how much.
HOLY COW, I think my head is maybe 400 watts...

Guest

Currently using logitechs z5500 unit hooked up to an asus xonar dx. I wouldn't want anything else!

I use it for everything from listening to normal tv to gaming to movies to music, it's an awesome bit of kit, especially for the price.


Guest


There you go. =p

RST101

Cheers mate, dont know why it wouldn't allow me to do it?? I'm having one of those nights

deadevil13

I dont really have a picture atm.

I use a 1984 JVC A-K11 Amplifier - which is pretty beastly for me. I adore this little unit, and it packs an extremely good punch. Its hooked up to its original speakers (JVC S-40's), which i have the girlls off - because old speakers look so beautiful 'naked'. It is hooked up to my computer as well, along with a Sony CD Player (just a budget one) and a JVC T-K11L Tuner - which is temperamental at best.

Its pretty loud for its age. Surprised it was still working now its so old - think hardly any of the JVC products made in the late 90s will see 2040's! I usually have it on 1 (out of 10) with the computers master between 80-100. And even then its pretty loud, although i have had it up to 4 playing hip-hop... and with all doors/windows closed in my house - you can hear them thumping away in my garden XD.

I do have a video though, of the setup playing Bass I Love You...

YouTube - JVC S-40 - Bass I Love You

LiquidSnak

That's some nice travel. I have an Onkyo receiver hooked up to the output of my computer, running very old speakers (talking mid 70's). The names have worn off of them, but I have had the police called while playing video games loud to reports of gunshots in the area.

I'm fairly certain that the receiver and speakers combined weighs in at over 100Kg, easy.

DirtyElf

i have a klipsch 2.1 system... i like it for computer sound

sphred

Hi I'm new on here, but my computer is running through my Kenwood KR 5030. I had it put away for many years and when I got it out I blew speakers left ,right and center. I just googled yours the way I did mine and there is all kinds of info for you there, They are still very wll thought of. I fixed my speaker problem by trolling used store flea markets and such and after blowing many of them I found some that work. I Have f bought new big Pioneers with the watts to handle but they gave out at about 4 with the loudness off so I put on 4 Allegros from the same time period and with the six I can now hit 6 with the loudness on and 7or 8 with it off(forget the woofers and watch the windows!!!).I think your amp is rated for 150 watts by Kenwood, but that isn't the same now days it would just throw the breakers in new 150's and I don't know enough to know why.(just experience). Anyway there is lots of info there to see have a look and good luck they're sweet recievers.

pparks1

Wattage has very, very little to do with how loud speakers actually get. The primary factor to determine how loud something is is actually the sensitivity (or efficiency of the speaker). A speaker rated at 90dB will produce music at 90 decibels from 1 meter away with 1 watt of power. Generally speaking, the human ear can register a change of +/-1dB. An increase of 10dB is what is required for the human ear to hear a doubling a volume.

And the lower the sensitivity of the speaker, the more power it takes from the amplifier to reach the same levels of volumes. For example a speaker that is rated at 85dB takes 2x as much power to play at same volume levels of a speaker rated at 88dB. So, this efficiency is extremely important to consider when determining volume levels.

If you take a stereo amplifier that produces 50 watts and you compare the maximum volume levels to an amplifier that produces 100 watts of power, you will not hear a 2x increase in volume. Instead, you will gain approx 3dB...which is noticeable...but not dramatic. The general rule of thumb is that you would need 7-10x as much power to generate a 10dB increase. Thus, if you want to ensure 2x the loudness level of a 50 watt amplifier, you would need a 350-500 watt amplifier to accomplish it.

Here is an article which goes into far more depth;
Stereo Amplifier Power - Amplifier and Speaker Efficency - Amplifier Power and Speaker Loudness

And here is a thread that discusses this as well as it relates to guitars;
http://www.acousticguitarforum.com/f.../t-153746.html


One other thing worth noting, is there isn't a standard for measuring the power output of receivers that is reliable. Some manufacturers like Sony usually max out 1 channel and then just assume 110 watts (max from 1 channel x 7 channels) = 770 watts. However, the problem is the amp does not have the current to even come close to supplying continuous power to push all 7 of those channels anywhere near that max. It's likely to max out around 7-10 watts per channel before it clips so bad it blows speakers.

On the other hand, some manufacturers (like Harmon Kardon), actually list their power like this 65 watts per channel with all channels driven. See this link (http://www.harmankardon.com/EN-US/Pr...PID=AVR%202600). But would you believe some people won't buy a Harman Kardon because it's only 50 or 65 watts per channel and instead they just get something else listed at 100-150 watts per channel. Oh well, that's marketing for you.

pparks1

Quote�� Quote: Originally Posted by Prisoner View Post
We're not quite sure of a lot of things about our amp. My dad bought it off of someone back in the late 70's, and back in 2000 he wanted to know more about it. He took it to a shop to see if they could find anything on it, and came to find out that *supposedly* (we dunno if it's true) it's a commercial amp made in Germany that was used to power the PA system speakers for supermarkets. We know that it's well exceeding 2000 watts... just don't know by how much.
Actually, most of this information is wrong

Your amplifier listed here is a Kenwood KR-8050


Here is the brochure on this exact model, it's 120 watts per channel or up to 150 watts per channel if PowerBoost is activated with a 8ohm load and this is only a 2 channel amplifier. So, it's nowhere near the 2000 watts that you estimated above.
http://www.fmtunerinfo.com/newp7-9050-8050rx.gif

I'm not positive on the dates of manufacture, but I think that the KR-8050 was released in 1980


My PC outputs via onboard sound via optical cable to a Sony STR-845 receiver


My speakers are a pair of Polk RT800i's; (mine are black, not cherry)


And I also have a Polk PSW-350 subwoofer;


These are basically the remnants of my old Home Theater system that I replaced with nicer equipment.

sphred

Thanks for the help, I no nothing technical but knew my 5030 is only 60 watts and pointed to the info on Google.

Zucchey

curently using Logitech X-530, 5.1 Speaker System, 70W RMS it isn't that powerfull but powerfull enough to drive my neighbours insane!

LiquidSnak

Just looked up the info on my system, and I have 6 speaker outputs, all rated at 160W, any two pairs can be used at a time. Since my speakers are getting very old, and are paper, I might see about replacing them with new cones

wakeboardr116

Picked up a used Logitech X-540 off a friend for 50 bucks. Good enough sound for me on my PC. I think it's actually better than my Home Theater setup right now. My parents have a really nice klipsch setup at home though that sounds absolutly amazing.

linnemeyerhere

Ultra high quality sound is coming and it will feed right into a high end DAC then to a preamp or surround processor. From there it's the sky's the limit. Clean typography of circuits and of course vacuum tubes if you can afford. The computer will be an good front end but only if Lossless or someday soon Hi-Res recordings are used. Downloaded Mp3's belong solely for basic ear buds or a low end car system. Still vastly prefer a great analog front end but that again could be out of you budget but in the end it's about great sound and has zero to do with loudness and such.
Good luck in your quest it's a fun and crazy trip but one well worth taking and always compare to live music in free space to reference you upgrades and changes.
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linnemeyerhere

That's pretty amazing

linnemeyerhere

I like an idiot didn't even take pictures of my last system which was a combination of a lot of what you see here with the addition of bi-amp'ing my mains with over 375 watts per channel 200 to the woofers and 175 to the mid's and highs running this through an external processor / crossover the AR9's over 30 years old awoke and never and I mean never sounded so good. Added a Pioneer Elite Blu-ray player and a nice little Cambridge Audio DAC and the system was flat out wicked just needing slow deliberate tweaking over time. The DAC was much kinder to a optical source to the usb source the jitter in the usb and artifacts of noise just not acceptable in a system with this much resolution. Stay tuned for one day I will re-assemble the best of all the bits into a wicked stereo and surround system. It was already close but needed the analog front end in place for the stereo side.

LiquidSnak

Very nice I'm satisfied with mine; it was free from my neighbor, haha

Prisoner

That makes it the best bang for the buck !

linnemeyerhere

"Free" ninety nine is a good price.

Guest

Oh for sure they're Fiscer speakers so they're pretty decent quality too

Guest

Quote�� Quote: Originally Posted by pparks1 View Post
Here is the brochure on this exact model, it's 120 watts per channel or up to 150 watts per channel if PowerBoost is activated with a 8ohm load and this is only a 2 channel amplifier. So, it's nowhere near the 2000 watts that you estimated above.
Doesn't explain too well why it's blown 4 of my Cerwin-Vega's at once with half volume... and the channels are showing 300 watts per channel, not 120 or 150.

Guest

Ahh yes youthful exuberance and over estimations !

Skulblaka

Here's my sound-system. Works well, I'm satisfied and it's portable.

LiquidSnak

Mmm. Skullcandy = sex.

When my Nakamichi headphones die I am replacing them with skullcandy.

Skulblaka

Are those "Dr. Dre" headphones any good? I'm looking for crystal quality. Mine are doing well, I'm curious if there are better headphones, not that I'm unhappy with mine.

noobvious

Quote�� Quote: Originally Posted by Skulblaka View Post
Are those "Dr. Dre" headphones any good? I'm looking for crystal quality. Mine are doing well, I'm curious if there are better headphones, not that I'm unhappy with mine.
If you like the Skullcandy ones, you might like the Dr. Dre ones....but they cost a hell of a lot more money.

Skulblaka

Quote�� Quote: Originally Posted by noobvious View Post
Quote�� Quote: Originally Posted by Skulblaka View Post
Are those "Dr. Dre" headphones any good? I'm looking for crystal quality. Mine are doing well, I'm curious if there are better headphones, not that I'm unhappy with mine.
If you like the Skullcandy ones, you might like the Dr. Dre ones....but they cost a hell of a lot more money.
I've noticed.

LiquidSnak

If I am not mistaken, those are the Hesh, correct?

Skulblaka

They're "SK Pro".

LiquidSnak

I've had my eye on the Ti for a while, but they're so discontinued, all the styles I like are cheap now ^_^

linnemeyerhere

AKG accept no other substitute !
AKG K701 Headphones

noobvious

I run a line-out from my PC to my stereo, and it does sound decent....but my best sound comes from me plugging these into it....

http://www.gradolabs.com/product_pages/sr60.htm

LiquidSnak

I never understood how headphones are so expensive..

noobvious

good headphones are expensive because of two things:

Tolerances, and because they can. I'd pay twice as much for identical looking headphones if they sound awesome. Expensive headphones (some of them) cater to audiophiles. Same reason I run a mini surround sound setup around my desk.

Some headphones are expensive just so they can say "hey, we are expensive, so we are the best"

pparks1

Meh, I paid 20 bucks for Sony Studio Monitor headphones and I'm totally happy with them

noobvious

Quote�� Quote: Originally Posted by Benjamin Hall View Post
Meh, I paid 20 bucks for Sony Studio Monitor headphones and I'm totally happy with them
Let me guess.....the MDR-V150? If so, believe me, you can do much better.....I had those for a while.

linnemeyerhere

Quote�� Quote: Originally Posted by Prisoner View Post
Quote�� Quote: Originally Posted by pparks1 View Post
Here is the brochure on this exact model, it's 120 watts per channel or up to 150 watts per channel if PowerBoost is activated with a 8ohm load and this is only a 2 channel amplifier. So, it's nowhere near the 2000 watts that you estimated above.
Doesn't explain too well why it's blown 4 of my Cerwin-Vega's at once with half volume... and the channels are showing 300 watts per channel, not 120 or 150.
I don't know what to tell you...the model you posted a picture of was easily found online and I linked to the sheet showing power output and it is what it is.

Speakers don't often blow because the amount of power being fed to them...they often blow due to lack of quality power or what's known as clipping. http://en.wikipedia.org/wiki/Clipping_%28audio%29. I used to own some Cerwin Vega speakers and they are highly efficient. Thus, they can easily pull a lot of power from a receiver.

Quote�� Quote: Originally Posted by noobvious View Post
I run a line-out from my PC to my stereo, and it does sound decent....but my best sound comes from me plugging these into it....

http://www.gradolabs.com/product_pages/sr60.htm
Yep, gotta pair of Grado SR-125's on my desk at work. I love my headphones. Worth every penny that I paid.

LiquidSnak

Quote�� Quote: Originally Posted by pparks1 View Post
Quote�� Quote: Originally Posted by Prisoner View Post
Quote�� Quote: Originally Posted by pparks1 View Post
Here is the brochure on this exact model, it's 120 watts per channel or up to 150 watts per channel if PowerBoost is activated with a 8ohm load and this is only a 2 channel amplifier. So, it's nowhere near the 2000 watts that you estimated above.
Doesn't explain too well why it's blown 4 of my Cerwin-Vega's at once with half volume... and the channels are showing 300 watts per channel, not 120 or 150.
I don't know what to tell you...the model you posted a picture of was easily found online and I linked to the sheet showing power output and it is what it is.

Speakers don't often blow because the amount of power being fed to them...they often blow due to lack of quality power or what's known as clipping.

Quote�� Quote: Originally Posted by noobvious View Post
I run a line-out from my PC to my stereo, and it does sound decent....but my best sound comes from me plugging these into it....

http://www.gradolabs.com/product_pages/sr60.htm
Yep, gotta pair of Grado SR-125's on my desk at work. I love my headphones. Worth every penny that I paid.
When I bought the SR60i's, I had never spent more than $20 on headphones before, so spending $74 took a leap of faith....but I would do it again in a heartbeat.Name:  heavy-metal-044.gif  Views: 31  Size:  575 Bytes

LiquidSnak

If your listening to downloaded MP3's then less is more hell you already have a 10th of the audio information and for sure if all you do is gaming then maybe comfort and playing load is your thing. If on the other hand you like music and can discern all it's finer nuances then good is better and great is better still. Headphones can run into the thousands and would I pay that much for them, not likely but it's the same with everything especially computers. But if you can exploit the difference and appreciate them then spending a couple of hundred or more for outstanding cans makes all the difference in the world. Spend some quality time with some hi-res music or even standard cd's or lossless formatted music with real quality cans and you will notice all sorts of aural differences then the goal is to find the cans that match your tastes and fit your budget.

Guest



That took me forever to find a picture on the internet. Should have just taken one with a camera :P

My next audiophile investment:


Guest

O_O nice

Guest

Only 1,800,000 Yen plus freight. I definitely need to up my income before that's anywhere near feasible lol

Skulblaka

Quote�� Quote: Originally Posted by LiquidSnak View Post
Only 1,800,000 Yen plus freight. I definitely need to up my income before that's anywhere near feasible lol
Heeey, you're in Japan? ????

LiquidSnak

I can't afford an expensive sound system, one with 7 towers and a separate 12" sub.. but you know what? I'm currently at 122db in my bedroom right now with my speakers, and I'm only at ~35% volume

Skulblaka

Quote�� Quote: Originally Posted by Skulblaka View Post
Quote�� Quote: Originally Posted by LiquidSnak View Post
Only 1,800,000 Yen plus freight. I definitely need to up my income before that's anywhere near feasible lol
Heeey, you're in Japan? ????
Nah, but I have not seen a retailer carry them over here. Also, my Japanese is atrocious.

I am also happy with my current setup, but I aspire to greater things :P

LiquidSnak

Quote�� Quote: Originally Posted by LiquidSnak View Post
Quote�� Quote: Originally Posted by Skulblaka View Post
Quote�� Quote: Originally Posted by LiquidSnak View Post
Only 1,800,000 Yen plus freight. I definitely need to up my income before that's anywhere near feasible lol
Heeey, you're in Japan? ????
Nah, but I have not seen a retailer carry them over here. Also, my Japanese is atrocious.

I am also happy with my current setup, but I aspire to greater things :P
...? Eh...? I don't understand your answer.

Joshatdot

The only retailers that sell the system I want are located in Japan The second part was for Mr. Hall

linnemeyerhere

I guess these can go here, my DAP, Headphones and Amp:

Cowon iAudio 7 16GB
JVC HA-FX66s w/Shure Foam Olive Tips
Joshatdot CMoy Amp of my own design












Guest

The key is to start with quality components, here in the states we have Craig's List and I highly suggest doing some research and build a great used system first. Go stereo at first. Get some great mains and then look for a powered sub to fill out the bottom end. I like Paradigm speakers but you can go all sorts of directions with styles and cost. A good receiver will get up up and playing music then later you can search for separate components. I like running my audio out from the computer via optical into a good DAC and then into the preamp/receiver I get the clearest and most accurate sound this way. Remember these stereo speakers will image and create a sound stage that will blow your mind when set up properly, so take you time and experiment with speaker placement and such. As this addiction for audio grows you can use this system as a great bedroom or other room system as your education and interest grows. Grab a Stereophile or Absolute Sound magazine and have fun don't be too intimidated by the components as your shopping for older units off CL and they will luck will be cents on the dollar ! Stay away from the system in a box stuff. Have a blast and listen deep !

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