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post #1911 of 3866
What's the THD and power output on it?
That's all I care about I hate all these fancy featured ones, all I want is a 7.2 surround amp with under .08% THD 100 WPC and rca level inputs to go from phono to rca from the back of my computer.

Everything else(eq, crossover, decoder) I will get something else to do the job.
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post #1912 of 3866
Quote:
Originally Posted by Darkapoc View Post
What's the THD and power output on it?
That's all I care about I hate all these fancy featured ones, all I want is a 7.2 surround amp with under .08% THD 100 WPC and rca level inputs to go from phono to rca from the back of my computer.

Everything else(eq, crossover, decoder) I will get something else to do the job.
THD is not as important a number as some would lead you to believe. Basically any modern amp (that isn't tube powered) will already have THD far lower than you could hear.

EDIT: BTW I just have to address a point you made earlier... 2.1 or 2.0 will ALWAYS be king for music reproduction. Period.

Of course if you were talking about stuffing more drivers into a cabinet in a 2.0 setup, yes, that and an equally sophisticated crossover will sound very nice.

For movies, though, 5.1 and 7.1 are really cool and immersive.
Edited by LingLing1337 - 1/29/11 at 8:41am
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post #1913 of 3866
Quote:
Originally Posted by LingLing1337 View Post
THD is not as important a number as some would lead you to believe. Basically any modern amp (that isn't tube powered) will already have THD far lower than you could hear.

EDIT: BTW I just have to address a point you made earlier... 2.1 or 2.0 will ALWAYS be king for music reproduction. Period.

Of course if you were talking about stuffing more drivers into a cabinet in a 2.0 setup, yes, that and an equally sophisticated crossover will sound very nice.

For movies, though, 5.1 and 7.1 are really cool and immersive.
My understanding is that in 5.1 setups as well as 7.2 setups use the same channel for the side and the rear for the 7.1 setup which is basically the same as an old A/B channel setup in the old stereo receivers for the rear. I could have misundersood, but I thought that the rear and side channels in a 7.1 setup are completely the same signal from the receiver
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post #1914 of 3866
Quote:
Originally Posted by coreyL View Post
My understanding is that in 5.1 setups as well as 7.2 setups use the same channel for the side and the rear for the 7.1 setup which is basically the same as an old A/B channel setup in the old stereo receivers for the rear. I could have misundersood, but I thought that the rear and side channels in a 7.1 setup are completely the same signal from the receiver
I'm not into HT so I wouldn't really know. But I should think that, by now, the BluRay standard supports and utilizes at least 5.1 separate channels of sound.
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post #1915 of 3866
.08% is just what I hold as a standard, Anything below 2 really I can't tell the difference. I just like the lower number since I run nothing but 4 ohm speakers in my systems
You can just turn off the surround/ side channels when listening to music and have nicer speakers for your front stage which is what I would do anyways.
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post #1916 of 3866
Quote:
Originally Posted by LingLing1337 View Post
I'm not into HT so I wouldn't really know. But I should think that, by now, the BluRay standard supports and utilizes at least 5.1 separate channels of sound.
I know for a fact that blu rays support 5.1 channels. You missed my point If that is your response, or I have not extrapolated the information in your response properly.

Quote:
Originally Posted by Darkapoc View Post
.08% is just what I hold as a standard, Anything below 2 really I can't tell the difference. I just like the lower number since I run nothing but 4 ohm speakers in my systems
You can just turn off the surround/ side channels when listening to music and have nicer speakers for your front stage which is what I would do anyways.
You'd love my subwoofer if it worked properly then. It's a Velodyne ULD 18. +-3db ranges from 14Hz-85Hz. @20Hz it can push out 104db with 0.5% THD, or 120db with under 3% db @ 20Hz. It has the same exact acoustical specs as a Velodyne DD18 servo subwoofer, problem is...my servo isn't working properly

At this point I'm seriously considering messing with my 400 watt class b ULD series II power servo controller and attempt to delete my servo function entirely. If that fails, then I'll first get an LMS ultra 5400 driver, then put that in my velodyne box, then put a 1000 watt or more damn good plate amp inside my velodyne box, seal the servo hole, then I can control the sub and plug it in from the side. I'd also re finish and get the box air brushed with some type of art if I did that. I'm thinking metallic grey and some time of dragon art and a badass TC sounds logo of sorts air brushed on it.

Would the LMS ultra in the same box sound just as good as my current setup? Would I be able to obtain the same acoustical output with 1000 watts into that driver and still get under 1% distortion while doing so? I'm aiming for 120+ DB with hopefully under 1% distortion. can it do that with 1000 watts RMS?
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post #1917 of 3866
Corey:
You'll need to check the parameters between both your Velodyne and the TLS subwoofer, to make sure that they'll work correctly in the same box. I'll bet the TLS won't work as well in that box. Also, you will have a VERY hard time pushing 1000w RMS on a standard wall outlet. Period.
 
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post #1918 of 3866
Quote:
Originally Posted by LingLing1337 View Post
THD is not as important a number as some would lead you to believe. Basically any modern amp (that isn't tube powered) will already have THD far lower than you could hear.
Not to mention that the speakers will cause far more THD than the source ever will. IM or IMD (Intermodulation Distortion) is a far more important measurement for sound quality.
post #1919 of 3866
Quote:
Originally Posted by pioneerisloud View Post
Corey:
You'll need to check the parameters between both your Velodyne and the TLS subwoofer, to make sure that they'll work correctly in the same box. I'll bet the TLS won't work as well in that box. Also, you will have a VERY hard time pushing 1000w RMS on a standard wall outlet. Period.
Not true i run my double 18s of 1 15a outlet at many venues and that amp is pushing 1300WRMS and currently in my studio i have 2 800wrms powered 18s in one outlet. I have run a volt meter on both setups to insure the line voltage is good and it never drops below 120v so that means the amps are puteing out there full wattage. It really depends on the amp.
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post #1920 of 3866
Quote:
Originally Posted by chinesekiwi View Post
Not to mention that the speakers will cause far more THD than the source ever will. IM or IMD (Intermodulation Distortion) is a far more important measurement for sound quality.
That's why I listed THD specs on the actual acoustical output of what the driver itself is capable of, if it worked properly

Then again, .05% THD is completely pointless for any application possible.

Quote:
Originally Posted by pioneerisloud View Post
Corey:
You'll need to check the parameters between both your Velodyne and the TLS subwoofer, to make sure that they'll work correctly in the same box. I'll bet the TLS won't work as well in that box. Also, you will have a VERY hard time pushing 1000w RMS on a standard wall outlet. Period.
Wall outlets put out 1500 watts RMS easily, more if you upgrade them. I'm not going to be pushing 120+db all the time, however, I DO want that potential. I want to be able to push out 120db with no audiable distortion for DAYS and NOT HAVE IT BREAK, no matter how hard I try to push the driver. I hate the fact that if anything touches my servo cord at all, it will pop out and i literally need to take the driver out half the time when it does and touch the accelerometer conductors with my finger to pop the servo back on when it does pop out. I have a feeling I seriously damaged my driver by now by popping it so badly from just playing music under 80 db at all times. I need to take out this acellerometer servo function and if it sounds just as good, I don't care, if it sounds worse, then I will invest in an LMS ultra 18" DVC driver and hope it can put out the same specs as my Velodyne driver.
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