Dear members,
I need your advice, I want to add a standard vintage graphic equalizer to my Turntable and active speaker setup please advice would it work before I assume and spend on the speakers.
Planned setup is:
TT -> Phono PreAmp -> Graphic Equalizer -> Active Speakers
Would the above work in a situation where the equalizer function as expected?
Thanks in advance.
I need your advice, I want to add a standard vintage graphic equalizer to my Turntable and active speaker setup please advice would it work before I assume and spend on the speakers.
Planned setup is:
TT -> Phono PreAmp -> Graphic Equalizer -> Active Speakers
Would the above work in a situation where the equalizer function as expected?
Thanks in advance.
Yes, it has to go there. Normally they have unity gain when the controls are set to center.
The equalizer should have a low enough output impedance to properly drive the active speakers.
You probably need the type that is a combined preamp and equalizer, so you can control the volume
and source selection, unless the speakers have a remote with volume control.
The equalizer should have a low enough output impedance to properly drive the active speakers.
You probably need the type that is a combined preamp and equalizer, so you can control the volume
and source selection, unless the speakers have a remote with volume control.
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Thanks @rayma for your reply.
The active speakers have volume control so that shouldnt be an issue, but after doing some more research I am concerned on equalization part,
actually I plan on buying Edifier S3000 Pro that comes with vol, bass, treble nobs what I plan to do is keep bass,treb on zero and equalize from my JVC equalizer-which would sit between phonopre amp and speakers, till now everything seems to be working normally but after reading that the Edifiers have
auto DSP(Digital Signal Processing) not sure if this is gonna interfere with my plan of equalization from JVC.
Please let me know if you have any inputs?
Regards
Think this would work, since the JVC eq is a source tone control, and should not
interact with the speaker DSP. Perhaps you can contact the mfr and ask them as well.
You would not want to turn the eq bass way up with speakers like this, however.
Just use the JVC for mild tone corrections.
interact with the speaker DSP. Perhaps you can contact the mfr and ask them as well.
You would not want to turn the eq bass way up with speakers like this, however.
Just use the JVC for mild tone corrections.
If you really need equalization, a parametric equalizer might work better. A parametric EQ allows you to adjust the centre frequency and bandwidth as well as level. One parametric filter can be made from a single quad op-amp (state-variable filter). https://sound-au.com/articles/state-variable.htm#s30
Correct! I would be using JVC Eq only for minor corrections while have the bass,treb on the Edifier on zero.
Thanks @rayma
Hi, For S/Q you would be much better served by adding a MiniDSB 2x4 HD, (not the lower version as that is only suitable for bass control) plus their mike. Then you have infinity levels of control & you can measure on a computer what you have achieved, good or bad.
cheers
cheers
Computer in the music room can produce noise in a turntable. They howl digitally, even if they comply with regulations. Not everybody has or wants a cell phone to program a DSP. I don't want to register with apple, google (android) or microsoft(windows) .
Analog graphic equalizers are very cheap on the used market. Risk is a bad pot.
Nice digital rant, the active monitors the op was talking about have an auto dsp and probably class D so keeping the chain analog seems like a non-starter. Although much maligned for converting everything to digital the tSony esd1000 has a very useful, powerful (but not user friendly) parametric eq (also an excellent dac, refined input/volume control). The phono stage and digital conversation of analog input are still issues.
Thing to look at: schiit lokius, sae parametric, some sansui eq have remotes, euro rack or mixer with eq. You could also ADC out of the TT to your computer, let the computer do RIAA and eq with eAPO, DAC it out to your monitors (im no expert on this but there are some here)
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Here's what I see that's wrong with letting the computer do the RIAA:
1. A true phono preamp is more than just RIAA, it's also cartridge termination, which affects response, and proper gain with input stage optimized for a cartridge signal. Without the cart termination being correct (and they're each a little different) you will deviate from the RIAA curve at that point. Cart loading is a combination of a resistive load, a capacitive load, and the reactance of the input stage, which in a really good phono pre should be a non-factor, but in practice, many add an additional load and bend the EQ curve. However, this can be addressed in step 4, if a real phono preamp is used.
2. The RIAA curve covers a 40dB gain range. That means that if you digitize wtihout RIAA EQ, your bit depth vs frequency will be disproportionate, with most energy concentrated at upper mid and high end. I'm not sure how big a problem this is, but that 40dB gain spread makes the situation pretty severe.
3. Very few preamps, especially mic preamps, are designed to deal with a cartridge expecting 47K loading. You have a real potential for some noise issues that may not be present with a proper phono preamp. Those that attempt to connect their cartridge to a mic preamp are destined for poor RIAA curve tracking.
4. Calibration (done correctly) would be difficult at best. When using a phono preamp a test record, like the CBS STR100, which has a response sweep recorded 40-500Hz at constant amplitude and 500-20KHz at constant velocity essentially bypasses the record RIAA curve, removing one more source of error. The respone curve of an STR100 sweep is published, and known, so interpretation is a non-issue. Playing an equalized sweep, or playing the STR100 sweep without RIAA EQ places an additional step on the operator of figuring out what to expect.
A good RIAA phono preamp isn't hard to come by, and a very worth while tool if digitizing or even playing vinyl is of any concern. Doing RIAA in the computer is simply cheap and easy solution for which you sacrifice optimal performance.
1. A true phono preamp is more than just RIAA, it's also cartridge termination, which affects response, and proper gain with input stage optimized for a cartridge signal. Without the cart termination being correct (and they're each a little different) you will deviate from the RIAA curve at that point. Cart loading is a combination of a resistive load, a capacitive load, and the reactance of the input stage, which in a really good phono pre should be a non-factor, but in practice, many add an additional load and bend the EQ curve. However, this can be addressed in step 4, if a real phono preamp is used.
2. The RIAA curve covers a 40dB gain range. That means that if you digitize wtihout RIAA EQ, your bit depth vs frequency will be disproportionate, with most energy concentrated at upper mid and high end. I'm not sure how big a problem this is, but that 40dB gain spread makes the situation pretty severe.
3. Very few preamps, especially mic preamps, are designed to deal with a cartridge expecting 47K loading. You have a real potential for some noise issues that may not be present with a proper phono preamp. Those that attempt to connect their cartridge to a mic preamp are destined for poor RIAA curve tracking.
4. Calibration (done correctly) would be difficult at best. When using a phono preamp a test record, like the CBS STR100, which has a response sweep recorded 40-500Hz at constant amplitude and 500-20KHz at constant velocity essentially bypasses the record RIAA curve, removing one more source of error. The respone curve of an STR100 sweep is published, and known, so interpretation is a non-issue. Playing an equalized sweep, or playing the STR100 sweep without RIAA EQ places an additional step on the operator of figuring out what to expect.
A good RIAA phono preamp isn't hard to come by, and a very worth while tool if digitizing or even playing vinyl is of any concern. Doing RIAA in the computer is simply cheap and easy solution for which you sacrifice optimal performance.
Yes, some do. And many do not. Most computer related noise issues relate to an underperforming PSU and poor grounding. However, I have a number of computers personally, both Win and Mac, and and even greater number at various clients studios. Not a single one produces any "howl" or other digital noise. But we do pay close attention to grounding in all cases.
The biggest noise issue is acoustic from the fans, but even those can be dealt with.
Additionally, proper attention to the turntable/tone arm/cartridge and preamp grounding solves the electrical noise issues regardless.
I agree a cell phone running a DSP EQ is a bad idea. Not for your reasons, though. Mostly I have operational issues with their EQ style and ease of adjustment, and interconnection with audio systems. Apple, Google, and Microsoft are the least of your worries. They are huge companies with massive budgets and staffs assigned to mitigate security issues. Mostly they do pretty well. Not taking advantages of their services is generally a far greater risk. And there's always Linux if you want to steer clear of the big guys and go it on your own. You will, however, be very much on your own.