Bush thug 39 Posted September 9 Share Posted September 9 (edited) Hi I was wondering what I have to do to set up the parametric e.g. right on the rythmik subwoofer. Do I need a Mic and software to read the room? And if so what software and Mic would I use? Also is there a link to a tutorial I could use or watch to get a better understanding on how to do this properly. Thanks in advance steve Edited September 9 by Bush thug Quote Link to post Share on other sites
gibbo9000 233 Posted September 9 Share Posted September 9 There are a few posts / techniques for setting up subs by ear, but if you getting down to the level of the PEQ settings then I would strongly suggest Mic and software (which will also help with phase and volume). I use a Umik-1 mic from mini-DSP and Room Equalisation Wizard as software (free). Quite a bit written around REW procedures. Umik mics come up in classifieds occasionally but go in minutes, and may be worth asking in WTB whether you can borrow one (a few ads like that appear). If not I sense worth investing in one. Which sub do you have? I have an F12 which is great. Gibbo 1 Quote Link to post Share on other sites
Bush thug 39 Posted September 9 Author Share Posted September 9 I have the f12 as well I just got it but the dampening switch is busted. Does that make much of s difference is it worth getting fixed. I do have a Mic from my marantz would that work. Thanks heaps for the info Quote Link to post Share on other sites
colinm1 876 Posted September 9 Share Posted September 9 You may need a calibration mic,, I use a behringer as they are designed with a flat response, mine cost under $100, Quote Link to post Share on other sites
Bush thug 39 Posted September 9 Author Share Posted September 9 Sweet just ordered a umik so wait till that gets here and I will start to play around. Is the software going to be easy to understand or should i do some reading. If so has anyone got a good link that is easy to understand on using the wizard. Thanks again I love this site Quote Link to post Share on other sites
AudioGeek 853 Posted September 9 Share Posted September 9 The rythmik PEQ is pretty limited, can pull down 1 peak a little bit. It does make a difference. Not sure what your source is, but a minidsp dirac unit would probably give the best achievable bass response in a typical domestic listening environment. Post up what you measure. Quote Link to post Share on other sites
Bush thug 39 Posted September 9 Author Share Posted September 9 My mate has a Mic for his dbx unit that I might give a go today. While I wait for the other Mic. Will post my results My sources are Marantz CD player MacBook pro /audiophillio /rega dac Music hall 9.1 turntable I got the sub cheap so don't mind spending a little bit to get it sounding it's best. What mini dsp do you recommend? Where do you put the mini dsp in the chain does it go just before the sub? Can you get them with speaker cable in? Thanks steve 1 Quote Link to post Share on other sites
AudioGeek 853 Posted September 10 Share Posted September 10 Are you using a preamp or integrated? What speakers and how is the sub currently connected? Best to measure what you have first and then workout a strategy. If you use a minidsp you can get rid of your audiophillio and rega dac. It works as a dac/pre/crossover/room correction all in one. Plug in all your sources, send preouts to power amp for speakers, and will have another set of preouts to sub/s. Now alot of this can also be done in software if you want to apply a correction to the whole system via your Macbook pro. What software do you use? Can it do convolution? Quote Link to post Share on other sites
Bush thug 39 Posted September 10 Author Share Posted September 10 tidal, itunes and plex on my mac abrahamsen v30 pre 2 x abrahamsen v40 power amps focal 826w 30th anniversary not really that keen to get rid of the dac audiophillio and pre. i love how the speakers sound i have got the sub pretty well dialled in as well i just think it could do a little better. but if i do get a mini dsp i will try it out as a standalone unit just to see because i dont mind tinkering. but not my main goal here. i have the sub connected via hi level speaker inputs at the moment because i have an AV receiver plugged in as well. the rythmik sub i have is an older one with the 370peq2 amp that doesn't have the lfe input as well as the line level input. i am currently building a cinema room so it will just be dedicated hifi in coming months. so after that happens i will be able to use both the line level inputs for the sub. i do have one line level input spare tho could possible connect the dsp to that if no speaker option. thanks steve Quote Link to post Share on other sites
spamnoj 289 Posted September 10 Share Posted September 10 5 hours ago, Bush thug said: Sweet just ordered a umik so wait till that gets here and I will start to play around. Is the software going to be easy to understand or should i do some reading. If so has anyone got a good link that is easy to understand on using the wizard. Thanks again I love this site All I did was watch some youtube videos on how to set it up, very easy to follow Using miniDSP + measurements from the UMIK for sub integration, now perfectly blended. My sub has all the fancy PEQ stuff but prefer to do it via miniDSP Quote Link to post Share on other sites
Bush thug 39 Posted September 10 Author Share Posted September 10 great thanks. and what mini dsp did you get. thanks steve Quote Link to post Share on other sites
spamnoj 289 Posted September 10 Share Posted September 10 For sub integration I'm just using standard 2x4 miniDSP, don't think you get significant benefits in going up to a HD if it's just dealing with the low frequency region. Others may disagree though! Quote Link to post Share on other sites
Sub Sonic 1,053 Posted September 10 Share Posted September 10 7 hours ago, Bush thug said: I have the f12 as well I just got it but the dampening switch is busted. Does that make much of s difference is it worth getting fixed. I do have a Mic from my marantz would that work. Thanks heaps for the info If you are going the DSP route you may not need to have the switch fixed, as damping is frequency response related, not something that somehow “magically improves“ bass. Having said that, I’d get the switch fixed so that the option to select it is there. I have 2 Rythmik subs, I love them. Cheers, SS Quote Link to post Share on other sites
Bush thug 39 Posted September 12 Author Share Posted September 12 trying to calibrate my soundcard a srcarlett 2i2 and theseare the mesurements is this ok cause it looks like it rolls of the frequencys pretty early Quote Link to post Share on other sites
Bush thug 39 Posted September 12 Author Share Posted September 12 and this is just using my macbooks onboard sound card Quote Link to post Share on other sites
Bush thug 39 Posted September 12 Author Share Posted September 12 ok sussed it i think after changing cables usb ports and then grabbing my studio mac it seems it was my hifi mac that has issues. now that being said i wonder what that is doing to my dac if it is to do with the usb port Quote Link to post Share on other sites
Bush thug 39 Posted September 12 Author Share Posted September 12 (edited) measurements with new mac left speaker right speaker subwoofer Edited September 12 by Bush thug Quote Link to post Share on other sites
Bush thug 39 Posted September 12 Author Share Posted September 12 (edited) t Edited September 12 by Bush thug Quote Link to post Share on other sites
AudioGeek 853 Posted September 12 Share Posted September 12 Scaling is really important. Need 5dB increments on Y axis, otherwise it looks smoother than it is. Take about 6 sweeps of each speaker around the listening position and then average. First thing to work on is speaker and sub placement. @davewantsmoore can advise 1 Quote Link to post Share on other sites
Bush thug 39 Posted September 12 Author Share Posted September 12 (edited) ha ha ha well that changes thing dramatically thanks for the help much appreciated left speaker right speaker sub Edited September 13 by Bush thug Quote Link to post Share on other sites
jamiebosco 336 Posted September 13 Share Posted September 13 (edited) Have a good read of this guide https://www.avsforum.com/threads/simplified-rew-setup-and-use-usb-mic-hdmi-connection-including-measurement-techniques-and-how-to-interpret-graphs.1449924/page-28 For full range speaker sweeps I would limit the horizontal axis to 20Hz to 20kHz and (IMHO) use 1/6 Oct smoothing and the vertical axis from 50dB to 110dB which should give 5dB increments. For sub sweeps I would use something like 10Hz to 200Hz on the Horizontal axis and no smoothing. Sometimes you have to play with the resolution setting when saving the screenshots to maintain 5dB increments Evidently something is up with your dB levels (soundcard/ mic calibration?) , because measuring at 20-30dB would be well under the room's noise floor (unless you live in an anechoic chamber? lol) Here's an example of how to show your graphs, this is just how I do it, but will give you some ideas Fullrange measurement (dual subs + Center speaker crossed at 80Hz with 1/6 Oct smoothing Dual Subwoofer measurements, no smoothing Edited September 13 by jamiebosco 1 Quote Link to post Share on other sites
Bush thug 39 Posted September 13 Author Share Posted September 13 Thanks heaps I will have a read. Was struggling calibration of the mic. Couldn't find much info on setting up a non usb mic. 1 Quote Link to post Share on other sites
jamiebosco 336 Posted September 13 Share Posted September 13 7 minutes ago, Bush thug said: Thanks heaps I will have a read. Was struggling calibration of the mic. Couldn't find much info on setting up a non usb mic. All good mate, that guide has helped thousands of people setup REW Quote Link to post Share on other sites
davewantsmoore 6,468 Posted September 13 Share Posted September 13 2 hours ago, jamiebosco said: Evidently something is up with your dB levels (soundcard/ mic calibration?) , because measuring at 20-30dB No necessarily an issue.... it just means he hasn't calibrated his mic to an absolute SPL level. 1 Quote Link to post Share on other sites
davewantsmoore 6,468 Posted September 13 Share Posted September 13 On 09/09/2020 at 9:26 PM, Bush thug said: Hi I was wondering what I have to do to set up the parametric e.g. right on the rythmik subwoofer. Looks like you've figured it out now.... althogh you'd really want EQ on both the mains and sub. It would be a better solution to move the speakers and/or listening postition.... but appreciate thats not always practical for people Quote Link to post Share on other sites
jamiebosco 336 Posted September 13 Share Posted September 13 14 minutes ago, davewantsmoore said: No necessarily an issue.... it just means he hasn't calibrated his mic to an absolute SPL level. Agreed, was just pointing out that the dB levels were off Quote Link to post Share on other sites
Bush thug 39 Posted September 13 Author Share Posted September 13 Yeah not much room for movement on the listening area or speakers. Have ordered a minidsp 2x4 hd for the sub. How would you eq the mains. Quote Link to post Share on other sites
Bush thug 39 Posted September 13 Author Share Posted September 13 how are these 6 measurements taken on each then averaged out 1/6 smoothing with 5db increments left speaker average right speaker average sub average no peq in lfe mode Quote Link to post Share on other sites
davewantsmoore 6,468 Posted September 13 Share Posted September 13 (edited) 20 minutes ago, Bush thug said: how are these 6 measurements taken on each then averaged out 1/6 smoothing with 5db increments Hard to say.... In very general terms, I'd say the sub level is 5dB too low... and you have a big lump at 60Hz. You either have a lump at 10khz (unusual) or you have holes at in the lowmids and at 2-3khz (more likely, and not necessarily a big issue, as it's just "how you're measuring" rather than a problem you should solve) .... if it's the later, then the sub level is at least 5dB too low. Edited September 13 by davewantsmoore Quote Link to post Share on other sites
Bush thug 39 Posted September 13 Author Share Posted September 13 (edited) 7 minutes ago, davewantsmoore said: Hard to say.... In very general terms, I'd say the sub level is 5dB too low... and you have a big lump at 60Hz. You either have a lump at 10khz (unusual) or you have holes at in the lowmids and at 2-3khz (more likely, and not necessarily a big issue, as it's just "how you're measuring" rather than a problem you should solve) .... if it's the later, then the sub level is at least 5dB too low. I should turn the sub up 5db. If I go up any more I think the house will explode ha ha. Thanks for your time i measured at listening position then about 30cm each side and in front and back Edited September 13 by Bush thug Quote Link to post Share on other sites
sfdoddsy 222 Posted September 18 Share Posted September 18 (edited) Returning to the Rythmik EQ, the easiest way is to use the mic in your phone with a free RTA or FFT app. They are usually calibrated to take into account the vagaries of the phone mic. You should be able to identify the biggest mode (in the case above the one at 60hz) and pull that down. Then you run your Room EQ. Edited September 18 by sfdoddsy Quote Link to post Share on other sites
Bush thug 39 Posted September 21 Author Share Posted September 21 Great thanks I will give that a hoon Quote Link to post Share on other sites
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