Initial Questions from New D200 Owner... - Printable Version +- Devialet Chat (https://devialetchat.com) +-- Forum: Devialet Chat (https://devialetchat.com/Forum-Devialet-Chat) +--- Forum: Devialet D-Premier, Expert 120/200/250, Expert 140/220/250 Pro (https://devialetchat.com/Forum-Devialet-D-Premier-Expert-120-200-250-Expert-140-220-250-Pro) +--- Thread: Initial Questions from New D200 Owner... (/Thread-Initial-Questions-from-New-D200-Owner) |
RE: Initial Questions from New D200 Owner... - Clark - 07-Apr-2015 By way of a follow up to my previous question on subwoofer setup: I tried using a lowpass filter for my sub (60Hz) and a corresponding high pass filter for the main speakers (also 60Hz). Based on my reading, I was expecting this set up to eliminate the overlap between speakers and sub below 60Hz and hence provide a neat integration (and reduce the load on the D200 and speakers). I was very surprised that this set up generates a (much) stronger bass compared to the same setting but without the high pass filter, i.e. with the main speakers receiving a full signal and hence with both speakers and subwoofer operating below 60Hz. This is exactly the opposite of what I was expecting. Clearly I am not understanding something ! Any ideas? RE: Initial Questions from New D200 Owner... - thumb5 - 07-Apr-2015 Could it be that your speakers and sub are effectively out of phase at some low frequency, so when both are full-range the effect is a cancellation at that frequency? I had a similar problem and concluded that was the reason; at least, I got a flatter measured (in-room) response by changing the input polarity on my sub. RE: Initial Questions from New D200 Owner... - Clark - 07-Apr-2015 The Piega sub does have a phase switch and I believe I originally selected the position that maximised bass for the main speaker settings on full-range, i.e. minimising any cancellation effects. But your point makes sense so I will check this again and perhaps also play with the phase dial. RE: Initial Questions from New D200 Owner... - bobertk - 07-Apr-2015 (19-Mar-2015, 10:37)Clark Wrote: I have recently acquired a D200 and am new to this site. Actually I have been a very interested reader for some time whilst I was deliberating and so thanks to all the organisers and posters for the very useful info.Others may have answered this already but iphone makes a fine remote. I'd like to see one for mac and windows OS's too. RE: Initial Questions from New D200 Owner... - ErikM - 29-Apr-2015 I've had my 200 since last September.. There's no question it breaks in. When I first got it it was replacing an Ayon tube amp and PS Audio Dac.. I think it was around the 300 hour mark that I really felt I'd made the right decision.. And I've found that it's continued to get smoother.. Also the Devialet's definitely respond to power cord upgrades and good power line conditioning. RE: Initial Questions from New D200 Owner... - Antoine - 01-May-2015 (07-Apr-2015, 13:14)thumb5 Wrote: Could it be that your speakers and sub are effectively out of phase at some low frequency, so when both are full-range the effect is a cancellation at that frequency? Yep, that's the only valid explanation. RE: Initial Questions from New D200 Owner... - f1eng - 02-May-2015 if you set the same turnover frequency for both mains and sub you will get a peak at that frequency since both will be reproducing the same music at the same time. It is the wrong thing to do, in either an active or passive crossover. Depending on the slope of filter you choose the bass needs to roll of at a lower frequency and the mains at a higher, such that the sum of the two is equal at your chosen crossover frequency. RE: Initial Questions from New D200 Owner... - Clark - 05-May-2015 (07-Apr-2015, 13:14)thumb5 Wrote: Could it be that your speakers and sub are effectively out of phase at some low frequency, so when both are full-range the effect is a cancellation at that frequency? (02-May-2015, 13:32)f1eng Wrote: if you set the same turnover frequency for both mains and sub you will get a peak at that frequency since both will be reproducing the same music at the same time. It is the wrong thing to do, in either an active or passive crossover. This makes logical sense, thanks for the input. I guess trial and error is in order in the absence of measuring equipment. Any idea what “typical” values might be for the sub and mains for a smooth transition? (according to a spec sheet, the frequency response on the mains seems to drop at around 50Hz). At the moment I have set both at 60Hz - generally sounds ok but the bass is perhaps a little prominent so this is the presumably the effect you are referring to... |