Recent content by Musician

Ah, so you have measured that in the vibelink ? Thruth is you do loose some power when using PFFB. Lowest distortion without PFFB with a single tpa3255 is at 34V according to some measurements done at diyforum.

Agree. Also, very important is the correct setup for your speakers in your room. The best sounding distance from the frontwall, the best sounding distance between your speakers, the listening position and so on… this is way more important than any room correction program.

Looks like 42 V then , if one reads the data spec for a single BTL 3255. They may be using good coils at the output , not saturating at higher power.

I often recommend 300 Hz from listening position. But it all depends how they have done the correction program . In my case the sound got better with 10 kHz , to my surprise . I have a symmetrical loudspeaker setup by the way . The max value of Q =2,5 and smoothing = 1/3 is not accurate...

Yes, the 19+20 kHz test is one of the best with tpa3255 , much better than Fosi audio V3 mono. Makes me wonder if this amp in reality is a dual mono PFFB with tpa3251, driven at 36-38 V ?

Try plugging the port on your OA2212. If you use the crossovers for HP and LP inside the WiiM ultra, you must bypass the inbuilt crossover in the XTZ sub. Perfect integration is not easy to do, regardless of what people say . Its always the acoustical slopes that matters ( not the electrical )...

Try upper limit to 10 KHz, max Q=6 , gain=10, smoothing 1/6, Harman target, one single sweep for both speakers from listening position, -it might sound even better. You also need some boosting below 100 Hz to not sound unnatural. I first do the room correction, then go in manually and use...

I have a Dayton imm6 ( without calibration ) and a Line audio om1 with Audientid14 ( flat within +-1 dB 20-20 KHz ), and the measurements are very similar from both microphones. I think WiiM is constantly improving their room correction so its best to try new corrections AND using wider...

No , you need a Wiim pro , pro+ or WiiM amp for the surround channels . I use Ultra with Ethernet as master , and the Wiim pro wireless for both surround speakers

20-300 Hz will be fine measuring from listening position. 300-20000 Hz has to be measured from a short distance of 70cm-1m from each L and R speaker to not give false measurement results, because of the precedence effect. Use a microphone stand for the measurements. One can just use 20-300 Hz...

This thread might interest you - lower group delay . https://forum.wiimhome.com/threads/using-high-q-shelving-to-gain-10-hz-in-the-bass-without-severe-drawbacks.3494/ About this thread - Everything is a trade off . You have to decide if a highpass filter makes the sound better or not, with your...

Yes, this is the best way to do it. Dont loose money though buying expensive class A/B amps without the option of sending it back.

Tpa3255 or 3251 sounds better than all of those, if good implemented. Cleaner, clearer , more dynamic and more detail. Linn products uses this chips in their Selekt range, because it sounds better. Tpa3255 in good implementation sounds slightly better than hypex ncore by the way ( I have both...

Im sure its for marketing reason there is a dac and volume control . I would have liked this power amp to have no dac, no volume control and two fixed gain switches at the back, at 26 dB and 18 dB . A simple voltage divider using soldered resistors is better sounding than any volume pot. That...

If the tuning frequency is 35 Hz on your speaker, set the highpassfilter ( at subwoofer meny ) at 35 Hz . You can also try anything between 20-35 Hz and use the best sounding option.