No-one can answer that without the /missing info. Id suggest contacting susvara to ask them.how loud will pa5 drive the hifiman susvara, the actual sensitivity is 79 db/ unknown 1 vrms or not
No-one can answer that without the /missing info. Id suggest contacting susvara to ask them.how loud will pa5 drive the hifiman susvara, the actual sensitivity is 79 db/ unknown 1 vrms or not
Why would you want to use a PA5 speaker amp for 60Ω/84dB headphones?how loud will pa5 drive the hifiman susvara, the actual sensitivity is 79 db/ unknown 1 vrms or not
Here is the Susvara's sensitivity and efficiency as claimed by Hifiman and measured by 3rd parties:how loud will pa5 drive the hifiman susvara, the actual sensitivity is 79 db/ unknown 1 vrms or not
Do some Amps become unstable as you decrease the load?It is also unknown whether PA5 operates stably with a load impedance of 60Ω.
Why would you want to use a PA5 speaker amp for 60Ω/84dB headphones?
For headphones, I suggest using a dedicated headphone amplifier.
Most headphone amps just don't have enough power for certain planars. My Topping A30 Pro struggles a lot with my Aeon Noire and Susvaras need even more juiceWhy would you want to use a PA5 speaker amp for 60Ω/84dB headphones?
You also need to know your distance from the speakers, and distance from speakers to nearby reflecting surfaces. Here is an online estimator: http://myhometheater.homestead.com/splcalculator.html Note the SPL chart lower on the page; 80 dB average is very loud to me, so I am quite content with being able to produce 100 dB SPL peaks at the listening position (20 dB headroom over louder than I am likely to listen).how loud will pa5 drive the hifiman susvara, the actual sensitivity is 79 db/ unknown 1 vrms or not
Probably 1cm because it's a HEADPHONEYou also need to know your distance from the speakers, and distance from speakers to nearby reflecting surfaces. Here is an online estimator: http://myhometheater.homestead.com/splcalculator.html Note the SPL chart lower on the page; 80 dB average is very loud to me, so I am quite content with being able to produce 100 dB SPL peaks at the listening position (20 dB headroom over louder than I am likely to listen).
HTH - Don
@DonH56 needs to drink that coffee..Probably 1cm because it's a HEADPHONE
No problem. Susvara is a 6000 € planar headphone that's so inefficient that most people just use speaker amps to power themOops... I did not read far enough, nor look up what a "hifiman susvara" is, duh. I also seem to have skipped the last page of the thread, the Wonders of Chrome. What I get for posting in the middle of running tests at 6 am (and I've been here a while already, long week). I don't drink coffee but maybe I should...
Thanks and sorry guys, hope I gave you a laugh - Don
Why would you want to use a PA5 speaker amp for 60Ω/84dB headphones?
Hi Daniboun, could you list this exact DC filter used in PSU, and may be other components for whole assembly, please?Hi Amigos,
Just finished to mount the New Active PFC PSU A-DP 400. By testing it I made a great discovery, in any case it is observable at home!
I first set the A-DP 400 @ 40V / 10A, The PA5 simply refused to switch on, like it was going into protected mode
Then I gradually lowered the voltage, and @ 36V it starts ) This makes me say that the PA5 has a protection tuned by topping to avoid tweaking its nominal voltage.... I reproduced the scenario several times and I can therefore confirm this test with a multimeter measurement.
Now concerning the sound, I'm in the test phase and I'm going to listen to it with my Playlist at different volume levels, to see which of the two PSUs sounds better. As reminder :
Connex SMPS 300RS LLC @ 36V / 8,3A VS A-DP 400 Active PFC @ 36V / 11A
The Connex SMPS300RS use state of the art, very efficient LLC Series Resonant Converter Topology. Due to the soft-switched topology used, the SMPS300RS has very low EMI noise and also has a very low ripple.
The A-DP 400 has an active PFC controller for an high efficiency, PF value greater than 0.98, and its Output ripple is less than 150mV.
I mounted both PSUs with a DC blocker and good quality cables.
Vast majority of happy owners don't bother to vote.4 out of 10 of them have issues
The product has a fault that apparently occurs with regularity.I live in a duplex where I rarely listen to speakers. I probably listen at moderate levels (5 watt max) maybe 3 hours a week at most.. are the issues mainly for people that put in 10+ hours a day at loud 20+ watt levels? Or is it just a lottery that 4 out of 10 of them have issues?
Note: I'd have the volume of the PA5 at max, but use a preamp plugged into it would be 5 watt max.
Have you got some information to estimate statistics? "Regularity" means nothing. All products faults have got some regularity.regularity
Oh come on... Anybody that's been around here regularly for several months or more knows what has occurred. Topping messed up some product somehow and they shipped it to customers for warranty processing.Have you got some information to estimate statistics? "Regularity" means nothing. All products faults have got some regularity.