If you're seeking more power for your speakers, I'm afraid I have to inform you that there won't be a significant difference. The increase is only around +2.5dB. Your speakers have a sensitivity of 91dB at 1 meter, and with the AVR amplifier providing an additional 19dB, you’re already achieving 110dB at 1 meter, which is quite substantial. To double the perceived volume (a +10dB increase), you would need to reach 120dB at 1 meter. To achieve that, you'd require an 800W amplifier, compared to the current 80W.
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Fosi Audio V3 Mono Amplifier Review
- Thread starter amirm
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And some ear defenders if they value their hearing
Thanks for the reply - all sounds good. Glad to hear positive experiences from people with (similar-ish) spec speakers.
Just did some reading and it seems the XLR outputs are pro-audio spec on the Pioneer mixer; capable of outputting high signals around (and above!) 5V - so I will have to make sure to keep an eye on that at parties, but by the sounds of it the V3 monos will be plenty loud - will happily report back on how effective they are for getting things going. If all goes to plan they'll be driving the Tannoys at a friend's wedding reception in under a month!
I'll order some decent length XLRs but yeah was planning on having the monos tucked away nicely too. Getting pretty excited to hear them now!
I'm not looking for particularly more power - the Arcam can drive the Tannoys pretty loud already...
My main issues with the AVR are it being awkward to move out of the living room/transport to other venues and suitably locate it at said party (safe from not-sober folk!)... Also, giving it enough space to prevent it from going into thermal protection can be a pain (which I think means I often hold back on pushing the full power envelope of the amp, so i'm probably rarely getting most of the power handling capability out of it anyway - perhaps my unit is generating mroe heat than it should do.... It also has no XLR/balanced inputs which are preferred when outputting audio from the Pioneer mixer.
Anyhow, yes, i'm well versed in the power requirements for proper party volume levels (I go to a fair few clubs/parties with huge multi-kw soundsystems) so i'm not expecting to break physics with these little V3 monos. But hoping they can put in a good shift for a relatively low cost!
What I find most interesting about your post, is the quality of the speakers you are bringing to these gigs!
It's in situations like this people lose their hearing!And some ear defenders if they value their hearing
Yes, it's kind of why I used the word 'punch'!
@harrym13 I would very much like to hear how you get on with those Tannoys and the Fosi v3 monos.
Whatever your mixer is outputting is key (and your mix).
Back in my (vinyl) day I suspect we would have been relying on something from Stanton! That's my world!
Post edit : to provide the "punch".
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A company develops a product that becomes popular, how do they produce tens of thousands of them? I am stupid about high volume production.
I am twentieth century and not equipped to comprehend twenty first century. I cannot comprehend how to produce fifty million Apple watches in a year. That seems an impossible task. It requires production of about 160,000 Apple watches each day. How do you even box 160,000 watches in one day? And as you are working on boxing today's 160,000 watches, have you completely dispatched yesterday's 160,000?
You people know these things. Explain it to me.
The Apple watch is by volume mostly the battery and the case, and then the electronic display on the visible surface. And there is a small amount of miniaturized electronic circuitry. It is largely, though, a battery and a metal case. There must be many, many, many suppliers across Asia. Moving the goods is an industry in itself. 50 million watches in one year. What a production problem.
So much for scale and realities of Apple watch production. A bigger question, how do you produce 230 million Apple phones each year. That requires producing over 700,000 each production day.
1.2 million people are employed by Foxconn that manufactures Apple phones. Apple I phone production is moving to or expanding to India from China. Clearly, armies of people are involved in mass production for products sold globally.
I am twentieth century and not equipped to comprehend twenty first century. I cannot comprehend how to produce fifty million Apple watches in a year. That seems an impossible task. It requires production of about 160,000 Apple watches each day. How do you even box 160,000 watches in one day? And as you are working on boxing today's 160,000 watches, have you completely dispatched yesterday's 160,000?
You people know these things. Explain it to me.
The Apple watch is by volume mostly the battery and the case, and then the electronic display on the visible surface. And there is a small amount of miniaturized electronic circuitry. It is largely, though, a battery and a metal case. There must be many, many, many suppliers across Asia. Moving the goods is an industry in itself. 50 million watches in one year. What a production problem.
So much for scale and realities of Apple watch production. A bigger question, how do you produce 230 million Apple phones each year. That requires producing over 700,000 each production day.
1.2 million people are employed by Foxconn that manufactures Apple phones. Apple I phone production is moving to or expanding to India from China. Clearly, armies of people are involved in mass production for products sold globally.
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I have a basic math question about power.
I got the 10 amp version and using with a Wiim Ultra into 4ohm speakers. The Wiim puts out 2Vrms and the Fosi has a ~2.4Vrms input sensitivity at 4ohm.
Amir measured the Fosi output at 4 ohms in the 230 Watts range. If I have the Wiim at full 100 / 2Vrms the Fosi should be delivering around (2/2.4)*240 or 200w? Is that approximately and conceptually right?
I got the 10 amp version and using with a Wiim Ultra into 4ohm speakers. The Wiim puts out 2Vrms and the Fosi has a ~2.4Vrms input sensitivity at 4ohm.
Amir measured the Fosi output at 4 ohms in the 230 Watts range. If I have the Wiim at full 100 / 2Vrms the Fosi should be delivering around (2/2.4)*240 or 200w? Is that approximately and conceptually right?
No, because power is proportional to the square of the voltage (P=V^2/R)
So you need (2^2)/(2.4^2) = 4 / 5.76 * 230W = 160W
Exactly - if you already have the gear, you can obviously try it. But I wouldn't spend much money for it.
The difference between 160W and 230W is only 1.6dB (Or approx 16% perceived volume increase)
Is the input sensitivity really above 2Vrms with RCA? I thought it was ~1.6Vrms.
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What is that gorgeous little gadget?I'm beginning to feel like your father (old) ... I can happily hit 80db ... but I'm surprised how much of my listening that I thought was loud, is actually down in the 70dbs.
View attachment 388671
I use one of these great little gadgets. Set it to max and you get a fixed value for the duration it is set to max.
Nobody talks about balance these days. Even digital recordings or broadcasts in digital can somehow get the balance wrong. Old ears (or indeed young) have imbalance.
Or whoever is in the studio handling the mix!
I wish whoever it is in the BBC studio doing the mix would get their ears tested for the sports commentary ...
Okay I appreciate that this is going to be lost on many here ... but the snooker commentary at the Crucible was much better this year ...
The "Today at the Test" cricket commentary (currently) is 1 to 1.5 db off to the right!
So what's the point of separate power supplies, and wonderful channel separation with monoblocks ... if you can't adjust the balance because someone can't hear properly in the mixing studio!
Or maybe it is just me...
It's a very cheap but effective little hand held db meter to let you know when you are listening too loud (or quieter than you think)!Run a search on ali express or elsewhere for "FY8862 Sound Level Meter" for the best price. Not expensive.
With regards to balance, as long as the vocalist in the vast majority of recordings is centered, I leave it alone. From a practical standpoint, I already find that a lot of recordings don't have balanced left/right sound primarily just because of studio/stage layout. You have a percussionist on the right side (stage left) and he's just banging out a rhythm nonstop, but then you have some other person on the opposite side of the stage hitting a triangle like 3 times in a song, and now your recording is heavily right-speaker loaded. This kind of recording imbalance is completely the norm for so many songs that I just let balance go now, like I said, so long as the vocalist remains dead center most of the time (the recordings where the lead singer is off-center really throw me!). Chesky Records has a system setup album with a stereo imaging test and that one is great for making sure your system is properly set up left/right balanced (especially useful for listening rooms that are not symmetrical, like mine).I'm beginning to feel like your father (old) ... I can happily hit 80db ... but I'm surprised how much of my listening that I thought was loud, is actually down in the 70dbs.
View attachment 388671
I use one of these great little gadgets. Set it to max and you get a fixed value for the duration it is set to max.
Nobody talks about balance these days. Even digital recordings or broadcasts in digital can somehow get the balance wrong. Old ears (or indeed young) have imbalance.
Or whoever is in the studio handling the mix!
I wish whoever it is in the BBC studio doing the mix would get their ears tested for the sports commentary ...
Okay I appreciate that this is going to be lost on many here ... but the snooker commentary at the Crucible was much better this year ...
The "Today at the Test" cricket commentary (currently) is 1 to 1.5 db off to the right!
So what's the point of separate power supplies, and wonderful channel separation with monoblocks ... if you can't adjust the balance because someone can't hear properly in the mixing studio!
Or maybe it is just me...
-Ed
For 230W into 4 ohm, you need 30V output from the amp.
Gain is 25.5dB (low setting) = x18.8, so 30V would need just under 1.6V, so you are correct - there is no power limitation with 2V into the amp.
Gain on XLR is 20.5, which would need 2.83 input volts for 230W, so I'm not sure where @Mort got the 2.4V requirement from.
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Apologies. I thought I got that from the reviews. I was more concerned about the formula in my question.
No need to apologise. I wasn't having a go. I only mentioned you so you would know you don't have an issue to worry about.
Hello all. New member here but have been reading along for a long time and I love ASR.
I'm planning to set up a system with two V3 monos and a WIIM Pro+ as a preamp. The auto mode of the V3 is of course great only ... I only want to use the system for a few hours a day and then maybe not even every day so power consumption at rest might be a bit high then. I thought how can I still get it more efficient and thought that maybe I could use the trigger out of the WIIM to switch a trigger powerstrip. I couldn't really find such a socket but is it at all a good idea to turn the V3 mono'on this way? Anybody any ideas on this?
einde bewerkbare sectie
he
Hallo allemaal. Nieuw lid hier, maar ik lees al een tijdje mee en ik hou van ASR.
Ik ben van plan om een systeem op te zetten met twee V3 mono's en een WIIM Pro+ als voorversterker. De automodus van de V3 is natuurlijk geweldig, maar ... Ik wil het systeem maar een paar uur per dag gebruiken en misschien zelfs niet elke dag, dus het stroomverbruik in rust kan dan wat hoog zijn. Ik dacht hoe kan ik het nog efficiënter krijgen en dacht dat ik misschien de trigger-uitgang van de WIIM kon gebruiken om een trigger-stekkerdoos te schakelen. Ik kon zo'n socket niet echt vinden, maar is het überhaupt een goed idee om de V3 mono op deze manier aan te zetten? Iemand ideeën hierover?
einde bewerkbare sectie
I'm planning to set up a system with two V3 monos and a WIIM Pro+ as a preamp. The auto mode of the V3 is of course great only ... I only want to use the system for a few hours a day and then maybe not even every day so power consumption at rest might be a bit high then. I thought how can I still get it more efficient and thought that maybe I could use the trigger out of the WIIM to switch a trigger powerstrip. I couldn't really find such a socket but is it at all a good idea to turn the V3 mono'on this way? Anybody any ideas on this?
einde bewerkbare sectie
he
Hallo allemaal. Nieuw lid hier, maar ik lees al een tijdje mee en ik hou van ASR.
Ik ben van plan om een systeem op te zetten met twee V3 mono's en een WIIM Pro+ als voorversterker. De automodus van de V3 is natuurlijk geweldig, maar ... Ik wil het systeem maar een paar uur per dag gebruiken en misschien zelfs niet elke dag, dus het stroomverbruik in rust kan dan wat hoog zijn. Ik dacht hoe kan ik het nog efficiënter krijgen en dacht dat ik misschien de trigger-uitgang van de WIIM kon gebruiken om een trigger-stekkerdoos te schakelen. Ik kon zo'n socket niet echt vinden, maar is het überhaupt een goed idee om de V3 mono op deze manier aan te zetten? Iemand ideeën hierover?
einde bewerkbare sectie
I turn all my gear on and off at least once a day using a wifi power socket. I just shout at Alexa to do it for me, no trigger interface required. If I had v3 Monos, I'd do the same with them.
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