FFA 10K vs Void Infinite 8 MK2
Printed From: Speakerplans.com
Category: Plans
Forum Name: Scoops
Forum Description: One scoop or two ;-)
URL: https://forum.speakerplans.com/forum_posts.asp?TID=107206
Printed Date: 27 March 2026 at 5:14am
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com
Topic: FFA 10K vs Void Infinite 8 MK2
Posted By: levyte357-
Subject: FFA 10K vs Void Infinite 8 MK2
Date Posted: 14 July 2022 at 11:46am
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Void 8Mk2 amps, are rarer than Rocking horse poo, these days, so may need to consider FFA 10K instead. Requesting feedback from people, who have used this amp, on systems playing Roots Reggae/Dub with Scoops. Had bought PL380s for this purpose, but they are mains thirsty, and K20 is beyond budget for just 4x cabs. ------------- Global Depopulation - Alive and Killing. |
Replies:
Posted By: teeth
Date Posted: 14 July 2022 at 8:05pm
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no opinion as i've not used them but i'm selling a pair of FFA 10k's - pm me if interested
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Posted By: luton_soundman
Date Posted: 21 July 2022 at 3:59pm
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Played ffa 10k on 4 Ligwa minis fane col 1000 loaded (not xbs) and was dropping nice. Heard injection with 50 loaded rx18s on the ffa10k and was pressure, sounded very solid. Thinking of getting 1 myself as ive had the pl380 previously. ------------- Sound Hire/Sales new/used equipment. |
Posted By: levyte357-
Date Posted: 21 July 2022 at 4:18pm
This is why I started this thread here.. That kinda feedback..  ------------- Global Depopulation - Alive and Killing. |
luton_soundman wrote:Posted By: luton_soundman
Date Posted: 21 July 2022 at 4:31pm
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Once i load my 1200i's i'll arrange to test 1 i think. We've both seen them running 8 drivers even off of 13a plug so we know they're stable at low impedances, and they did bench very well. (Which isnt real world but still) ------------- Sound Hire/Sales new/used equipment. |
Posted By: Aurora
Date Posted: 21 July 2022 at 11:13pm
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I heard an FFA 10k powering 6x PD1851 scoops three per side, it did the job but sounded a bit...dry in the tone department, switched over to a JTS UA6 and it sounded a lot more grunty and warm sounding, this was off a single 16amp socket. N.B I own an inf8 mk2 and run four fane XB loaded scoops off it and it sounds fantastic, have to be careful with the power though as it can be quite easy to blow XB's with too much power.
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Posted By: levyte357-
Date Posted: 22 July 2022 at 12:07am
Powersoft K20, powering 4x PD1852s, watch current meter. EDIT:Big Transformer amps like JTS UA6/Crest 9001, have piles and piles of smoothing caps, to ease strain on mains, during heavy bass notes, but then, depending on sophistication of the inrush current limiting, you are more likely to take out breaker on switch on, if your power source is humble domestic ring main. Obviously, Rog did sterling job on Inf8 MK2, as it does great job powered off Consumer ring main/13A plug, and ever better on proper power. To get full performance from Big Lightweight, you need proper 3 phase mains.
------------- Global Depopulation - Alive and Killing. |
Posted By: luton_soundman
Date Posted: 22 July 2022 at 7:47pm
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The characteristics of a torroidal cant be matched with smps but at the same time there are a gd few lightweights that still sound great when used with a decent preamp. ------------- Sound Hire/Sales new/used equipment. |
Posted By: kickdust
Date Posted: 29 July 2022 at 2:31am
| 3 phase... To run amplifiers... You guys got to be kidding me |
Posted By: csg
Date Posted: 29 July 2022 at 6:56am
Why? I’d much rather carry around a 32A 3 phase cable than 3 runs of 32A single or even 63A single. Much lighter, much more efficient…. ------------- “The fact is this is about identifying what we do best and finding more ways of doing less of it better” |
Posted By: csg
Date Posted: 29 July 2022 at 7:10am
What you really want is PFC. This can reduce power requirements by 30% making considerable differences when running on smaller than ideal supplies. With the exception of X series Powersoft which are designed to sit across all 3 phases, the only advantage of 3 phase is in terms of power distribution efficiency, not amplifier capability. Any supply sufficiently large not to experience voltage drop or over current protection will yeald the same audio results. ------------- “The fact is this is about identifying what we do best and finding more ways of doing less of it better” |
Posted By: fatfreddiescat
Date Posted: 29 July 2022 at 8:59am
Seems not everybody is a fan of PFC: https://linea-research.co.uk/wp-content/uploads/LR%20Download%20Assets/Tech%20Docs/PFC%20-%20Lineas%20position%20-01a.pdf" rel="nofollow - https://linea-research.co.uk/wp-content/uploads/LR%20Download%20Assets/Tech%20Docs/PFC%20-%20Lineas%20position%20-01a.pdf
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Posted By: toastyghost
Date Posted: 29 July 2022 at 9:36am
Worth noting that in independent tests, two equivalent 4-channel amps with PFC achieved higher output levels (by up to 1000W) at higher efficiency ratings with music-like signals (12dB CF noise & multi-tone bursts). The Linea did the best in the 10-second sine wave comparisons, by up to 360W or 1.96dB more output. This is all with 4x4 Ohm nominal loading. This might also be interesting (Linea first):    For reference, I dug out a rare test of a modern Class H amplifier (Dynacord L3600FD):  The Dynacord is only 2-channel, but puts out the most on the sine wave 10-second test at 1225W. It does however only have a maximum of 600W of 'headroom' for the multi-tone tests and the music signal (12dB CF) tests. That's <1.7dB of dynamic range if you push the amp super hard. Bear in mind that due to not having PFC, the Linea M series also doesn’t work on any input voltage mains supply. Instead it has two power supply settings, for either 110V or 220V that it auto-selects on power up. |
Posted By: kipman725
Date Posted: 29 July 2022 at 1:06pm
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wow I didn't know that about Linea amps, I just assumed they had PFC, they are correct that power factor near maximum load is most important. Their document is a over simplified though! PFC is most critical in provisioning of generators, if you have perfect sinusoidal and in phase with the voltage current draw you don't need to over-provision. A classical PFC stage however has generates a fair bit of current distortion even if it has 0.99 Pf, this can cause conducted emmisions test failure. I have actually worked on 100kw+ power 3 phase PFC and it's non trivial, actual implementation required an SOC FPGA just to do the required control. Its probably beyond the budget audio amplifiers. If you do it properly however performance is sensational: https://www.ti.com/lit/ug/tiducj0b/tiducj0b.pdf " rel="nofollow - https://www.ti.com/lit/ug/tiducj0b/tiducj0b.pdf ; Does anyone know what type of power supply the Powersoft X8 uses? |
Posted By: levyte357-
Date Posted: 29 July 2022 at 1:14pm
I meant using single phase of a 3PH supply, as opposed to depending on a 32A consumer ring main. ------------- Global Depopulation - Alive and Killing. |
Posted By: fatfreddiescat
Date Posted: 29 July 2022 at 8:14pm
This link has more info on the PSU in the X8 on page 15, still nothing on what type with regards resonant etc: https://www.niehoff.nl/productfolder/X8%20DSP+ETH-03.pdf" rel="nofollow - https://www.niehoff.nl/productfolder/X8%20DSP+ETH-03.pdf Also, what do you make of their concerns re PFC, (I guess it may come down to the 'the proof of the pudding is in the eating') taken from their 'white paper'?: 'The issue When talking about amplifiers, striving for a unity power factor is not the whole story. Modern power factor correctors can achieve a very good PF figure, often better than 0.9 but they can only do this if their load is more or less constant. To think of this another way, the PFC must continually adjust the shape and timing of the current draw to be the same as the mains voltage which is more or less a sine-wave. If the load is constant this is not too much of a problem. However if the load, in this case an amplifier responding to an audio signal suddenly demands more power, the PFC has two choices : • Ignore the power demand, keep the current waveform pure and maintain the PF close to unity. BUT this means that the amplifier may be starved of the current required and the audio may suffer. • Increase the current draw to meet the demand. BUT this means that the PF will be compromised until the PFC has adjusted itself, which can take tens of milliseconds. In practice the design of the PFC will have to be a compromise between these two conflicting requirements which means that it will not perform as effectively when the amplifier is fed with program material as it does when fed from a stable pink noise or sine-wave test signal. Of course it is almost certain that stable test signals were are used to create the PF number for the products’ specification sheet.' |
Posted By: fatfreddiescat
Date Posted: 29 July 2022 at 9:01pm
Any chance you could post the links to where those graphs came from, looks interesting :) |
Posted By: toastyghost
Date Posted: 30 July 2022 at 10:21pm
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They’re screenshots from my subscription to Production Partner magazine. Some of their content gets posted online: https://www.production-partner.de/" rel="nofollow - https://www.production-partner.de/ |
Posted By: fatfreddiescat
Date Posted: 31 July 2022 at 10:40am
Thanks :)
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Posted By: levyte357-
Date Posted: 31 July 2022 at 4:48pm
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So if we could kindly bring a halt to the thread jacking, and return to the topic title, regarding FFA 10 & Infinite 8 MK2 amps. ------------- Global Depopulation - Alive and Killing. |
Posted By: fatfreddiescat
Date Posted: 31 July 2022 at 6:21pm
| Friends of mine replaced their Infinate 8's with 10K's and no complaints so far. |
Posted By: levyte357-
Date Posted: 06 August 2022 at 8:37pm
Guy on FB selling FFA10, to get Void 8MK2.. ------------- Global Depopulation - Alive and Killing. |
Posted By: luton_soundman
Date Posted: 07 August 2022 at 9:35am
Tbf i was using the inf8 v2 for years as you know and heard but im thinking of going ffa10k. Will still probably keep a big torroidal for special occasions... ------------- Sound Hire/Sales new/used equipment. |
Posted By: fatfreddiescat
Date Posted: 07 August 2022 at 9:52am
and the amp merry go round continues. |
Posted By: luton_soundman
Date Posted: 07 August 2022 at 10:27am
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------------- Sound Hire/Sales new/used equipment. |
Posted By: goodgroove1960
Date Posted: 07 August 2022 at 1:40pm
| Alot of this is down to Personal taste. |