roy allison's findings
- jayman67
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roy allison's findings
ive just been reading his findings here http://www.classicspeakerpages.net/libr ... ious-photo
i dont pretend to understand it all but find it very interesting reading.
i dont pretend to understand it all but find it very interesting reading.
Yamaha NS1000M speakers,Pioneer PLC-590 turntable,,Alphason HR-100S-MCS/Zeta tonearms,Denon 103sa cartridge ,Sony 700ES Amp,Sony X555ES CD Player, Nakamichi ca5 pre amp.
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Re: roy allison's findings
Yes indeed, good paper. Figure 16 on page 7 was close to what became the Allison One speaker. This kind of thinking as promoted by DBH has transformed my own understanding of loudspeakers and their environment. I knew room acoustics were important before, but the idea of speakers working with the room rather than against it was something of a 'light bulb' moment. In fact, the more I think about it, the more I wonder why the market is so dominated by 'traditional' designs. The industry does seem incredibly conservative in the speaker department.
- SteveTheShadow
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Re: roy allison's findings
It starts at an early age. Ask a kid to draw a train and most of them will draw a steam engine. Ask them to draw a speaker and it certainly won't be an semi-omni.Simon Hickie wrote: ↑Thu Sep 21, 2017 11:07 pmThe industry does seem incredibly conservative in the speaker department.
Somebody’s telling me the latest scandals.
Somebody’s stepping on my plastic sandals. Joe Jackson (1979)
Somebody’s stepping on my plastic sandals. Joe Jackson (1979)
- Dr Bunsen Honeydew
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- CN211276
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Re: roy allison's findings
After being blown away by the Cube 3s I have been pondering why "traditional" designs dominate. I think it could partly because more power is required when a driver is pointed at the ceiling to achieve a given volume. Also, point and squirt might come over more impressive at a dealer.
After advertising my previous speakers on PFM I received a PM enquiring as to what I replaced them with. If I had not replied by PM I'm sure it would have been deleted. Word is getting round.
After advertising my previous speakers on PFM I received a PM enquiring as to what I replaced them with. If I had not replied by PM I'm sure it would have been deleted. Word is getting round.
Main System
NVA BMU, P90SA/A80s (latest spec), Cube 1s, TIS, TISC(LS7)
Sonore OpticalRendu, Chord Mscaler & Qutest, Sbooster PSs
Network Acoustics Eno, ifi iPurifier3, AQ JB FMJ, Cisco 2940 & 2960
DH Labs ethernet, BNC & USB cables, Lindy cat 6 US ethernet cable
Second System
NVA P20/ A20, Cubettes, LS3, SSP, SC
Sonore MicroRendu, Chord Mojo 2 MCRU PSs, AQ Carbon USB cable & JB FMJ
Headphones
Grado SR325e/Chord Mojo, Beyerdynamic Avetho/AQ DF Colbat
RIP Doc
NVA BMU, P90SA/A80s (latest spec), Cube 1s, TIS, TISC(LS7)
Sonore OpticalRendu, Chord Mscaler & Qutest, Sbooster PSs
Network Acoustics Eno, ifi iPurifier3, AQ JB FMJ, Cisco 2940 & 2960
DH Labs ethernet, BNC & USB cables, Lindy cat 6 US ethernet cable
Second System
NVA P20/ A20, Cubettes, LS3, SSP, SC
Sonore MicroRendu, Chord Mojo 2 MCRU PSs, AQ Carbon USB cable & JB FMJ
Headphones
Grado SR325e/Chord Mojo, Beyerdynamic Avetho/AQ DF Colbat
RIP Doc
- karatestu
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Re: roy allison's findings
Well my home made / doc mod 3 way (as cube 3 plus 12" woofer) are a revelation for me. They sound MASSIVE and are easily driven to loud levels with a 25W AP20 which has only a 100VA transformer. I do have the volume pot around further than when using point & squirt but not much further. I think the ap20 was getting hotter when driving a doc modded pair of MS902S (point & squirt).CN211276 wrote: ↑Fri Sep 22, 2017 3:35 pm After being blown away by the Cube 3s I have been pondering why "traditional" designs dominate. I think it could partly because more power is required when a driver is pointed at the ceiling to achieve a given volume. Also, point and squirt might come over more impressive at a dealer.
After advertising my previous speakers on PFM I received a PM enquiring as to what I replaced them with. If I had not replied by PM I'm sure it would have been deleted. Word is getting round.
Sheep follow sheep and marketing . I do hope semi Omni becomes more popular, its where its at baby. Shahinian speakers seem quite popular on PFM but I think they are fully Omni directional.
DIY FREE ZONE
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Re: roy allison's findings
Perhaps it's because they sound good (I'm yet to experience it myself & rely on others on this forum) at a modest price point, meaning that there's less room for product differentiation amongst manufacturers or for very expensive speakers with relatively low value components.
- Ithilstone
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Re: roy allison's findings
karatestu - Even better as AP20 has only 80VA transformer (unless your one is special;] )
Nothing to see here...
I am in the hi-fi trade
Status: Manufacturer
Company Name: NVA Hi-Fi
https://nvahifi.co.uk/
I am in the hi-fi trade
Status: Manufacturer
Company Name: NVA Hi-Fi
https://nvahifi.co.uk/
- karatestu
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Re: roy allison's findings
Nothing special about mine. I just wrote what i read on the ebay listing. Maybe i read the wrong one ?
DIY FREE ZONE
- Ithilstone
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Re: roy allison's findings
from eBay
NVA AP20 Specifications:
Power Output - 25w per channel
Power Supply - 80va
You just made me check it again as I also have AP20 ;] and was quoting 80VA from memory
NVA AP20 Specifications:
Power Output - 25w per channel
Power Supply - 80va
You just made me check it again as I also have AP20 ;] and was quoting 80VA from memory
Nothing to see here...
I am in the hi-fi trade
Status: Manufacturer
Company Name: NVA Hi-Fi
https://nvahifi.co.uk/
I am in the hi-fi trade
Status: Manufacturer
Company Name: NVA Hi-Fi
https://nvahifi.co.uk/