Thanks and i think you have put the finger on a very important parameter Distortion I see distortion figures almost never on the driver specifications
And i really wonder why because at least for me is the deciding factor after FR I think to know why Because a very low distortion is what separates good from mediocre drivers I am always looking for woofers not very expensive but with very low distortion
I have seen very expensive small 2 way showing unaccepatable distortion levels below 100Hz at only 90dB/1 meter ...
Imho a good 8" is the minimum for a decent bass And i prefer one big instead of two small like in almost all recent tower speakers I had one from System Audio with many 4" ... no real bass to speak of It is like a house without foundation
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Hi!
I have found out that distortion is an important factor - but more in the midrage. Therefore I would only use drivers with „symmetric drive“, means copper cladded motors. Scanspeak and SBA drivers with that sounds great, even compared to drivers with good cones (e.g. accuton ceramic), but standard motor.
Regards J-C
I have found out that distortion is an important factor - but more in the midrage. Therefore I would only use drivers with „symmetric drive“, means copper cladded motors. Scanspeak and SBA drivers with that sounds great, even compared to drivers with good cones (e.g. accuton ceramic), but standard motor.
Regards J-C
Morel seems hopelessly wedded to the concept of using a large 75 mm VC and putting the magnet motor inside it. It may have been a cool idea 35 years ago when Dynaudio and Morel first did it, but now the concept really limits the performance potential of the drivers.
8" is the minimum of good bass...
ive had Graham ls5/9, ref 3a decapo and Harbeth shl5+, notably some of the most praised 8" based 2 ways.
Their bass performance leaves a LOT to be desired.
15" is the minimum for good bass
if you use a 8" based speaker and want true hifi bass, forget about it. the only solution then would be to go via passive 1st order high pass line level to dual subs xo around 60hz
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40hz is for good bass ,not problem for a decent small woofer if you don have a loft
40hz?
big woofers has nothing to do with extension
Bass is 40hz to 160hz. and a big woofer make a small woofer between 40hz to 160hz sounds like a toy
I doubt this thread will make its way to the one of the stickies but if it does I’ll grab my coat.
If scanspeak thinks their 7" woofer is sufficient why do they make a 32W revelator?
well the story of SS is based on 18cm ,all you need in eu tipical room is 18w revelator plus a Nelson 25w class A...
why more 90% of world speakers dont have a 15" ?? x 32w is a recent y, size matter if you need go down 40like 30, or need low thd system on big room or kilowatt but you need a big box and 3way ,the lesson Purifi gjve is quite clear
,btw basshead young don't have limit Iknow well having buyed two beyma 15" 31y ago with 600w ...but I can tell you that this days I use for my pc an ss 15w rev. with 5W Acamini in a small 16m2 the low can stress my eardrum or shake windows ...quite incredible ,First Watt is really real things
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stop repeating what you heard elsewhere. Get some experience behind your belt with big woofer before sounding like a ignorant
7” woofer are toys. They cannot displace merely enough air. I dont care if its from scan speak or Volt or Seas.
the size of the room is irrelevant. Especially when we talk about a acoustically treated room
12” is bare min size woofer for hifi bass performance
Ive already addressed this
yes, small woofers can go lower then big woofers.
i dont want to offend you nick, my english also is not the best!
you do sound ignorant when you try to debate that small woofers are just as good as big woofers because of their F3.
you did just compare a 6" with a 12". so you argue that both, since they have similar distortion and F3 figures, will sound almost identical?
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No, they started with tweeters, SD-motor woofers came later
https://www.scan-speak.dk/scan-speak/about-us/
https://www.cfuttrup.com/history/scan-speak.html
And really - a 6.5" woofer with SS or classA amp means DISTORTION, and that makes it sound loud.
https://data-bass.com/#/?_k=w3n2xb
https://data-bass.com/#/articles/5cbf5e7357f7140004d6d0ec?_k=d26i40
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Is well know for is woofer the clear polyipropilene that ProAc use a lot...."It is during 1973 that Ragnar Lian invents and patents the Symmetric Drive (SD) motor, which consists of placement of copper caps on the polar part in order to minimize the currents of Foucault (eddy) currents. The idea of copper caps was already known previously, as Ragnar Lian sketches in his AES paper with a Philips driver. The new and patentable part is that the copper is located and dimensioned so that the inductance-variation of the driver coil position becomes symmetric around the rest position of the coil."
btw I haved buy my d2010 in 1988 this is what remains
yep sound is the same,can be find difference only in THD, for 40hz we dont need a 15" in eu size room ,no kilo db is neeted