Unfortunately it also soundsMore like making of a real scale model with real finish and I even believe that drivers look the same
Unfortunately it also soundsMore like making of a real scale model with real finish and I even believe that drivers look the same
Good consumer information about this with the impedance.View attachment 328969
Minimum impedance of just 1.7 ohm??? Roger's response was some 9 ohm at the same spot. Not only is that wrong, it will be very tough load for amplifiers.
So there *is* a chance that one "interpretation" of it is pretty good just by pure chance?There are so many variations over the years with different versions, clones, tolerances and ageing that people who think get THE LS3/5 sound can get quite different "intepretations" of it.
The measurements of Stereophile in the past had also shown that:
BBC LS3/5a loudspeaker 1989 Measurements | Stereophile.com
Sidebar 2: 1989 Measurements I estimated the voltage sensitivity (using 1/3-octave pink noise centered on 1kHz) and measured the change of impedance with frequency, while the nearfield low-frequency response of each speaker was assessed with a sinewave sweep to get an idea of the true bass...www.stereophile.com
BBC LS3/5a loudspeaker Stirling Measurements | Stereophile.com
Sidebar: Stirling Measurements You can find the measurements of my 1978 samples of the LS3/5a here, and a comparison of their measurements with those of a 1996 KEF sample here. The Stirling LS3/5a V2 offered the same low sensitivity as the original, 82.5dB(B)/2.83V/m, but its impedance (fig.1)...www.stereophile.com
Falcon Acoustics LS3/5a loudspeaker Measurements | Stereophile.com
Sidebar 3: Measurements I used DRA Labs' MLSSA system and a calibrated DPA 4006 microphone to measure the Falcon LS3/5a's frequency response in the farfield, and an Earthworks QTC-40 for the nearfield response. The Falcon's voltage sensitivity was 0.7dB higher than that of my 1978 pair of Rogers...www.stereophile.com
Falcon "Gold Badge" LS3/5a loudspeaker Measurements | Stereophile.com
Measurements, from May 2021 (Vol.44 No.5) In the April 2021 issue of Stereophile, Herb Reichert wrote that he'd spent "almost 40 continuous years using first the kit, then the Rogers, then the Falcon LS3/5a's. Now, a new 5a has entered my world.www.stereophile.com
Gini Systems "LS3/5a" loudspeaker Measurements | Stereophile.com
Sidebar 2: Measurements As John Marks writes, he sent me this unauthorized copy of the classic BBC-designed minimonitor to measure because he suspected an internal wiring problem in one of the speakers. This turned out to be the case: as you can see in fig.1, which shows the step responses of...www.stereophile.com
BBC LS3/5a loudspeaker Harbeth Measurements | Stereophile.com
Sidebar 2: Harbeth Measurements The LS3/5a's impedance magnitude and phase are shown in fig.1. Dropping to 6 ohms only in the top treble octave, it shouldn't give the partnering amplifier any hernias. The sealed box is tuned to 76Hz, the impedance reaching 31.2 ohms at that frequency. There is a...www.stereophile.com
If it didn't, customer would return it and refund so it produces some noises to avoid thatUnfortunately it also sounds

)Highly likely (TM)
Also looks like the marketing team was a little hasty listing them,it should be:Highly likely (TM)
It just should be renamed, its 1/5 if we count Rogers as 3/5 and good speakers as 5/5![]()
This leads me to wonder if BBC ever share the technical built specs of these speakers. If there are so many versions of these BBC speakers and none of them measurements remotely similar, how are they building it? Did they looked at a picture and build it to visual resemblance?There are so many variations over the years with different versions, clones, tolerances and ageing that people who think get THE LS3/5 sound can get quite different "intepretations" of it.
The measurements of Stereophile in the past had also shown that:
BBC LS3/5a loudspeaker 1989 Measurements | Stereophile.com
Sidebar 2: 1989 Measurements I estimated the voltage sensitivity (using 1/3-octave pink noise centered on 1kHz) and measured the change of impedance with frequency, while the nearfield low-frequency response of each speaker was assessed with a sinewave sweep to get an idea of the true bass...www.stereophile.com
BBC LS3/5a loudspeaker Stirling Measurements | Stereophile.com
Sidebar: Stirling Measurements You can find the measurements of my 1978 samples of the LS3/5a here, and a comparison of their measurements with those of a 1996 KEF sample here. The Stirling LS3/5a V2 offered the same low sensitivity as the original, 82.5dB(B)/2.83V/m, but its impedance (fig.1)...www.stereophile.com
Falcon Acoustics LS3/5a loudspeaker Measurements | Stereophile.com
Sidebar 3: Measurements I used DRA Labs' MLSSA system and a calibrated DPA 4006 microphone to measure the Falcon LS3/5a's frequency response in the farfield, and an Earthworks QTC-40 for the nearfield response. The Falcon's voltage sensitivity was 0.7dB higher than that of my 1978 pair of Rogers...www.stereophile.com
Falcon "Gold Badge" LS3/5a loudspeaker Measurements | Stereophile.com
Measurements, from May 2021 (Vol.44 No.5) In the April 2021 issue of Stereophile, Herb Reichert wrote that he'd spent "almost 40 continuous years using first the kit, then the Rogers, then the Falcon LS3/5a's. Now, a new 5a has entered my world.www.stereophile.com
Gini Systems "LS3/5a" loudspeaker Measurements | Stereophile.com
Sidebar 2: Measurements As John Marks writes, he sent me this unauthorized copy of the classic BBC-designed minimonitor to measure because he suspected an internal wiring problem in one of the speakers. This turned out to be the case: as you can see in fig.1, which shows the step responses of...www.stereophile.com
BBC LS3/5a loudspeaker Harbeth Measurements | Stereophile.com
Sidebar 2: Harbeth Measurements The LS3/5a's impedance magnitude and phase are shown in fig.1. Dropping to 6 ohms only in the top treble octave, it shouldn't give the partnering amplifier any hernias. The sealed box is tuned to 76Hz, the impedance reaching 31.2 ohms at that frequency. There is a...www.stereophile.com
It means "that the manufacturer or importer affirms the goods' conformity with European health, safety, and environmental protection standards.". CE markings are not reserved for mains powered devices - childrens toys for example can (and should) have them.I got a kick out of that "CE" mark. What exactly did they test?
No. That is an urban legend that refuses to die. The regulations concerning the letters and the CE logo overall are quite lax:If the speakers were made in China, it could also mean "China Export"! The font of the 'CE' logo varies very slightly between the two.
Tiny differences in the logo don't mean anything. Also, the CE marking is self-certified. By using it, the manufacturer or importer itself assures you and everybody else that he definitely checked all those 10 billion EU regulations and that his products absolutely complies with all of them. The result is that lots of products carry the marking, but the manufacturer never actually bothered to check if the product is technically allowed to carry it. I assume that this problem is also the basis for that "China Export" urban legend.The CE marking must be visible, legible and indelible.
The CE marking must consist of the initials "CE", both letters should have the same vertical dimension and be no smaller than 5mm (unless specified differently in the relevant product requirements).
No, not really, unless it's car audio, where you're often voltage limited.It's very bad because it has 11 ohms of impedance. The lower the better, right?
Nice box/veneer though...