I made a comparison of 11 Celestion speakers. No post processing (not even lowpass/highpass) to give the fairest representation of how they sound.

Which one do you like the most and what are your favourite speakers?

https://youtu.be/G7Ko10cQgB4

Very nice effort but there is a bit of an issue here. The different loudspeakers have different Thiele/Small parameters. I used to have the T/S for some (including the G12T75 and V30) which I received from Celestion directly some years ago. That said, they'd behave differently in the same box and where one or few may be well suited for this volume, remaining will work in non-suitable enclosure hence impression on their sound would be a bit misleading. An enclosure is designed based on the T/S parameters of the drive unit (loudspeaker) and a few other tricks. Cone geometry and directivity patterns of the different units will also influence how they sound in this setup with the box on the floor. These will also exhibit different impedance profiles (largely affected by enclosure volume as well) and that has a direct effect on the tube amp sound driving them as it does have an output transformer.

A typical good comparison would be in an anechoic chamber or if speaker is lifted off the ground at least 2m, compared in the most suitable enclosure for each unit and driven by a solid state amp. Loudspeaker nominal impedance should also be equal for all, despite it being a somewhat mushi parameter.

Written by Fulcrum on 23.11.2020 at 09:48

Very nice effort but there is a bit of an issue here. The different loudspeakers have different Thiele/Small parameters. I used to have the T/S for some (including the G12T75 and V30) which I received from Celestion directly some years ago. That said, they'd behave differently in the same box and where one or few may be well suited for this volume, remaining will work in non-suitable enclosure hence impression on their sound would be a bit misleading. An enclosure is designed based on the T/S parameters of the drive unit (loudspeaker) and a few other tricks. Cone geometry and directivity patterns of the different units will also influence how they sound in this setup with the box on the floor.

A typical good comparison would be in an anechoic chamber or if speaker is lifted off the ground at least 2m and if compared in the most suitable enclosure for each unit.

Or... a good comparison would be how most people would use it.
In a normal room?
I record my video's in a treated room and the difference between this and an untreated room is actually barely noticeable in my experience.