Did anyone have the guts to cut out a Lowther Whizzer Cone?

[Arno Pf]

Got it?

Two-way speaker system, WAY horn-loaded | Page 2 | Audiokarma Home Audio Stereo Discussion Forums

 

[Zoran]

I have never heard Lowthers, although I assume they will have the same sort of Fostex/other fullrange sound with tons of resonances and energy storage, sort of a paper/cardboardy mess. Loud at low power like only peaky speakers can be. Am I wrong?

BTW, the SEAS fullrange was probably this:
Seas Breitbandlautsprecher 11F-LGWD

If You examining driver without cabinet, in your hands, You are not wrong.

 

[Zoran]

Some curves. The two on top are measured close and approx 1m distance without filter. The lower two with filter

Put some barrel to fill the cavity. Leave just 1mm space. Do not use the barrels much smaller dia from piston. Goal is to fill that cavity as slose but not to have contact with moving piston. Please take a look at the Altman micro machines examples with plugs.

 

[Zoran]

Mother of Tone - The BYOB Speaker System

 

[Arno Pf]

Put some barrel to fill the cavity. Leave just 1mm space. Do not use the barrels much smaller dia from piston. Goal is to fill that cavity as slose but not to have contact with moving piston. Please take a look at the Altman micro machines examples with plugs.

Not sure if I understand what you mean

 

[Zoran]

Almost every example of diy plug have huge gap with respect to the coil former barrell. It should be max 1mm or smaller. But not to have contact in anu possition of moving coil piston. About 5mm longer than the end of former or beguining of the membrane.
Take a look at Altmans site please.

 

[Arno Pf]

Almost every example of diy plug have huge gap with respect to the coil former barrell. It should be max 1mm or smaller. But not to have contact in anu possition of moving coil piston. About 5mm longer than the end of former or beguining of the membrane.
Take a look at Altmans site please.

What is the effect on the SPL curve or impulse response if the gap is bigger?