Tannoy Chester T165 crossover

[Ylab]

Great thank you waxx and all of you guys for all your help.

The original srm10b crossover that you can see at the bottom dont look to bad either! I will probably start from there and than fine tune. My plan is to build some proto version mounted outside of the speakers for easy tweaking/testing.

 

[Ylab]

Don’t they look great !

 

[Glyptoron]

My plan is to build some proto version mounted outside of the speakers for easy tweaking/testing.

I recommend the Achromic non inductive resistances from Solen. They have the whole range in 16 W E24 values.

Solen Electronique Inc. | Product categories | AchrOhmiC MIL Spec Resistors

The most difficult part is about to begin: the experiments!
Cheers.

 

[Glyptoron]

Don’t they look great !

I found that diagram on diyaudio :
Tannoy SGM-10B Xover shematic anyone?

 

[Ylab]

I found that diagram on diyaudio :
Tannoy SGM-10B Xover shematic anyone?

Exactly what I was looking for!

Meanwhile all the missing parts are ordered, should begin prototyping next week!

 

[Glyptoron]

Exactly what I was looking for!
...and that I found.
This Small Gold Monitor 10 crossover is another variant of the Tannoy one for Dual Concentric speakers. See page 23 of the attached document.
Good continuation.​

 

[Ylab]

Great lecture thanks for that!

The SRG10B crossover seem to be the flatest at the crossover frequency, better control of the woofer resonance. The simulation is at the brightest setting.

 

[spladski]

I have Eatons which are 10 inch. I found that cabinet treatment was necessary to damp reflection from the rear panel, exacerbated by a shallow cabinet. This made the sound ragged which could be seen in the un-smoothed response as 3dB ripples.

 

[mikorist]

3500 Hz, which would be very surprising for a 10 inch loudspeaker

Do not change the original crossover to 2528 at all. The presence effect is lost - if any value is changed ... The crossover frequency starts at 3500Hz - really
This are extended range drivers. Very rare ... and different from other DCs

View attachment hfe_tannoy_t145_165_185_225.pdf

 

[mikorist]

This is the original crossover at position 0 - presence -Tannoy Dorset

This was measured at about 2.5 meters from the speakers - out of hand - Dayton Audio iMM-6 Calibrated Microphone - SPL at 0 is 93.00 db...

I don't have better measuring equipment at the moment - but this is roughly what it is ...

 

[petealcock]

Hi Ylab,

I came across this thread describing your Tannoy project after I searched for the schematic of the Tannoy Dover (which I've just bought). Did you complete your crossover renewal project and if so, how did it work out?

I have a pair of Tannoy Dorset which use the polyolefin (black plastic) cone, and I've never really been pleased with them, so when I saw a battered pair of Dovers but with perfect 2558 drivers for sale, I jumped at them. I've been researching the crossovers of each, and it seems Tannoy went to a lot more trouble and cost on the T165/185 crossover. As a first experiment I've just swapped out the drivers, and there is some improvement, but I'm aware the crossover frequency is wrong. Next step is to swap out the crossovers too to match the driver with the crossover. To my mind the Dover cabinet is too small for the 2558 to give its best bass.