Brown(?) 5a Soundbox

[Teak]

No, they had saxophone style horns, like the 511 etc.

No, both the 153 and the 158 had a version of the 157 horn.
The 153 had the No.5a soundbox and the 158 had the No.16, both in Florentine bronze.

This is the horn. Looks like a saxophone style horn to me not at all comparable to the reentrants he was refering to.

[soundgen]

No, they had saxophone style horns, like the 511 etc.

No, both the 153 and the 158 had a version of the 157 horn.
The 153 had the No.5a soundbox and the 158 had the No.16, both in Florentine bronze.

This is the horn. Looks like a saxophone style horn to me not at all comparable to the reentrants he was refering to.

Bifurcated ( sort of a half re-entrant ) not saxophone

[Inigo]

It's clear.
Now we've noticed that the sax horns were much longer than the reentrants, for the same horn mouth size. This must be due to the radio of exponential growth applied in their designs. This undoubtedly will give a different tone to both horns...
I'm tempted to bid that the sax horns weren't exponential in design; this one seems to be of pure linear growth, conical, but very long, which certainly will improve the bass.... Or maybe an exponential of low ratio, but shortened so the final flare is missing...

[epigramophone]

HMV advertised the saxophone horn models with the slogan "Listen to the Bass!", but they did not invent the design.
The Apollo "Deep Tone Resonator" horn anticipated it by several years.

[Steve]

HMV didn't invent anything!

[Steve]

No, they had saxophone style horns, like the 511 etc.

No, both the 153 and the 158 had a version of the 157 horn.
The 153 had the No.5a soundbox and the 158 had the No.16, both in Florentine bronze.

This is the horn. Looks like a saxophone style horn to me not at all comparable to the reentrants he was refering to.

Roger was absolutely correct, the horn is from a 157 which was not a re-entrant in name as although it operated on the same principle as the four chamber re-entrant horns, it only had two chambers with the simpler two way split sound conduit from the tone-arm.

The 153 has the same horn as the 157. It is not a saxophone or re-entrant horn. The saxophone horns whilst highly effective are no match for the 157 horn, let alone a full re-entrant horn.

As Roger said, Apollo invented the saxophone horn in 1920. I have two different models, one the original type with cast aluminium horn and the later type with papier mache horn similar in size to an EMG Mark 8, albeit with added bends to enable the horn to fit inside a cabinet.