The earliest Supreme cabs were kitted out with Celestion speakers - see the - but as time went on Goodmans were brought in, and for Defiants too. As many cabs are not numbered, it is difficult to say when exactly the change came about - but in all probability in August 1967.

Two cabs - one issued with - with Celestion horns bearing mid July date stamps still have Celestion drivers.

The Goodmans speakers are less sensitive than their Celestion counterparts, but excellent nonetheless, and as heavy and solid as anyone could want.

For an overview of the types of label designed by Vox for the solid state range, .

15/16ohm Goodmans units

Made for JMI from autumn 1967

15/16ohm Goodmans ceramic speakers - part number 20503 10. Power rating 25W. Cast iron frame, sprayed silver hammerite, smooth black plastic dust covers. Vox labels.

Similar speakers to the ones above, but with Goodmans' own label. Part number 15535 H28. Again, cast iron frames sprayed silver, smooth plastic dust covers.

Other designations: - 1062127 in the instance to the left, and 20578 36 to the right. The "type" given on the right is 112/12M/15, indicating the weight of cone and magnet, which vary from one type of driver to another, according to the needs of the purchaser. The speaker on the right evidently has a light magnet.

Later 15/16 ohm Goodmans speakers for Vox solid state amps

Generally in 1969 these are Goodmans 15535 H28 (see the earlier Goodmans-branded example above) ceramics with "Vox Sound Equipment Limited" (VSEL) and "Vox Sound Limited" (VSL) labels. On VSEL, . And on VSL, .

See for example, Supreme no. 2231 Note that the dust covers are still smooth plastic.

Later, towards the very end of the "Vox Sound Equipment Limited" period, drivers with ridged covers come in, as for example, in the cab below:

Code 15422 75 (less likely 25). These appear to have a light magnet.

Later still, probably in late 1970, "Vox Sound Limited", the company that succeeded "Vox Sound Equipment Limited" in the summer of 1970, dispensed altogether with VOX labels and simply used the drivers as they came from the Goodmans factory - with green rectangular stickers.

A late Supreme cab with an AC100.

Goodmans used the same assembly as above - frame and cover, etc. - for the 50W version of this unit (with red labels), its "Audiom 12P Power Range" speakers. "Power Range" is always designated on the label.

15 ohm, red label. Part no. 15715. 15ohm Power Range units with red labels are relatively uncommon.

8 ohm Goodmans units

Made for JMI from the third quarter of 1967

The majority of JMI Vox Defiants had Celestion ceramic speakers. A few however, had Goodmans, as below:

Throughout the "Vox Sound Equipment Ltd" and early "Vox Sound Ltd" periods, these black-capped Goodmans were the norm:

A "Vox Sound Equipment Limited" Defiant with JMI inspection tag still present.

Below, later versions of the speaker, the Power Range Audiom 12-P, with ridged tops (much as the examples with green labels, above:

Brochure from the 1970s

Probably around 1972, Power Range Audiom 12Ps were produced with black frames. The ridged dust caps remained the same:

Above an 8 ohm example (red label), part number 95711 H02.