12-09-2017, 08:25 PM
Hi Trevor, I'll send Andy a PM.
The loudspeaker has been cleaned and painted, looks a lot better now.
The ARP12 is an equivalent of the Mazda VP23. The ARP12 was made by Mullard and is most likely to be the only valve made by Mullard to use the Mazda octal base. For the HL23DD I'm using an ARP8.
http://www.radiomuseum.org/tubes/tube_arp12.html
Geordie McBoyne.
The loudspeaker has been cleaned and painted, looks a lot better now.
The ARP12 is an equivalent of the Mazda VP23. The ARP12 was made by Mullard and is most likely to be the only valve made by Mullard to use the Mazda octal base. For the HL23DD I'm using an ARP8.
http://www.radiomuseum.org/tubes/tube_arp12.html
Geordie McBoyne.


![[Image: s-l300.jpg]](https://i.ebayimg.com/images/g/tNsAAOSwslda1cMH/s-l300.jpg)





