aks2600 Posted August 3, 2021 Posted August 3, 2021 Does anyone know much about these? Also potential value? (I may sell) Ive owned them for quite some years, Dallas Clarke has gone over them and made all good. May have originally been in ABC studios, I bought from a now closed recording studio in Tamworth. I think they may be Ferguson Transformers (maybe Trimax?). They sound quite nice. Any help is appreciated. amps001.pdf 2
BLAH BLAH Posted August 3, 2021 Posted August 3, 2021 No idea...but interesting amps...Dang the stuff that goes through Dallas Clarke's hands!
Herbyj Posted August 3, 2021 Posted August 3, 2021 Hi Yes, they are Trimax. I have heard them on a couple of occasions and think they sound really good. I think the value would be around $1500 to $2000 but depends on the valves, brand, condition, age etc etc. If the amps have been checked by Dallas they should be in good condition. Hope that helps. Herby 1
aks2600 Posted August 3, 2021 Author Posted August 3, 2021 Thank you Herby, that is very helpful. Rob
VanArn Posted August 3, 2021 Posted August 3, 2021 (edited) The transformers and the choke are Ferguson types. The OP 487 does not appear in the old manufacturer's catalogues and I suspect it is the model stipulated by John Moyle for the Playmaster 17 watt Ultra Linear amplifier or a special build for Centre Industries and possibly , also a transformer based on the Mullard 5/20 design. Only measurement will reveal its intended use. Edited August 3, 2021 by VanArn Addition. 1
aks2600 Posted August 3, 2021 Author Posted August 3, 2021 There is a link to a schematic under the second pic, it mentions ferguson transformers 6 minutes ago, VanArn said: The transformers and the choke are Ferguson types. The OP 487 does not appear in the old manufacturer's catalogues and I suspect it is the model stipulated by John Moyle for the Playmaster 17 watt Ultra Linear amplifier design. Thank you for this info
xlr8or Posted August 3, 2021 Posted August 3, 2021 Just adding to the 2 excellent posts above from @Herbyj and @VanArn the following site may be of assistance. Those are definitely fergie trafo iron. The EL34 pair in each monoblock if original may also be worth a lot. Care to share any close up photos? https://www.oneillassociates.com.au/~poneill/Centre_Industries_Amp.shtml#
aks2600 Posted August 4, 2021 Author Posted August 4, 2021 13 hours ago, xlr8or said: Just adding to the 2 excellent posts above from @Herbyj and @VanArn the following site may be of assistance. Those are definitely fergie trafo iron. The EL34 pair in each monoblock if original may also be worth a lot. Care to share any close up photos? https://www.oneillassociates.com.au/~poneill/Centre_Industries_Amp.shtml# Thank you for the link, that certainly looks exactly like them. Ive lost track of the original EL34s unfortunately.
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