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Geordie McBoyne · 12-09-2021, 10:24 PM

I've gathered up all the parts required to build a Bush DAC90. The plan is to construct the alleged version which employed B8A valves instead of the older 0.2amp heater octal types.
For starters a chassis from a scrapped Bush SUG3 will be modified for installation in the DAC90 cabinet. The thee waveband coil pack in the SUG3 was used in my all-dry battery version of the DAC90. The brief for that project was build a four valve battery receiver on a DAC90 chassis. The batteries must be housed in the cabinet. The circuit is of a Philips design to exploit the B8A 1.4volt valves, DK40 and DL41.

First, the SUG3 chassis must have a cut-out area to accommodate the magnet of the loudspeaker.

Geordie McBoyne.

bobhowe · 13-09-2021, 11:02 AM

Hi David nice to see another DAC90 project must have adapter plates and modifications kind regards Bob

Murphyv310 · 13-09-2021, 03:59 PM

Looking forward to seeing this one David.
I like your ideas and this one sounds interesting.

bobhowe · 13-09-2021, 04:32 PM

Hi Trevor its going to have 5 Adapter plates Tease

kind regards Bob

Geordie McBoyne · (This post was last modified: 13-09-2021, 08:11 PM by Geordie McBoyne.)

No spare time today to make the five adaptor plates but at least it was possible to make the cut-out in the chassis for the loudspeaker magnet.

Geordie McBoyne.

Murphyv310 · 13-09-2021, 08:38 PM

Nice Job on the chassis David.
Can't wait to see the adaptor plates.
Will you need brackets as well?

Geordie McBoyne · (This post was last modified: 14-09-2021, 12:10 PM by Geordie McBoyne.)

Hi Trevor,
No brackets required but you never know some component in the modified DAC90 might need one. I'll make a start today on those adaptor plates. Will need five for this project.

Geordie McBoyne.

bobhowe · 14-09-2021, 02:41 PM

(14-09-2021, 12:09 PM)Geordie McBoyne Wrote: Hi Trevor,
No brackets required but you never know some component in the modified DAC90 might need one. I'll make a start today on those adaptor plates. Will need five for this project.

Geordie McBoyne.

Hi David if you do Five a day it will perform well Biggrin

kind regards Bob

bobhowe · 14-09-2021, 05:27 PM

(13-09-2021, 08:38 PM)Murphyv310 Wrote: Nice Job on the chassis David.
Can't wait to see the adaptor plates.
Will you need brackets as well?

Hi Trevor there will be brackets as well as i am going to Davids shop tomorrow with some Parts for his DAC90 and there will be speaker brackets as well kind regards Bob Biggrin

Geordie McBoyne · (This post was last modified: 14-09-2021, 08:12 PM by Geordie McBoyne.)

Five adaptor plates made in a day. It took two and half hours to make these. Of course I could have saved time by just fitting the plates in their original form. Second attachment.
Now I must find five B8A valveholders, or four B8A and one B9A if I decide to use an UCH81 as the frequency changer.

Geordie McBoyne.

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