Search found 10544 matches

by Cressy Snr
Fri Mar 15, 2024 3:56 pm
Forum: Everyones Projects
Topic: OK…so I’m on wi’ summat
Replies: 149
Views: 32363

Re: OK…so I’m on wi’ summat

Earthing system is in place plus the choke snubbers:
Interior3.jpeg
Interior3.jpeg (163.05 KiB) Viewed 377 times
And of course we have heaters:
Heaters.jpeg
Heaters.jpeg (121.84 KiB) Viewed 377 times
That's it for today.
by Cressy Snr
Fri Mar 15, 2024 11:03 am
Forum: Everyones Projects
Topic: OK…so I’m on wi’ summat
Replies: 149
Views: 32363

Re: OK…so I’m on wi’ summat

Mains and heater wiring are in and tested: Interior2.jpeg Had trouble with the primary 240V series connection. It's a long time since I used this particular Danbury mains transformer. I'd taken the labels off and lost the documentation. That was a good move wasn't it. :roll: I'd identified each half...
by Cressy Snr
Wed Mar 13, 2024 2:58 pm
Forum: Beginners
Topic: Pot Impedance
Replies: 3
Views: 600

Re: Pot Impedance

Thanks Nick.
by Cressy Snr
Wed Mar 13, 2024 2:12 pm
Forum: Beginners
Topic: Pot Impedance
Replies: 3
Views: 600

Pot Impedance

Just a quick question: I have a high quality, Khozmo shunt stepped attenuator, that cost three figures when I bought it for use in a balanced passive preamp. I'd like to use it with the valve amp rebuild but it is only 10K. Is there any reason not to use it in front of the 6SL7 input stage of the va...
by Cressy Snr
Tue Mar 12, 2024 8:29 pm
Forum: Everyones Projects
Topic: OK…so I’m on wi’ summat
Replies: 149
Views: 32363

Re: OK…so I’m on wi’ summat

Cheers Simon, Output transformers are now mounted. Took me all day. Not as fast as I was, but it’s not about speed or urgency; not these days. IMG_0375.jpeg Valve sockets will go in tomorrow along with the input sockets and speaker outlets. Rest of the infrastructure (tagstrips, busbar etc) on Thurs...
by Cressy Snr
Mon Mar 11, 2024 9:09 pm
Forum: Everyones Projects
Topic: OK…so I’m on wi’ summat
Replies: 149
Views: 32363

Re: OK…so I’m on wi’ summat

Inside so far:
IMG_0373.jpeg
IMG_0373.jpeg (122.96 KiB) Viewed 632 times
Brass bars held by M5 bolts keep the caps in place and rectifier socket hole has been punched.
by Cressy Snr
Mon Mar 11, 2024 5:39 pm
Forum: Everyones Projects
Topic: OK…so I’m on wi’ summat
Replies: 149
Views: 32363

Re: OK…so I’m on wi’ summat

A little more progress:
IMG_0372.jpeg
IMG_0372.jpeg (94.65 KiB) Viewed 660 times
Caps, power transformer and choke mounted. Output transformers tomorrow.
IMG_0371.jpeg
IMG_0371.jpeg (122.17 KiB) Viewed 660 times
by Cressy Snr
Sun Mar 10, 2024 9:14 pm
Forum: Everyones Projects
Topic: OK…so I’m on wi’ summat
Replies: 149
Views: 32363

Re: OK…so I’m on wi’ summat

…We’re both rising from the ashes… Definitely Paul. It’s the making and the metalwork, planning the layout, dressing the leads inside, whilst trying to take care not to create unnecessary stray capacitance that I like. My head is only just starting to get around designing the circuits themselves ag...
by Cressy Snr
Sun Mar 10, 2024 7:37 pm
Forum: Everyones Projects
Topic: OK…so I’m on wi’ summat
Replies: 149
Views: 32363

Re: OK…so I’m on wi’ summat

The NVA based solid state amp is currently doing sterling service in place of the valve amp. That’s the great thing about hi-fi; you always get 2 improvements. The first one came when I replaced the NVA based amp with the valve amp, the second, when I replaced the valve amp with the NVA based amp. I...
by Cressy Snr
Sun Mar 10, 2024 6:30 pm
Forum: Everyones Projects
Topic: OK…so I’m on wi’ summat
Replies: 149
Views: 32363

Re: OK…so I’m on wi’ summat

A bit of progress on the chassis today:
IMG_0370.jpeg
IMG_0370.jpeg (110.73 KiB) Viewed 775 times
IMG_0369.jpeg
IMG_0369.jpeg (108.34 KiB) Viewed 775 times
by Cressy Snr
Sun Mar 10, 2024 6:21 pm
Forum: Everyones Projects
Topic: 6550 SE Amplifier
Replies: 110
Views: 9441

Re: 6550 SE Amplifier

Excellent stuff!
by Cressy Snr
Sat Mar 09, 2024 1:53 pm
Forum: Everyones Projects
Topic: 6550 SE Amplifier
Replies: 110
Views: 9441

Re: 6550 SE Amplifier

Seconded :)
by Cressy Snr
Sat Mar 09, 2024 1:23 pm
Forum: Everyones Projects
Topic: OK…so I’m on wi’ summat
Replies: 149
Views: 32363

Re: OK…so I’m on wi’ summat

Yes, as Phil said, it’ll only work harden if repeatedly bent backwards and forwards, then it’ll snap.
by Cressy Snr
Sat Mar 09, 2024 10:16 am
Forum: Everyones Projects
Topic: OK…so I’m on wi’ summat
Replies: 149
Views: 32363

Re: OK…so I’m on wi’ summat

simon wrote: Sat Mar 09, 2024 9:45 am Nice Steve. Does aluminium work-harden at all or can it be bent "in one"?
It does work harden so you probably have only the one chance to get it right. Steel is more forgiving but harder to get moving in the first place. Copper would be a brilliant option for bending.
by Cressy Snr
Fri Mar 08, 2024 10:37 pm
Forum: Everyones Projects
Topic: OK…so I’m on wi’ summat
Replies: 149
Views: 32363

Re: OK…so I’m on wi’ summat

I'm no metalbasher Steve, how did you get such a nice corner and straight side at the front? I use a thick chopping board with a machined straight, flat edge. Place the metal sheet on the edge of the kitchen worktop, then place the board on top of the metal to be bent and line it all up with the lo...