Search found 3993 matches

by simon
Wed Mar 06, 2019 12:55 pm
Forum: Everyones Projects
Topic: Remember These?
Replies: 487
Views: 15493

Re: Remember These?

Cool thanks Steve
by simon
Tue Mar 05, 2019 11:13 pm
Forum: Everyones Projects
Topic: Remember These?
Replies: 487
Views: 15493

Re: Remember These?

Thanks. Can you recommend any specific paint/primer products?
by simon
Tue Mar 05, 2019 10:08 pm
Forum: Everyones Projects
Topic: Remember These?
Replies: 487
Views: 15493

Re: Remember These?

Are you going to use ally plate, and are you going to do your usual spray job? I'm sure you've told me before but what do you use? Does it need an etch primer first? Never done it but might fir the GM70 build.
by simon
Tue Mar 05, 2019 10:06 pm
Forum: Everyones Projects
Topic: Remember These?
Replies: 487
Views: 15493

Re: Remember These?

Thanks Steve, makes perfect sense now.
by simon
Tue Mar 05, 2019 7:05 pm
Forum: Everyones Projects
Topic: Remember These?
Replies: 487
Views: 15493

Re: Remember These?

I can't quite tell from the photo Steve, is that metal inside the wooden frame, or more wood? Looks to have been rebated?

Looking good!
by simon
Mon Mar 04, 2019 12:58 pm
Forum: Speakers
Topic: Something stirs in the Undergrowth
Replies: 2318
Views: 291942

Re: Something stirs in the Undergrowth

Probably not the issue, but I've found that some speakers that haven't been used for a while sound pretty underwhelming until they've "warmed up" again. And then I remember why I liked them when they open up again.
by simon
Mon Mar 04, 2019 12:53 pm
Forum: Everyones Projects
Topic: Phono Frustration
Replies: 52
Views: 1004

Re: Phono Frustration

This sounds like a bit of a result. Who wants a complex solution when a simple one will do :-).
by simon
Mon Mar 04, 2019 12:51 pm
Forum: Everyones Projects
Topic: GM70 SET
Replies: 313
Views: 42224

Re: GM70 SET

Oh dear. 32 (as a pentode?) might just be enough gain, and I have 4 of Andrew's boards for such an eventuality. This is not simplifying things lol!
by simon
Sun Mar 03, 2019 11:29 pm
Forum: Everyones Projects
Topic: Phono Frustration
Replies: 52
Views: 1004

Re: Phono Frustration

Nightmare!
by simon
Sun Mar 03, 2019 11:28 pm
Forum: Everyones Projects
Topic: GM70 SET
Replies: 313
Views: 42224

Re: GM70 SET

Thanks Mark, I always like to see a diagram, just the way my brain works. Over 5 years ago - where does the time go?

I have been tempted to try the 4P1L instead of 12GN7 but I think the gain is only around 15? And then I would need a pre stage for sure.
by simon
Sun Mar 03, 2019 9:49 pm
Forum: Everyones Projects
Topic: Phono Frustration
Replies: 52
Views: 1004

Re: Phono Frustration

Nightmare!
by simon
Sun Mar 03, 2019 9:46 pm
Forum: Everyones Projects
Topic: GM70 SET
Replies: 313
Views: 42224

Re: GM70 SET

Hmmm, I've obviously misremembered - my tired brain associates the Aikido output with WCF, but you're right. Thanks for persisting! But yes, perhaps I'm being overly cautious - a metre's worth of low capacity coax might well not need any buffer. But. The 12GN7 is triode wired (around 20mA IIRC) with...
by simon
Sat Mar 02, 2019 11:50 pm
Forum: Everyones Projects
Topic: GM70 SET
Replies: 313
Views: 42224

Re: GM70 SET

There may be better options than a WCF, and I'm open to suggestions, just that I've built a few and it's a fairly safe bet.

Never tried it in a power amp though TBF, though Dave Dove's 300B amp (which I never heard but was well regarded) had a James' designed pentode Aikido.
by simon
Sat Mar 02, 2019 7:19 pm
Forum: Everyones Projects
Topic: GM70 SET
Replies: 313
Views: 42224

Re: GM70 SET

Yes I figured on the input of the output amps, or the output of the drivers. Not sure if there are any pros and cons? The smaller the current the cheaper the chokes? White cathode follower - what Broskie uses for the output of the Aikido. I currently use the T90As via a filter from the 208s - is thi...
by simon
Sat Mar 02, 2019 6:09 pm
Forum: Everyones Projects
Topic: GM70 SET
Replies: 313
Views: 42224

Re: GM70 SET

Coax via Manchester lol! I've only used the 3116 as subwoofer amps but they work really well as they seem pretty neutral. And they're cheap as chips, well nearly. I'm not sure there's really a good reason not to use them permanently, other than I just like valves. £25 and 25W versus a lot more and a...