Search found 893 matches

by thomas
Thu Aug 29, 2019 6:53 am
Forum: Assorted Stuff
Topic: The Audio-Talk Motorcycling thread.
Replies: 513
Views: 53445

Re: The Audio-Talk Motorcycling thread.

Being simplistic I'd just wire in two independent on/off switches, for dip and mains....

Or a two arm rotary switch of some sort....?
by thomas
Thu Aug 22, 2019 6:46 am
Forum: Assorted Stuff
Topic: The Audio-Talk Motorcycling thread.
Replies: 513
Views: 53445

Re: The Audio-Talk Motorcycling thread.

Dave's bike on the other hand behaved impeccably, and a credit to his rebuilding skills.

I'm not sure what animal he was hiding in his rear brake tho......
by thomas
Thu Aug 22, 2019 6:44 am
Forum: Assorted Stuff
Topic: The Audio-Talk Motorcycling thread.
Replies: 513
Views: 53445

Re: The Audio-Talk Motorcycling thread.

I fitted a supa dupa all singing neoprene seal to my M18 chaincase over winter, replacing the rubber band.....it's slightly less drippy than it was...previous owner had got busy with the old silicone sealant which may have worked for about 5 minutes.... Melting tallow sounds fun, I might try that ne...
by thomas
Wed Aug 21, 2019 9:00 pm
Forum: Assorted Stuff
Topic: The Audio-Talk Motorcycling thread.
Replies: 513
Views: 53445

Re: The Audio-Talk Motorcycling thread.

Ah that territorial marking on my drive will be the AJS chaincase Phil... :)
by thomas
Wed Aug 21, 2019 8:58 pm
Forum: Assorted Stuff
Topic: The Audio-Talk Motorcycling thread.
Replies: 513
Views: 53445

Re: The Audio-Talk Motorcycling thread.

And a very enjoyable day t'was too.... acutually Dave mine's a rufty tufty hairy chested AJS M18 500cc.... Quite disconcerting at Headcorn was parachutists landing and aeroplanes taking off and landing seemingly amidst them.... Anyhow, back to the bikes, interesting how mine was a long stroked lazy ...
by thomas
Wed Aug 14, 2019 10:33 am
Forum: Your Fave Artists
Topic: Steve Hillage Band - Live.
Replies: 8
Views: 1050

Re: Steve Hillage Band - Live.

Thanks for the heads up...very excited...Motivation Radio got me through my O levels.....Green I wore out my c90 cassette of in uniland....

So I'm in, got my ticket for the Islington set, err went for the seat option, it's my knees you know......
by thomas
Fri Jun 28, 2019 6:46 pm
Forum: Everyones Projects
Topic: Inverted OTL with 6SN7/6AS7
Replies: 116
Views: 7834

Re: Inverted OTL with 6SN7/6AS7

I might have to have a go at one of these inverted OTLs. 5687 version looks interesting but they're getting rarer and pricier. What would the panel say about subbing Russian 6N6Ps - claimed to be equivalent based on a quick bit of research (apart from the different pin layout) and much easier to fi...
by thomas
Wed Jun 12, 2019 10:30 pm
Forum: Everyones Projects
Topic: GK-71 - economical build.
Replies: 497
Views: 59747

Re: GK-71 - economical build.

IslandPink wrote:
Wed Jun 12, 2019 11:41 am
Good to know you're getting along OK with G2 at 625V :)
It hasn't blown up...yet.....! Actually it's a mere 550v relative to the cathode isn't it?!
by thomas
Wed Jun 12, 2019 1:06 am
Forum: Everyones Projects
Topic: GK-71 - economical build.
Replies: 497
Views: 59747

Re: GK-71 - economical build.

And here's mine for posterity..... No prizes for originality.....I started off with two 6n6ps which sounded very nice, but changed V1 to a 6n1p for a touch more gain, and played with the biasing until I thought it was about right. Ideally I think I could have upped the 320v and rebias and run a bit ...
by thomas
Tue Jun 11, 2019 7:28 pm
Forum: Everyones Projects
Topic: GK-71 - economical build.
Replies: 497
Views: 59747

Re: GK-71 - economical build.

Most big pentodes have that sort of limitation. For example EL34, Va=800, Vg2=500. Not sure there is a official answer other than it seems to work ignoring the value if triode connected and a limiting screen resistor is used. My GK71 amp (6n1p /dc/ 6n6p /Tx/ GK71 in triode mode) runs with a Va of a...
by thomas
Thu Jun 06, 2019 10:10 am
Forum: Assorted Stuff
Topic: Owston 2019 - Listening Impressions
Replies: 59
Views: 5631

Re: Owston 2019 - Listening Impressions

chris661 wrote:
Thu Jun 06, 2019 10:05 am
If the OBs are close to anything (walls, furniture) when installed at home, you're likely to get more lower-mids and bass. Time for more measurements :D

Chris

I thought you'd say that!

Actually I have mentally 'lodged' your measuring equipment recommendations......
by thomas
Thu Jun 06, 2019 9:37 am
Forum: Assorted Stuff
Topic: Owston 2019 - Listening Impressions
Replies: 59
Views: 5631

Re: Owston 2019 - Listening Impressions

I did flap around searching for the lost bass on my OB's on Saturday night, I must admit, although on Sunday Chris did his DSP magic on them which I think worked better in that room....now they are back home they sound err quite different, so much so that I removed the padding off the Lowthers last ...
by thomas
Sun Jun 02, 2019 10:07 pm
Forum: Assorted Stuff
Topic: Attendees Owston 1/2 June 19
Replies: 188
Views: 16622

Re: Attendees Owston 1/2 June 19

Yep I thoroughly enjoyed it, all the systems I thought were excellent, lovely to hear the ESL 57s and 211 amp, and a special thanks to Chris today who tuned and tamed my Lowthers.....
Looking forward to next year!
by thomas
Tue May 28, 2019 11:19 pm
Forum: Assorted Stuff
Topic: Owston '19 what are you bringing
Replies: 142
Views: 12661

Re: Owston '19 what are you bringing

I have a new Tower of Power- (a GK71 amp) I'll be bringing along, also my poor man's 'Quaser' style OB's (thanks DTB!) and my phonostage-on-a-bit-of-wood....
by thomas
Wed May 08, 2019 10:03 am
Forum: Assorted Stuff
Topic: Owston '19 what are you bringing
Replies: 142
Views: 12661

Re: Owston '19 what are you bringing

As for safety issues...err...spurred on by the loan of DtB's Quads, my weedy 801a's Tower of Power has just morphed into a GK71 amp....the HT is about 665vdc. Funnily enough even I'm getting a few pangs of doubt bringing this beasty up as is.... Resist those pangs dear boy, we need your amp, yes, w...