Search found 299 matches

by rowuk
Sun Apr 26, 2020 5:40 pm
Forum: Everyones Projects
Topic: Tim Mellow OTL Amplifier Build
Replies: 10
Views: 449

Re: Tim Mellow OTL Amplifier Build

Are the 6C33C valves reliable enough for OTL use? I have heard them die with a bang...
by rowuk
Sun Apr 26, 2020 5:34 pm
Forum: Assorted Stuff
Topic: what are you doing ?
Replies: 398
Views: 13312

Re: what are you doing ?

I can still go to work every day. On the weekend, I play my trumpet in front of nursing homes as the "inmates" can't go to church. They get folk tunes about springtime and a couple of church tunes for the time after Easter and before Pentecost. I am working on my new speakers (strong tendency for op...
by rowuk
Mon Apr 06, 2020 10:50 pm
Forum: Everyones Projects
Topic: Tactile perception
Replies: 19
Views: 2166

Re: Tactile perception

IslandPink wrote:
Wed Feb 12, 2020 10:54 pm
What are the bass driver units ?
I couldn't see any info on the previous thread - so interested to hear.
Fane Colossus 12 MNB (Neodymium)
by rowuk
Wed Apr 01, 2020 7:48 pm
Forum: Speakers
Topic: Questions instead of answers
Replies: 1
Views: 433

Questions instead of answers

I have some new big 66cm tractrix horns and have been having a great time listening and experimenting. They have nice non-honky response down to around 300Hz with a Faital HF146. They are about 60 cm deep, so I am thinking about lower midrange upper bass solutions that would put the woofer back a wa...
by rowuk
Wed Mar 25, 2020 10:11 pm
Forum: Assorted Stuff
Topic: Resto-mod cars.
Replies: 18
Views: 1169

Re: Resto-mod cars.

This is a tough call. There is a certain beauty in vintage, but whether one wants to „worship“ it is a different story. Would a vintage hot rod from the 50s be something worth restoring? For me, if I can see that the modder understood the „essence“ of the original, I have no trouble with modern susp...
by rowuk
Tue Mar 17, 2020 7:56 pm
Forum: Assorted Stuff
Topic: Corona Virus Lock Down 'Rant' Thread.
Replies: 576
Views: 18886

Re: Corona Virus Lock Down 'Rant' Thread.

I just started to look for the math behind the political claims. All of a sudden, the supply of articles went from thousands to two.

If I should rant, it would be as a free lance trumpeter with no more gigs until after Easter!
by rowuk
Sat Mar 14, 2020 7:06 pm
Forum: Speakers
Topic: Sound damping material
Replies: 32
Views: 2972

Re: Sound damping material

I think that we can forget about „damping“ vibration with elastic materials. As the woofer is attached directly to the frame, it will move unless something with greater strength (mass or coupling to another more rigid structure) helps it. Maybe adding a granite base would help?
by rowuk
Fri Mar 06, 2020 1:57 pm
Forum: Speakers
Topic: Robins Next generation
Replies: 4
Views: 706

Re: Robins Next generation

Nice - but I understand your concern about what is needed. The region from 100 to 500H is the big problem area - I'm sure it needs horn, but how to do something successful that is not impractical ? Compromises have to be made - but will it be mouth size, length or offset/delay to compromise ? Perso...
by rowuk
Fri Mar 06, 2020 1:46 pm
Forum: Speakers
Topic: Robins Next generation
Replies: 4
Views: 706

Re: Robins Next generation

Chris, I always measure first. Holm Impulse is my tool of choice, as the room plays less of a factor during initial voicing - and I do not have to be outdoors in the wet/cold. In this case, the 66cm horn has plenty of gain down to around 250 Hz and the 12" Fane Colossus MBN sounds great up to 800-90...
by rowuk
Wed Mar 04, 2020 8:49 pm
Forum: Speakers
Topic: Robins Next generation
Replies: 4
Views: 706

Robins Next generation

There is a retired guy in Germany that is making horns at a reasonable price - which motivated me to think about the next generation of speaker. At first I am using my 2x12" Fane Neodymium woofer box with the horn to hear what it does. The first impressions are decent. MiniDSP, 4 channels of single ...
by rowuk
Mon Feb 24, 2020 10:23 pm
Forum: Everyones Projects
Topic: Tactile perception
Replies: 19
Views: 2166

Re: Tactile perception

Nick wrote:
Wed Feb 12, 2020 11:26 pm
Facinating. Maybe it applies. Maybe it was the moment. I certainly was not drunk or deaf at the time. Thank you for the link. I have not heard of her before and will be listening to more.
by rowuk
Mon Feb 24, 2020 5:36 pm
Forum: Speakers
Topic: Tannoy Enclosure
Replies: 60
Views: 3681

Re: Tannoy Enclosure

The best I have heard these sound was mounted in a wall to another room as an infinite baffle. In this case Thiele/Small becomes insignificant, there are no audible reflections from inside the cabinet coming back through the speaker cones and the most AWESOME low end extension imaginable.
by rowuk
Mon Feb 24, 2020 5:32 pm
Forum: Buying and Selling
Topic: Looking for a decent tone arm
Replies: 0
Views: 940

Looking for a decent tone arm

I am looking for a decent tone arm for myself - an SME 3009-2 or equal. An Ortofon MC-30 will be used so a super low mass arm is not really useful. It is going to be a second arm on my turntable. Anyone have something interesting at a "fair" (does not mean cheap) price? Not for resale.
by rowuk
Mon Feb 24, 2020 5:27 pm
Forum: Assorted Stuff
Topic: General health matters.
Replies: 73
Views: 4367

Re: General health matters.

I am diabetic and I feel that if we want to get out from under the sweet tooths spell - that substitutes do not help. The body maintains its craving for sweet and at one point, we cave in. I have had the most success with NOT eating things with a long list of ingredients (everything artificially swe...
by rowuk
Fri Feb 21, 2020 8:13 pm
Forum: Assorted Stuff
Topic: General health matters.
Replies: 73
Views: 4367

Re: General health matters.

Sugar is hidden EVERYWHERE. I would keep the little bit of sugar in your tee but reduce intake dramatically elsewhere. Bread, rice, potatoes, corn, beer and crisps are pure poison for those with sugar issues. Google glycemic index for life saving details. I find that artificial sweeteners keep our u...