Search found 4193 matches

by simon
Thu Feb 06, 2020 10:54 pm
Forum: Speakers
Topic: Ali Bastanis OB testing & results
Replies: 84
Views: 2620

Re: Ali Bastanis OB testing & results

Ah right, I'd entirely missed the suspension mechanism when I flicked through on my phone. Looking again on a computer it's far from trivial! A 3 wire cradle supported from two basket fixing holes and something around the magnet, suspended from above would probably be easiest, if there's enough sens...
by simon
Thu Feb 06, 2020 6:53 pm
Forum: Speakers
Topic: Ali Bastanis OB testing & results
Replies: 84
Views: 2620

Re: Ali Bastanis OB testing & results

Yes, I'm interested in the drivers being out of phase, and how that works without a lot of cancellation, but thought one step at a time. I get the equal weight distribution/simplified centre of gravity of a pair, but supporting a single driver should be a reasonably simple structural problem, especi...
by simon
Thu Feb 06, 2020 5:58 pm
Forum: Speakers
Topic: Ali Bastanis OB testing & results
Replies: 84
Views: 2620

Re: Ali Bastanis OB testing & results

In a small room I think a single UM18 will be fine. There is definitely something magical about the UM vs the RSS390 15" I was using before and feel a 1 x 18" UM18 would give a better result than 2 x 15" That's good news! But I need to reread the thread again as I thought much of the magic was from...
by simon
Thu Feb 06, 2020 3:15 pm
Forum: Speakers
Topic: Ali Bastanis OB testing & results
Replies: 84
Views: 2620

Re: Ali Bastanis OB testing & results

The benefit of the Behringers is the in built DSP I suppose, noting comments that Vic doesn't actually use any. Are there any decent, affordable standalone DSP options if required?
by simon
Thu Feb 06, 2020 3:12 pm
Forum: Speakers
Topic: Ali Bastanis OB testing & results
Replies: 84
Views: 2620

Re: Ali Bastanis OB testing & results

Are you thinking of more of the same 18"ers Ali, or swapping to the Daytons?
by simon
Thu Feb 06, 2020 2:48 pm
Forum: Speakers
Topic: Ali Bastanis OB testing & results
Replies: 84
Views: 2620

Re: Ali Bastanis OB testing & results

Bum. Bum bum bum. :-D
by simon
Thu Feb 06, 2020 2:42 pm
Forum: Speakers
Topic: Ali Bastanis OB testing & results
Replies: 84
Views: 2620

Re: Ali Bastanis OB testing & results

Ah, Vic's posted since. If I might ask Vic, have you tried the big 18" versions in much smaller rooms than your own living room, and if so how did they fare? How much space from walls do they need?
by simon
Thu Feb 06, 2020 2:40 pm
Forum: Speakers
Topic: Ali Bastanis OB testing & results
Replies: 84
Views: 2620

Re: Ali Bastanis OB testing & results

Bum. Bum bum bum.

Thanks for the report Ali. I'm going to tell myself that my 3.5m square room is too small for those 18"ers. Vic suggests 15"ers aren't in the same league so not sure what real options I would have. Are you thinking of 18s then?
by simon
Tue Feb 04, 2020 12:51 pm
Forum: Speakers
Topic: Ali Bastanis OB testing & results
Replies: 84
Views: 2620

Re: Ali Bastanis OB testing & results

Excellent Ali, good man. Looking forward to your views for context. I'm hoping you're not that impressed. But only cos I can't justify £1600 for the drivers plus the DSP...
by simon
Mon Feb 03, 2020 10:51 pm
Forum: Speakers
Topic: Ali Bastanis OB testing & results
Replies: 84
Views: 2620

Re: Ali Bastanis OB testing & results

An interesting take on OB. I'd really like to hear them to understand just how they sound.
by simon
Sun Feb 02, 2020 2:23 pm
Forum: Everyones Projects
Topic: GM70 PP
Replies: 151
Views: 12862

Re: GM70 PP

Dunno. If you think you can hear the difference in rectifiers, not saying you can't BTW, you probably need to try 1Ns, something faster, then try the 6AX4s etc. and see what difference you do hear. There's a lot written on the net about which is best but nothing clear. I suspect it's very individual...
by simon
Sun Feb 02, 2020 11:37 am
Forum: Everyones Projects
Topic: GM70 PP
Replies: 151
Views: 12862

Re: GM70 PP

If it helps any the GM70 amp I brought to Owston last year used 6AX4GTs for the GM70 PS. The 12GN7 drivers used SS rectifiers but I can't for the life of me remember if they were simple 1Ns or something faster.
by simon
Thu Jan 30, 2020 12:38 pm
Forum: Assorted Stuff
Topic: Signal Generators
Replies: 13
Views: 683

Re: Signal Generators

This won't help Stephen but what I've done in the past is create some test tones and sweeps in Audacity, saved them into my Squeeze Center library and then I can just play them, in a loop if necessary. It's been very educational, along with a spectrum analyser ap on my tablet/phone, though I don't k...
by simon
Fri Jan 24, 2020 12:51 pm
Forum: Speakers
Topic: SLOB project
Replies: 200
Views: 9359

Re: SLOB project

Very interested to hear these Lii full rangers...
by simon
Sat Jan 18, 2020 1:09 pm
Forum: Speakers
Topic: SLOB project
Replies: 200
Views: 9359

Re: SLOB project

Yes I found the side wings added to the zing of the 208EZ wide band drivers around 2kHz which is why I moved to the simple flat baffle for the 208s and the H frames for the 285GMFs. Definite improvement.