Hey Steve
Just spent about twenty minutes reading the thread on DIY audio. Interesting stuff.
I see a lot of folks are pushing you towards active.
I'm not so sure.
Basically, for home / critical listening - I didn't find reasonably priced studio crossovers to sound as good as a passive.
It was a relief to go from 3 power amps and an active crossover to just one amp.
A good friend had an active crossover by Pass Labs, and that was a different kettle of fish - it was many thousands though.
I think if you're going to go into Marchand or better Pass Labs terrirtory fair enough - but you're not going to beat your passive for "normal'' money.. at least I didn't.
Mid priced active crossovers are best saved for live music venues IMO.
YMMV of course.
*edit
the noise floor of active was unacceptable with horns and valves for me, so it wasn't just the added colouration of the active crossover.
Yes, I am sceptical - hence the welcome and kind test of Paulf's DEQX lined up. Something like the DEQX Express is perhaps good enough, we'll see.
My interest was sparked in the need to tame the Tapped horns in room performance. Measuring at the throat they perform pretty much as modelled. In room there are saw teeth - got pretty much the same with the GRF's actually. In reality our ears do not work quite like that and smooth things out.
They actually work very well.
L-pad removal was a revelation.
Perhaps to build 5 mini SET's...
Hi, Speedysteve1
Vey nice work, I take it you live on your own ;-)
Pete
Hi, Speedysteve1
Dedicated room!, now I am jealous.
Pete
Speedysteve,
Very cool. I saw on the other thread that you are experimenting with a DSP. Have you tried putting a few ms delay in on everything but the tapped horns?
I use a Danley tapped horn subwoofer, and it has about a 9ms delay according to the designer, so it's slower than my Tannoy main speakers. I have the crossover for the sub set so low (45-50 Hz) that I don't think I can notice it, but I've never put in a delay on the Tannoys and so still wonder if it would make a difference.
I'm guessing that your tapped horn subs are also slower than the rest of your horns, so I'd be interested in knowing if you've experimented with this.
And no neighbours on either side of house I guess
2. Having a look on the web at some of the info about the various Monitors it seems all models from Red to HPD used the same tweeter diaphragm:
http://www.44bx.com/tannoy/partnos.html
Is this correct even though Reds are 15ohm and the rest are 8ohm, and given the various different crossovers?
Am I right in saying that all tweeter diaphragms/modules are in principle interchangeable from Reds to HPDs?
By the way, your crossovers look really nice. How are the Yorks performing since you put them in.
What impact does alignment of the diaphragms have? Does this significantly alter the voicing of the unit itself?
OTD: I Am A Wallet - McCarthy
Tony, the moment I heard them open the album with 'An MP Speaks' I was smitten. Some of the best rhythm guitar since Marr IMO.