Search found 2194 matches

by chris661
Thu Mar 14, 2019 8:41 am
Forum: Speakers
Topic: Something stirs in the Undergrowth
Replies: 2319
Views: 292307

Re: Something stirs in the Undergrowth

I can't comment on "dead and lifeless" with regards to the Ariels specifically, but I do wonder if the amplification used was hindering them.
I guess the only way to find out would be to bring them to Owston!

Chris
by chris661
Wed Mar 13, 2019 2:43 pm
Forum: Speakers
Topic: Something stirs in the Undergrowth
Replies: 2319
Views: 292307

Re: Something stirs in the Undergrowth

Nick wrote:
Wed Mar 13, 2019 12:08 pm
"current reserve". Low Zout, and a power supply you can weld with
Are they basically not the same thing, the ability to deliver current into the load?
I was wondering that myself.
Can Zout change under heavy loading?

Chris
by chris661
Wed Mar 13, 2019 11:55 am
Forum: Speakers
Topic: Something stirs in the Undergrowth
Replies: 2319
Views: 292307

Re: Something stirs in the Undergrowth

I think we concluded that it was "current reserve". Low Zout, and a power supply you can weld with - there are 2x 15,000uF, 110V caps per channel on the Crown amp we liked (MA5002VZ). The newer one (MA12000i) wasn't as good, although that could be down to running right down in the noise of such a po...
by chris661
Wed Mar 13, 2019 9:23 am
Forum: Speakers
Topic: Something stirs in the Undergrowth
Replies: 2319
Views: 292307

Re: Something stirs in the Undergrowth

Thinking back to the meet we had at Steve's a while back, the "dead and lifeless" could simply have been a lack of grunt from the amplifier. The Fanes came to life more, particularly in the bass and with big dynamic swings, when a large amplifier was connected. A complex multi-way driven by a single...
by chris661
Mon Mar 11, 2019 9:37 am
Forum: Speakers
Topic: Speaker Project for 13E1 amplifier
Replies: 8
Views: 286

Re: Speaker Project for 13E1 amplifier

Chris, thanks for the offer but I'll pass on the Faitals - I don't think they quite suit my thinking or the constraints presented by only having a couple of Watts to play with. Fair enough. They do have usefully high sensitivty, and exceptionally low distortion, which is why I thought I might menti...
by chris661
Sat Mar 09, 2019 11:35 am
Forum: Speakers
Topic: Speaker Project for 13E1 amplifier
Replies: 8
Views: 286

Re: Speaker Project for 13E1 amplifier

I just so happen to have some 16ohm Faital Pro 10FH520 drivers here. I keep thinking about attempting a compact bass module for PA use*, but I'd be as happy to sell them. PM me if you're interested. They'd get pretty low in an ML-TL, and are clean and smooth out to about 2kHz. *Being 16ohm, it's dif...
by chris661
Tue Mar 05, 2019 8:18 am
Forum: Speakers
Topic: Something stirs in the Undergrowth
Replies: 2319
Views: 292307

Re: Something stirs in the Undergrowth

It gets messy, because they are in series ( partly to replicate what James had with the 16 ohm AER's ) and the cap size in the series crossover is smaller as a result, so the crossover wouldn't work right Hi Mark, Worth a quick read here: http://sound.whsites.net/parallel-series.htm#s12 Series cros...
by chris661
Mon Mar 04, 2019 5:41 pm
Forum: Speakers
Topic: Something stirs in the Undergrowth
Replies: 2319
Views: 292307

Re: Something stirs in the Undergrowth

What happens if you disconnect one of the FX120s?
Just wondering if cancellations are the issue.

Chris
by chris661
Fri Mar 01, 2019 10:00 am
Forum: Speakers
Topic: Speaker Motors
Replies: 29
Views: 889

Re: Speaker Motors

But how is that better than just using a 8R resistor? If you used two identical speakers in series, you've doubled the impedance seen by the amplifier at all frequencies. Perfect potential divider. If you put an 8ohm resistor in series with a speaker, you've added 8ohm where sometimes the speaker's...
by chris661
Mon Feb 25, 2019 9:42 pm
Forum: Assorted Stuff
Topic: Owston '19 what are you bringing
Replies: 15
Views: 522

Re: Owston '19 what are you bringing

3. Nils Lofgren - Keith Don't Go (acoustic guitar version of course) :blackeye: That record sounds good on basically anything. If I was a HiFi salesman, that's one of the demo pieces I'd pick for sure. For really getting to grips with a system, I'd want something reasonably demanding. Like the Meta...
by chris661
Mon Feb 25, 2019 7:40 pm
Forum: Speakers
Topic: New 18" speakers.
Replies: 17
Views: 480

Re: New 18" speakers.

The search term for those cabinets would be "ripoles". Sort of like a folded-up OB. Gives you a bit of extra path length (and slot loading), but they start to get weird above a few hundred Hz - bear in mind you're effectively listening to the 90-degree off-axis response of an 18" cone. Drivers look ...
by chris661
Wed Feb 20, 2019 7:17 pm
Forum: Valves
Topic: For high-power enthusiasts
Replies: 6
Views: 383

Re: For high-power enthusiasts

Serious power there. I think you'd struggle to run it on a domestic (~100A) supply. A 63A 3-phase would have a fighting chance.

Is it bad that I want to grab a few of these for PA use?

Chris
by chris661
Sat Jan 19, 2019 12:33 pm
Forum: Speakers
Topic: Speaker help required...
Replies: 12
Views: 700

Re: Speaker help required...

It's difficult. Even if you can find something that matches the original specs, you can pretty much guarantee that the surviving driver won't have the same specs after however many years of "break-in". What is the driver you're hoping to replace? It's not just T/S parameters that need matching up - ...
by chris661
Sat Jan 12, 2019 12:04 pm
Forum: Headphones
Topic: House sound?
Replies: 7
Views: 1430

Re: House sound?

If there are any audio/DJ/music shops nearby, they're usually happy to give you a demo.
FWIW, I tried out some Shure SRH840s in a shop and couldn't leave without them.

Chris
by chris661
Tue Jan 08, 2019 9:16 pm
Forum: Assorted Stuff
Topic: Nothing In Particular
Replies: 10254
Views: 633472

Re: Nothing In Particular

Hi Mark, Yeah, the ~6.5kHz peak does need a precision strike. I found with that notched, they were pretty good full-range. Handing off to a dedicated tweeter does seem to improve things, so I think you're on a good track there. Let us know how you get on. The number of permutations my stereo has gon...