mwhouston Posted November 8, 2019 Author Share Posted November 8, 2019 4 minutes ago, MattyW said: Hmmm, why do I not have the option to attach photos on SNA anymore? You can talk to mods to find out. I got locked out of resounding to posts for 8 hours today. Link to comment Share on other sites More sharing options...
RankStranger Posted November 8, 2019 Share Posted November 8, 2019 18 minutes ago, mwhouston said: You can talk to mods to find out. I got locked out of resounding to posts for 8 hours today. There was something screwy going on today. All the classified ads had zero view counts for the whole day, even with a few replies. The multiple post I messaged you about kept jumping to the end of the thread all day. Really weird. 1 Link to comment Share on other sites More sharing options...
MattyW Posted November 8, 2019 Share Posted November 8, 2019 I'm sure it will come good in time. Link to comment Share on other sites More sharing options...
RankStranger Posted November 8, 2019 Share Posted November 8, 2019 1 minute ago, MattyW said: I'm sure it will come good in time. No shade, no lemonade. Forums are hard. ¯\_(ツ)_/¯ It’ll come good. It just confuses the cr@p out of me when it goes wrong. 1 Link to comment Share on other sites More sharing options...
mwhouston Posted November 8, 2019 Author Share Posted November 8, 2019 (edited) 16 minutes ago, RankStranger said: There was something screwy going on today. All the classified ads had zero view counts for the whole day, even with a few replies. The multiple post I messaged you about kept jumping to the end of the thread all day. Really weird. I was told, electronicly that I couldn’t post for over 33000 seconds. Mods and tech said it was my fault and they had no way of fixing it. Then told to delete all web data and cookies. So I lost all my auto logins etc. And that changed nothing. Then told I had to wait out the time, about 8 hours. And all of this is because a post faulted. I guess they don’t know there are ways to rebuild a client file\data and reset it without loss of post counts etc. I did this stuff for 25 years. Edited November 8, 2019 by mwhouston Link to comment Share on other sites More sharing options...
mwhouston Posted November 8, 2019 Author Share Posted November 8, 2019 6 minutes ago, RankStranger said: No shade, no lemonade. Forums are hard. ¯\_(ツ)_/¯ It’ll come good. It just confuses the cr@p out of me when it goes wrong. That’s because no one is trained any more. I spent years learning the basics, building fileservers from scratch from high end parts and loading the OS then tweaking it. No one has these skills any more. Link to comment Share on other sites More sharing options...
RankStranger Posted November 8, 2019 Share Posted November 8, 2019 7 minutes ago, mwhouston said: That’s because no one is trained any more. I spent years learning the basics, building fileservers from scratch from high end parts and loading the OS then tweaking it. No one has these skills any more. I’m not a programmer but I’d presume that’s because the money is perceived to be in front end apps, not infrastructure. Link to comment Share on other sites More sharing options...
planet10 Posted November 8, 2019 Share Posted November 8, 2019 8 hours ago, mwhouston said: It does appear single drivers and SE tube amps are common. Nice and simple. It is the case that many high efficiency speakers are designed to be used with higher output devices. We know this is in particular true with the Fostex FExx6 series (we asked the designer). Many higher end ones follow this same route. Because there are no XOs and imedance is much flatter (and often complementary), higher impedance amplifiers can find a home. dave Link to comment Share on other sites More sharing options...
planet10 Posted November 8, 2019 Share Posted November 8, 2019 5 hours ago, MattyW said: Only about 5 hours on the Fast-10 drivers so they'll just keep getting better Typically break-in on the better FRs is closer to hundres of hours than 10s. dave 1 Link to comment Share on other sites More sharing options...
planet10 Posted November 8, 2019 Share Posted November 8, 2019 5 hours ago, aussievintage said: Here's another of my single driver speakers. These are commercially built by Akai. Those Akai have a particularily nice version of the FE103A class driver, there were many* manufactures doing a 4” FR for the same OEM box holes. * At one point i had 24 different variations all together at the same time. These drivers, in my experience, are best in Aiko (a small-big Woden horn — here w FE108e∑eN): dave 1 Link to comment Share on other sites More sharing options...
aussievintage Posted November 8, 2019 Share Posted November 8, 2019 3 hours ago, planet10 said: Those Akai have a particularily nice version of the FE103A class driver, there were many* manufactures doing a 4” FR for the same OEM box holes. * At one point i had 24 different variations all together at the same time. These drivers, in my experience, are best in Aiko (a small-big Woden horn — here w FE108e∑eN): dave Interesting, thanks Dave Link to comment Share on other sites More sharing options...
aussievintage Posted November 8, 2019 Share Posted November 8, 2019 8 hours ago, RankStranger said: There was something screwy going on today. All the classified ads had zero view counts for the whole day, even with a few replies. The multiple post I messaged you about kept jumping to the end of the thread all day. It looked, to me, like the clock was wrong for a while, and some things got posted "in the future". 1 Link to comment Share on other sites More sharing options...
aussievintage Posted November 8, 2019 Share Posted November 8, 2019 9 hours ago, mwhouston said: Triple threat. Nice. Threat? 1 Link to comment Share on other sites More sharing options...
mwhouston Posted November 8, 2019 Author Share Posted November 8, 2019 26 minutes ago, aussievintage said: It looked, to me, like the clock was wrong for a while, and some things got posted "in the future". I messaged SNA but they said there was nothing wrong with my account and there was nothing they could do. To their credit they did try. Link to comment Share on other sites More sharing options...
mwhouston Posted November 8, 2019 Author Share Posted November 8, 2019 26 minutes ago, aussievintage said: Threat? Just a term. 1 Link to comment Share on other sites More sharing options...
aussievintage Posted November 8, 2019 Share Posted November 8, 2019 9 hours ago, MattyW said: why do I not have the option to attach photos on SNA anymore I saw that asked elsewhere. One response mentioned a max quota (500MB) for attachments. If it doesn't come good, check that out. 1 Link to comment Share on other sites More sharing options...
mwhouston Posted November 8, 2019 Author Share Posted November 8, 2019 Who has tried baffle step corrections (BSC). I have and tested the result with the 8” Fostex in the BLH. What the testing showed was a 2db drop through the mid range. Bass and treble stayed as is but there was a flattening of the mid range. I did read some time later that it can reduce dynamics and ultra light coned drivers are usually very dynamic. One article I read from a professional reviewer said that they removed the BSC some time after and felt the sound better. Ive only ever used the simplest of BSCs which is an inductor and with a resistor across it. I have seen far more complex ones but I try always to keep things simple. There is a formula for calculating the BSC. Link to comment Share on other sites More sharing options...
mwhouston Posted November 8, 2019 Author Share Posted November 8, 2019 (edited) If you wanted to give a single driver speaker a go and didn’t want to pay a lot, Altronics has this wide range 4” twin cone driver. I have a pair of these to go in some wine box speakers to match my wine box SE UL amps. https://www.altronics.com.au/p/c0635-100mm-15w-8-ohm-high-efficiency-paper-cone-speaker/ Why this one you ask. It’s very sensitive at 92db. I wouldn’t expect too much from it but could be a novel build to go with a SET amp or SE UL amp. Or even low power Class D. Using an an online box calculator a small box could be designed and porting calculated. I’ll post the link for the calculator. http://www.micka.de/en/ Edited November 8, 2019 by mwhouston Link to comment Share on other sites More sharing options...
THOMO Posted November 8, 2019 Share Posted November 8, 2019 This $14 driver from Altronics sounds nice and works well on an open baffle.I prefer it to the sound of most wizzer coned drivers I have heard -including Philips, Fostex ,Coral and Lowther.It actually has a bit of the Goodmans Axiom 80 sort of sound which is by far the best of that type of driver I have heard. Of course the underlying appeal with these devices is an accentuated presence range .Not accurate but that is probably not the point. 1 Link to comment Share on other sites More sharing options...
mwhouston Posted November 8, 2019 Author Share Posted November 8, 2019 1 minute ago, THOMO said: This $14 driver from Altronics sounds nice and works well on an open baffle.I prefer it to the sound of most wizzer coned drivers I have heard -including Philips, Fostex ,Coral and Lowther.It actually has a bit of the Goodmans Axiom 80 sort of sound which is by far the best of that type of driver I have heard. Of course the underlying appeal with these devices is an accentuated presence range .Not accurate but that is probably not the point. They have a few do you have their part number? I may design a box around it to see bass extension. Link to comment Share on other sites More sharing options...
aussievintage Posted November 8, 2019 Share Posted November 8, 2019 That Altronics driver only goes to 14kHz. That's a little low for me. Link to comment Share on other sites More sharing options...
THOMO Posted November 8, 2019 Share Posted November 8, 2019 (edited) Part number is C200A. As used in the Straight 8 project discussed here a few years ago. I think one with an open baffle 15 inch woofer to do bass would work well. I tried 4 on an open baffle H frame and that sounded pretty good.Then I ruined it by removing the wizzer cones off the bottom two . Edited November 8, 2019 by THOMO 1 Link to comment Share on other sites More sharing options...
aussievintage Posted November 8, 2019 Share Posted November 8, 2019 https://www.altronics.com.au/p/c2000a-redback-200mm-8-inch-8-ohm-10w-dual-cone-pa-speaker/ yeah, better response on this one 1 Link to comment Share on other sites More sharing options...
aussievintage Posted November 8, 2019 Share Posted November 8, 2019 (edited) Datasheet https://download.altronics.com.au/files/datasheets_C2000A.pdf Edited November 8, 2019 by aussievintage Link to comment Share on other sites More sharing options...
aussievintage Posted November 8, 2019 Share Posted November 8, 2019 10 minutes ago, THOMO said: This $14 driver from Altronics sounds nice and works well on an open baffle.I prefer it to the sound of most wizzer coned drivers I have heard -including Philips, Fostex ,Coral and Lowther.It actually has a bit of the Goodmans Axiom 80 sort of sound which is by far the best of that type of driver I have heard. Of course the underlying appeal with these devices is an accentuated presence range .Not accurate but that is probably not the point. The construction is very like the old Rola and Magnavox 6 and 8" drivers I have tried in the past. Results are usually quite good with these types of drivers. 1 Link to comment Share on other sites More sharing options...
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