luvdunhill

does anyone know how to use the RSS thingy at HF to only subscribe to a few threads? I just want a listing of new posts in the few threads I care to monitor.

it's right here: http://www.youtube.com/watch?v=a7RiMG92gqQ

2 outta 3 is enough for me

I measured my Xono-ish clone on some fancy HP thingy they have here at work and it was around -83dB @ 1mV for MC and in the -90's for MM measured at 10mV. My cartridge is 0.24mV output... I used to have the numbers for the Klyne System 7 phono preamp and they were insanely low... even lower than say the Zyx Artisan which is ~95dB for MM

well, there are people out there that can implement switching supplies for audio, namely Ed Meitner... whether or not the benefit outweighs the potential problems, sir is the question!

I wish I had more time to write this post First, I really like the Thiels. In fact, I had a conversation with the man himself (well, two actually) about implementing mixed order crossovers in two pairs of DIY speakers that I'm working on (that never seem to get finished). His speakers embody all the concepts that I'm trying to achieve in my own design. However, this is the rare case (and stupid... I'm a mere mortal) of just not finding the perfect speaker and trying to do it yourself. However, this is a conversation for another day, and it is somewhat upsetting to me as these speakers have been sitting around half done for like 3 years. anyways, back on topic. I think the 2.4 is a huge step above the 2.3... I owned the 2.4 for about 6 months (~ eternity) The main difference i think is in the midrange coherency.. everything is so seemless sounding and effortless. This might sound minor, but it's huge in my book. The only complaint of the 2.6 is it seems like there is a sort of over-detailed-ness, which is hard to describe... (well, I can describe it but it will probably de-rail this conversation... it's like today's modern upsampling / oversampling DACs) ... I really like detail, but it seems that the 2.4 create detail outta nowhere, especially in the 440 Hz -> 2kHz range (i.e. upper violin range)...perhaps this is what Tom is alluding to, perhaps not. Some might call it brightness, but it's a bit different than that I think. All this to say, I really like the Quatro and if you're at all hesitant about the Theils and think "hm, something's not right here, but I don't know what it is" then you owe yourself a listen, in my opinion! I've listened to both the woody and non-woody (the latter in my home) and have to say they sound phenomenal once they get dialed in. Another speaker to consider if you have the cash, is Roy Johnson's speakers (Green Mountain Audio) or if you're looking to save some cash, the now defunct Meadowlark or the Vandersteen 2ce / 3a etc. "budget" options.

Hey! Thanks for the ewview! I've owned these and a few other Theils down the line... The tipped up treble is usually due to the smaller sweet spot and directivity due to the lobing that occurs when (quasi-)first order slopes used in the crossover. When you're in the sweet spot though, it's really amazing. I know this is a review and you're not looking for opinions, but if you would indulge me for a second, I'd recommend listening to the Vandersteen Quatro speakers. Everything you liked about the Theils is times 10 in my opinion, the sound stage is immense and the detail is pin-point... then there is the bass... gotta run, but the Vandy's are worth a listen IMHO...

ah. The MC section is basically the same as the Xono I believe. Anyways, a great design by Wayne Colburn

I use a Nitty Gritty 2.5 FI with Pure 2 cleaning fluid. I've owned the budget and second from budget VPI cleaners as well as the Disc Doctor manual brushes (i.e. no vac, air-drying) and fluid. For me, the NG and Pure 2 was a huge upgrade over the VPI cleaners and various other solutions. The real comparison between all these cleaning methods was playing a "clean record". My Zyx uses a line-contact stylus (6 x 35 um).The amazing thing is how much crap it can pull from the grooves even after the VPI or manual methods. I agree, the less cleaning the better!

... and one other question. By upping the +- 400v rails, do I need to make sure I change the components required to keep the 300v, 350v, and 380v reference voltages on the schematic, or will these values become -100V, -50V, and -20V with respect to the new rail voltage?

I'm working on a Mouser part list and mods for this project, if you're interested: http://www.vinylengine.com/diy-strobe.shtml I'd recommend waiting until after I order the parts and find out that something doesn't fit With primo stuff, I'm looking at $15 total

I wasn't going to get that extreme! I was just going to buy a bunch of the 450v and put them in series and stick them on 500-550v rails, instead of buying the 900v parts. So, 10m45s 2 in series * 2 per board * 2 boards with 500-550v rails. Looking at the 10m90s datasheet, it seems that you can get 100mA per device, so would sticking them in parallel get up to 200mA total? or is this one of those things that the datasheet doesn't tell you, i.e. 50mA per device is what you can get in the real world? Looking at the 10m45s graph on the last page, it seems that you can get over 100mA per device, like in the 400mA range, but at the top of the spec sheet it clearly lists 100mA... any idea which is correct? of course, all of this is assuming lots of heatsinking thanks again!

Elephas: I can check it out for you if I can get a pin out of the adapters. Also, remember that the BH connects the the cathode to G3 (suppressor grid)... personally, I wouldn't plug anything in until someone looked at the datasheet and the proposed pin out.

I'd invest in a few setup tools. see here: http://www.turntablebasics.com/ I'd get the alignment / overhang mirror and a bubble level. Next, perhaps a stylus force gauge. These are nice, perhaps you can talk the seller down a bit: http://buy.audiogon.com/cgia/cls.pl?anlgcart&1201789984 As for a budget cart, I'd recommend a Denon DL-103: http://buy.audiogon.com/cgia/cls.pl?anlgcart&1203348006 and a Bugle phono stage kit: http://cgi.ebay.com/Hagerman-Technology-Bugle-Phono-Preamplifier-Kit_W0QQitemZ190186910346QQihZ009QQcategoryZ12050QQssPageNameZWDVWQQrdZ1QQcmdZViewItem yup, I recommended hundreds of dollars but you'll get a great cartridge and a great phono stage out of it.

KG: Is it possible to put two IXCP10M45S in series and get double the current, but the same voltage rating as a single IXCP10M90S? I don't see why not, but figured I'd ask.

x2 the price point is bellow the new and improved BH as well. I'm betting the old BH amps will just increase in price, especially if the Black Gates stay out of production. I guess KG or Justin could comment the BHSE versus the BH as a teaser

is this the newer version that's MC/MM or MM only? They're both great designs, I've built both

or at the bare minimum, incriminating pics!

my biggest complaint about Audiogon is all the lamerz... if you're selling something below $1000 expect to get all kinds of tire-kickers. It's like being at the dirt market in Beijing... frackin annoying if you ask me.

I really love the look and feel of these enclosures. I have been battling with a similar thing with the hifi2000 cases. In my opinion, they look great, but the top and bottom are steel and the sides and panels are aluminum. What I ended up doing with my KGSS is coupling the PCB to both the top and bottom of the case. This made a huge difference. I used a 1.5" female->male hex standoff under the board, then a 1/16" hard plastic washer than a 1.5" female->female hex standoff on top of the PCB. Granted, a custom case would be much nicer, but this was a simple DIY fix Maybe one day I'll try a copper bottom / top I'm going to try FPE new "design-a-case" for my DIY BH, and we'll see how that goes. Hopefully I can measure the board holes properly... that's what I'm working on now.

Quote from: justin on Today at 02:09:09 PM ... The 1st 2 stages will become a small surface mount module Quote from: spritzer ... Sounds great.

justin: My vote is to try the Analog MAT02 for the front end. I think it sounds fantastic, if you lower the input impedance a tad. I cannot get any LSK devices, or I'd love to try them... Linear just ignores me :( I thought Newark was picking up the entire Linear line, but they don't seem to be selling them ... sigh... Also, this is strange (perhaps Kevin can comment) but in the KGSS it seems that the 2sa1156 positions sound better when closely matched. I matched all of my transistors like +- 2 hfe across both channels (yes, I had a lot of devices and even more spare time).. I swapped out the 2sa1156 for some 2sa1968 that weren't matched at all and then played around with a matched pair and went back and tried unmatched 2sa1156... i swear I could tell the difference... very strange.

yup, I've built one of those

my KGSS supply is dual mono... it's adjustable to 500 V. I'll keep you posted I will have pabbi1's BH to compare with once it gets done.