Hi, I'm looking for a good Amp/DAC combo for my HD800S. the amp/DAC will be fed by an Oppo UDP-203, which already has a decent sounding DAC circuitry - the AKM AK4495. I am therefore not definitely saying that I need a DAC, but as Oppo will be releasing the UDP-205 with a ESS Sabre 9038 sooner...

I finally got around to recable my bass-light K340 with some pea**** mkII cable (weeee censored out) and it really improved everything to a new level, especially when the XO was bypassed. They're excellent! I still need a little more bass though... i removed the cotton, so the cups are empty...

Hello, I need to know how to calculate the output impedance of opamps, esp in cloed-loop mode. I can measure it at any frequency, and calculate and measure input impedance of a closed loop circuit. output impedance/resistance of the given opamp (TL071) is not available in the data sheet -...

Hi The portable devices which include an FM tuner all use the headphone cable as the antenna, but can the signal reception generally be improved in some way? I'm using a S/E W810i that has a tuner which is already quite decent, but i'm wondering if replacing the antenna cord that the...

It's used in other productions than Disney's Beauty and the Beast, but i'm interested in knowing who wrote it? I don't thin this can be Alan Menken? http://www.amazon.com/gp/music/clips...071423-2135303 it starts at 0:26 http://www.amazon.com/gp/music/clips...071423-2135303 sounds very...

Hi, I haven't used a great deal of pot types (no pun intended), and it seems like the ALPS RK097 has a flat shaft? The overall diameter is still 6mm, but would normal 6mm knobs like this one still fit tight? http://www.elfa.se/elfa-bin/dyndok.p...ok=2006781.htm TIA

This was also posted at Diyhifi.org, but replies does not happen as rapid as it sometimes does here, so....: I have read a lot of information about the flaws of many current SPDIF connections and trasceiver construction. I'm about to upgrade a S/PDIF input because as it currently stands, the...

Hi, i'm currently looking into making a digital output on a laptop, so it has to be rather small. Guzzler's design looks good (PCM2902 reference ?), but i', thinking that having a balanced digital output through XLR would be nice.... Does such a design for USB exist ? Does anyone have a hint of...

Hi, I'm trying to make some RMAA measurements for my external DAC, but the output level is not high enough to be accepted by RMAA. What to do ? Here's the test chain: RME Digi 96/8 pad toslink out -> AQVox DAC, no resampling, 128 Fs oversampling, digital filter=flat. -> RCA out to TRS jack...

Hello, I just got a great idea (seen from a crazy person's point of view). I want to improve the sound quality of my laptop, but i want to upgrade the internal speakers! I am not sure what kind of speakers laptops currently use today, but i think 1W, 8ohms is about right, hence headphone...

Hi, This is the circuit. Nevermind what you see after the transistor at the top, since that is not what the question is about. I need to control - that is turn the circuit on, so that the 5V present at the collector goes all the way through the emitter. So this needs to act as a switch...

Well, I'm trying to contact a company in Germany near Hamburg, but they don't respond to mails. At which interval of dates is it autumn holiday /autumn mid-term in the Hamburg area ? What about Munich ? Is it normal that a very small online company (ebay type) has an autumn holiday in...

Hello... I hope posting this isn't frowned upon... Is this really real ? Why would he sell for $800 when it's brand new ? - How do you know that these laptops aren't stolen ? http://cgi.ebay.com/NEW-IBM-Thinkpad...QQcmdZViewItem Does this "when it looks to good to be true, it is"-saying...

Question is: Will the circuit below even work, i.e. is it constructed properly ? i need to construct a circuit for recharging a battery (Nimh, 1.2V AA or AAA cell) using inducted current created by an electromagnetic field. this field is created by two simple handmade coils, and a AC power...

Hello, Now i've heard this same piece of music again - but i think it was only in cartoons and the sort - i saw an oldie from warner bros. today where a vinyl containing this piece of music was labeled "The sunshine bros. - The Storm". Didn't help me much. In 1935 Disney made "The band...

As in title, is there any way to remove intermodulation distortion - i am thinking about the large increase at the 50-70 Hz mark here: http://audio.rightmark.org/test/rme/...gi3296/imd.png What causes that distortion ? Since it is a 50-60 Hz distortion, is it because of interference from...

I'm making an in-line volume control for these active monitors which are used in unbalanced mode: http://www.esi-pro.com/viewProduct.php?pid=50&page=1. Therefore the input impedance is just 10 kOhms it seems. The inline volume control is just going to be a potentiometer, but I am not sure...

Ok, this is a gift for someone.... The gift is a pair of ESI nEar 05 studio monitors. The site with manual is here: http://www.esi-pro.com/viewProduct.php?pid=24&page=1 I'm unsure of how to connect it to a soundcard with a mini stereo jack output. I will be using the jack inputs on the...

It seems like DAB (Digital Audio Broadcasting) is a pretty quiet area when it comes to DIY - why is that ? Does anyone know of a schematic for a complete DAB radio/tuner ?

I'm currently assembling my SDS labs headphone amp into a box, but I just thought about something.... would it be better to have the volume pot before or after the crossfeed circuit. I have these possibilities - what is best ? a) Volume control -> Crossfeed -> Amp b) Crossfeed -> Volume...

Hi couldn't find a proper answer to this. I thought this might be the best forum for this, not sure.... I'm just wondering (oh no...) : 1. Is the performance of a through-out balanced system to be considering something like the last 3% of the sound compared to a completely single-ended...

My new HD650s have been burning in for about 80 hours now and to be honest they sound pretty bad. There are still a lot of areas where I prefer the HD25-1. The best way to describe how the HD650 currently sound is boomy, baloony, congested mids, with slightly congested bass with good extension...

Hey, I was wondering which type of cable could be used on the sennheiser plugs - i.e. will it matter if I use two non-shielded cables (and twist them), or must I use a shielded mono cable and use the shielding for the other connector on the plug ? This is for unbalanced use btw. Example of...

More or less, i've read most information and impressions of the HD650, but I still think that this wasn't covered very well, (potential buyer here) : Considering the HD650 in a well-amped system: - Is the HD650 a forgiving headphone that goes well with today's less well-produced pop music ...

Hey, Does anyone know the recipe of an Italian bisquit called Canotti, or atleast that is the brand maybe. It's very addictive (but only available in small bags. Saddly I threw the bag they came in away a long time ago, i can olny remember the "Canotti" name. It's a hard crunchy bisquit...