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- Users: johnmatrix
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Zapfilter 2 Questions
I recently bought a zapfilter mk2 for my denon and I am having trouble with the power supply. I went online to look at the connection diagram and it was useless. The wire colors did not match the transformer I have. So I was wondering if someone had recently installed a zapfilter mk2 and...- johnmatrix
- Thread
- Replies: 1
- Forum: DIY (Do-It-Yourself) Discussions
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Grounding Issues
One of the problems of upgrading is the better equipment reveals flaws in your system. When I switched the O2, I noticed a slight hum at a very low frequency and level. It disappears when I touch the interconnects or output jacks but not the cases. For my KGSS, I have grounded everything to the...- johnmatrix
- Thread
- Replies: 15
- Forum: DIY (Do-It-Yourself) Discussions
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Pioneer PD-D9j
My denon is slowly crapping out on me I was looking at players to mod in the 1300$ MSRP range. So far, I am deciding between the SA8001, 5900, and some sonys. I don't mind buying used and I have so far zeroed in on this player. I was wondering if anyone had any impressions or further suggestions.- johnmatrix
- Thread
- Replies: 1
- Forum: Dedicated Source Components
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KGSS Transistor Wiring Question
I have most of my KGSS built with the power supply operational and I have one last question. I went with the MAT02 dual bjt as apposed to the dual fet used in the schematic as per a suggestion found in the addendum. I was wondering how to wire this up. Right now, I have the base tied to the...- johnmatrix
- Thread
- Replies: 7
- Forum: DIY (Do-It-Yourself) Discussions
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Custom Transformer for the KGSS
I was wondering if you guys knew of any good custom transformer manufacturers. I have been trying to get one made for the KGSS for the past month and I am still no where with Victoria Magnetics. Ideally, I would like to stay under <$200 if that is possible. It is the last piece of the puzzle and...- johnmatrix
- Thread
- Replies: 15
- Forum: DIY (Do-It-Yourself) Discussions
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Pot and Cap Questions
I am building a KGSS and had a few questions on some parts I ordered. The caps I am using are munudorf 100+100uf which came with two positive leads. I was wondering how to solder these to the circuit. I figured that tying the two leads together would be the way to go. For my volume...- johnmatrix
- Thread
- Replies: 5
- Forum: DIY (Do-It-Yourself) Discussions
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Channel Imbalance in my Denon 2900
After attending a meet, I discovered that my denon had a channel imbalance which turned out to be a blessing in disguise. I made some more modifications to the board with wonderful results. The initial channel imbalance was caused by a broken lead which I quickly fixed. I also bypassed all the...- johnmatrix
- Thread
- Replies: 0
- Forum: DIY (Do-It-Yourself) Discussions
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Koss ESP-950 Impressions and Questions
After the recent spat of problems with my Sr-X, I grew tried of constantly fixing them and I went from looking for the parts for a KGSS to a new phone. I heard the 404s at a meet, but was not impressed. So instead I went for a less well known quantity, the Koss e-stats. I managed to pick these...- johnmatrix
- Thread
- Replies: 11
- Forum: Headphones (full-size)
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My Denon 2900 troubles and new source
Recently, I undertook the modding of my Denon 2900 which was purchased in March '06. I wanted to lower the noise floor and enchance its sonic capabilities. I replaced several capacitors in the PS and replaced the opamps in the output stage. Before reinstalling the PS, I double checked all the...- johnmatrix
- Thread
- Replies: 21
- Forum: Dedicated Source Components
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KGSS Bais Supply questions
I am currently looking into building a KGSS for my SR-X phones and in the future a SR-007. This requires building a KGSS with normal and pro outputs. I was thinking about doing this by wiring the bias supply directly to the pro jack and having the supply connected to a voltage divider before it...- johnmatrix
- Thread
- Replies: 10
- Forum: DIY (Do-It-Yourself) Discussions
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KGSS or BH?
As you can see in my sig, I own a pair of stax phones. I am finishing up an electronics course for my Chem PhD. I build a lot of circuits and do some soldering. The lab is quite painful(20+ hours/wk for 2 credit hr) and I thought I would use my hard won knowledge to build an electrostatic amp. I...- johnmatrix
- Thread
- Replies: 7
- Forum: DIY (Do-It-Yourself) Discussions
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Pre-amp
I use a speaker amp to power my stax but the gain on the amp is too high. So I am in the market for a pre-amp. I am looking for something transparent and neutral. I don't want color to the sound. Of course, the cheaper it is the better. I am willing to go used and I am currently looking at a...- johnmatrix
- Thread
- Replies: 0
- Forum: Cables, Power, Tweaks, Speakers, Accessories (DBT-Free Forum)
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Some ESL
I was in the market for a new set of speakers and was looking at Magneplanar MMG's, ESL, or some Paradigms. I still need to hear the MMG's and an ESL, but I love my dad's studio 20s. However, I also love my stax Sr-X mk III and I was wondering how Acoustat monitor III's or some used finals...- johnmatrix
- Thread
- Replies: 7
- Forum: Cables, Power, Tweaks, Speakers, Accessories (DBT-Free Forum)
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My New K340
I recently saw a pair of k340's on ebay for under 200 and decided to pick them up. I figured it has been over a year since I joined and I have not bought into a FOTM yet so why not. I have to say coming from the jack on my reciever and it is have no trouble driving them. These sound as good...- johnmatrix
- Thread
- Replies: 18
- Forum: Headphones (full-size)
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Super T-Amp vs Panny Digital
I was thinking of upgrading the my reciever because it is the one thing now holding me back in the audio chain. A few months ago after reading the AVS forums, I bought my parents a panasonic digital amp to power their paradigm studio 20's and I loved the sound. It powered the studio 20's with...- johnmatrix
- Thread
- Replies: 33
- Forum: Cables, Power, Tweaks, Speakers, Accessories (DBT-Free Forum)
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Stax Sr-X Mark III Impressions
I just recently purchased the Stax off ebay. I had been interested in e-stats since hearing some at Thrice's meet last year. When I recieved these today, only the earpads were in bad condition. I have already ordered replacements from audiocubes. My Sr-X are powered by a SRD-7/SB from a Kenwood...- johnmatrix
- Thread
- stax-srd-7-sb stax-sr-x-mark-3
- Replies: 222
- Forum: Headphones (full-size)
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Denon 1500 II Quick Impressions
I recently picked this up from ebay for 75 shipped after reading some favorable impressions on here. I was looking for a cheap high quality source and this seems to fit the bill. After opening the box it came in, I placed a cd in and moved the tracks around. The player kept up well with about 1...- johnmatrix
- Thread
- Replies: 6
- Forum: Dedicated Source Components
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DVD Audio Playback
I got my emu 0404 over the holidays and I was looking into better source material for my new soundcard. I decided to try dvd-a and I was wondering what is the best way to play it back on my computer.- johnmatrix
- Thread
- Replies: 8
- Forum: Computer Audio
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New Portable Amp
I am looking to upgrade from my CMOY and was thinking about a Cha-47 amp or a mint. But with the mint amp being replaced soon with the PINT, I was thinking about building a PINT. The Cha seems like it would be a good match for my um2s, but is there any other amps that would be relatively...- johnmatrix
- Thread
- Replies: 0
- Forum: Headphone Amps (full-size)
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Rig Upgrades
This christmas I was looking to upgrade my computer speaker system in my sig below. I want to install an emu sound card and upgrade the reciever. I was thinking of going to the panasonic SA-XR55 or 70 and using the optical out on the emu to the panny. Does anyone have any other suggestions...- johnmatrix
- Thread
- Replies: 0
- Forum: Cables, Power, Tweaks, Speakers, Accessories (DBT-Free Forum)
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HE60 petition
For all those who like a repeat of the HE90 limited run with a the HE60 run, here is an address below for an online petition. Maybe if enough sign senn might do a reissue. address: http://www.petitiononline.com/SennHE60/petition.html- johnmatrix
- Thread
- Replies: 45
- Forum: Headphones (full-size)
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Headphone Listening
Has headphone listening changed the way you hear? For me it has. With my um2s, I realized I was not listening with my left ear as critically as my right. Which is strange, because I am a leftie. Now I am rediscovering all my music and enjoying details I never heard before.- johnmatrix
- Thread
- Replies: 4
- Forum: Headphones (full-size)
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New CDP
My pcd was stolen and I am looking for a new one. I looking for something around $60-80. I was looking at a Bose(I know) for its ability to turn off the antiskip. Is there any other players that have this feature or simply sound good enough without it?- johnmatrix
- Thread
- Replies: 2
- Forum: Portable Source Gear
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Long Um2 review
I came on head-fi in Jan of ’05 looking for a new pair earphones for my iriver h320 and I bought the er-6 after much deliberation. I loved them! The first time I put these on it was a slap in the face. After some more reading, I thought an amp would help. So, I bought a cmoy off ebay. Another...- johnmatrix
- Thread
- Replies: 5
- Forum: Headphones (full-size)
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New Um2
I just recieved my new um2 and I am loving them. However, they are a little noisy from my H320 even at a volume of 5. Is there anything other than an 120 ohm adapter or p->s cable that would help. Something I could most likely pick up locally would be nice(I don't want to wait!). Also, I...- johnmatrix
- Thread
- Replies: 15
- Forum: Headphones (full-size)