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mod

  1. S

    Technics SU-Z990 SVI3105A pinout mapping for TDA7294 mod

    Hi, I was thinking about replacing my original power ic which was faulty with the TDA7294 but dont know where on the board to solder wires to i was looking for pinout of the original SVI3105 power ic. if anyone would know please reply.
  2. plavatar

    My major Minimus 7 Zilch mod mod v1

    I took an unfinished, 25-yr-old design from a stalled business and scaled it down for the Minimus 7. It took me 2 weeks, from sitting down to get serious, to completion. I Zilched the crossovers: And came up with my own setup: And it fits well in the enclosures: The right and left...
    • plavatar
    • Thread
    • crossover diy minimus 7 mod zilch
    • Replies: 15
    • Forum: Speakers
  3. SamySquirrel

    My open back Harx-700 Mod, removable cable, and earpads

    HEY EVERYONE!!! Its me again, SO this is another ludicrous mod of mine but this headphone sounds 10x better that how it was originally!!!!! I did the mandatory earpad mod, removable one sided cable mod, and recentley tody I cut vents in the back and added wire mesh to make them open-backs, the...
  4. Mrcoolest123

    Pioneer DT-400 MOD

    Hey guys. I have been rearranging my components a lot lately for cosmetic reasons and had to unplug my timer various times. I got a pioneer DT-400 for a nice bargain and the little thing has been part of my hifi system ever since. I love the machine, but having to reset the clock every time...
  5. Doug Robert

    Genesis 1 W/cone in center of woofer? Looks modded?

    Picked these up today at a thrift store, (well my dad did after scouting em out for me lol, I love that man so much) and upon doing some research on them when I got them home, I couldn't find any that have a woofer similar to mine. Anyone ever seen one like this or know the pros/cons of the...
    • Doug Robert
    • Thread
    • 1 dome genesis horn mod model physics speaker tweeter
    • Replies: 39
    • Forum: Speakers
  6. plavatar

    P2250 upgrade ideas and preamp recommendations?

    I upgraded from my AX-596 to a P2250 this weekend (using an HTR-5960 as a pre on both). So far, the P2250 is a big upgrade. Testing on my Polk Monitor 12 will continue tonight =) So. - Any mods I should know about? I dd a cursory search and google, but nothing jumped out at me besides the...
    • plavatar
    • Thread
    • mod p2250 preamp question
    • Replies: 5
    • Forum: Yamaha
  7. KNielsen

    Aragon 4004 converted to MK.ll and maybe other mods

    Hey AK. I want to share this project as this might inspire others to either restore or make the fully rebuild. It should be mentioned that the Aragon 4004 in this thread is built by request, soo..... -some parts cannot be selected otherwise, as this is a request by the customer. The most...
    • KNielsen
    • Thread
    • 4004 4004mk.ii 4004mk.ll amplifier aragon aragon 4004 aragon 4004mk.ll mod modification restoration
    • Replies: 77
    • Forum: DIY
  8. sean sweeney

    Carver 1.0t Repair (variac issue? yes or no?)

    OK>>>> pretend I said TRIAC.... ugh... sorry I've done a fair amount of work on this, and did the complete MKII upgrade and attempted to set the bias and voltage, but the supply voltage came on at about 60v and then started to decline... I pushed the main voltage reostadt just a little and the...
    • sean sweeney
    • Thread
    • 1.0t carver fluctuating help mod power supply problem sag variac version ii
    • Replies: 2
    • Forum: DIY
  9. AstroZon

    Nintendo Gameboy Advance IPS Screen Mod

    I've built 2 of these so far. The IPS screen is so much better than the original TFT. It really makes the 20 year old system fun again. The only original part is the GBA motherboard, so you have to find a working donor (they used to be cheap but not any more.) The screen, ribbon cable/...
    • AstroZon
    • Thread
    • gameboy gba ips mod nintendo
    • Replies: 0
    • Forum: DIY
  10. CrazyEye

    Hardwiring Bluetooth 5v-24v module internally to a 2220B

    First post on here! I'm sure many of you will cringe at the fact of adding bluetooth to a vintage receiver However I've been wanting to do it for quiet some time now, I just recapped the entire receiver and had a lot of fun doing it. Everything is running right and voltages are in spec (or...
  11. S

    Polk Monitor 10 - recap? TL Mod? Advice needed, please

    Hey guys, I've got a pair of Polk Monitor 10 (or is it 10a? All I know it has the Peerless tweeters) I know that it's past time to change out at least the electrolytic caps in the crossover, but I need to find the schematic. I understand that some improvements can be made, changing electrolytic...
  12. Owndragon21

    Sony TA-F530ES West Germany model convertion to other version

    Welcome everyone, I have the Sony TA-F530ES West Germany version. Its very good solid amp and i like it. But i have heard that West Germany version has a few changes compared to other versions that makes it sound worse. I heard that it comes to one capacitor and resistor in preamp. I dont...
  13. P

    Marantz 4270 Frankenstein!

    Hey everyone! Hope you are doing great, got a set of 4270 amp modules with original pair of 50V /15000uF caps (marking great). As this is all I've got I would like to know if someone could give me a hand figuring out what should be done to get it working on 2x70W (don't want to use it as...
  14. KNielsen

    Acurus P10 phono stage mod/rebuild

    Hey AK I'm planning af full rebuild on my Acurus P10. One thing I've learned from my earlier amp project https://audiokarma.org/forums/index.php?threads/acurus-a250-and-starground.815860/ is that I'll prepare better this time:)... Meaning I wouldn't have to wait for new parts constantly, but...
    • KNielsen
    • Thread
    • acurus acurus p10 aragon aragon 47k mod rebuild
    • Replies: 31
    • Forum: Turntables
  15. mccuskerkt

    Rek-O-Kut Rondine 2 restoration thread (finally)

    A while back I started a thread about restoring my uncommon 1960’s era Rek-O-Kut Rondine 2 belt drive turntable. Well, I fell off the map and the original thread kind of spiraled out of control, so if at first you don’t succeed, try try again. There she is. A little dirty but was neatly tucked...
  16. Darrell Keim

    AR-XA Upgrade Pulley Question: Haydon Motor

    I just bought an AR-XA. Looks to be from 1972. Amost all original. I'm planning to do some tweaks, and am planning an upgrade path. The first I had hoped to do was the mass loaded pulley from Vinyl Nirvana. I see its only for Hurst motors. Mine is a Haydon. Am I out of luck? The...
  17. E

    Console Stereo Resto ?

    So I've got an old mid century Curtis Mathes console stereo that I scored on craigslist. I was originally going to just clean it up and use it as is but now I'm curious as to whether I could retrofit it with some vintage solid state gear I have laying around. I'd like to mount a Pioneer SA 9500...
    • eddietres
    • Thread
    • console stereo curtis mathes mod pioneer sa-9500 ii pioneer tx-9500 project debut carbon restoration project
    • Replies: 4
    • Forum: DIY
  18. Z

    Yamaha NS333 crossover mod

    Following very good experience with NS555 mod described in another thread by ecommers I decided to improve sound in my NS333. Yamaha used cheap parts in crossovers which apparently deteriorated with time. I just substitute one capacitor and one coil per speaker. Parts used (got mine from HiFi...
    • Zego
    • Thread
    • crossover mod yamaha ns333
    • Replies: 1
    • Forum: Speakers
  19. Johnny_Law

    Sony CDP-X33ES CD Player Mods?

    I'm posting this in D&S because I am asking about mods discussed in a CL ad, but figured people would comment on the asking price in the ad: https://losangeles.craigslist.org/sgv/ele/d/sony-cdp-x33es-hi-end-mod/6754922369.html If this can live in the Digital forum instead of D&S please let me...
  20. Andrew Heck

    Xiang Sheng DC-01a

    Howdy. I'm a circuit novice trying to dig into this piece of equipment and get the most out of it. There are no schematics available, so I've been relying on bits and pieces of advice floating around the internet. The three things that I've found to be important are tube rolling, upgrading...
    • Andrew Heck
    • Thread
    • dac-01a improvement mod output capacitor xiang sheng
    • Replies: 6
    • Forum: DIY
  21. DangerBoy

    Nice inexpensive experiment, great results

    At my cabin I have a Panasonic SA-PMX9 micro stereo system that is a few years old. These systems were fairly good and fairly well reviewed at the time they came out (https://www.whathifi.com/panasonic/sc-pmx9db/review). I was never all that satisfied with the speakers though. They were a bit...
    • DangerBoy
    • Thread
    • capacitor capacitor upgrade mod modification psb image 2b upgrade
    • Replies: 7
    • Forum: Speakers
  22. KNielsen

    Acurus A250 and starground

    Hey Ak I'm restoring my Acurus A250 and at the same time making some mods, this includes new starground curciut. I'm splitting input and feedbackground (now they share same ground at input), but what about D3/D6...??? I parallel a 4,7uf/470nf cap over these for lower noise, but should I also...
    • KNielsen
    • Thread
    • a250 acurus acurus mod diode feedback ground input mod rebuild starground
    • Replies: 908
    • Forum: DIY
  23. smurfer77

    Revisiting the Sansui AU-999 - repair, rebuild and mods

    I've not been quiet about saying my honest feelings about the AU-999 in the past. My earlier Sansui experiences were along the lines of AU-666, AU-555A, AU-505, AU-222. I was already in love but when I got my hands on an AU-777 and AU-777A I really fell deeply. I knew I had to have the TOTL from...
  24. David Bright

    Yaqin MS-23B mod question

    Is there anyone in the So Cal area that can mod the Yaqin MS-23B?
  25. Tim64

    Tweeter swap out on a Polk R40

    Finally got a laid back Saturday so decided to ditch the tweeters on my Polk R40's that just never sounded that great in the three years I have had them. I was thinking of using the CTS phenolic ring tweeter but remembered I had a pair of Samsung speakers in the garage. The Samsung cone tweeters...
    • Tim64
    • Thread
    • mod polk speaker tweeter
    • Replies: 5
    • Forum: Speakers
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