upgrade

I'm working on solving a "wow" and "flutter" issue that occasionaly shows up. I've replace the .047m filter capacitor, and have a new belt on order. Does anybody know if there is another capacitor hiding within the turntable, before I bother with further disassembly ?

Like I need it to be less than 4.5cm high to fit under my PC monitor on my desk (I have stacked monitors on mounts so I dont want to prop them up higher). I want to spend around 1000$ but not more, Ive heard thats the upper limit of where the returns get increasingly smaller the more expensive...

Part 1: Random "Popping" Noise This 771 exhibited random "popping" noise in both channels; measurement of the DC offset at the speaker outputs, demonstrated that the reading would fluctuate widely, reaching at times, several hundred mVs. This behavior was independent of input source and was...

I am rebuilding a Dynaco Stereo 120, with UpdateMyDynaco power supply and replacement caps, and the eBay TIP-mod amplifier boards, and I am seeing two issues that I could use some help with. 1) High DC offset (~200mV), and 2) the #4 and #14 eyelets are reading 71.3V instead of 36 and 37V...

Hello AK world! Picked up a JVC AL-A151 turntable for 40 bucks. Works perfectly. It has an Audio Technica 1001 on it, but looking to upgrade it. Would like to stay under $100. Appreciate any suggestions! Thanks!

hi i have a nikko alpha III it is 8-16 ohm Rated buuuut i just figured out later in the nikko production they did something to make them 4 ohm compatible i know this because a guy is selling one and had some but not much useful info if anybody knows anything please announce it i´d be have happy...

I am in the process of upgrading all of the incandescent lamps to LED. The Dial lights and Signal and Tuner lights turned out beautiful. I then upgraded the left and right Power Meter lamps to LED and now have NO lights on anywhere. I must say that changing the lamps in the Power Meters were a...

Hello! Hoping to get some input from folks who have had experience with these two speakers: Paradigm Eclipse Monitor (from late 80's) and the Reference Studio 100v1. I currently own a 7SEmk3 and am hoping to upgrade. I listen to a lot of classical, jazz and instrumental (cello, guitar and...

Hi everybody. I picked up a beautiful VTA ST-70 that was assembled by a lady named Sue in 2013 (signed in the chassis). It is set up to accommodate 8ohm speakers only. I want to hook it up to a pair of Klipsch Fortes which are 4ohm. Anybody know what I'd have to do to upgrade this on the amp...

I have a 1959/1960 Silvertone Model 2075 Console Stereo that has been working well aside from the turntable drive motor, scratchy volume pot, dial & indicator lights that are burned out, and poor bass response. I'm competent in electrical repair (following directions and the advice of others)...

I have a pair of Ohm L's that are in perfect shape but they are stock. I have been toying around with the idea of upgrading the woofer and getting the SBA attachment. Has anyone done this before? Is it worth it to replace the original woofer and also get the SBA or is it better to just leave...

Upgrade video of Ascend Acoustics Sierra Towers, V1 to ELX (easy and effective) Hi folks, Just upgraded my towers. They sound amazing. Upgrade was straightforward. 6 new drivers 1 new crossover total time about 2.5 hours Here is a video of the process of the upgrade of V1 Sierra Towers with RAAL...

Hello! I recaped a 790 sansui, don't working before recap. Now relay clicks, DBT show no shortcut, unit sounds Bad and once the volumen reaches 35-40%, distorsion is really Bad and finally relays click and sound go out. Dc offset is ok, about 3+5 mv, but bias is 45V!!!! On test point 5-6 & 5-7...

Some years ago I bought a Wilson Benesch Full Circle turntable but at the time could not afford the ACT 0.5 tone arm so fitted a Rega RB300 with a Shure V15VxMR (of which I now have 2 following an acccident which broke the stylus on one and the I had the whole unit replaced). The stylus was...

I have decided to do an upgrade and I would like the groups’s suggestion for the best under $2000 speskers. My amp is a Pioneer SX1050 and my current speakers are the KEF Q350. I am looking for better imaging, better staging and maybe better performance of higher frequencies while conserving the...

Just finished this nice Proton AM-452 recap/upgrade, following a detailed 2016 article on AudioReview italian magazine. You can find a quite accurate English G-translation here. .......... On top of the magazine suggestions I have replaced: all the electrolytic capacitors in the PS + bypass...

A little while ago (Fall, 2020), AK member @Phineas69 brought in a very nice AU-719 for a complete restoration and upgrade. PART 1: HEAD AMP CIRCUIT BOARD (F-3095) The F-3095 board contains the Head (Phono) Amplifier for moving magnet cartridges. Signal Path Components: In each channel...

Hi y'all This is my first time posting to AudioKarma so please let me know if I'm doing anything wrong. I'm thinking of upgrading my turntable set-up and don't really know where to start. Here's my current set-up: Turntable: Technics SL-1200 mk3 Cartridge: Nagaoka MP-110 Phono Pre-Amp: U-Turn...

hello AK'ers I´m working on a 2330b. previously repaired without succes. power supply recapped, new transistors, new relay, single diodes an double diodes as well preamp, phono recapped power amp recaped BUT after changed capacitors, transitors, new mj´s 95/96 output.... one chanlles refuses...

I often get asked why should one consider judicious increases to the capacity of a power supply. I typically respond as such: It can be argued that the power supply is in the signal path, it's essentially in series with the output stage and hence does impact the sound of an amplifier. Nelson...

Good morning, After searching the forums, I did not see a recap / upgrade BOM or other list posted. Yes, I can refer to the SM and get out the calipers and spec them myself, but my problem is time. There are the kits on that auction place, but goodness, they are seriously marked up! If a...

Hello AK'ers. I'm working on a beautiful 4430 unit. Promblems: When playing in MONO, left and right speakers sound (and sound amazing IMO) BUT when playing STEREO no sound... Well a Lot of noise and a very very low music volumen. I think someone tried to repair it before, but left a mess with...

Hey guys, just wanted to get some opinions here, any input would be greatly appreciated. My current set up is a pioneer sx-535 receiver, pioneer cs-500g speakers, and technics sl-3200. Where should I go from here for the biggest jump to upgrade sound? I feel like the synergy in my set up is...

This is the start of my latest Thorens TD-160 Project. Hope we can generate some good learning points and discussions for keeping these engineering marvels in top performing shape. Most of my updates will be via video links posted to my YT Channel and linked herein from time to time. Tips and...

I have a pair of original SDA-1's and was wondering what improvements can be expected from doing the SDA-1A mod to them. (I have the instructions from the old Club Polk) I have already upgraded to the RDO-194 tweeters. Is the SDA-1A upgrade really an improvement?