Search found 222 matches

by stbasil
Fri Apr 17, 2026 5:20 pm
Forum: Other Consoles
Topic: General Electric RC-4851 coffee table stereo
Replies: 12
Views: 97

Re: General Electric RC-4851 coffee table stereo

FYI, the schematic I uploaded (from radiomuseum), and the one in the 1964 Beitman's book are only for the amp, which worked for me since my model doesn't have the tuner. And the component designations in the radiomuseum schematic don't agree with the PCB markings in my model, though it's accurate ot...
by stbasil
Sun Mar 29, 2026 9:31 pm
Forum: Our Other Toys
Topic: Hydra-Matic
Replies: 9
Views: 236

Re: Hydra-Matic

Great story, thanks for sharing!
by stbasil
Wed Mar 25, 2026 5:06 pm
Forum: Record Players
Topic: $5 Riviera Deluxe
Replies: 44
Views: 16807

Re: $5 Riviera Deluxe

The unit is missing it's Magnavox emblem, I think it may have looked like this (screenshot photo from a different model). 1000002699_edited.jpeg The holes in my unit look like this, the two holes on the left are 1" apart, the third one is 1 1/8" from the middle one. PXL_20260323_234640035~...
by stbasil
Wed Mar 25, 2026 4:23 pm
Forum: Record Players
Topic: $5 Riviera Deluxe
Replies: 44
Views: 16807

Re: $5 Riviera Deluxe

Replaced the cartridge in the changer with the Pfanstiehl P-226D in Gary's kit, managed to get all the tiny fiddley pins soldered, had to widen the slots in the provided plastic mount, plus the little screws were longer than in the pictures of the instructions provided, but after all that it sounds ...
by stbasil
Sat Mar 21, 2026 4:11 pm
Forum: Our Other Toys
Topic: Mack Maxidyne
Replies: 4
Views: 134

Re: Mack Maxidyne

Loved the video and the stories--the tale of a true underdog! Yet another example of good ole Yankee ingenuity lost on most of us, if it weren't for such videos and recollections. Thanks for sharing!
by stbasil
Thu Mar 19, 2026 3:06 am
Forum: Record Players
Topic: $5 Riviera Deluxe
Replies: 44
Views: 16807

Re: $5 Riviera Deluxe

The choice of transistor was the result of Google AI providing some silicon types that were commonly used for germanium replacements, plus some other videos and articles that I found. I ordered an assortment from Amazon that had the 2N3906 along with 9 other types, (250 transistors for only $7!!!). ...
by stbasil
Wed Mar 18, 2026 8:56 pm
Forum: Record Players
Topic: $5 Riviera Deluxe
Replies: 44
Views: 16807

Re: $5 Riviera Deluxe

Well, at this point, I still prefer tubes! I earned my EE degrees at the turn of the 60s to 70s: tubes were passe, semiconductors were the focus, but 1s and 0s and ICs were my specialty. Google has been immensely helpful in reviving my elderly memory when it comes to transistors. When I picked up th...
by stbasil
Wed Mar 18, 2026 7:20 pm
Forum: Record Players
Topic: $5 Riviera Deluxe
Replies: 44
Views: 16807

Re: $5 Riviera Deluxe, A505 amp board

After doing some Googling research, and posting some questions on ARF, and experimenting, I've made a few circuit changes. I added .001uF mylars to the base of each driver which killed the oscillation without affecting the frequency response. Ended up replacing both driver transistors, one was noisy...
by stbasil
Sun Mar 15, 2026 3:00 am
Forum: Record Players
Topic: $5 Riviera Deluxe
Replies: 44
Views: 16807

Re: $5 Riviera Deluxe

I've replaced the feedback caps, but didn't try different values. However, I have since confirmed that cooling one of the second transistors, X2/X6, will stop the oscillation. Cooling the one in the other channel also has an effect, though less so. Leakage is over 2ma when the transistor is tested o...
by stbasil
Mon Mar 09, 2026 5:42 pm
Forum: Record Players
Topic: $5 Riviera Deluxe
Replies: 44
Views: 16807

Re: $5 Riviera Deluxe

ARG!!! So I got t the new cart from Gary, started to remove the old cart and discovered that its ground wire had loosened, reattached it, and the old cart sounded OK! But then I noticed some very low frequency rumbling, so I thought I was getting feedback through my plastic workbench top from the do...
by stbasil
Mon Mar 09, 2026 4:30 pm
Forum: Other Consoles
Topic: GE Wellington coffee table, model RC 4842-A
Replies: 77
Views: 53342

Re: GE Wellington coffee table, model RC 4842-A

Installed and working! It looks great, but I'm not entirely satisfied with the sound, seems a little "boomy" so I might look into that later with a signal generator to see what's going on, maybe fiddle with the crossover caps. The box next to the changer is the selector for phono or Blueto...
by stbasil
Sun Mar 08, 2026 8:04 pm
Forum: Other Consoles
Topic: GE Wellington coffee table, model RC 4842-A
Replies: 77
Views: 53342

Re: GE Wellington coffee table, model RC 4842-A

My novice advice re veneering project I watched lots of videos on YouTube, one was especially helpful for a beginner like me, with zero veneer experience: https://youtu.be/Tpus_MULatI?si=s6cnkr2nL7Sr6Bc1 I bought the 2' x 8' veneer from home Depot, it comes rolled up in a cardboard box. Mahogany was...
by stbasil
Sat Mar 07, 2026 2:43 pm
Forum: Other Consoles
Topic: GE Wellington coffee table, model RC 4842-A
Replies: 77
Views: 53342

Re: GE Wellington coffee table, model RC 4842-A

Thank you, guys, for your kind words. I learned a lot about veneering since every visible piece of wood is veneered!

It sounds pretty good, not like my Moto SK-111 of course. I've also added Bluetooth via a selector switch, I'll post some additional pics on that soon.
by stbasil
Fri Mar 06, 2026 9:51 pm
Forum: Other Consoles
Topic: GE Wellington coffee table, model RC 4842-A
Replies: 77
Views: 53342

Finished, ready to move into the living room!

Finally. The wife loves it, so we'll replace our existing coffee table with this one! Here's several shots of the completed project, no more early American look. I took these pics in the garage (wife's car in the shop), but the lighting is poor. Interesting how the grain direction and lighting influ...
by stbasil
Sat Feb 28, 2026 6:12 pm
Forum: Record Players
Topic: $5 Riviera Deluxe
Replies: 44
Views: 16807

Re: $5 Riviera Deluxe

Well after working on cleaning up and lubing, the tracking seems to be much better, but it's hard to tell because the cartridge is shot, sounds terrible. So I've ordered the kit Gary recommended. Wasted money on the new stylus that I bought a while back!
by stbasil
Sat Feb 28, 2026 5:50 pm
Forum: Changers
Topic: Micromatic W603 (1964-5) questions
Replies: 8
Views: 4306

Re: Micromatic W603 (1964-5) questions

Thanks for the advice on the label, I'll try removing and glueing. Here's something that might be helpful to some of you; in cleaning the top surface of the changer, I've been using isopropyl alcohol and car wax. But it takes a lot of scrubbing to remove some of the spots. I've had this gun cleaning...
by stbasil
Fri Feb 27, 2026 10:12 pm
Forum: Changers
Topic: Micromatic W603 (1964-5) questions
Replies: 8
Views: 4306

Re: Micromatic W603 (1964-5) questions

Since I've gotten the amp and speakers working on this portable, I'm cleaning up the changer some more, hopefully that will fix the tracking problem with the original caramic cart (as I mentioned in https://www.classichificare.com/viewtopic.php?t=3692&start=20) The stick-on label is curled up at...
by stbasil
Thu Feb 26, 2026 6:19 pm
Forum: Record Players
Topic: $5 Riviera Deluxe
Replies: 44
Views: 16807

Re: $5 Riviera Deluxe

Well, unfortunately, the changer works great as far as cycling and record size detection and tone arm set down, but when playing a 33 record, the tracking is very poor as if the horizontal movement of the tone arm is slightly impeded so that it cannot track correctly, even with the correct stylus pr...
by stbasil
Wed Feb 25, 2026 5:52 pm
Forum: Record Players
Topic: $5 Riviera Deluxe
Replies: 44
Views: 16807

Re: $5 Riviera Deluxe

Removed the old grill cloth from the speaker baffles and temporarily attached the "new" speakers (which all have the same impedances as the original speakers). Even though the tweeters were 5 in, they fit the two 4-in mounting studs. The woofers are deeper than the originals, that makes th...
by stbasil
Wed Feb 25, 2026 5:18 pm
Forum: Other Consoles
Topic: GE Wellington coffee table, model RC 4842-A
Replies: 77
Views: 53342

Re: GE Wellington coffee table, model RC 4842-A

I had also used the aqua coat on the front of the newly veneered rotating changer enclosure, but only one coat, and it looks great so it didn't require sanding down. The manufacturer should warn the user about this issue....