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Ok. I’m guessing you are blowing fuses because you’re underpowered. If you overdrive an amplifier, it tends to send dc current which will pop fuses and melt voice coils/traces. I would say you should have a 150 minimum into 4 ohms. It sounds like Nad may be a better choice. Let us know how you...

That’s great! Get ready for an infinite amount of tweaking. You really should not be blowing, even at high volumes. Can you tell what amplifier/ specs (powerand input impedance) is being used for the panels? Which fuses are blowing?

Looks good!

I used “feed and wax” on the panels.

Wow. Just going through this thread. Beautiful and set of rs1b’s. For the bass units it looks like you have a few options. Find the original controller which maybe used an accelerometer- maybe they used an IRS controller? Use a mini dsp like Pauljh suggested. Or use try an original rs1b servo...

Great write-up Paul. Thanks for sharing the info and setup. I’ve managed to get good sound out of my controller with much effort. I’m on my third unit which has hum balance. I have replaced the electrolytics and socketed opamps. The dsp is definitely on my roadmap though. Thanks again for the...

Oh yeah. I’ve seen the pictures you posted , Paul. Seems to be a well suited to the 1bs.

I agree the rs1b’s need space and take space. My listening room is about 18 x 16 with 8 ft ceilings. I’m not sure if that’s enough breathing room. What size is your brother’s room with his rs1b’s?

i currently have rs1b’s which has been a great adventure so far. They sound and look fantastic, however they do eat a bit of real estate in my living room. I’m wondering if any members hear could comment on the rsIIBs in comparison. It would seem to me they realistically have 95% of the...

Excellent! Enjoy!

My recently completed theater room setup.

Very nice. I have the mmg on sound anchors as well. How are the bass units?

Yes.

Hello. I’m not sure why you would get hf through the new op amp. They should be performing similar functions in terms of bandwidth. My guess is that the original is bad and you are hearing the symptom of another problem when you use the new 353. I replaced all the op amps (5) with the 353. From...

Well replaced a few more caps. The system really sound fantastic now. With all the issues with the crossover, I had my doubts that I could get the integration from the towers to the panels to sound right; not mention getting enough really deep bass. I wasn’t sure if this 35 year old technology...

Replaced all the fet transistors and is sounding pretty good now. I used the original k117’s which I could only find on eBay from China. I may do another round of component replacements, but am enjoying the rs1b’s in the meantime.

I would bi amp. Easier load on the amplifiers too. Ultimately test each and decide for yourself.

Picture before I replaced anything....

Ps- the op amps are push in. Note the orientation mark (circular dot or indent in one corner of the chip) if you replace.

My controller board is marked part no 42883a. The original opamps are list TExas instruments TL072ACP. I replaced with mouser part number 512-LF353n whiched seemed to work ok. I found that parts express has the exact original part which I haven’t tried yet. At this point I’m waiting for some...

Sad to hear. What a legacy though.