The Workbench

Re: RL60.2 recap

tournedos — Thu, 08 Jan 2009 07:31:37 GMT

Here we go. The other one is the same, including the serial number - I guess these were numbered in pairs?

Re: RL60.2 recap

tournedos — Wed, 07 Jan 2009 17:00:57 GMT

Definitely RL60.2's with an original bass reflex construction, no traces of ABR's - and the actual crossover doesn't match the RL60 in the service manual either.

Soon I'll be tempted to go back to the office to check them!

Re: RL60.2 recap

Puncher — Wed, 07 Jan 2009 16:48:55 GMT

My original RL60's also had this type of "non-pcb" construction. Is it possible that they are actually RL60's with RL60.2 straps? What does the rating plate on the rear of the speaker say?

Re: RL60.2 recap

tournedos — Wed, 07 Jan 2009 16:06:37 GMT

I'll get them tomorrow, at least one of them has the serial number sticker left. Do you suppose I have a pair from some very early production run, or something? I recall the type number matches (checked it before buying these), and the mylar straps read "RL60.2" as well.

Re: RL60.2 recap

Dillen — Wed, 07 Jan 2009 15:11:54 GMT

Do you have a type number and serial number on these speakers ?

All redline speakers I ever saw had "proper" PCB boards, even the RL35. And the RL60.2 filters I've seen were nothing like the ones you have.

Martin

Re: RL60.2 recap

tournedos — Wed, 07 Jan 2009 11:52:04 GMT

And here is the finished product, old ROE bipolar electrolytics replaced with Intertechnik MKT foil caps which should be plenty good for these speakers. I had planned to compare the upgraded and old speakers, but of course forgot to take notes on how the foam padding pieces belonged in the case - so I opened the second speaker for reference before assembling the first...

After some initial listening tests (have to bring more CDs to work tomorrow...) I'm quite happy. The crisper high end is notable at once. I have now high hopes for the Pentas at home, which I will be doing next...

Re: RL60.2 recap

tournedos — Wed, 07 Jan 2009 11:27:10 GMT

And just like with the Pentas, the actual crossovers are different from the service manual No problem otherwise, but since I had ordered the caps in advance, I was now short of two 6.8u caps and had a couple of extra 15 uF's... After some thinking, I decided to steal a pair of 2.2's from the Penta lot, and use 4.7+2.2 in parallel for the 6.8 in the real tweeter network.

Attached are the service manual version of the crossover, and what I actually found in the speakers.

RL60.2 recap

tournedos — Wed, 07 Jan 2009 11:20:00 GMT

I finally got my cap order today after two months - I guess it was the 27uF caps for the Pentas that took a while... I decided to start with the RL60.2's I have at the office (a cow-orker complained about lack of treble ). I took one off the ceiling pole and opened it up. I hate these chipboard constructions.