replacement lamps for tremolo

[Rob A]

Anyone have the part number handy? I have the concentric knob preamp, and I can't determine from the drawing on the site what the part number is. I'm making an electronics order and I want to get some to have on hand.

Edit: I know the ORP61 number is on the drawing, but is there a modern meaningful cross reference?

Edit2: sorry, ORP61 is the LDR, I still need the bulb reference please.

[Rob A]

Found it, apparently GE miniature lamp #19 is a valid reference.

Here's one source:
http://www.lightbulbsdirect.com/page/001/CTGY/Miniature

[John Brevik]

Found it, apparently GE miniature lamp #19 is a valid reference.

Here's one source:
http://www.lightbulbsdirect.com/page/001/CTGY/Miniature

Yeah, and those are not particularly rare -- if you have a "real" electronics supply local, e.g. one that ends in "vac," they'll stock it.

[nak5ive]

so what about the replacement / cross reference for the ORP61 LDR?

it seems to be quite difficult to find a suitable LDR. I removed one from my 80 watt stage preamp and measured a dark resistance of upwards of 20 Mohms and a white light resistance of about 3 Kohms. i haven't been able to find anything close to a replacement with those specs.

on the side of the LDR it reads "ORP61 HOLLAND", google turned up nothing useful for me.

any suggestions?

[Mark II]

first google research:

http://www.electroniclocator.com/Partdetail.asp?partnum=CL905%20HL(=ORP%2061%20)

CL905 (=ORP 61)

But I think that the usuall cuplrits concerning part delivery stocked the ORP61.
Check if that's true and what the prices make, you would be on the safe side.


edit:
http://www.hinkel-elektronik.de/shop/1153.html
a german supplier, orp61 still avaiable, but pricy, 12 $

Mark II