Pab Posted August 8, 2022 Share Posted August 8, 2022 Since my newly purchased 800 has a blown keyclick speaker, I was thinking about the odds of replacing it not with a big vintage unit but a modern PC case speaker. And since I would need to hack the little speaker’s cable to do it (to use a molex small instead of a DuPont connector) I was thinking about maybe adding a potentiometer between them to act as a volume control. Would this be feasible? Or am I better off just getting an old school speaker? Quote Link to comment Share on other sites More sharing options...
Mclaneinc Posted August 8, 2022 Share Posted August 8, 2022 I'd stick with old school and maybe add a volume log pot Quote Link to comment Share on other sites More sharing options...
Rybags Posted August 8, 2022 Share Posted August 8, 2022 You can get those little piezo ones that modern cases and motherboards use instead of the old 3 inch cones. They're about 12mm diameter and under 20mm tall. But whatever you do I suspect that though the keyclick will barely change, stuff like GTIA music and 1-bit digital effects as used by some games like Night Mission Pinball could sound somewhat different. 1 Quote Link to comment Share on other sites More sharing options...
Mclaneinc Posted August 8, 2022 Share Posted August 8, 2022 What impedance are the 800 speakers, 8 ohms? Quote Link to comment Share on other sites More sharing options...
Pab Posted August 8, 2022 Author Share Posted August 8, 2022 5 hours ago, Mclaneinc said: What impedance are the 800 speakers, 8 ohms? That’s pretty much the standard for that type. Quote Link to comment Share on other sites More sharing options...
Panther Posted August 8, 2022 Share Posted August 8, 2022 63 Ohms. Quote Link to comment Share on other sites More sharing options...
reifsnyderb Posted August 8, 2022 Share Posted August 8, 2022 7 hours ago, Mclaneinc said: What impedance are the 800 speakers, 8 ohms? 8 Ohms doesn't work for a 400. (I guessed, tried, and found out the hard way.) I doubt it would work for an 800. 31 minutes ago, Panther said: 63 Ohms. 64 ohms is what measured on another speaker. Quote Link to comment Share on other sites More sharing options...
Panther Posted August 8, 2022 Share Posted August 8, 2022 2 hours ago, reifsnyderb said: 64 ohms is what measured on another speaker. That's quite close. 63 ohms is what's printed on the NOS speaker I have here. 56 Ω is what I measured. Quote Link to comment Share on other sites More sharing options...
ClausB Posted August 9, 2022 Share Posted August 9, 2022 In the day I did wire a pot in series with my 800's speaker so that I wouldn't disturb my housemates during late night coding. But then the 810's noise made me cringe! 1 1 Quote Link to comment Share on other sites More sharing options...
Panther Posted August 9, 2022 Share Posted August 9, 2022 I'm not so sure the 2N3904 transistor at Q101 would be happy with an 8 Ω speaker. 1 Quote Link to comment Share on other sites More sharing options...
Fox-1 / mnx Posted August 11, 2022 Share Posted August 11, 2022 The speakers used in many consumer headphones usually have a 32 Ohm impedance. Should be close enough. Quote Link to comment Share on other sites More sharing options...
Mathy Posted August 11, 2022 Share Posted August 11, 2022 Hello guys What if you'd use two of those 32 Ω speakers in series? Sincerely Mathy Quote Link to comment Share on other sites More sharing options...
Muzz73 Posted August 24, 2022 Share Posted August 24, 2022 If you DID want to replace it with a stock speaker, B&C has 8 left (NOS) as of right now: https://www.ebay.com/itm/133063072388?hash=item1efb2d5a84:g:cVoAAOSwpThc1Rpr Quote Link to comment Share on other sites More sharing options...
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