Thanks Rob,
I am glad you said that about the piezo.
I experimented a lot 30 or so years ago and just could not get a sound that I found was acceptable and easy on the ears, in any jukebox I tried.
They were seen as a cheap alternative to broken or missing horns but gave me a headache so I jacked them in and that opinion has always stayed with me.
Nigel
On 3 May 2023 at 02:22, Chan Gade via Jukebox-list jukebox-list@lists.netlojix.com wrote:
Nigel, I’ve never used piezo tweeters in the machines.
The one I used in the 1980s & 90s was a Radio Shack 40-1278B. These are long NLA.
I had been suggesting two later Pyle high efficiency 2” and gotten good responses from those who used them in the machines. These had even higher claimed efficiency vs. the R.S. (101db vs. 98).
Given most are 8 ohm an 8 ohm 10 watt non-inductive resistor in series is recommended for 16 ohm systems. Most of the 12” speaker back then (in 1950s American versions) had a free air resonance around 72-78 Hz. The 12’ in LPC were higher at around 94Hz. I have two of these in a 201 with audibly same results as the originals. They aren’t that critical since these are not tuned & damped enclosures. More important are tweeters and crossovers
Regards, Rob
On Tuesday, May 2, 2023, 10:33:28 AM GMT-5, Nigel Pugh pughn@npsyssoft.force9.co.uk wrote:
Hi Rob,CTC I think was the other speaker manufacturer that was in the Amis of that era. Ive tried all of those in my own personal Continental and Tropicana and all give a good sound and pretty much an identical sound. They seem readily available on eBay or you can get an Italian made Jensen one of the identical original spec. Rob, the replacement tweeter you mentioned, is it a direct piezo one or standard horn via the crossover? Or, to the original poster, see what it sounds like and take it from there. It might sound great first time. Nigel, uk
On 2 May 2023 at 15:23, Chan Gade via Jukebox-list jukebox-list@lists.netlojix.com wrote:
The resistors are probably OK. They are just to pad down the tweeter…can’t have too much highs, can we :-)
The original woofer was a typical 16 ohm full range made by either Jensen or Utah. It varied. There was another supplier, whose name I can’t remember.
Given the size of the enclosure and amp, I’d say that any of the 12” full range 16 ohm speakers used in jukeboxes back then will be suitable, Certainly, any from the H through O series.
The tweeter is another matter. Those were always (IME) Jensen and not all that efficient. I added a 2” high output horn to my H & I I was able to add it just above the existing horn due to the setback of the 12” in those machines. In Continental 1 I replaced the original which was nearly dead with the same 2” horn and just made a filler plate out of Plexiglas to mount it and cover the extra area the original horn left. If you are going to replace the obsolete G.E. cart a tweeter upgrade is a good addition.
RobNYC On Monday, May 1, 2023, 06:18:49 AM GMT-5, Doug Duncan via Jukebox-list jukebox-list@lists.netlojix.com wrote:
Dear People,
I hope someone can provide a little guidance for repairing or replacing the crossover for my Continental 1.
For reasons too complicated to list I bought the unit for renovation from a dealer in Coventry and started the renovation but it then had to stand for about 20years. I have only now continued the renovation.
I decided to look at the crossover and I find that there is a replacement bass driver and a horn tweeter that is not connected (to the crossover or anything else). Please note that it is not a piezo tweeter. Thecrossover is also not connected to anything and appears to be the original. It has a coil, value unknown, a very old electrolytic .cap - 3.0 mFd 50V one 27 ohm 10% resistor and one 22 ohm 10% resistor.
Can anyone please suggest how suitable this might be? I plan to replace the resistors and cap once it is know what should be there or alternatively what I should replace it with.
Best Regards,
Doug _______________________________________________ Jukebox-list mailing list -- jukebox-list@lists.netlojix.com To unsubscribe send an email to jukebox-list-leave@lists.netlojix.com %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s Searchable Archives: http://jukebox.markmail.org/
Jukebox-list mailing list -- jukebox-list@lists.netlojix.com To unsubscribe send an email to jukebox-list-leave@lists.netlojix.com %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s Searchable Archives: http://jukebox.markmail.org/
Jukebox-list mailing list -- jukebox-list@lists.netlojix.com To unsubscribe send an email to jukebox-list-leave@lists.netlojix.com %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s Searchable Archives: http://jukebox.markmail.org/