Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

38-690 Tweeter Temperature
#6

I already have corrected the tweeter phasing and will probably leave alone. I did temporarily shunt the tweeter with 1.2 K and 2.4 K resistors; it did affect the gain (which is what I expected), but I didn’t want screen voltage to exceed plates, which would have to be checked on each pentode.


Messages In This Thread
38-690 Tweeter Temperature - by RGK20m3 - 04-21-2022, 08:14 AM
RE: 38-690 Tweeter Temperature - by Brad Winder - 04-21-2022, 09:39 AM
RE: 38-690 Tweeter Temperature - by Ron Ramirez - 04-21-2022, 09:41 AM
RE: 38-690 Tweeter Temperature - by RGK20m3 - 04-21-2022, 09:47 AM
RE: 38-690 Tweeter Temperature - by morzh - 04-21-2022, 02:25 PM
RE: 38-690 Tweeter Temperature - by RGK20m3 - 04-21-2022, 03:35 PM
RE: 38-690 Tweeter Temperature - by Brad Winder - 04-22-2022, 12:11 AM
RE: 38-690 Tweeter Temperature - by RGK20m3 - 04-22-2022, 04:48 PM
RE: 38-690 Tweeter Temperature - by RickC - 11-23-2023, 03:46 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Heathkit Sweep Generator TS-4
Ron Instead of Quick reply, go to New Reply, then go to the title of the very first post, and change the title text the...morzh — 02:00 PM
6TPZ and 5TPO Radio Help
I am not a specialist in car radios. I suspect they might use vibrators to convert 12V to acceptable tube voltages, so ...morzh — 01:58 PM
6TPZ and 5TPO Radio Help
Welcome to the Phorum, R3Sons! I have very limited experience with car radios other than installing custom radios back ...GarySP — 01:08 PM
462ron
OK, I need to rename this thread to say..Eico 368 TV/FM Sweep Generator instead of the current title..Heathkit Sweep Gen...462ron — 12:49 PM
6TPZ and 5TPO Radio Help
Hello, I have a Philco (Ford) 6TPZ and a 5TPO radio.  I replaced the electrolytic capacitors in both.  I have the SAMS m...R3Sons — 12:29 PM
The list of my radio & TV collection!
Hello Peter, Thank you for posting that !! Sincerely Richardradiorich — 09:40 AM
Eico 232 VTVM Schematic
It's a microwave antenna. ?;-p?. I substituted 1N4002s off the 6.3 vac winding for the 1.5 volt battery. Uniprobe is the...RodB — 05:50 PM
Eico 232 VTVM Schematic
Try BAMA for a schematic. Looks like a replacement power source for the D battery has been installed. The tube may be...Chas — 04:51 PM
Eico 232 VTVM Schematic
Is that a battery holder?morzh — 04:43 PM
Eico 232 VTVM Schematic
A friend gave me this Eico 232 VTVM and I'm having trouble locating the schematic for it. This one seems to be a later v...RodB — 04:17 PM

[-]
Who's Online
There are currently 6674 online users. [Complete List]
» 3 Member(s) | 6671 Guest(s)
AvatarAvatarAvatar

>