Home  Resources  References  Tubes  Forums  Links  Support 
Masco Audiosphere 27 (PA
9/26/2008 7:56:17 PMBob Z
9/26/2008 8:02:02 PMBob Z ---The rest of the story
Hit enter by mistake, I just received a Masco 27 watt pa amplifier from the early 60's. Model Audiosphere 27. It was used in a skating rink that closed in the late 60's. The unit has been hacked up a bit, tubes and transformers are present but some of the resistor's/capacitors are missing. You can see where they were cut out from.
It looks like a straight forward push pull set up, but having the schmatic would be nice. Tube complement is (2) 6L6, 5v4 (5u4 now in unit), (2) 12ax7 and a 6ba6.
If anyone has a diagram or knows where i can download from I would appreciate it.

Thanks to all.
Bob

9/27/2008 7:55:01 PMBill VA
Bob Z, Schematic sent.
Bill

:Hit enter by mistake, I just received a Masco 27 watt pa amplifier from the early 60's. Model Audiosphere 27. It was used in a skating rink that closed in the late 60's. The unit has been hacked up a bit, tubes and transformers are present but some of the resistor's/capacitors are missing. You can see where they were cut out from.
: It looks like a straight forward push pull set up, but having the schmatic would be nice. Tube complement is (2) 6L6, 5v4 (5u4 now in unit), (2) 12ax7 and a 6ba6.
: If anyone has a diagram or knows where i can download from I would appreciate it.
:
:Thanks to all.
:Bob

9/27/2008 9:13:42 PMBob Z - Thanks Bill ........
To Bill,
Got it, Thanks, I appreciate it.
Bob

:Bob Z, Schematic sent.
:Bill
:
:
:
::Hit enter by mistake, I just received a Masco 27 watt pa amplifier from the early 60's. Model Audiosphere 27. It was used in a skating rink that closed in the late 60's. The unit has been hacked up a bit, tubes and transformers are present but some of the resistor's/capacitors are missing. You can see where they were cut out from.
:: It looks like a straight forward push pull set up, but having the schmatic would be nice. Tube complement is (2) 6L6, 5v4 (5u4 now in unit), (2) 12ax7 and a 6ba6.
:: If anyone has a diagram or knows where i can download from I would appreciate it.
::
::Thanks to all.
::Bob

6/30/2009 2:38:01 AMDaniel Pearson
Hi, I have an Audiosphere 27 with a large green dogbone burned up resistor, with the identifying marks scorched off of course. I'd dearly love to have a copy of the schmematic to see if I can identify the resistor. Could you possibly send a copy to my email? the7swede@sbcglobal.net thanks....

:Bob Z, Schematic sent.
:Bill
:
:
:
::Hit enter by mistake, I just received a Masco 27 watt pa amplifier from the early 60's. Model Audiosphere 27. It was used in a skating rink that closed in the late 60's. The unit has been hacked up a bit, tubes and transformers are present but some of the resistor's/capacitors are missing. You can see where they were cut out from.
:: It looks like a straight forward push pull set up, but having the schmatic would be nice. Tube complement is (2) 6L6, 5v4 (5u4 now in unit), (2) 12ax7 and a 6ba6.
:: If anyone has a diagram or knows where i can download from I would appreciate it.
::
::Thanks to all.
::Bob

6/30/2009 8:17:26 AMBill VA
:Hi, I have an Audiosphere 27 with a large green dogbone burned up resistor, with the identifying marks scorched off of course. I'd dearly love to have a copy of the schmematic to see if I can identify the resistor. Could you possibly send a copy to my email? the7swede@sbcglobal.net thanks....
:
::Bob Z, Schematic sent.
::Bill
::
::
::
:::Hit enter by mistake, I just received a Masco 27 watt pa amplifier from the early 60's. Model Audiosphere 27. It was used in a skating rink that closed in the late 60's. The unit has been hacked up a bit, tubes and transformers are present but some of the resistor's/capacitors are missing. You can see where they were cut out from.
::: It looks like a straight forward push pull set up, but having the schmatic would be nice. Tube complement is (2) 6L6, 5v4 (5u4 now in unit), (2) 12ax7 and a 6ba6.
::: If anyone has a diagram or knows where i can download from I would appreciate it.
:::
:::Thanks to all.
:::Bob

Daniel, schematic sent.
Bill

6/30/2009 12:45:13 PMBob Z
Schmatic Sent to your e-mail.
Bob

:Hi, I have an Audiosphere 27 with a large green dogbone burned up resistor, with the identifying marks scorched off of course. I'd dearly love to have a copy of the schmematic to see if I can identify the resistor. Could you possibly send a copy to my email? the7swede@sbcglobal.net thanks....
:
::Bob Z, Schematic sent.
::Bill
::
::
::
:::Hit enter by mistake, I just received a Masco 27 watt pa amplifier from the early 60's. Model Audiosphere 27. It was used in a skating rink that closed in the late 60's. The unit has been hacked up a bit, tubes and transformers are present but some of the resistor's/capacitors are missing. You can see where they were cut out from.
::: It looks like a straight forward push pull set up, but having the schmatic would be nice. Tube complement is (2) 6L6, 5v4 (5u4 now in unit), (2) 12ax7 and a 6ba6.
::: If anyone has a diagram or knows where i can download from I would appreciate it.
:::
:::Thanks to all.
:::Bob

6/25/2009 3:09:30 PMDaniel Pearson
Hi, I have one of these and been searching for a manual/parts list. Do you think you could send a copy to my email? thanks, Daniel


© 1989-2025, Nostalgia Air