63 Motorola 3-channel console stereo

[jeffs01879]

A quick hijack back to the 1962 portable. I have an SP30, which is the three channel portable (I use the word "portable" loosely, it weighs over 50 pounds) with built in "Vibrosonic" spring reverb. It has seven tubes, one 6BM8 each for the left and right channels, two 6BM8s for the center channel, two 12AX7s, one for the input amplifier and one for the reverb amplifier, and the 6CA4 rectifier.

Jeff

[Electronic M]

Originally Posted by jeffs01879

A quick hijack back to the 1962 portable. I have an SP30, which is the three channel portable (I use the word "portable" loosely, it weighs over 50 pounds) with built in "Vibrosonic" spring reverb. It has seven tubes, one 6BM8 each for the left and right channels, two 6BM8s for the center channel, two 12AX7s, one for the input amplifier and one for the reverb amplifier, and the 6CA4 rectifier.

Jeff

That thing is a beast! Probably bests my Admiral 2-suitcase (1 is the speakers) stereo player. It only has single 2 ended 6BQ6 amps with IIRC 2 12AX7 driving.

[jr_tech]

Originally Posted by jeffs01879

A quick hijack back to the 1962 portable. I have an SP30, which is the three channel portable (I use the word "portable" loosely, it weighs over 50 pounds) with built in "Vibrosonic" spring reverb. It has seven tubes, one 6BM8 each for the left and right channels, two 6BM8s for the center channel, two 12AX7s, one for the input amplifier and one for the reverb amplifier, and the 6CA4 rectifier.

Jeff

Thanks for the info... the earlier claim of 6 6BM8s had me scratching my head.

jr

[DavGoodlin]

Originally Posted by jr_tech

Thanks for the info... the earlier claim of 6 6BM8s had me scratching my head.

jr

Good thing those are not the similar (beam pentode-triode) but uber-rare 6GW8's

Adam, If you're in driving distance of V-M near Detroit, just go exchange that wheel for a rebuilt. I think most changer issues will go away.