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Rare! VINTAGE CHANNEL MASTER 6830 CB RADIO W/ MICROPHONE MIC Make an Offer!

RARE VINTAGE GRANADA CB RADIO W/ ORIGINAL MICROPHONE MIC Make an Offer!

Vintage Electro Voice D054 Professional Dynamic Microphone omni vocal broadcast

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vintage Recordio recording microphone for reel to reel recorders

Switchcraft 332A 5/8-1/4 Microphone Adapter for Vintage Harmonica Harp Mic JT-30

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VINTAGE PANASONIC SOLID STATE RECORDER RQ-156S W/ PANASONIC MICROPHONE

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LUSTRAPHONE/GRUNDIG VR53 VINTAGE BRITISH RIBBON MICROPHONE WITH YOKE

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**VINTAGE** MURA 49 MHZ WIRELESS MICROPHONE SYSTEM MODEL # WMS-49

Electro-Voice 666 Vintage Microphone #2

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VINTAGE NATIONAL MD-1669 MICROPHONE MIC VOCAL w/CORD FREE SHIPPING!

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2 VINTAGE VOICE OF MUSIC TABLE TOP MICROPHONE STAND

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VINTAGE TELEFUNKEN BAKELITE MICROPHONE # ELA M 102 # 1930s - EXCELLENT CONDITION

General Electric / Shure Model EM28B Vintage Telescoping Desktop Ham Microphone

AKG D12E 200 OHMS Vintage Bass Kick Drum Dynamic Mic Microphone - Austria Made

RARE VINTAGE RADIO STUDIO SPEAKER MIC MICROPHONE BOX CHANNEL SELECTOR CHANGER

Vintage Microphone Gc Electronics Cat No 18-000

Vintage 1960's Electro Voice 418 microphone stand old antique midcentury # 4

Vintage Electro Voice Cardax 950 microphone crystal 1950's old antique Elvis

Vintage AKG D58 E 200 Hypercardioid Noise Cancelling Microphone XLR Gooseneck

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Date: Wed, 12 Feb 2003 03:12:10 EST
From: Markburne~ol.com
Subject: Re: amp vibrato (was: Little Walter was Re: throat vibrato)

The Vibroverb,Tremoluxes & Princetons of that era (6G?) used the bias
modulation to achieve vibrato/tremolo/wobble but this method only requires 1
preamp tube. The 6G12 & 6G12A Concerts (as well as the
Pro/Bandmaster/Twin/Super of the same age) use 2-3 12AX7 tubes to split the
signal into highs and lows and and get them beating against each other.

The blackface AB763 Concert used the light dependent resistor found in most
other BF & SF amps.

Regards, Mark.