UK Vintage Radio Repair and Restoration Discussion Forum

UK Vintage Radio Repair and Restoration Discussion Forum (https://www.vintage-radio.net/forum/index.php)
-   Vintage Tape (Audio), Cassette, Wire and Magnetic Disc Recorders and Players (https://www.vintage-radio.net/forum/forumdisplay.php?f=35)
-   -   Vortexion reel to reel Series W.V.B. 5+6 (https://www.vintage-radio.net/forum/showthread.php?t=712)

bryans900 31st Oct 2004 10:27 am

Vortexion reel to reel Series W.V.B. 5+6
 
Hi I own a beautiful Vortexion (as above!) The machine didn't come with a mike! I've tried an external recording source-perfect! But using a (600) mike -with a microphone transformer, BUT wont record. I'm trying to locate a low (30ohm) impedance mike!- no luck!
What mike would have been used originally? (type)?
Also I'm following instructions to the letter (setting bias etc) Any help gratefully received...Bryan

AC/HL 31st Oct 2004 3:06 pm

Re: Vortexion reel to reel Series W.V.B. 5+6
 
Bryan,
I'm not familiar with this machine but until someone who is comes along my best suggestion is a fault in the mic pre-amplifier, socket or cables. I would have thought you should get something, perhaps low or distorted, from any working microphone.

bryans900 31st Oct 2004 3:14 pm

Re: Vortexion reel to reel Series W.V.B. 5+6
 
Thankyou H/L there is a playback distotted noise, but NOT a proper recording; the meter will go from 0 to maximum indicating an overload of some sort, even if the mike is nowhere near the tape recorder, strange it does a perfect line recording from a record player.

paulsherwin 31st Oct 2004 3:17 pm

Re: Vortexion reel to reel Series W.V.B. 5+6
 
I also don't know this machine, but most consumer valve era tape recorders used a high impedence crystal microphone - a low impedence mike won't work well. This doesn't apply to pro kit of course.

You should be able to feed a (suitably attenuated) line signal into the mike socket.

HTH, Paul

AC/HL 31st Oct 2004 3:18 pm

Re: Vortexion reel to reel Series W.V.B. 5+6
 
Sounds like it's being overloaded and you could be right about the low impedance mic. Is it any better without the transformer ?

bryans900 31st Oct 2004 3:29 pm

Re: Vortexion reel to reel Series W.V.B. 5+6
 
Hi I tried a reslo transformer to no avail, so am not really sure what mic to use! Manual is referring to a mic of 30 ohms! (is this therefore low impedance?)...

jim_beacon 31st Oct 2004 3:44 pm

Re: Vortexion reel to reel Series W.V.B. 5+6
 
30 ohms is about right for a Reslo ribbon mike without the transfromer, and yes, it is low impedance.

Jim.

bryans900 31st Oct 2004 3:54 pm

Re: Vortexion reel to reel Series W.V.B. 5+6
 
Thanks Jim for info I dont have an original microphone.
Using a 'dynamic' mike (600 imp) with/without Reslo transformer, but alas, still ineffective!
I'll have to try and access a low impedance one. Bryan.

jim_beacon 31st Oct 2004 7:15 pm

Re: Vortexion reel to reel Series W.V.B. 5+6
 
Bryan,

the Reslo's do turn up on eBay, but seem to fetach silly prices!

Jim.

bryans900 31st Oct 2004 7:30 pm

Re: Vortexion reel to reel Series W.V.B. 5+6
 
Yes they do! (for what they are...)
A Southern reel to reel enthusiast is selling me an orig mic. Best for now-Bryan.

bryans900 31st Oct 2004 10:57 pm

Re: Vortexion reel to reel Series W.V.B. 5+6
 
Tried some " echo " on the Vortexion last night! sensational results; an old 45 0f Mike Sarne " Will I What? " recorded direct from record player to high speed recording-then slowed down to next speed! etheral voices on the vocals!! e-e-r-i-e but fascinating-secret in carefully reducing the bias on re-recording.
Incidentally has anyone EVER seen a STEREO CBL 6 Vortexion?
Bryan.

Ed_Dinning 1st Nov 2004 5:09 pm

Re: Vortexion reel to reel Series W.V.B. 5+6
 
Hi Gents, If you are looking for effects on tape recorders, as Bryans says, you need to vary the bias. If you can get hold of a Radivet test set (see an earlier thead) , these allow you to record and observe the playback wave form at various speeds and bias settings. A very useful bit of kit to characterise your recorder.

Ed

reel-to-reel-man 7th Jan 2005 8:14 am

Re: Vortexion reel to reel Series W.V.B. 5+6
 
Hello, I own a CBL6 recorder along with many mono ones, I noticed your having mic problems? tell me when you play back, is the output very loud and sharp as I had a similar problem with a loos wire causing the tone not to work, does the meter move when you record from the Mic?


All times are GMT. The time now is 4:45 am.

Powered by vBulletin®
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Copyright ©2002 - 2021, Paul Stenning.