Re: tape deck setup question
From: b (reverend_rogers_at_yahoo.com)
Date: 10/24/04
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Date: 23 Oct 2004 18:13:04 -0700
"tempus fugit" <toccata@no.spam.ciaccess.com> wrote in message news:<BJted.2147$57.1813@fe51.usenetserver.com>...
> Hey all;
>
> I've got a Technics tape deck (RS-B18) that is about 20 years old. I had
> some problems with intermittent channels (rec and play) and took it apart to
> see what I could do. I found a cold solder joint in the signal path and
> resoldered it, which (so far, anyway) has fixed the problem.
>
> However, there are a few things I'm wondering about. First, the levels (as
> indicated on the meters) are lower in playback than record. IOW, if I record
> a cassette with the levels reading around 0, the tape will play back with
> the levels at, say -3 or so. It also varies depending on how the noise
> reduction and bias is set:
>
> 1. No Dolby, CrO2 - levels are pretty much the same
> 2. Dolby B, Cr02 - levels slightly lower on playback
> 3. dbx, Cr02 - levels considerably (3 - 6 db) lower on playback
> 4. any or no noise reduction, Metal - no playback at all (this has been a
> problem since I got the deck)
>
> I can post more combinations if need be, but I hope that this will give the
> general idea. I also cannot remember if this was the way things were going
> before the repair (I think it was though).
> Are these type of discrepencies normal, or can/should I adjust things to
> equal them out?
>
> I also noticed that the playback was a little dull after the repair (to be
> honest, I hadn't used the deck in quite a while, so it may be the way it
> always sounded). Would this be a bias setting that I may have inadvertently
> moved while repairing? or perhaps it needs some adjustment in another area?
>
> Thanks
I sympathise with all the above, but when all's said and done we are
talking about a 20 year old machine using a format which is rapidly
growing obsolete. there must come a point at which one asks: is this
worth spending time and money on?
Second hand markets are full of cassette decks, even hi-spec ones,
going for ridiculously low prices (seeing as CD-R has occupied the
mainstream for home recording.)
Rather than spend time on your present machine which will possibly
need a schematic and test equipment to rectify completely, it may be
simpler to get a decent , tested, quality 3 head machine from a
reputable dealer if you really want a good spec cassette machine.
Ben
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