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In Reply to: RE: Home recording posted by LtMandella on January 12, 2020 at 12:36:18
dbx 224 should do the trick for you, and they are not expensive these days.At that price you can afford to try it. Yes, on some material you may be able to notice its effect, but generally speaking it is plenty good.
Problem with dbx is the compatibility. But it all depends on your particular needs.
For this reason I don't use any noise reduction.
Edits: 01/12/20Follow Ups:
and dbx 150 Type I noise reduction unit that I was using with my Revox A77, Teac and or Otari RTRs. I find that type II sound somewhat a little incoherent and compress against type 1 which was a bit more open but at the expense of pumping sound intruding into the music every now and then. But it was barely noticeable mind you unless you're only focusing on it. Also, I noticed that the Otari greatly benefited from it as I've never heard it sounded so much better especially on the 15IPS at IEC equalization. I quit using them after I got my Revox PR99 MKII restored.
I can't remember selling them so I probably still have them in the closet somewhere.
If a thing's worth doing, it's worth doing well
(Proverb)
I bought it not too long ago to be used with several "Direct to Tape" rerecorded tapes that I still have. I think I paid $70 for a mint unit.
I don't use it for anything else, as I believe in purity and simplicity.
That is one of the main reasons I quit using them. Heck, I rarely use the Dolby C noise reduction on my Revox B-215 cassette deck unless the vinyl that I'm recording from has some inherent tape hiss in it.
If a thing's worth doing, it's worth doing well
(Proverb)
I know some people put their ear to the speaker and expect to hear nothing. With analog that doesn't work. I can easily listen through some hiss - unless it is very high I don't even notice it.
would agree with the comments made by Bill and Victor. If you can swing it, half track the way to go.
If not an option, and you are locked in the 707 and 909 or similar machines and formats, dolby HX pro or an outboard Dolby S encoder may be an option or alternative. Problem wth DBX is once encoded, you can only playback with DBX, not without it.
on either quarter track machine you can also make a significant improvement by taking the signals off the tape heads and route to a tube tape head preamp. Their playback circuits were designed in the days of high neg fdback to lower THD levels, so much better sounding alternatives are out there now.
Quite a few of the tube phono stages are available, and not a lot of cash. you would have to modify the RIAA eq curve to fit either NAB or IEC tape curve. so would need some basic soldering skills.
[[ taking the signals off the tape heads]]
Interesting idea, especially if the deck's preamps start to give me trouble (pioneer tape deck preamps have a common problem with corroded transistors).
I have good soldering skills. Would not be difficult I think to tap into the direct head output but noise could be a problem routing to external tape head amp.
My playback system is already all tube - Transcendent Sound Grounded Grid preamp and Transcendent T8-LN OTL amp.
There must be something wrong with me for not having something wrong.
I have two such installations, both using modified our tube phono stages. One uses single ended connection to the head, the other one balanced. Both are much quieter than the tape. Both are set to work at 15ips, either NAB or IEC. Here is one of them. In both cases I simply run the cables over the top cover panel.
Edits: 01/14/20 01/14/20 01/14/20 01/14/20
Mine was the Otari MX5050 MKIV similar to the photo above that I destroyed the electronics on it when one day I decided to use too much deoxit to clean it up. I thought I was being careful when I was cleaning it, however, I didn't know that some of the liquid leaked inside the electronics module. Needless to say, when I turned it on again I smelled something funny and then nothing... What a waste as I always loved that machine. Oh well live and learned I suppose.
BTW, the 3-prong wall socket on the wall behind the Otari is that an M.E.S DOUBLE SOCKET OUTLET 2 x 3-pin outlet 250V AC 16A I thought they only use that kind of wall socket in Europe.
If a thing's worth doing, it's worth doing well
(Proverb)
Yes, those are 240V outlets, they are actually in use in the US.
I still have the MX5050 BIII among my machines, had it for many years, and love it.
I like that individual reel size feature on MX50 and your deck.
Is the unit under your Otari an external tape head preamp that you had designed? The reason I asked this question is I've never used one. My preamp which is a Krell Evolution 202 has the tape input and tape loop that serves me well and soundwise it is better than the Audio Research Ref1 that I used to own prior to it.
If a thing's worth doing, it's worth doing well
(Proverb)
Yes, it is based on our VK-P12SE phono stage, modified for tape EQ's. The dials above the front panel allow me to adjust it very easily, using test tapes. The switch selects NAB or IEC.As far as the Tape input on your preamp, I would check what it is exactly. Sometimes it is just another line level input, just marked that way for convenience. But if it is indeed a sensitive input with tape type EQ - that would make your job much easier.
Edits: 01/15/20
as I have to toggle it off first before I could change the input again or I could be wrong. In any case, it sounded excellent with any RTR that I've tried in the past which include Otari, Revoxes, Dokorder to Teac.
Anyway, that unit you have looks very expensive...I wish I could listen to it to hear the difference compared to the one I have.
If a thing's worth doing, it's worth doing well
(Proverb)
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