Restored my dads R2R but no tape loop on integrated


My dad found his old Teac A-3300SX-2T in storage and I’m having it restored currently. I wanted to do some recording from my TT and eventually from a CD transport as well if I end up adding one. My integrated is a Cambridge Audio CXA81 with no tape loop (only a pre-out option).

Tape selector?

https://www.hifiengine.com/manual_library/sony/sb-500.shtml
https://www.hifiengine.com/manual_library/akai/ds-5.shtml

I found a few models like the Sony SB500 or Akai DS-5. My thought was to connect the Teac input/output to ‘Tape 1’, phono stage output to ‘Tape 2’ and output from ‘Source’ to a line input on my integrated. Would this introduce any type of feedback loop while recording?

This would save me from moving cables around but it also means that my TT signal is always passing through the switch even when listening to it directly. I’ve read that these older switches are prone to oxidization and require some cleaning usually as well as constant exercising of the switches.

I wouldn’t want to potentially degrade the sound quality of my primary listening source to allow recording to a R2R

Phonostage direct to R2R?

The other option would be connecting my phonostage output directly to the Teac whenever I want to record. But this would involve the hassle of swapping phonostage output from integrated to r2r and back. Also I would only be able to monitor the source using the headphone out on the Teac and the built in output selector switch.

Rethink CXA81?

Is there another option available outside of completely rethinking my choice of integrated amplifier? The R2R holds more sentimental value than anything so I feel like it would be silly to start swapping major components for an unexpected add-on.
jvonoldershausen

Showing 3 responses by elliottbnewcombjr

That deck is amazing, I had one S version, and your SX version.

The tape recorder automatically does the Tape EQ process during recording and during playback, so you can play it into any line level input. A pre-recorded tape will have been pre-equalized, and will be re-equalized by the recorder during playback.

It has EQ and Bias switches for two different tape types that existed back then: either NORMAL or HIGH (low noise/high output tape).

Recording source direct to tape inputs: You will VERY LIKELY be successful, you have meters and individual volume control for each track for both inputs while recording, and for output when playing. Start with your inputs turned down, you want to do a level test without blasting the meters and internals. You also have MIC inputs and individual volume controls for them. 

You want as strong a signal as possible without distortion, the content 'above' the tape's inherent noise. Don't be afraid to let the needles jump into the red some while recording, or playback, just don't over-do it. You use your amp's volume for the speakers. Some tapes were purposely recorded with one track slightly stronger than the other, so always play a segment listening/watching your meters, balance them, start over. 
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My 2 track stereo tapes are my best sounding source. They have twice the magnetic material of later 4 track tape. That deck also has the pro speed 15 ips as well as 7-1/2 ips (no 3-3/4 ips).

However, it is ’half track’, a dedicated 2 track head, with wider tracks than modern 4 track tapes. You can record stereo in one direction, and play what you record. You can play ONLY 2 track tapes, either ones you make, your father previously made, or VERY OLD (I have some) pre-recorded 2 track stereo tapes. Stereo in one direction, rewind. They existed beginning 1956 and ended when 4 track became popular, so content is limited by that era.

Another option is two independent mono tracks: either

a. same direction, turn one or the other track’s volume to zero (this deck has a separate on/off switch for each track); lots of rewinding involved; or

b. two mono tracks, different directions. use one track, record, flip tape, using the same head, record on the 2nd track the other direction.

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Buying tape: do some research, some vintage tapes had shedding issues. I have extra blank tapes (nothing special) if you want a few to mess with, send me a message, I'll send them. If you find you stick with it, then get high quality tapes.

Even when everything is perfect, many a track, analog or digital, is slightly off and a very small balance tweak can make a surprising improvement, to both imaging and individual instrument/voice distinctions.

I love my Chase Remote Line Controller RLC-1, it's remote volume and remote balance a wonderful thing! None for low price now it seems.

https://www.ebay.com/itm/234035488157?hash=item367d9a259d:g:FOsAAOSwhNlgmIqc

S/N 120 db, no one can tell if it is in or out, I just went thru the same in/out listening process when I bought my Oppo CD player, and it just invisibly does it's thing. Intellectually, I want the simplest chain, but functionally, at no detriment, I'd be crazy to deny myself remote balance.
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It's good you know the system, the problem is only somewhere in the TT path.

It might be anti-skate as you suspect,

doubt it's VTA causing balance issue no matter what thickness LP is.

Could be a cartridge pin wire, DIN pin, rca jack, cable. Tedious, but get a piece of paper, draw the path, check/change only one thing at a time, 

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buy one of these, helps with cartridge alignments,

and, for left/right balance: is it my anti-skate???? the smooth side will definitely let you SEE the effect of anti-skate adjustments as you make it. Spin manually, watch, adjust, spin, couldn't be easier.

https://www.ebay.com/itm/333319932993?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&...

After a week, re-check, is the arm holding it's tracking and anti-skate settings? That's why I prefer the dangling weight, pure gravity.
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this LP (get the CD also) side 2, tracks 2 and 3, (you hear all 3 guitarists on those 2 tracks), it is my final anti-skate tweak, very revealing.

https://en.wikipedia.org/wiki/Friday_Night_in_San_Francisco


Chase RLC-1, $62. USD is a great price, you will love it, for any lp or individual track from your listening position!!! Same for any CD or Digital that has an imbalance, especially 'Greatest Hits' and compilations with tracks from many different original engineers, and who knows what happened later by someone with a cold that day effecting hearing in one ear ... late in their life when they didn't realize they had a problem. 

https://www.canuckaudiomart.com/details/649736266-chase-technologies-rlc-1-remote-line-controller-in...

Alignment is not supposed to be a nightmare, just done carefully, no need for perfection.

You will find the source of the problem, let it go for a while, use this gizmo for happy listening.