IT SLIDES! Leak 3007 Slide Eject Cassette Deck - Service, Repair & Calibrate
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- Опубліковано 7 вер 2024
- I have been working on this deck for a while now, and it's finally come to the day it is repaired, serviced and fully calibrated. what an odd deck with its slide eject mechanism - but such a lovely deck to work on.
Enjoy the ride with me as we get right I to this and carry out all the necessary work!
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I had a Hitachi deck with the same type of cassette system. It was a good deck!
Hi Paul. It is like the Technics RS 671 USD that I own ans serviced. The cassette mechanism is awesome and the Technics has an illuminated mirror, so that you can see the tape better. The autostop is driven by a reader as in the Leak, but Technics made it more complicated They set up a whole circuit with transistors and stuff. I had to chase the signal down to find the issue with not working autostop. It was a NEC 1096 transistor. I replaced it and now it works. Crazy 70's stuff, but I love it.
Thanks for this very nice video, I love it.
Thanks! The addition of a mirror would have been nice. I just love the fact that it's so different. Can you imagine the pitch to the board when someone came up with this design 😅
@@pwrestoration 😅 yeah for sure. They had to brainstorm to get something fancy, too😂.
Yes after looking inside, I recognise everything this is almost identical to a Teac A-150. I know that cassette deck very intimately.
Possibly a Toshiba? Rank worked closely with Tosh in the late '70s and ended up buying their factory when they went under.
I’m thinking it’s more like a Pioneer. I own a CT-F7171 and this seems somewhat similar.
@@malcolden7788indeed I think you're right, looks very similar to the CT-F7070 in fact, other than the 45 degree cassette loader.
Leak? That's a blast from the past!
They were considered an audiphile brand in their heyday.
Nice to see that some of their products still exist.
They made some nice amps too, back in the day.
Were they really? I didn't know that, I thought they were the opposite - kind of a lower end of Technics for some reason. Probably due to the similarities between their stuff.
@@pwrestoration Yeah, they were quite expensive kit, not quite as expensive as Quad, or Naim, but they graced the shelves of most high end hifi stores. I think they peaked around the late 1970's to mid 1980's, and pretty much disappeared after that.
That deck you have there, I'm guessing is a very early 1980's example, just before Dolby C started to become mainstream.
Dolby FM I believe was an option in the USA where some broadcasters encoded FM transmissions, and users needed a Dolby decoder to improve S/N ratio. Some Radio Shack decks had the same feature. As far as I know (and I could be wrong) Dolby FM was never used in Europe.
Ah maybe this explains it then! I'll maybe message the decks previous owner!
Wonder if it works in a seminar way to MPX filter?
Dolby FM worked in much the same way that Dolby noise reduction on tapes worked. It used an algorithm to detect low level input signals and artificially boost certain frequency bands that correspond to the typical background FM/Tape noise, so when it was played back through the decoder it would redress the gain of those same frequency bands, which also depressed the relative level of the unwanted system noise.
As you engaged the Dolby FM button on the deck, it would apply the decoding filter to the input signal, and I'd guess that 6kHz would fall into one of the Dolby frequency bands so the signal you saw displayed was correspondingly reduced. To get Dolby to track and decode the FM or play back levels accurately requires the signal fed to the decoder to have the correct dynamics.
I'm guessing to avoid having to adjust the line level inputs each time you want to listen or record a Dolby FM broadcast, Leak fitted the back potentiometers so the user could go through the set procedure once, and know each time they push the FM button it will be aligned and ready to receive the broadcast.
In theory you could record a DolbyFM broadcast and the recording could then be played back on any Dolby B compatible system.
Great, thanks!
Nice Video squire, I’ve not seen a Deck like that made by Leak before, My Dad had a a very similar looking Deck with the angled Deck and the Hydraulic up & over door although my Dad’s was a National Panasonic & Black not Silver, It was passed to my Sister after my Dad passed and she has said that I can have it so look forward to having a play with it when it is in my hands, I do believe that Pioneer made a similar Deck too and believe Techmoan demonstrated it on his Channel.
At: 30:00 onwards, 12VoltVids uploaded a Video where he describes the function of the Dolby FM, I believe it was something to do with a Radio Station broadcasting a Signal at a particular time which I believe would normally be after Midnight which then enabled you to calibrate the Dolby FM circuitry and helped when you were recording from a FM Radio Station, I believe that’s correct & hope that helps! Anthony - Birmingham!
I do believe the pioneer one was actually just about identical!
Hello PW Restoration, I have the TECHNICS RS-615US, and the load system is exactly like this one.
All of the 3000 series components were produced for Leak by Rotel. They in turn would have sourced the transport from a third party Japanese maker.
I imagine the transport is most likely something like a Sankyo mechanism. This is a very similar to the Panasonic / Technics RS-612US and a few others
This looks like a redesigned Teac A-150
Closest thing i have seen looks wise is a pioneer CT F6161 ,Some of the other leak decks were made by nakamichi .Great looking deck though.
Good result and an interesting deck. Setting/adjusting VU meter levels, playback levels and recording levels with just a test tape isnt really possible I guess?
Playback levels yes, if you're confident it is correct. I always set playback volume (IE if you suspect the pots have been played with) using 400hz tones.
VU levels again can be set using a test tape as long as you're confidebt it's good.
Recording levels you need to ensure the input is good 😊
But! Usually they're all fine and it's your fiddling that can knock them out. If they look fine, they probably are!
@@pwrestoration The test tape I have is 3khz. at 0db, Without an oscilloscope, is it possible to say whether the meters are reading low, and need adjusting, or the out put pots are too low ? Turning the output pots up, to get the meters to read 0db, or adjusting the VU meter pots to show 0db? The manual does talk about measuring the output voltage during playback of a 0db signal,
on the line out I think. The player is actually sounding good, and never been adjusted since I bought it , in about 1982. I have a Marantz/Superscope cd330 portable 3 head machine. Pricey at the time, but apart from belts, its been brilliant
@@Stephen.C. I guess it's along the lines of how much trust you have in the tape and if it's what it says it is.
I had a 3khz tape off eBay last year and one channel was recorded lower than the other it caused all sorts of issues.
However. The tape may be perfect. But your head may not be, and as you say it's difficult to deduce logically without a good input, and a good base to start with.
You could in fact end up just masking faults. But let's be honest, all you want is for it to sound good, so that really doesn't matter. If your tape is good, calibrate the levels and speed off it, and go from there.
Do speed before levels!
Really you need an oscilloscope - they're pretty cheap at around £30 used? It must be two channel.
Once you have calibrated one deck with it you can make your own tapes!
I use a400Hz tape, too. For playback perfect.
Dolby FM -> de.wikipedia.org/wiki/Dolby#:~:text=Dolby%20FM%20mit%2025%20%C2%B5s,extern%20nutzbar%20gemacht%20werden%20konnte.