Different Tubes In A Tube Tech CL1B

[dotl]

Guys what are you talking about?! I was talking about the samples, how they SOUND and didn't said that they null, that's impossible...i said they ALMOST null (analyzed in cubase).

[Matt Syson]

Hi
On a CL1B the valve circuitry is only a fixed gain (about 30dB) amplifier with an opto compressor in front of it. Performance due to the valves alone, assuming they are working to the same 'spec' will be minimal. Variations in performance due to compressor settings are likely to be greater than valve characteristics alone. If checking for valve variation on this unit, the compressor should be 'disabled' (1:1.2 ratio and threshold off)
A comment earlier about a HF 'boost' sheen or whatever on a HARDWARE as opposed to the pluging is likely if the output is not terminated into 600 Ohms and also depending on cable capacitance as there is a HF lift when running into loads more than 600 Ohms. This would be exacerbated if running into say a real Pultec EQ with a transformer input whilst being nominally 600 Ohms is reactive.
Matt S

[dotl]

Originally Posted by Matt Syson

Hi
On a CL1B the valve circuitry is only a fixed gain (about 30dB) amplifier with an opto compressor in front of it. Performance due to the valves alone, assuming they are working to the same 'spec' will be minimal. Variations in performance due to compressor settings are likely to be greater than valve characteristics alone. If checking for valve variation on this unit, the compressor should be 'disabled' (1:1.2 ratio and threshold off)
A comment earlier about a HF 'boost' sheen or whatever on a HARDWARE as opposed to the pluging is likely if the output is not terminated into 600 Ohms and also depending on cable capacitance as there is a HF lift when running into loads more than 600 Ohms. This would be exacerbated if running into say a real Pultec EQ with a transformer input whilst being nominally 600 Ohms is reactive.
Matt S

Tnx for clarifying that

[Chris Lago]

Why isn't someone selling one?! Damnit!

[Matt Syson]

Hi
You can get a new one with warranty from TubeTech and I think their new 'rack module' may be of interest.
Matt S

[djzaga]

it seem interesting to see the test,i own a CL 1A i have to sets of tubes yone telefunkens that are superb,and another using a IE ECC82 and another JAN philips military,they have diferent sound,but all good i would love to test the mullards,my boys in the studios all arund london the all stick in the philips and mullards,the rusian tubes tend to make the sound blury or mudy,it change the dinamic of the sound,did not like it.
i will let you guys know when i do it,when i have time

Originally Posted by BOWIE

Oh, I see. I was under the impression that yours were mixed up.



Has anyone had a chance to take that dry file that Johan posted and run it through their CL 1B w/ upgraded tubes?

[djzaga]

You need 2 tubes 1 ECC82 & 1ECC83,prferable good quality ones,mullards philips,telefunken,mazda,and so on,the vintage tubes where build on diferent standard of quality,with higher quality control standards,new technique have lowered quality.
do not even think to use chinese tube the do not meet the standard for a tube tech.
i do not really know the exact wodrs to describe this but try,tube tech CL1A or 1B can tolerate up max of 185 mili something coming from the tube,cheap tube easy overpass this to up to 225 mili wathever.
your tube tech can handle it and even work for years like that,but at some point,a vital component will blow,it cost arond £75 plus 2 Hours of work.make in it 175 in UK.
then chnaging tubes is not just take one out and plugin another one. sometimes the unit needs to recalibrated,so the VU meter readings are acurate.and also test the valves for make shure the valves do not over pass those miliwhatever.
ii hope you get a better picture.whatever you do do not use chinese or rusian tube,remember something.
what makes a tube tech sound and stand are the tubes,the better the tube the better the result.
why do you think that are tubes out there that worth 1200 dollars,would you buy a rollsroyce and then put budget tyres?
If you need i can put you in contact with someone in germaby that have telefunkens tested at reasonable prices.

Originally Posted by James 'LA' Lugo

So what are th
e model tubes I need?

Sorry for the confusion, I'm just not a tech dude at all and these type of threads lose me. How many and what exact models?


Thanks

[SUN81]

I just want to thank Johan for doing this shootout. It was immensely helpful in me finding my ideal vocal compressor, which is a CL1B with the Telefunken tubes. There was always a little something that bugged me about the CL1B's midrange. I never really gave much thought to the tubes, but swapping the stock to the Telefunkens really did the trick. They smoothed out the mids and extended the lows and highs in a beautiful way! Everything became nicely evened out.

Thanks again for all the legwork you did.

[World Studios]

Many thanks! You are welcome!

[Directimage]

I changed the jj tubes out with telefunken and it was a dramatic change for the better. A Wunder CM7 and a Vintech 73 pre