GroupDIY

Marketplace => White Market => Topic started by: joe-electro on April 12, 2019, 03:20:33 PM

Title: New Kenetek T4B Opto-Attenuators for your LA-2A, LA-3A and similar builds
Post by: joe-electro on April 12, 2019, 03:20:33 PM
(https://www.gearslut.com/GroupDIY/T4B_Ortho_680x960.jpg)
(https://www.gearslut.com/GroupDIY/T4B_Closeup_960x556.jpg)
(https://www.gearslut.com/GroupDIY/GenuineKenetek_960x1039.jpg)

Kenetek T4B Opto-Attenuator units for your LA-2A, LA-3A or similar projects. Available in 5 different speeds: Classic (Medium), Good Slow, Good Fast, Wayyy Slow and Stupid Fast. For overall general purpose work the Classic is your best bed. Use a Good Slow for bass and male vocals. Some people prefer a Good Slow unit on female vocals as well.  Good Fast units are best for drums, acoustic guitars, electric guitars, and up tempo music in general. Wayyy Slow is more like a leveler of the early to mid sixties.  Stupid Fast units are almost as aggressive as an 1176 with all four buttons pushed in.

Kenetek T4B's are the best selling T4B on the planet and are in use every day in studios all over the world making great music. Leading manufacturers including Warm Audio, Stam Audio, Serpent Audio and Skibbe Audio have all chosen Kenetek T4B's to ship with their new products.

Every T4B comes with a 3 year warranty and goes through no less than 5 quality tests before getting approved for shipment. Each unit comes with its own warranty certificate showing the date of purchase and serial number.

Matched pairs for stereo mix buss and mastering use are available, as well as Fast/Slow pairs for specialty builds. The T4B unit is the heart of the sound in an Opto-style compressor.  Your build deserves the best T4B you can get - a Kenetek T4B.

Order here:

https://www.gearslut.com/index.php?main_page=index&cPath=84

Thanks!!!
Title: Re: New Kenetek T4B Opto-Attenuators for your LA-2A, LA-3A and similar builds
Post by: ruffrecords on April 16, 2019, 04:20:53 PM
I thought labels that say "warranty void if removed" are either illegal or unenforceable.

Cheers

Ian
Title: Re: New Kenetek T4B Opto-Attenuators for your LA-2A, LA-3A and similar builds
Post by: joe-electro on May 07, 2019, 08:19:50 AM
The FTC says you can repair your own things and manufacturers cannot force you to use their repair services.  Kenetek has in the past, and will continue to honor the warranty on all Kenetek T4B's unless there is obvious damage from misuse or abuse.

Thank you.

PS - Our return rate is less than 1 unit per thousand sold. That is, <0.1%.
Title: Re: New Kenetek T4B Opto-Attenuators for your LA-2A, LA-3A and similar builds
Post by: XAXAU on July 05, 2019, 11:07:48 AM

Kenetek T4B Opto-Attenuator units for your LA-2A, LA-3A or similar projects. Available in 5 different speeds: Classic (Medium), Good Slow, Good Fast, Wayyy Slow and Stupid Fast.

Hi this might be a stupid question but is it possible to have a slower attack and a more popping faster release built into these?
Or modify the resistance going into the cell to get a longer attack and use a faster cell?
Unsure how this circuit works to be honest!

Cheers
Title: Re: New Kenetek T4B Opto-Attenuators for your LA-2A, LA-3A and similar builds
Post by: joe-electro on July 05, 2019, 11:42:37 AM
This is very difficult to do because the attack and release times are co-dependent. In other words, photocells with a slower release time also have a slower attack time.  Cells with a faster release also tend to have faster attack.  There is a wide variation in attack/release times between photocells within the same batch, due to the manufacturing process.  The photo-reactive material is mixed into a slurry and then sprayed onto the substrate, and not all photocells get the same density of material.

I can select out photocells that have a slightly slower attack and a slightly faster release, but this would be a laborious process. I would have to charge extra for the extra labor.

It's relatively easy to get photocells that have slower attack and release, or faster attack and release. These are what I call "Good Slow" and "Good Fast" T4B's, which you can specify when you order.   You might try a "Good Fast" and see what you think.

Thanks!!!

Title: Re: New Kenetek T4B Opto-Attenuators for your LA-2A, LA-3A and similar builds
Post by: XAXAU on July 09, 2019, 08:52:19 AM
This is very difficult to do because the attack and release times are co-dependent. In other words, photocells with a slower release time also have a slower attack time.  Cells with a faster release also tend to have faster attack.  There is a wide variation in attack/release times between photocells within the same batch, due to the manufacturing process.  The photo-reactive material is mixed into a slurry and then sprayed onto the substrate, and not all photocells get the same density of material.

I can select out photocells that have a slightly slower attack and a slightly faster release, but this would be a laborious process. I would have to charge extra for the extra labor.

It's relatively easy to get photocells that have slower attack and release, or faster attack and release. These are what I call "Good Slow" and "Good Fast" T4B's, which you can specify when you order.   You might try a "Good Fast" and see what you think.

Thanks!!!
Cheers

In most other comps  the attack and release can be altered, I understand that a slow cell is slow on bothe the attack and release side

But is there anything that can be done outside of the cell that will slow down the attack? Then pair that with a really fast cell?
Title: Re: New Kenetek T4B Opto-Attenuators for your LA-2A, LA-3A and similar builds
Post by: joe-electro on July 09, 2019, 10:25:03 AM
Since the electroluminescent panel in a true T4B requires an AC signal, I don't know of any easy way of slowing the attack down without affecting other aspects of the sound that we want to keep intact (such as frequency response).  However, if you use an LED as your light source then you can use a nice sidechain circuit such as the Forrsell opto sidechain, which is very versatile and has a very effective attack control. Schematic can be found here:

http://www.forsselltech.com/media/attachments/SideChain_B.PDF

Thanks,

Bill