SSL comp clone - 1st build - BOM questions

[abechap024]

Yep its easy to get carried away with all the options (trust me I know!). and then it can get really confusing tracking down a problem if something isn't working.

I built 2 regular Gssls and use them all the time. And in 5 years haven't looked back.

I know its probably very tempting to want to learning everything all at once, and maybe a little frustrating when there seems to be so much to have to learn, and you just want to get some working equipment dang-it! haha. But take your time...its all worth it.

 

[hally]

Also, when not confident, build a stock unit. Don't include things like side chain listen and such.
Make the stock unit work but don't do the frontpanel yet.
When the stock unit works you can add things like I did and finally make a front panel.

Yep its easy to get carried away with all the options (trust me I know!). and then it can get really confusing tracking down a problem if something isn't working.

Yes, you are both right, its time for me to calm down and stick to the stock unit!!!

Thanks for the advise
hally

 

[czybulski]

I contacted Chef from audiokitchen for pcbs. I want to get two of them, in case I make a mistake or want to build a second one after I'm finished...

I found almost all the other parts at a German online electronics shop (http://reichelt.de/).

What VCAs are you getting? I find this site a little bit confusing: http://www.cedos.com/vcas.htm

Cheers, Czyb

 

[abechap024]

Yes good rule of thumb to build 2 at once. That way if one has problems you have another one as refrence (hopefully unless you made the problem on both) But usually problems tend to be sodler blobls and maybe an accidental one time wire mistake or part mistake,

Also buying parts in higher quantities often gives you a cheaper price per part...so in a weird way your actually saving money by building more at once.

Use THAT 2180 VCAs (the pre-trimmed ones) you can read this on the data sheet, but they come in three flavors, A,B,C

"A" being the lowest distortion, "B" middle and "C" lowest. (highest distortion, lowest price )

The type of distortion to my ears is "grainy" distortion....and yes you can hear the difference, it is often very subtle but its there. Also these are a little fragile if you hit them with too much voltage/if the circuit isn't working right. I just fried a 2180A yesterday cause I put an opamp down stream from it stupidly in backwards.....whats that burning smell...haha yea live and learn

 

[hally]

Hi abechap024,

"A" being the lowest distortion, "B" middle and "C" lowest.

Is a or c the lowest

thanks
hally

 

[Biasrocks]

This really belongs in the ongoing GSSL thread.

http://www.groupdiy.com/index.php?topic=47.0

You will find a wealth of information there.

Mark

 

[abechap024]

This really belongs in the ongoing GSSL thread.

http://www.groupdiy.com/index.php?topic=47.0

You will find a wealth of information there.

Mark

And the doors of information opened for our dear new friend hally


Yep helps keep everything organized!

 

[hally]

Hi abechap024,

You were explaining earlier on about the THAT 2180 VCAs (the pre-trimmed ones)

 

"A" being the lowest distortion, "B" middle and "C" lowest.

I think u made a typo


Is it A or C that is the lowest lowest

thanks
hally

 

[hally]

Hi Czyb,

I'm gonna use which ever one of these has the lowest distortion

http://www.profusionplc.com/pro/gex/pcatdtl0?ipartno=THAT2180AL08-U

http://www.profusionplc.com/pro/gex/pcatdtl0?ipartno=THAT2180BL08-U

http://www.profusionplc.com/pro/gex/pcatdtl0?ipartno=THAT2180CL08-U

just waiting for clarification...


Just saw this post

This really belongs in the ongoing GSSL thread.

http://www.groupdiy.com/index.php?topic=47.0

You will find a wealth of information there.

Am i in breech of forum rules, if so how do i move all this over to the GSSL thread

cheers
hally

 

[Biasrocks]

And the doors of information opened for our dear new friend hally

Absolutely, and it helps if us old timers gently coax the newbies in the right direction.

Don't forget the META's.

http://www.groupdiy.com/index.php?topic=16013.0

Mark

 

[abechap024]

Yes. The META Threads have EVERYTHING YOU COULD EVER WANT TO KNOW about an SSL build. TRUST ME i've been there, so have tons of other good folks all with the same lingering questions.

Also sorry for my typo, my brain and fingers....

C has the Highest distortion.

the datasheets are a better source for concrete info like that

Good Luck

 

[hally]

Before I quietly move over to the GSSL help thread, i just want to thanks all u guys for your help and patience...

how did u know i was a newbie?

Regards
hally

 

[abechap024]

....um your thread title  8)

and that your posting GSSL questions outside of the thread

Don't want you to feel like were shunning you, feel free to ask away! Thats how we all learn, and we can all help each other. It just helps to keep everything organized, cause no doubt someone in the not too distant future will have the same questions and if its all consolidated on the GSSL build thread it helps everyone.

 

[Holiveira]

Hello,

I'm entering this post because I'm starting in DIY. I'll build a Gssl and I have no doubt with the switch.
I want to use the EAO but do not know where I can use ... I've been reading this forum and I was doubtful.
I bought the PCB to the Chef and I am considering using a super side chain.  I want to use a EAO switch for ON / OFF and one for bypass.

You can give me one help?

thanks
Hugo

 

[abechap024]

Well switches are defined as follows:

Throw and Pole

Throw is how many "options" the switch has. an on/off switch has 2 options. A rotary switch might have up to 12 "throws" or "options"

Pole is how many "levels" to the switch. a power switch only needs one level. but lets say you need 2 separate wires to be switch to two other separate wires but only want one switch to switch them both , you will need 2 poles. usually a switch can go up to 4 poles...rotary switch more


Don't know if that was your original question....you will jsut need a single pole single throw for power and bypass..

 

[Holiveira]

Hi,

Thank you.

You helped me! I realized the pole and trow.
To power on / off i need. SPST.  But for the bypass  i ll  need a DPDT? because are two channels. Or no?