500/51X Series SLQ51X SSL styled 4000 EQ / Filter

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fragletrollet

Well-known member
Joined
Sep 19, 2010
Messages
379
Location
Oslo
Just finished my two units, both seem to work as intended on first power up. Calibration of the mid bands was easy, although I still need to fine-tune the calibration of the filters. Still pretty new to REW so gotta get used to it. Went for ~30hz on the lo-cut filters and stock on hi-cut. Both filters cut where they're supposed to, but gotta tune the trimmers so there's nothing else happening 😀

Very nice kits, missing 3 12k resistors in one of them but otherwise all in place.

Enjoyed the chocolates too, not to mention the DI businesscard!
Would definitely recommend and buy again 👍IMG_20210706_025415.jpg
 

technoteo

Member
Joined
Mar 27, 2010
Messages
17
Location
italy
Hallo @Kevin
Do you know if it's possible to "improve" the EQ using OPA 604 or similar opamps instead of NE5534. I did this on a GSSL clone and it was great.
 

Kevin

Well-known member
White Market Member
Joined
Dec 15, 2009
Messages
100
Location
Germany - Chemnitz
Hallo @Kevin
Do you know if it's possible to "improve" the EQ using OPA 604 or similar opamps instead of NE5534. I did this on a GSSL clone and it was great.
The OPA 604 seems good, footprint seems to work as supposed, you can leave away the 22pF Caps, but you will need at least 10 OPA 604, if you want to have the Full EQ including filters then you need 16 OPAs.
 

Golgoth

Well-known member
Joined
Jul 24, 2015
Messages
126
Location
France
Anyone using these could provide some feedback? I am super interested in that kit but I was not able to find any reviews from users anywhere yet! Thanks :)
 

Forcemusicgroup

New member
Joined
Sep 12, 2019
Messages
1
Hi. I purchased your SSL Style EQ. The Low shelf and high shelf switches are no longer working... Where should i start looking?
 

Kevin

Well-known member
White Market Member
Joined
Dec 15, 2009
Messages
100
Location
Germany - Chemnitz
check all connections and also if switches work. normally there is not so much around the shelf filters. or do you mean the low and high cut?
 

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