Sonic Frontiers SFL-2 - Schematic / Service manual

[Analogico]

Hello everyone,

Does anyone have the schematic for the SFL-2 preamp PSU? Or, the Service/Repair Manual?

Thanks in advance for your support.

 

[Eli Duttman]

Years ago, Sonic Frontiers/Anthem/Parts Connection was bought out by Paradigm Speakers. So, try contacting Paradigm.

Parts Connexion is run by "survivors" from the Paradigm buyout. So they may be able to help too.

 

[duncan2]

Are we talking ---Sonic Frontiers -Line 2 ?--

If so Wordpress seems to have it but you need to login and as its HTTP not HTTPS so can be intercepted I didn't do it ,but if that doesn't bother you and many don't bother then go ahead .


My own conscious wont let me link it directly but its resatite.files.wordpress.com

 

[Koonw]

Only preamp, no psu sch in sight, maybe you have it already:
Sonic Frontiers SFL-2 - Le forum Audiovintage
K&K Audio / Lundahl Transformers

 

[Analogico]

Thank you all.

@Eli Duttman,
I'm considering contacting "Parts Connexion" as a last resort plan.

@duncan2,
I'm really referring to the "SFL-2" and not to "Line 2" preamp.

@Koonw,
You got it right, I already have the preamp circuit, but I'm missing the PSU circuit.

 

[duncan2]

In that case you are looking for the SF--power 1 or power 2 manual .


I nearly had it on manualslib but cant get by --"robocop " recapcha.

 

[Analogico]

Thanks, but I'm not looking for any Sonic Frontiers power amplifier manual.

Sonic Frontiers had multiple preamps, "Line 2" was one of them, as was "SFL-2" (from a previous generation).

I am looking for the "SFL-2" preamplifier schematic, specifically the PSU schematic.
If anyone can help I appreciate it.

 

[duncan2]

Lets get this straight the preamp schematic you are looking for is for a SF preamplifier that has a BUILT-IN power supply not the ones I have seen with a SEPARATE power supply ---right ??

 

[Analogico]

This is the preamp I'm referring to:

 

[Analogico]

The preamp has a separate power supply. And, it's precisely the schematic of the separate power supply that I'm looking for.

 

[duncan2]

Well I did try - three different search engines -three different browsers --still no schematic for the power supply , maybe some young guy with "golden keyboard fingers " can find one -----I cant !

 

[Francois G]

@Eli Duttman,
I'm considering contacting "Parts Connexion" as a last resort plan.

@Analogico,

Don’t hesitate to contact Parts Connexion to request the schematic you need. Chris Johnson (who founded both Sonic Frontiers and Parts Connexion) was very helpful to me when I was looking for a schematic of an a SF amplifier, and email the schematic and entire service manual to me. If he has it archived I expect he would gladly help you with the schematic.

Good luck!

 

[OldHector]

The Line-2 also has a seperate PSU with a similar number of discrete power sources. It has a similar complement of tubes, so there ought to be a fair degree of commonality between the PSUs.

There is a repair manual with a schematic on HifiEngine ...
Line-2

Maybe you can derive the PSU from that?

 

[Analogico]

Thank you all.

@ duncan2:
I appreciated your effort.

Francois G:
I'll follow your advice.

OldHector:
Good idea, but it's better to contact Parts Connexion.

 

[east electronics]

here is a question .
I have a Line 2
i got problems in the power suply in the HV sections which i am going to try to solve
what bothers me that while i am in HV trouble machine powers up form the front unit goes to mute and then mute is disengaged and machine appears to be ready to operate but there is no input control or any other control form the front plate
I can assume that the logig board doesnt operate unlees all HV is present
Though if i have problems on teh logic circuit also i am not shure that this will ever work
Any info about the operation ?

 

[adlerburg]

Hi Analogico and any other SFL-2 owners... Did you ever get the service manual and schem for the SFL-2? I have one as well, and I need to upgrade a few of the caps to better match my amp. I have searched far and wide with little to no luck. I've been in touch with Chris @ Parts Connexion multilple times over the years for parts tubes etc, but I'm guessing he's just swamped this year, as I've not heard back from him after trying many times ... and I don't feel comfortable asking again... I have the caps (V-cap Odams), but I really need the schematic to map them.. I guess I can trace it with my meters, but having the schematic is really best. Thanks for any help
Warmest regards and all the best!
Mick

 

[Analogico]

Hello adlerburg,

Unfortunately I won't be able to help you because I couldn't get either the Service Manual or the schematic.
Good luck with the capacitor replacement.

Happy New Year!

 

[adlerburg]

Hi Analogico and any other SFL-2 owners... Did you ever get the service manual and schem for the SFL-2? I have one as well, and I need to upgrade a few of the caps to better match my amp. I have searched far and wide with little to no luck. I've been in touch with Chris @ Parts Connexion multilple times over the years for parts tubes etc, but I'm guessing he's just swamped this year, as I've not heard back from him after trying many times ... and I don't feel comfortable asking again... I have the caps (V-cap Odams), but I really need the schematic to map them.. I guess I can trace it with my meters, but having the schematic is really best. Thanks for any help
Warmest regards and all the best!
Mick

 

[adlerburg]

Thanks so much. I lucked out today! The guys over at Parts Connexion sent me the full Schematic for the SFL-2 .... and now the blind can see!

 

[ungie]

Thanks so much. I lucked out today! The guys over at Parts Connexion sent me the full Schematic for the SFL-2 .... and now the blind can see!

Would you be so kind as to send me a message...I'd love to have a copy of the schematic for the SFL-2.

Thanks!