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Q & A / Re: New guy with probably an old question ?
« Last post by _peter on January 04, 2018, 05:11:27 am »
I tried to purchase the Sunn style tolex from Angela last winter and they told me it was sold out.
Would be amazing if they have it back in stock.
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Q & A / Re: New guy with probably an old question ?
« Last post by Isaac on January 03, 2018, 11:36:57 am »
I'd say that you're somewhat in luck, Tomm. The Sonaro was originally a combo amp with a single 15" JBL speaker. Later, it was split into a head/cabinet unit, still with a single 15", so a refrigerator-sized cabinet wouldn't be as authentic. On the down side, original cabinets are pretty hard to find. But if you're thinking of going custom built, that's not an issue.

I think that the original Sonaro cabinet (after they separated them) was 29x24x11.5. Later, in the early 70s, Sunn came out with the 115S, which I think was 24x24x15. The 2x12" Solarus cabinet is also 29x24x11.5, and is open back. Suitable for guitar, not so much for bass.
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Q & A / Re: New guy with probably an old question ?
« Last post by EdBass on January 03, 2018, 04:49:51 am »
The Catalog thread lists dimensions for most factory Sunn cabs;

'http://sunnforum.ampage.org/index.php/topic,4178.0.html

Never actually seem Angela tolex, but I don't think there is an exact match out there. Search "tolex" on this site and you can read the myriad discussions about tolex (and Grill cloth), it's a popular discussion with lots of helpful info.
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General Discussion / MOVED: New guy with probably an old question ?
« Last post by EdBass on January 03, 2018, 04:49:32 am »
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Q & A / New guy with probably an old question ?
« Last post by Tomm Williams on January 02, 2018, 02:34:13 pm »
Greetings all !

I recently acquired a nice '69 Sonaro head for a mere $400. I'd like to get a matching cab but (from what I'm seeing) Sunn wasn't exactly into portable/small cabs and I don't feel like lugging around a 2x15", 6x10" or any other box the size of a walk in closet. I have seen a 2x12" but it was from a later era so doesn't truly match. So my question(s) being: Did Sunn make smaller cabs during this period and if not, is the tolex from Angela a very close match? I happen to have a great relationship with near-by J Design Cabs who could make whatever I wish but I'd like it to look correct.

Cheers!!
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Q & A / Re: Cone Excursion
« Last post by Isaac on December 30, 2017, 10:10:30 am »
No, you're not missing anything. I meant to write, "the cathode bypass capacitor."
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Q & A / Re: Cone Excursion
« Last post by eddiemac on December 30, 2017, 09:51:09 am »
Thanks. Just one thing: 
Quote
"In this case, the cathode bypass resistor is plenty large enough at 250μF . . ." 
Am I missing something?
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Q & A / Re: Cone Excursion
« Last post by Isaac on December 29, 2017, 12:09:41 pm »
Any time there is a capacitor in series with the signal, it will function as a high pass filter. Also, the cathode bypass capacitor functions as a shelf filter, increasing the gain above the resonant frequency with the cathode resistor. In this case, the cathode bypass resistor is plenty large enough at 250μF that there is virtually no roll off above 40 Hz. The biggest bass blocker, I think, is going to be the .002μF cap that couples the anode of the first stage to the grid of the second. The .0075μF cap connected to the LO BOOST switch is there to let more bass through.

IIRC, on the 200S, the high pass is at 80Hz without the switch engaged, 40 Hz with. I would expect the Sorado to be similar.
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Q & A / Re: Cone Excursion
« Last post by eddiemac on December 28, 2017, 04:50:01 pm »
Can someone please tell me which specific electrical components are responsible for the roll-off (high-pass filter) in the Sunn Sorado?  I would like to check to see if they are in-spec.  Here's the Sorado schematic (click on the schematic and it will expand):

www.prowessamplifiers.com/schematics/sunn/Sorado.html
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Classified / WTB: Sunn Beta Lead
« Last post by lucas28 on December 26, 2017, 07:46:51 pm »
Looking for a Beta Lead. If anyone is selling one please contact me! Thanks!
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