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SurfGuitar101 Forums » Gear »

Permalink The Surfy Bear Fet Reverb

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maximee
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Joined: Jun 04, 2014
Posts: 4
Germany
Link Posted on May 06 2015 11:32 AM

bjoish wrote:

Hi maximee

Welcome to SurfGuitar101 Smile

There are only minor changes between R2-3-4
One thing that is changed is that R4 has a trimpot for reducing the gain. If you get too much distortion when increasing Dwell, contact me and I will give you instructions for reducing the gain!

Thanks Björn, so far the gain is not too much, works as it should. Still a lot of hum, but that will go away once properly boxed up.

Have you had similar experience with the mixer pot as described above?

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bjoish
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Joined: Jul 06, 2010
Posts: 596
Stockholm
Sweden
2 Download Pins 4 Contributor Pins
Link Posted on May 06 2015 01:30 PM

maximee wrote:

Have you had similar experience with the mixer pot as described above?

I dont think the Mixer pot should be very sensitive.
My experience is:
3 -> 'normal' amount of reverb
6 -> plenty of reverb
10 -> a LOT of reverb

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maximee
avatar
Joined: Jun 04, 2014
Posts: 4
Germany
Link Posted on May 06 2015 03:04 PM

bjoish wrote:

maximee wrote:

Have you had similar experience with the mixer pot as described above?

I dont think the Mixer pot should be very sensitive.
My experience is:
3 -> 'normal' amount of reverb
6 -> plenty of reverb
10 -> a LOT of reverb

Okay, thanks for clarifying. I get this behavior more from 2-4. Not a big deal, but I'll look into it after I have put it in a nice box.
Looking to make a box similar to the one you made, so basically a Fender unit lookalike, but only smaller.
I'll report back soon!

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mike_fried
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Joined: Aug 02, 2012
Posts: 162
Nashville, TN
United States
1 Contributor Pin
Link Posted on May 10 2015 04:23 PM

maximee wrote:

Just out of curiosity, has anybody experienced somewhat finicky behavior of the B250K mixer pot? Most of the mixing happens in the first few degrees of rotation... To me it seems the linear taper is not really ideal. Has anybody else tried a log taper one instead?

Also, is there a changelog for all the revisions so far? I have the R2 revision.

Thanks to Björn for this nice project!

I had the same issue and a log taper (A250K) pot did resolve it very nicely.

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maximee
avatar
Joined: Jun 04, 2014
Posts: 4
Germany
Link Posted on May 11 2015 01:08 AM

mike_fried wrote:

maximee wrote:

Just out of curiosity, has anybody experienced somewhat finicky behavior of the B250K mixer pot? Most of the mixing happens in the first few degrees of rotation... To me it seems the linear taper is not really ideal. Has anybody else tried a log taper one instead?

Also, is there a changelog for all the revisions so far? I have the R2 revision.

Thanks to Björn for this nice project!

I had the same issue and a log taper (A250K) pot did resolve it very nicely.

Perfect, thanks Mike!

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ludobag
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Joined: Jun 05, 2010
Posts: 620
at south of
France
1 Map Pin
Link Posted on May 11 2015 11:59 AM

maybe your not play surf but stock the surfy bear do the tricks well

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LinkJr
avatar
Joined: Mar 13, 2015
Posts: 30
United Kingdom
Link Posted on May 17 2015 01:27 PM

Thanks again Bjorn, i got a great reverb sound now Big Grin Surfy Bear is amazing!

Played using Surfy Bear:
The Fountain

Last edited: May 17, 2015 13:30:09

Top Flag
sammy123
avatar
Joined: May 18, 2015
Posts: 4
MKE
Link Posted on May 18 2015 02:22 PM

Hi everyone. This us my first post here. I finished this over the weekend. Actually a while ago but the cabinet took forever. I have a vertically mounted MOD tank. I used Mogami shielded cable and it is very quiet. Although working with that wire is a pain compared to standard hookup wire. My cabinet is a bit sloppy as I am a terrible wood worker. Ill try and get a photo up later.

Anyway, thanks for sharing this project Björn. It sounds amazing.

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novamax
avatar
Joined: Jan 23, 2015
Posts: 105
Link Posted on May 18 2015 04:27 PM

Welcome Smile

Seems like this is the general Surfy Bear experience: Easy and fast to get working but too good to leave it without a proper dress. I used my Surfy Bear in a bare chassis basically for months before I dressed it up.

Have fun with it!

Top Flag
sammy123
avatar
Joined: May 18, 2015
Posts: 4
MKE
Link Posted on May 18 2015 09:03 PM

Here are a couple beauty shots. I really need a table saw and table router. Using a circular and hand held router is just too fiddly with this type of work.

image

image

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sammy123
avatar
Joined: May 18, 2015
Posts: 4
MKE
Link Posted on May 18 2015 09:18 PM

I never could get my bulb to work. I thought I had the resistor value calculated out, but could not get it to light at all. I had to stuff a 10mm clear led in it, which is eventually going to be a problem because it is not really connected properly. Anyway, eventually I'll fix that, add a bypass foot switch, and redo my back panel.

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cambeezy
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Joined: Jun 26, 2007
Posts: 399
Cleveland, Ohio
United States
2 Contributor Pins
Link Posted on May 18 2015 09:22 PM

sammy123 wrote:

Here are a couple beauty shots. I really need a table saw and table router. Using a circular and hand held router is just too fiddly with this type of work.

Looks great! Congrats.

A table saw is a plus but I've been rounding over with a clunky old hand-held router for 30+ years.

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sammy123
avatar
Joined: May 18, 2015
Posts: 4
MKE
Link Posted on May 19 2015 10:40 AM

Thank you.

It's actually not a handheld router. More of a cutout tool with a round over bit. It's a Dewalt.

cambeezy wrote:

sammy123 wrote:

Here are a couple beauty shots. I really need a table saw and table router. Using a circular and hand held router is just too fiddly with this type of work.

Looks great! Congrats.

A table saw is a plus but I've been rounding over with a clunky old hand-held router for 30+ years.

Last edited: May 19, 2015 10:41:08

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bjoish
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Joined: Jul 06, 2010
Posts: 596
Stockholm
Sweden
2 Download Pins 4 Contributor Pins
Link Posted on May 19 2015 02:16 PM

LinkJr wrote:

Thanks again Bjorn, i got a great reverb sound now Big Grin Surfy Bear is amazing!

Played using Surfy Bear:
The Fountain

Thanks LinkJr!
Sounds good Smile

Top Flag
bjoish
avatar
Joined: Jul 06, 2010
Posts: 596
Stockholm
Sweden
2 Download Pins 4 Contributor Pins
Link Posted on May 19 2015 02:18 PM

sammy123 wrote:

Here are a couple beauty shots. I really need a table saw and table router. Using a circular and hand held router is just too fiddly with this type of work.

Looks very good anyway!

Top Flag
Laservampire
avatar
Joined: Jun 03, 2015
Posts: 6
Australia
Link Posted on Jun 03 2015 11:31 PM

Hi Bjorn, finally got the first Surfy Bear in Australia up and running! It sounds fantastic!

So good in fact that I think I'll leave my toolbox kit as is and build another one to put in my tweed deluxe. That'll give me a justifiable reason to buy an Accutronics pan to compare to my Mod pan ;)

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bjoish
avatar
Joined: Jul 06, 2010
Posts: 596
Stockholm
Sweden
2 Download Pins 4 Contributor Pins
Link Posted on Jun 04 2015 03:38 PM

Laservampire wrote:

Hi Bjorn, finally got the first Surfy Bear in Australia up and running! It sounds fantastic!

So good in fact that I think I'll leave my toolbox kit as is and build another one to put in my tweed deluxe. That'll give me a justifiable reason to buy an Accutronics pan to compare to my Mod pan ;)

Hi Ben
Good news Smile
I am still amazed how this forum get surf guitar fans from all over the world together Cool

Top Flag
kbee
avatar
Joined: Oct 11, 2013
Posts: 5
Link Posted on Jun 06 2015 08:14 AM

I am finally close to having time to order and build a Surfy Bear.
I have a newbie question about shielding. So far I think that
the main idea is that the board itself should be in a metal box
to shield it from 'outside interference.' I would like to know
if the board and reverb tank need to be shielded from each other.

IOTW, can they be near each other in a metal box? (aluminum)

Thanks for any help & advice. This is going to be my first
build attempt.

Top Flag
JObeast
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Joined: Jul 24, 2012
Posts: 2762
Finknabad, Squinkistan
Turkmenistan
4 Calendar Pins 1 Security Pin 2 Map Pins
Link Posted on Jun 06 2015 09:56 AM

KB,
The metal tank that houses a reverb spring transducer unit is plenty shielding. I'm sure it was designed with that in mind: protecting springs and all from vibration and electromagnetic fields.

—

Squink Out!

Last edited: Jun 06, 2015 09:57:27

Top Flag
bjoish
avatar
Joined: Jul 06, 2010
Posts: 596
Stockholm
Sweden
2 Download Pins 4 Contributor Pins
Link Posted on Jun 06 2015 02:15 PM

JObeast wrote:

KB,
The metal tank that houses a reverb spring transducer unit is plenty shielding. I'm sure it was designed with that in mind: protecting springs and all from vibration and electromagnetic fields.

Yes, I in my latest build I used the pan to shield the circuit board below.
You might need to experiment to decide how much shielding you need.

image

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