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 Post subject: SP-404SX additional headphone jack mod #1= SUCCESS!
PostPosted: Wed Jul 03, 2013 9:39 am 
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I wanted a headphone jack at the top of the unit so I could use it in my lap without damaging the orig headphone jack or my groin- hah. I thought about having 2 additional jacks (1/4" and an 1/8") but for now just went with 1/8' for starters. Basic idea is daisy chain as many jacks as you want but only use one at a time so as not to strain or damage the circuitry. This turned out better than expected! Special thanks to my friends at madbeanpedals.com forums for helping me (because i don't know shit about electricity basically ;)
Madbean thread: http://www.madbeanpedals.com/forum/index.php?topic=10416.0

pics of full process with captions in the link below:
https://plus.google.com/photos/10526638 ... q6H_LX5ogE

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Also check the mic mod I did after this:
viewtopic.php?f=3&t=16227&hilit=mic+mod

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SP-202, SP-404SX (main one I use), SP-505, SP-555, ES-1, ESX-1, RS7000, etc.


Last edited by Om_Audio on Mon Aug 26, 2013 9:22 am, edited 3 times in total.

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 Post subject: Re: SP-404SX additional headphone jack mod #1= SUCCESS!
PostPosted: Wed Jul 03, 2013 1:35 pm 
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really cool. i've opened some intrument to modifie or circuit bend but never really tought about opening the 404sx!

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 Post subject: Re: SP-404SX additional headphone jack mod #1= SUCCESS!
PostPosted: Thu Jul 04, 2013 1:01 am 
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Thanks man, I am loving it!

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SP-202, SP-404SX (main one I use), SP-505, SP-555, ES-1, ESX-1, RS7000, etc.


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 Post subject: Re: SP-404SX additional headphone jack mod #1= SUCCESS!
PostPosted: Thu Jul 04, 2013 3:16 am 
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Great mod! Happy to see the voltmeter out, that wire job looks super nice. Have you tried both headphones out at the same time? I'm picturing a small jam session with someone on an ext in instrument.


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 Post subject: Re: SP-404SX additional headphone jack mod #1= SUCCESS!
PostPosted: Thu Jul 04, 2013 3:16 am 
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Double posted by accident, but I had another question anyways. Do you think this would work on the input jack as well? An SP with more in/outs sounds very attractive.


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 Post subject: Re: SP-404SX additional headphone jack mod #1= SUCCESS!
PostPosted: Thu Jul 04, 2013 3:26 am 
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Thanks!

No, I was advised that using both at the same time could load the amp and possibly damage something. It prob could be done with a small add on PCB with another amp and some components.

as for inputs, maybe same story- get some advice from people who understand this sort of thing better before attempting- I have seen people do amazing things. Check out DIY forums like I did over at madbean.

EDIT: I might look into this at a later date including the multi input idea- this could be interesting. More likely is I will just add a 1/4" jack first in serial off the new 1/8" jack so I can use whatever headphones I want from the rear panel. I will post back here either way!

O

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SP-202, SP-404SX (main one I use), SP-505, SP-555, ES-1, ESX-1, RS7000, etc.


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 Post subject: Re: SP-404SX additional headphone jack mod #1= SUCCESS!
PostPosted: Tue Jul 09, 2013 5:30 am 
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404 Hacker Elite

*BOWS*

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 Post subject: Re: SP-404SX additional headphone jack mod #1= SUCCESS!
PostPosted: Tue Jul 09, 2013 5:52 am 
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hseiken wrote:
404 Hacker Elite

*BOWS*


:)

Sat on the beach today for hours with it in my lap- I get a warm fuzzy feeling every time I plug my headphones into the top.

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SP-202, SP-404SX (main one I use), SP-505, SP-555, ES-1, ESX-1, RS7000, etc.


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 Post subject: Re: SP-404SX additional headphone jack mod #1= SUCCESS!
PostPosted: Tue Jul 09, 2013 8:08 am 
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This is great! I always hated the positioning of the headphone socket cuz like you said, it gets beat up against you.

Nice one man!

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