Super Black Jack makes noises.. Can it be silenced?

[DarkTeckno]

It really makes it a joy to try and find help for your machine on this forum what with all the off topic drivel added to each thread. :sigh1:

[Sid]

The drivel shows that the board is alive and not just a dusty old encyclopedia.
Pachitalk wouldnt be such a fun , vibrant and alive place if the only thing you found was

To reset the machine after a bonus turn the key to the left.

Make sure there is a dongle plugged in.

No quarter / 10p

as for finding help for a machine success rate is very good. list your problem and within the first 5 posts etc you will have an answer. the Drivel starts after that....

even the sillier members tend to respect the fellow members when they list a problem...

Drivel no....

a thriving community of nuts/experts/lurkers etc yes..

just my 2 cents...

[logicprobe]

It really makes it a joy to try and find help for your machine on this forum what with all the off topic drivel added to each thread. :sigh1:

What? You missed the solution in the first reply?

[jweaver]

Are you talking about the 'search'? If so, I agree.. I already searched for SBJ and its noise and found one relevant post, where no-one came up with a solution and just decided to live with it.

As you say, there is so much extra added to each post that trying to find one which is relevant is almost impossible.

With regards to my problem, I have aquired some 47ohm resistors which I will add tonight.. Hopefully, it will surpress the noise and will allow me to turn the volume up to compensate for the change in volume that the resistors create.

I will post back with the results!

All the best

Jon

[jweaver]

I have installed some 47 ohm resistors and its done a really good job of surpressing the noise, but its still there.

However, it hasn't knocked teh volume back as far as I expected. Where as before, I could only run it on the lowest volume setting, now I can only get it up to +1 before its too loud.

This means that I could still add a bigger (Smaller) resistor to bring the volume down even further.

I am going to have a go at putting in something slightly higher.. Perhaps 30ohms and see what i happenes.. Ideally if I can get the volume down so much that +2 becomes 'normal' then I think that the 'whooshing' will be completely gone.

Jon

[jweaver]

Doh!! What was I thinking.. 30 ohms is LESS resistive than the 47s I have already installed.. So, this would make the volume louder again, not quieter.

I have aquired some 75, 110 and 180ohms, which I will try tonight.

Hopefully, one of these will do the trick.. I will let you know

Jon

[alstonj1]

next time dont be so narrow with your search try " volume control " a fix for one machine might work for your machine as well . also if a 47 worked for one position try 2 then 3 resistors and see if it works to your liking if so then buy a resistor in that range although 75 and 100 should do the trick .as for dribble thats what makes the site intresting ........

[jweaver]

I am lucky.. As an engineer, working for a large 'communications company', we have a workshop with every type of resistor possibile.. So I have borrowed a selection to try later.

I am thinking that since 47ohms was almost right, something around 100 should do the job..

I am going to try later and see if I can work out the best resistor size to use

Jon

[jweaver]

I went for a 180ohm in the end, which seems to be pretty much spot on.

No more 'whoosing' (or alteast its got rid of 99% of it).. And now I can play it at Vol 3 or 4 without coming away with my ears bleeding.

The only downside is that I have a feeling that I have lost some of the frequency responce (specifically the bass).. I may be wrong, but thats my gut feel.. But its fine and works well.

I think that if I was to recommend that somoene else do it, I would go for something like 120ohm, but it seems that anything between 100-200 will do the trick.

I hope this helps

Jon

[logicprobe]

Thanks for the value from your testing.

Or... you could just use a potentiometer.

[jweaver]

A pot would be good, but then you have to 'balance' all of the speakers and this is a pain (its like this on my King Camel)

By putting in 'fixed' resistors, ALL of the speakers have the same attenuation, and therefore you can use the inbuilt volume controls sucessfully.

I am actually very pleased with the mod.. Instead of having a volume control that goes from LOUD to OH MY GOD, MY EAR DRUMS HAVE BURST, I can now use it on level 1,2 3 or 4 without risking permenant hearing loss and/or brain damage!

If anyone else wants to do this and has any questions, just ask.

Cheers

Jon

[alstonj1]

the resistor value needed is a personal choice one persons to loud is another's could you turn it up a little ...... also different machines have different volumes so you might need a larger one but 47 ohm usually makes it very much bearable compared to un plug the speakers the neighbors complaining ......not to mention 47 ohm is carried by almost every supplier including radio shack .....

[jweaver]

I don't agree about it being personal choice, as you still have the machines inbuilt volume controls to fine tune the volume.

I think that everyone agrees that the volume of SBJ is too loud on anything other than setting 1.

By adding a 47 ohm resistor, setting 1+2 was usable, but the other settings were still too loud

After my experiments, I found that a 180ohm gave you the best spread.. It means that you can now have it dead quiet on setting 1, and still very loud at the top, but gives you a range of volumes using the INBUILT controls.

Obiously, if someone still wanted it louder than what you get at the top volume, then you could decrease the resistor, but I don't see why anyone would need it that loud.

Sure, if it were a machine which didn't have volume controls, then, yes.. A pot or the users choice of resistor would be needed.. But with the SBJ, adding the 180ohm resistor makes the volume control onboard usable.

I am not saying that 47ohm is wrong.. But I just didn't feel that it made that much difference.. With regards to 'supply' of anything other than a 47ohm.. I can't imagine that any store which carries a 47ohm, wouldn't have other sizes.. 180 ohms isn't a given.. ANYTHING around that size would do... I am simply saying that if you are going to add a 47ohm, you may as well go slightly higher and give yourself even more choice when it comes to volume!


Jon

[alstonj1]

your going to find that some machines will not work well with 180 ohm. The sbj is a super loud machine thats what i was saying its not the "norm" . besides your complaint was to get rid of the background noise any way and thats what you got .....its the cheapest method short of stuffing cotton balls in the speakers .......if you want perfection use stereo volume pots ( no need to balance the speakers that way ) or better yet fork over the extra $20 and gaku will add them for you .....

[jweaver]

But thats my point.. This solution wasn't for ANY machine.. Its for SBJ..

I fully accept that other machines need different mods, but my point here was to give my results to adding resistors to SBJ to:

1. Dampen the whoosing noise
2. To make the whole thing quieter..

It goes without saying that if someone wants to make a DIFFERENT machine quieter, they shouldn't automatically go for a 180ohm resistor!

Jon

[jweaver]

Jeff.. I know your views on this as you have told me many times.. But as I said, I did search and found lots of posts ABOUT the noise problem, but nothing about the solution.

I have created a post with a descriptive title and rather than just take the info and run, I decided to update it with what I did, so that others may find it (As a result of a search) in the future.

Whats so wrong with that.. I have added a lot of good info and if it repeats what others have said, so what? I am not taking credit for other people suggestions, I am just confirming that it worked for me and that I have made slight changes to the original suggestion.

Please stop being so negative towards me.. This isn't the first time that you have posted this comment in my threads.. What does suprise me is that you often post twice.. One giving info and then a few posts later, one saying that I should have searched

Why is it that there is always people like this on EVERY forum.. I personally dont' have a problem with re-cycling old information by re-posting old info. Imagine this scenario, since the last time this was discussed, many others have bought SBJ and noticed the sound, but where 'afraid' to ask.. Then, someone like me brings it up and a whole bunch of new people benifit from this info..

Is this so wrong??

I am sorry if my posts cause you offence, but its in my nature to learn by asking questions!

Jon

[Sid]

Peace Dudes......

[Chris]

Peace Dudes......

Me was thinking exactly along the same lines as you Sid. But it does make me chuckle how people get so easily wound up

[Sid]

well.... all kidding aside..

we should all be vigilant with our fellow members posts.

Although text is a great way to communicate it sometimes does not convey the emotion/feeling well, someone may write something with good intention the test may not convey that feeling though.

we're all here to have fun...

btw After school 3 oclock in the Parking lot... :boxing:

[luckydog]

Now kids, play nice or

"No Pachitalk for you"