(Topic ID: 174124)

Xenon club...Members Only~Try Xeeeenon

By Yesh23

5 years ago


Topic Heartbeat

Topic Stats

  • 1,367 posts
  • 146 Pinsiders participating
  • Latest reply 3 days ago by Quench
  • Topic is favorited by 63 Pinsiders

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There are 1,367 posts in this topic. You are on page 28 of 28.
#1351 4 days ago
Quoted from Quench:

Post some clear sound/vocalizer board pics, front and back.

Sounds Plus has new axial caps
New pots
New amp
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Vocal has new axial caps
New regulator
1A406FDA-C335-4CBC-A32F-99562F15EA6D (resized).jpeg
I even went with the recommended 220uf on the vocal board for C25 per GPE
C9374E7E-10FC-48E7-B011-6B64B7F5591E (resized).jpeg

#1352 4 days ago
Quoted from mrm_4:

Sounds Plus has new axial caps

Nothing immediately stands out. I might take a closer look again later.

In your restoration thread, you originally had two 8 ohm speakers wired in parallel.
What's the ohms rating on the two replacement speakers? Are they both working (do you feel the cone move in both)?

#1353 4 days ago
Quoted from Quench:

Nothing immediately stands out. I might take a closer look again later.
In your restoration thread, you originally had two 8 ohm speakers wired in parallel.
What's the ohms rating on the two replacement speakers? Are they both working (do you feel the cone move in both)?

The new are also 8 ohm. I took them out and put the originals back because I thought the low volume was because I had bad replacement speakers. Got everything switched back over to the old dirty originals and the sound was still low. So I started the fun with the sound boards.
Thanks for taking some time to look it over and think through fixes.

#1354 4 days ago
Quoted from Quench:

In your restoration thread, you originally had two 8 ohm speakers wired in parallel.

They’re actually wired in series (positive to negative) would switching to parallel (positive to positive) change the resistance to 4 ohm?

#1355 4 days ago
Quoted from mrm_4:

They’re actually wired in series (positive to negative) would switching to parallel (positive to positive) change the resistance to 4 ohm?

They were wired in parallel not series. You need to connect positive to positive and negative to negative.
If you have them wired positive to negative, they are cancelling each other out. - i.e. as one cone goes down, the other cone is going up. Both cones need to be moving in the same direction.

#1356 4 days ago
Quoted from Quench:

They were wired in parallel not series. You need to connect positive to positive and negative to negative.
If you have them wired positive to negative, they are cancelling each other out. - i.e. as one cone goes down, the other cone is going up. Both cones need to be moving in the same direction.

https://pinside.com/pinball/forum/topic/thruster-i-just-met-her-xenon-restoration-/page/7#post-6246193

This shows how they were prior to me taking them out. Showing them in series so that’s how I put them back. Circled the + markings
1DEE9154-9709-4334-8B9F-A81E70017879 (resized).jpeg
But here’s the thing, I remember that the speaker on the left didn’t have sound. I pushed on the tabs and it would cut in and out. Before putting them back in after this low volume dilemma I resoldered the leads on the underside of the tab and got it working then put them back and soldered them in.
I bet when the speaker was cut out originally the sound was louder and now that I fixed the speaker and have them wired in series I’m losing my sound. I understand you lose power with ohms law when running speakers in series but it really didn’t cross my mind because I was putting things back to how they were before I did the tear down. This game was so hacked up everywhere else, why would I trust what was going on prior to breaking it down???
I’m going to switch the jumper wires tomorrow and report back!

#1357 4 days ago
Quoted from mrm_4:

This shows how they were prior to me taking them out. Showing them in series so that’s how I put them back. Circled the + markings

Mmm, nope. They're wired in parallel. Both wires from the sound board are hooked up to one speaker, then two short wires connect the second speaker across it. The fact these two short wires are incorrectly crossed over doesn't make it serial.

BTW also try your old speakers just incase the replacements have poor performance.

Speaker_45.png

#1358 4 days ago
Quoted from Quench:

BTW also try your old speakers just incase the replacements have poor performance.
[quoted image]

Quoted from mrm_4:

The new are also 8 ohm. I took them out and put the originals back because I thought the low volume was because I had bad replacement speakers. Got everything switched back over to the old dirty originals and the sound was still low. So I started the fun with the sound boards.
Thanks for taking some time to look it over and think through fixes.

The originals are in there

#1359 4 days ago

I feel terrible spamming this thread with my sound issue, should’ve started I separate one.

Something more universal for Xenon, here’s the topper from CPR in case anyone is interested in getting one.

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#1360 4 days ago
Quoted from mrm_4:

The originals are in there

They need to be in series to be correct. I have a Flash Gordon I restored and an original Xenon and they are wired in series.

#1361 4 days ago
Quoted from gdonovan:

They need to be in series to be correct. I have a Flash Gordon I restored and an original Xenon and they are wired in series.

Well for what it’s worth this is how it looked this morning
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Now it looks like this
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When I swap the wires on the right speaker I gained more low end than anything. Game is noticeably boomy-er.

I looked through about 50 archived xenon adds trying to find a picture of someone else’s wiring and timab2000 sold a game a while back that had the clearest shot and this is how his was wired.

#1362 3 days ago
Quoted from mrm_4:

Well for what it’s worth this is how it looked this morning
[quoted image]
Now it looks like this
[quoted image]
When I swap the wires on the right speaker I gained more low end than anything. Game is noticeably boomy-er.
I looked through about 50 archived xenon adds trying to find a picture of someone else’s wiring and timab2000 sold a game a while back that had the clearest shot and this is how his was wired.

Still wired wrong.

#1363 3 days ago

Here’s mine

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#1364 3 days ago
Quoted from gdonovan:

They need to be in series to be correct.

I wouldn't wire those 8 ohm speakers in series. Speakers electrical impedance characteristics are not flat line and changes over the frequency spectrum meaning you're affecting the current levels through each speaker when in series. This will degrade their audio range.
Wire those 8 ohm speakers in parallel so they get audio voltage/current swings as intended from the amplifier.

#1365 3 days ago
Quoted from Quench:

I wouldn't wire those 8 ohm speakers in series. Speakers electrical impedance characteristics are not flat line and changes over the frequency spectrum meaning you're affecting the current levels through each speaker when in series. This will degrade their audio range.
Wire those 8 ohm speakers in parallel so they get audio voltage/current swings as intended from the amplifier.

Did not catch they were 8 ohm, factory was 4 ohm in series.

My apologies, posting when tired not recommended.

Flash Gordon had two 8 ohm in parallel.

#1366 3 days ago

This is a project game that I never powered up but the soldering looks original. Orange to pos and white to neg on both speakers

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#1367 3 days ago
Quoted from Lovef2k:

This is a project game that I never powered up but the soldering looks original. Orange to pos and white to neg on both speakers

Two examples here of Bally soldering the orange Ground wire to the positive lug of the speakers, I find it amusing

Quoted from gdonovan:

Did not catch they were 8 ohm, factory was 4 ohm in series.

If your two factory speakers were 4 ohms, I'm not surprised Bally took the safer route wiring them in series to save stressing the amplifier at the cost of audio range.

There are 1,367 posts in this topic. You are on page 28 of 28.

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