• TalkBass has been independent since 1998. Add your voice.
    Create a free account to reply to discussions, view embedded media, and browse with fewer display ads.
    Join freeLog in
    Want zero display ads or expanded classifieds tools? Compare plans.

YAMAHA TRB CLUB

Hello, Guys , I am new here and actually I am not bass player but studio owner :) Please help me get more info about this TRB-5 bass. What exact TRB-5 model it is? I know that TRB-5 have many different modifications, but by serial number I didn't find any detailed info. What value by sound and price this can be? It was only studio bass for last 14 years. I got some instruments by some exchange deal and now looking more deeply for this. Thanks in advance! :)
IMG_6133_Fotor.jpg
IMG_6135_Fotor.jpg
IMG_6137_Fotor.jpg
IMG_6138_Fotor.jpg
IMG_6141_Fotor.jpg
 
  • Like
Reactions: BrentSimons
Hello, Guys , I am new here and actually I am not bass player but studio owner :) Please help me get more info about this TRB-5 bass. What exact TRB-5 model it is? I know that TRB-5 have many different modifications, but by serial number I didn't find any detailed info. What value by sound and price this can be? It was only studio bass for last 14 years. I got some instruments by some exchange deal and now looking more deeply for this. Thanks in advance! :)

I have one of these, in blue, and it is one of my favorites. This is an earlier TRB-5, manufactured 1989 through 1998. The "slap cut" on the lower bout is only on this version of the TRB-5. The scale is 34". Controls are volume, blend, bass, treble, and a 3-way midrange selector that is adjusted with thumbwheels on the preamp board inside the control cavity. The pickups look like humbuckers, but are hum-cancelling single coils, that are designed to work as a system with the factory preamp. I believe the first ones had a P/J pickups, but the same preamp.

This one appears to be in original condition, and very nice; played but not abused.
 
I have one of these, in blue, and it is one of my favorites. This is an earlier TRB-5, manufactured 1989 through 1998. The "slap cut" on the lower bout is only on this version of the TRB-5. The scale is 34". Controls are volume, blend, bass, treble, and a 3-way midrange selector that is adjusted with thumbwheels on the preamp board inside the control cavity. The pickups look like humbuckers, but are hum-cancelling single coils, that are designed to work as a system with the factory preamp. I believe the first ones had a P/J pickups, but the same preamp.

This one appears to be in original condition, and very nice; played but not abused.

Well said! Gen 1 Yamaha TRB 5. Great basses.
 
  • Like
Reactions: FactorySounds
I have one of these, in blue, and it is one of my favorites. This is an earlier TRB-5, manufactured 1989 through 1998. The "slap cut" on the lower bout is only on this version of the TRB-5. The scale is 34". Controls are volume, blend, bass, treble, and a 3-way midrange selector that is adjusted with thumbwheels on the preamp board inside the control cavity. The pickups look like humbuckers, but are hum-cancelling single coils, that are designed to work as a system with the factory preamp. I believe the first ones had a P/J pickups, but the same preamp.

This one appears to be in original condition, and very nice; played but not abused.
Thank You for so detailed and explained info. Very useful! Just small question , what means " Slap cut on lower bout" ...? :)
 
I've just picked up a TRB 1005and have a question about the pickups and preamp swap. The stock preamp is just okay sounding to my ears. It's very bright, even with the treble rolled all the way back. I'm thinking about installing my audere in it, but I am unsure about the dummy coil. Should I hook it up to ground, or just completely delete it from the circuit?
 
I've just picked up a TRB 1005and have a question about the pickups and preamp swap. The stock preamp is just okay sounding to my ears. It's very bright, even with the treble rolled all the way back. I'm thinking about installing my audere in it, but I am unsure about the dummy coil. Should I hook it up to ground, or just completely delete it from the circuit?
I checked the TRB1004 preamp circuit and the part just after the PUs is identical to TRBxIIs (I have considered changing the preamp on mine). That is to say the signal from both coils is amplified then connected through a trimpot that fine balances the coil and phantom coil. Previous posts on TB say that to install a third party preamp you need to replicate this buffer stage. I’ve asked john east recently with no answer yet. Be aware that if you don’t use the phantom coil (just leave the wire unconnected) noise won’t cancel in between PUs as regular JB PUs do but may add up. I’d try to use the two coils in parallel that is plug both in the PU in. In any case you should ask Audere. If someone succeeds in replacing the preamp while keeping the PUs i’m interested.
 
  • Like
Reactions: Barcza
I checked the TRB1004 preamp circuit and the part just after the PUs is identical to TRBxIIs (I have considered changing the preamp on mine). That is to say the signal from both coils is amplified then connected through a trimpot that fine balances the coil and phantom coil. Previous posts on TB say that to install a third party preamp you need to replicate this buffer stage. I’ve asked john east recently with no answer yet. Be aware that if you don’t use the phantom coil (just leave the wire unconnected) noise won’t cancel in between PUs as regular JB PUs do but may add up. I’d try to use the two coils in parallel that is plug both in the PU in. In any case you should ask Audere. If someone succeeds in replacing the preamp while keeping the PUs i’m interested.

What do you think, is possible to install an additional, passive tone control before or after the buffer stage?
 
What do you think, is possible to install an additional, passive tone control before or after the buffer stage?
The buffer is active so it pretty much defeats the passive tone control purpose. What you can do is plug hot wire and ground of a PU (disconnected from preamp) to an amp and see what comes out. You may also try to connect the phantom coil. If you are happy with the result it is certainly possible to add a switch and a tone control to make the bass passive.
 
  • Like
Reactions: Barcza
I checked the TRB1004 preamp circuit and the part just after the PUs is identical to TRBxIIs (I have considered changing the preamp on mine). That is to say the signal from both coils is amplified then connected through a trimpot that fine balances the coil and phantom coil. Previous posts on TB say that to install a third party preamp you need to replicate this buffer stage. I’ve asked john east recently with no answer yet. Be aware that if you don’t use the phantom coil (just leave the wire unconnected) noise won’t cancel in between PUs as regular JB PUs do but may add up. I’d try to use the two coils in parallel that is plug both in the PU in. In any case you should ask Audere. If someone succeeds in replacing the preamp while keeping the PUs i’m interested.

I have read some posts of people saying that about the buffer circuit. But, a lot of posts say they've changed preamp and say nothing of the buffer. Maybe those people swapped pickups as well. I am unsure. Do you know of any buffer circuit designs/diagrams that are available for use?
I did contact audere, and received a reply today, which I will post here for future reference if someone needs the info.

Screenshot_20190204-180349.png
 
These pickups work like Alembic Series II pickups, they expect to be run with the phantom coil into the preamp so their levels can be set. You can even sit the bass in an "RF loop of shame" to get the right settings for the phantom coil levels, exactly like Alembic pickups.

If there was demand, I'm sure a pre-amp maker would replicate the cancelation circuit, but there aren't many people out there interested in swapping the pickups.

You're basically stuck running these as single-coils. The most successful mods I've seen have swapped out the pickups with Bartolinis that left 1/8 of a gap on each side of each pickup in the cavities.

Have you tried flipping the pickups upside-down? Doing that changes the position of the "seeing" coil and does actually change the sound. You might like it if you can stand seeing the Yamaha logos upside down.
 
Have you tried flipping the pickups upside-down? Doing that changes the position of the "seeing" coil and does actually change the sound. You might like it if you can stand seeing the Yamaha logos upside down.

I have not tried that, but I will now. It never crossed my mind, honestly. I'm guessing this has been done before, and that there is enough wire to do this? I did put on different strings today and it helped with the brightness quite a bit. I really want the adjustable mid frequency the most. I use that quite often. I'm still undecided if I will swap the preamp as I haven't yet tried it out with the band. But, if I decide to, it will be this weekend. I may just go with single coil and shielding.
 
Yes, there is enough wire to flip the pickups around. Just be careful when you screw the pickups back down that the wires are well out of the way.

One other issue is that the pickups are both wound in the same direction, so you can't rely on a blend pot or both pickups being up full to hum cancel between them.

Definitely try the flip first. You might like it, and that might be all you feel you need to do. Let us know what you think.

I have not tried that, but I will now. It never crossed my mind, honestly. I'm guessing this has been done before, and that there is enough wire to do this? I did put on different strings today and it helped with the brightness quite a bit. I really want the adjustable mid frequency the most. I use that quite often. I'm still undecided if I will swap the preamp as I haven't yet tried it out with the band. But, if I decide to, it will be this weekend. I may just go with single coil and shielding.
 
  • Like
Reactions: jchrisk1
I have read some posts of people saying that about the buffer circuit. But, a lot of posts say they've changed preamp and say nothing of the buffer. Maybe those people swapped pickups as well. I am unsure. Do you know of any buffer circuit designs/diagrams that are available for use?
I did contact audere, and received a reply today, which I will post here for future reference if someone needs the info.
Thanks a lot, I didn't realize the phantom coil isn't inverted.
 
I have read some posts of people saying that about the buffer circuit. But, a lot of posts say they've changed preamp and say nothing of the buffer. Maybe those people swapped pickups as well. I am unsure. Do you know of any buffer circuit designs/diagrams that are available for use?
I did contact audere, and received a reply today, which I will post here for future reference if someone needs the info.

View attachment 3310591
I did check TRB and TRBIIs circuit diagrams. It is clear from the diagram that TRB pickup phantom coil is not inverted. However the buffer is not at all the same in TRBIIs and phantom coils are indeed inverted. The signal coming from both coils in TRBIIs and subsequent TRB100x is added with no electronic invertion as far as I understand the diagram. I may be wrong though, it would be worth asking Audere again stating this difference. I can provide diagrams if needed.
Concerning putting pickups upside down, bridge and neck pickup have a different part number. It may be that signal coil on the bridge PU is toward the bridge whereas the coil on the neck pickup is toward the neck. Reverting pickups will limit the pickup pan range. I wonder if we could locate the signal coils tapping with a screwdriver ?
 

Latest posts