Thunderbird Club

[JJR58]

Tubes? No tubes?
If you guys (figuratively speaking of course) can’t make up your mind maybe this will help…
View attachment 4663648
A 1980ish MusicMan Hybrid HD150 bass amp with tubes in the power section where they belong!

 

[JJR58]

I have an old Marantz, 2385, the thing blows the doors open. Not mine but in the same shape, 240 WRMS/channel continous into 4 ohms. I use two pairs of large Advents with it, Grand Funk IS in the house when I play them.

Also a top of the heap choice for me.
They were some of the best imho.
And depending on the model...... Tons of power.

 

[Stealth57]

may very well be, if you have a voltmeter could you measure DC at the output? i live locally if you want it looked at, very familiar with those. PM if you’d like.

Not sure if this is what you meant, but here are a couple pictures. I tested the Sunn head with the Ampeg 210 cabinet and it has hum too. So, the source is the amp but what I don't know is if it is a lack of filtering on a dirty power line or an issue with the amp.

 

[JJR58]

Is it VP Tuesday again?

It is now!!!!

 

[Stealth57]

very slowly turn this guy with a speaker connected and it should go away….assuming of course it’s not some environmental issue at your place….
View attachment 4663674

I'm a glorified plumber (Chemical Engineer). Speak slowly and in English

Apologies to plumbers. At least they can fix a leak.

 

[Stealth57]

Tubeless Tuesday with my new toy.

 

[JJR58]

Hey @bobyoung53 and @Chucky Stiletti, you think that fat Marantz would power these?

 

[Chucky Stiletti]

Hey @bobyoung53 and @Chucky Stiletti, you think that fat Marantz would power these?

View attachment 4663741

gloriously…

 

[lbanks]

I remember when we lusted for these...
Link Removed
... a long time ago.

 

[bobyoung53]

Hey @bobyoung53 and @Chucky Stiletti, you think that fat Marantz would power these?

View attachment 4663741

Not sure if those are the same model but they used to be popular as PA speakers during the early 70's. I think they made them for both home use and theatre use. They're actually pretty efficient and are loud without a lot of power, the Marantz would probably be too much, a nice McIntosh tube amp would sound great with those. They made an Altec tube amp for those too for theatres.

 

[JJR58]

Not sure if those are the same model but they used to be popular as PA speakers during the early 70's. I think they made them for both home use and theatre use. They're actually pretty efficient and are loud without a lot of power, the Marantz would probably be too much, a nice McIntosh tube amp would sound great with those. They made an Altec tube amp for those too for theatres.

I know those particular ones quite well.
One band i was in had their own PA, some of which consisted of those very A7's.

 

[Chucky Stiletti]

I went to Rance Electronics in Berkeley, CA. I was there with Lance (don't ask about Lance vs Rance) plugged it in, scoped the output, plugged in one of his cabinets, and then plugged in a bass. No hum all around.

https://www.ranceelectronics.com/about

how much did he charge you?..

 

[Stealth57]

how much did he charge you?..

Zippo, nada, nothing. He couldn't find anything and said no charge. Really nice guy if you don't mind waiting a month or more for an appointment.

 

[Stealth57]

Going to try a Furman power conditioner and see if it makes a difference on the hum. Not very expensive, highly rated, and free returns.

 

[GBassNorth]

enough boring techie stuff…..yawn…
RS66 on the Greco into an Ashdown rig at the surfer bar…

Some great left and right hand work there Chuck!
I’d be hard pressed to hit all those notes on a good day. As my arthritis gets worse those good days are getting farther and farther behind me. Nice playing, keep posting!

 

[Chucky Stiletti]

Some great left and right hand work there Chuck!
I’d be hard pressed to hit all those notes on a good day. As my arthritis gets worse those good days are getting farther and farther behind me. Nice playing, keep posting!

thx G!

 

[Engle]

Going to try a Furman power conditioner and see if it makes a difference on the hum. Not very expensive, highly rated, and free returns.

It’s not a bad idea to have at least one, even if it doesn’t fix this specific issue.
My LED stage lights create a lot of noise, which gets into the PA if that stuff is plugged into the same circuit. It’s nasty, especially if I dim the lights. I use these on the PA gear and that has solved the problem.
6 Outlet, 2x3 Metal Chassis Surge Suppressor Strip | Furman Power

 

[Stealth57]

It’s not a bad idea to have at least one, even if it doesn’t fix this specific issue.
My LED stage lights create a lot of noise, which gets into the PA if that stuff is plugged into the same circuit. It’s nasty, especially if I dim the lights. I use these on the PA gear and that has solved the problem.
6 Outlet, 2x3 Metal Chassis Surge Suppressor Strip | Furman Power

Same one I ordered. $31.

 

[Miles_ONeal]

Just in case you missed it. 8^)

[Invalid or Expired Link Removed]

 

[Miles_ONeal]

I presume they are TB plus. When I did the review a spec sheet had not been distributed to dealers so I avoided such details. I presume construction is mahogany but again if I wasn't completely sure I avoided it because I didn't want to post conflicting information.

Web site calls them "Rhythm T-Bird" and "Lead T-Bird". Good old Gibson marketing terminology...