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The Acoustic Club

#3,021
Am I the only one with a B-15 MKII?

I'm already a member. I'm #355. I have
had some Acoustic amps over the years
and still do.

My newest addition is the B-15 MKII cab.
I use it with a Fender M-80 1X12 cab and
a Fender Rumble 350 amp. I don't need
that much, but I just have missed the
sound of 15 plus 12. GC put it on sale
cheap, so it's mine. Glad I don't have to
move the 80 pound monster much.

3-3-1.jpg


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It sounds really good to my ears. It don't
hiss like the B-15 does. The tweeter don't
bother me either.

If you had to move this thing a lot, it may
not hold up real well. The tolex seems thin
and you know how pressed wood does. It
does have a plywood front though. I put
casters on it from Lowes.

Tabdog
 
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#3,022
sanderic said:
I played with my 17 piece swing band last night, opening for the circus, at UNO Lakefront Arena in New Orleans, a 10,000 seat hall. Of course they only were using about four overhead mics for the band, so I took out the old 371. Unbelievable the massive, full, deep, rich sound that monster puts out. The guys running sound actually ask me to turn down at one point. I was using my American Standard Precision with Chromes. For tonight's performance, I'm debating on whether to take my American Standard Jazz, my Kramer DMZ5000, Rickenbacker 4001, or just take the P again, it sounded so good.
For lovers of the old 370, I truly hope you folks, one day, get the opportunity to play in a large venue with one of these amps. That's where they come into their glory.
Click to expand...


Everyone needs to read this and then READ IT AGAIN. I'm sorry but watts arn't just watts. Old watts ARE stronger/bigger/better than new watts. LOL!
Plugging an old Acoustic head into the cab it was designed for will open anyones eyes who may think music is best created in the pages of a textbook.
 
#3,026
bottomend! said:
Everyone needs to read this and then READ IT AGAIN. I'm sorry but watts arn't just watts. Old watts ARE stronger/bigger/better than new watts. LOL!
Plugging an old Acoustic head into the cab it was designed for will open anyones eyes who may think music is best created in the pages of a textbook.
Click to expand...

Just my .02 worth here, back in the 70s, 100 watt amps were the norm for bass amps, speakers were rated at around 100 watts. Today the norm seems to be 350 watt amps and speaker cabs are rated at 400 watts, yet these new amps don't seem any louder to me. Are modern speakers just less efficient? Could this be why a lot of older players say older watts are louder?
 
#3,027
I went out and bought an Acoustic B100 RIGHT before they apperently decided to start selling them with switchable overdrive.

Not really mad though, only paid about $150-$175 for it and I love the tones I can get out of it.

I can get anywheres from a somewhat Beatles tone to a Greenday tone and all in between.
Only problem I have with it is if your carrying it by yourself its a little heavy.
But then again most bass amps aren't. xD
 
#3,030
Hey,

Used my 360361 last night (blues band)... what a great rig. I had it all tuned up in the last year and it's just perfect! What a vib this thing produces! You know the 18 does cut thru nice w/solid mids! Just love this thing!

All the best!

Bump to Nicktej22 - cool!:hyper:
 
#3,031
Hey there,

Used my 360-361 last night (Blues band gig)! I had it tuned up a few weeks back, completely gone thru and it's 100%... I just love this thing, the 18 does rock the mids nicely! Nothing like this thing! :hyper:

bump to Nicktej22 - very cool!
 

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#3,032
Already a member here :) Ok just purchased another old acoustic control corp amp!!! Picked up what I had thought was a bass amp but in reality is a guitar amp. However upon further research found out most acoustic amp heads will work with either bass or guitar. This is the 230 model, differing from the bass version because of the reverb and bright switch? I hooked it up to my acoustic 410 (GC version) cab and played my Geddy Lee jazz thru it. Really sounds great and is LOUD!!! Sorry I can not take a pic right now because my cell phone is broke and I got an old crappy one. As soon as i can borrow a digital camera or get my replacment i will upload a pic.

I have one question though. Has any one of heard of the company "black label switches"? My amp did not come with the pedal so the reverb is always on, not a major issue as i just turned the knob all the way down. However i found that they make a pedal for this amp. Just curious if it is worth taking a risk of ordering? here is the link:

Link Removed
 
#3,033
I use one of those black label foot switches with my 360 preamp. It works just fine and seems like its a good solid pedal. Have you tried turning the knob all the way down untill it clicks off? The fuzz on my 360 will click off when I turn the knob past the stop point. I don't need the foot switch to make the amp clean
 
#3,034
bassguitarthund said:
Already a member here :) Ok just purchased another old acoustic control corp amp!!! Picked up what I had thought was a bass amp but in reality is a guitar amp. However upon further research found out most acoustic amp heads will work with either bass or guitar. This is the 230 model, differing from the bass version because of the reverb and bright switch? I hooked it up to my acoustic 410 (GC version) cab and played my Geddy Lee jazz thru it. Really sounds great and is LOUD!!! Sorry I can not take a pic right now because my cell phone is broke and I got an old crappy one. As soon as i can borrow a digital camera or get my replacment i will upload a pic.

I have one question though. Has any one of heard of the company "black label switches"? My amp did not come with the pedal so the reverb is always on, not a major issue as i just turned the knob all the way down. However i found that they make a pedal for this amp. Just curious if it is worth taking a risk of ordering? here is the link:

Link Removed
Click to expand...

I wouldn't recommend this company. I ordered a 330 fs from them. Its been 2 months. Never received it. I actually contacted PayPal to file a claim. Just received my money back a few days ago.
 
#3,037
Jazz_bass2664 said:
I use one of those black label foot switches with my 360 preamp. It works just fine and seems like its a good solid pedal. Have you tried turning the knob all the way down untill it clicks off? The fuzz on my 360 will click off when I turn the knob past the stop point. I don't need the foot switch to make the amp clean
Click to expand...

Yeah i did turn it all the way down and it sounds clean. Just the light is on for that mode. I guess it is not a necessity, just would like to be able to turn it on and off, lol
 
#3,038
sanderic said:
Just my .02 worth here, back in the 70s, 100 watt amps were the norm for bass amps, speakers were rated at around 100 watts. Today the norm seems to be 350 watt amps and speaker cabs are rated at 400 watts, yet these new amps don't seem any louder to me. Are modern speakers just less efficient? Could this be why a lot of older players say older watts are louder?
Click to expand...

Nope... you have to realize the relationship (physics) of watts and decibels. Without going through too much theory, just understand that it is a logarithmic relationship.

That is to say, to double the loudness (decibels) you have to increase the wattage by a factor of 10!

So if your 10 watt amp gives you 25 decibels, you'd have to go up to 100 watts to get 50 decibels, and 1000 watts (!) to get 100 decibels.

So, in your example, assuming the physical variables between an old and new amp are pretty minimal (which from a physics standpoint, they are relatively close), a jump from 100 watts to 350 watts (over 3 times as much power) only puts out about 30% more decibels.

Couple that with the knowledge that "loudness" is also partially a perception-thing dealing with pitch, tone, individual ear and brain functions, etc., the perception of "loudness" can vary from person to person.

Okay, physics class dismissed!
:bassist:
 
#3,039
Actually the formula is dB=10*log(power2/power1) and an increase of 10 in power is an increase of 10 in dB. If you increase your power from 100 to 350 it is 5.44dB of an increase.
So if you have 25dB at 10 watts, at 100 watts it would be 35dB and at 1000 watts you get 45 dB (to get to 50dB you would need 3160 watts)

All things being equal of course, and there is always the compression that kicks in as you increase the power and the voicecoil heats up.

But those old tube amps didn't "run out of gas" like modern SS amps so you can get a better peak to average ratio which means LOUDNESS
 
#3,040
Bowe said:
Actually the formula is dB=10*log(power2/power1) and an increase of 10 in power is an increase of 10 in dB. If you increase your power from 100 to 350 it is 5.44dB of an increase.
So if you have 25dB at 10 watts, at 100 watts it would be 35dB and at 1000 watts you get 45 dB (to get to 50dB you would need 3160 watts)
Click to expand...

My apologies... Yes, Bowe, you are absolutely correct... an increase of 10 times the power is needed to bring up the decibels by 10 (as you said, 10 watts to 100 watts brings it from 25 db to 35 db, etc.).

I had the decibels as being doubled every 10x increase in power (WRONG!).
 

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