Bassman 250 4 ohm min ?

[mountnmonty]

I have a Fender Bassman 250 and I want to add a separate subwoofer speaker cabinate to the rear speaker out which has 2 jacks. the internal cabinate uses 1 and the other is unused. can I run a 8 ohm external speaker cabinate in addition to the 4 ohm internal cabinate? the jacks are marked 4 ohm min.

please advise

Tommy

 

[billfitzmaurice]

speaker cabinate in addition to the 4 ohm internal cabinate? the jacks are marked 4 ohm min.

please advise

Tommy

Possibly, but you'd better download a manual to be sure. Usually the load minimum refers to that of all the drivers/cabs being used, but labeling a combo that way it's not clear whether the internal speaker counts as part of the load or not.

 

[Beefbass]

The Bassman 250/210 puts the full 250 watts into the internal speakers. If you want to use different speakers, you have to unplug the internal one's first.

 

[mountnmonty]

and why are there 2 output jacks on the back if it can only handel the internal cabinate?

 

[mokkat]

because you could unplug the internal 4ohm speaker and connect 2x 8ohm cabs

 

[Beefbass]

and why are there 2 output jacks on the back if it can only handel the internal cabinate?

Go to Invalid Link Removed you can find the manual there, and download it.

 

[kevinmoore73]

The Bassman 250/210 puts the full 250 watts into the internal speakers. If you want to use different speakers, you have to unplug the internal one's first.

This is absolutely correct. I looked at this amp a while back but did not buy it because of this. The internal speaker is 4 ohms, meaning you have to unplug it to attach any other speakers.

 

[mountnmonty]

Actualy I spent 10 minutes there last night trying for the first time to locate the download page for the manuals and gave up; Thus venting my confusing speculation as to what I said here. If i had found the manual own my own I would not have sounded so stupid here. My bad, thanks again.

 

[mountnmonty]

OK, its still not clear to me because the following statement in the manual lends itself to be in terpeted that it can handle 1 4 ohm speaker and 2 8 ohms speakers as a recommended configuration.

T. PARALLEL SPEAKER OUTPUTS - Use the 1/4"
phone jacks and Speakon® connector in any
combination to connect a total speaker load of
4–ohms minimum. Combo units have a 4-ohm
internal speaker load for maximum power output.
The following configurations are recommended:
• One 4–ohm speaker
• Two 8–ohm speakers

following this is a picture showing both jacks occupied at the same time.

 

[whacker]

This post from the manual corroborates what two other posters have stated: That the internal speakers of this combo constitute a 4 ohm load, and that, like many solid state amps, the minimum rated load is 4 ohms. Which means that this combo is designed to deliver all its power to its internal speakers, and no simultaneously used additional external speakers should be connected. You'll have to disconnect the internals and use the unit as a head. This is one of those things that you would have had to suss out before purchasing to be able to safely vary from just internal speaker usage. Quite a few combos do it another way, giving you an internal 8 ohm load, and allowing you the possibility of expansion down the road. It's a subjective choice, but one that full disclosure with no presumptions before purchase would help inform. Lots of people want to be able to have maximum available power from an onboard amp into the onboard speakers, provided the drivers can take it (and you can't have it both ways -- either it's designed and equipped for this or it's not). Others want the flexibility thing. There are plusses for both, but more speakers is a good way to "move more air," so perhaps you may need to think about obtaining a different amp some way. You could find (through help on TB) what would be good replacement drivers for the internal cab in this combo, that would give you an 8 ohm load, which would open up the idea of cab expansion.

 

[Joe Nerve]

I asked the same exact question about the same exact amp a couple of days ago, only in different words because I had the manual. I just ordered that amp and I'm waiting on delivery. I was little bummed at the responses I got, so I'm hoping the amp does the job without needing an extension. If not, I'm returning it.

Here's your answer:

http://www.talkbass.com/forum/showthread.php?t=428687

 

[mountnmonty]

OK OK OK, Like I said last year when I was looking for competent advice for rebuilding my old hollow body bass to pass on to new blood;The is no subsitute for experience. I am so glad to get your advice for free here in this forum. Otherwise who knows, I may have burned up that kids amp trying push what it was never designed to do. Thanks again.

Sincerely

 

[Joe Nerve]

Oh... meant to tell ya before that if you ever want the manual to something and can't find it at the manufacturer's site, musicians friend, americanmusical, or just about any online store that's selling what you've got usually has the downloadable manual in their product description. That's where I got mine.

Now some questions about the amp if you don't mind.

1. Do you have the 2X10 or the 1X15? I ordered the 1X15 cuz I want a really light and small 15 incher.

2. Loud is a relative thing unless we're measuring DBs, which we're not - but I'll ask anyhow. Is it loud? That's my main concern. That it will cut through 2 loud guitars and a hard hitting drummer without farting on me. I hate farting combos and the majority of them that I've owned, farted.

Thanks in advance.

 

[Beefbass]

Actualy I spent 10 minutes there last night trying for the first time to locate the download page for the manuals and gave up; Thus venting my confusing speculation as to what I said here. If i had found the manual own my own I would not have sounded so stupid here. My bad, thanks again.

It's not stupid to ask a relevant question, before doing something that would damage your amp. Glad to help out

 

[Beefbass]

Oh... meant to tell ya before that if you ever want the manual to something and can't find it at the manufacturer's site, musicians friend, americanmusical, or just about any online store that's selling what you've got usually has the downloadable manual in their product description. That's where I got mine.

Now some questions about the amp if you don't mind.

1. Do you have the 2X10 or the 1X15? I ordered the 1X15 cuz I want a really light and small 15 incher.

2. Loud is a relative thing unless we're measuring DBs, which we're not - but I'll ask anyhow. Is it loud? That's my main concern. That it will cut through 2 loud guitars and a hard hitting drummer without farting on me. I hate farting combos and the majority of them that I've owned, farted.

Thanks in advance.

I have the 2X10 version, but I'm sure the 15" would sound just fine. One thing you can do, is pull out the rear casters; that will allow you to tilt it back monitor style.

So far, I haven't been in any situations where I didn't find it to be loud enough. Unless your guitarists are insanely loud, and your drummer is looking to break the sound barrier, I think it'll be fine. It IMHO sounds way better than the old BXR 100 did, and I thought that was actually a very nice amp(never had a problem being heard with that one BTW) It's louder than my Yorkville XM200C was, and I never had a problem being heard with that one either. In fact, my Bassman replaced the Yorkville too.