I was going to point you to Carvin's official schematics (Invalid Link Removed), but it appears they don't list the BX1500!
Enjoy the benefits of a premium membership!
Upgrade Account
-
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 free Log in
Want zero display ads or expanded classifieds tools? Compare plans.
Carvin's BX1500 and B2000
- Thread starter vinxbass
- Start date
In an effort to maximize experimentation I want to bypass the preamp of my bx1500.
I assume the best way to do this is take the signal of my external preamp and plug into the 'return' jack on the back of the amp.
However, what about the amp's "insert 1 & 2" jacks? What are they for?
Also of note is that I only run my amp bridged at 8 ohms so I need to keep that figured into things as well since I'll be using both 'sides' of the amp.
I assume the best way to do this is take the signal of my external preamp and plug into the 'return' jack on the back of the amp.
However, what about the amp's "insert 1 & 2" jacks? What are they for?
Also of note is that I only run my amp bridged at 8 ohms so I need to keep that figured into things as well since I'll be using both 'sides' of the amp.
Well, I finally pulled the trigger and am awaiting delivery of my BX1500Can't wait to start playing through it, and I'm already wearing my happy grin
Yes but are you doing your happy dance??
The Insert 1 and 2 jacks are for sending a signal to each individual power amp. they are a tip-ring-sleeve setup so you would send and return on the same cable (different conductors). I would suggest you stick with the effects return jack esp if you are running the amp bridged.
Yes but are you doing your happy dance??
Not yet... No tracking number yet!
Dekker
You Have not gotten your tracking number??? I would be calling them cause i got mine for the b2000 this last Monday and it is already in Calgary...and we ordered both are heads on the same day!! I know they did tell me that if i did not get a tracking number that i should give them a call....i hope you head is shipped and they just forgot to send you the number!!
Mine should be here on Monday.....I need to find a rack case for it though.
SKB four space case. Amp, a tuner and a power bar and I can lift it with two fingers.
I think I'm going to jumo for teh bx1500.
One question I have is I also need to get some cabs. Have decided on Markbass, a 4-10 and 1-15. One question....The markbass 15 only available at 8 ohms. The 4-10 can be ordered at 8 ohms OR 4 ohms. What ohm 4-10 should I get to get the max out of the BX1500 for running both of these cabs?
One question I have is I also need to get some cabs. Have decided on Markbass, a 4-10 and 1-15. One question....The markbass 15 only available at 8 ohms. The 4-10 can be ordered at 8 ohms OR 4 ohms. What ohm 4-10 should I get to get the max out of the BX1500 for running both of these cabs?
Port location doesnt matter. However, my preference is rear ported. If you stick a cab in a corner that has rear porting, you increase the lowend of the cab by a signifcant margin. Its nice to have that option.
As far as ohms of the cab I would go for two 8 ohms for two reasons. 1. You could bridge the amp at 4 ohms for 1500w... which is huge. 2. If you ever decided to change amps two 8 ohm cabs are ideal to get the most of the majority of amps.
That said, markbass cabs are not super well liked on TB so I would demo before purchase. As far as drivers, its best that you get two of the EXACT same cab. Either two 115s or two 410s.
Have you ever thought of getting a fEARful cab? The bx1500 is perfect for those cabs. I use a 15/6. Portable, loud, great tone... just saying!
As far as ohms of the cab I would go for two 8 ohms for two reasons. 1. You could bridge the amp at 4 ohms for 1500w... which is huge. 2. If you ever decided to change amps two 8 ohm cabs are ideal to get the most of the majority of amps.
That said, markbass cabs are not super well liked on TB so I would demo before purchase. As far as drivers, its best that you get two of the EXACT same cab. Either two 115s or two 410s.
Have you ever thought of getting a fEARful cab? The bx1500 is perfect for those cabs. I use a 15/6. Portable, loud, great tone... just saying!
It is never a good thing to mix speakers the only reason you see them is because they look good!!! use to have a 410 115 setup at one time when i did not know better...would never do it again...the 115 was the weak link....got rid of the 115 got another 410 BIG difference. when you run an 8ohm 410 and 115 together the 115 gets the same power as the 410 but it can only handle about half of a 410 so it will give out way before the 410 will and the 420 will be alot louder!!! then there is the whole thing of displacement which is a whole other matter....the cab gurus out there can explain it alot better then i can!! The short of the matter is....the short of the matter is Mixing speakers sizes is a hit and miss at the best of times!!
One thing is certain,saying never is a bad move.Plenty of players have had great experiences with mixing speakers,me being one of them.
Ok...I think, I understand the concept. What about bridging? Does that fix the power displacement?
I have an old Peavey 1820 (2-10's and 1-18 in the same cabinet). Does this have the same issue?
Gotta admit I do not see modern day amps with mixed speaker sizes though.....
I have an old Peavey 1820 (2-10's and 1-18 in the same cabinet). Does this have the same issue?
Gotta admit I do not see modern day amps with mixed speaker sizes though.....
....i am just speaking for myself when i say never and no one else....i am in the the fEARful cabs now with do have 2 speaker sizes what that is different cause they are crossed over so that they are not trying to get the same Frequencies out of 2 different sized speakers... instead of fighting ageist them selves they are working together at different frequencies to combine for one full sound
Now i am not trying to tell other people not to use the 410 115 setup...i mean if it is working for them and they are getting the sound they want from it then great!! it is all about what your ears are telling you...for me i did not like it and will never go back to it!!!...and as for bridged it does not make any difference cause the 2 8 ohm cab are still making a 4 ohms load on the amp which is still going to get split 5050 between the 2 cabs....the ideal 115 410 setup would be to have a 4ohm 410 and a 8ohm 115...which would give a combined load 2.6 ohms...which would mean that the 115 would get 1/3 ad the 410 2/3's the power....that being said the BX1500 bridged will not go lower the 4 ohms you would need the b2000 which can be used down to 2 ohms putting out 2050 watts!!
Two other things I will add is that different drivers should definitely not be mixed in the same cab (ie 118 and 2-10s). That is unless each of the sets of drivers has its own chamber. I dont understand the science of it, but time and time again I have read on TB how its a bad idea.
The other thing is... if you use a bx1500 using two different cab configurations might actually be okay because with the bx1500 you have two seperate amps... each with their own vol control. Therefore, you should be able to match the volume each cab is getting.
I am sure if I got that wrong someone will correct me, but that is my understanding.
The other thing is... if you use a bx1500 using two different cab configurations might actually be okay because with the bx1500 you have two seperate amps... each with their own vol control. Therefore, you should be able to match the volume each cab is getting.
I am sure if I got that wrong someone will correct me, but that is my understanding.
FWIW, that Peavey cab (18 & 2 10s) does have a builtin crossover, so it is also a slightly different animal... not the same as running mismatched speakers full range. You can also power the 10s and the 18 separately, and was really meant to be used biamped with a crossover.
Which, BTW, is yet another feature of the BX1500.
Which, BTW, is yet another feature of the BX1500.
