bass_ferret

Now i am really confused - combing and beaming! To translate this to the real world - when I was using 2x2x10 we often did gigs where the other guys were complaining I was too loud - yet I could hardly hear myself. I can understand this was due to comb filtering or lobing - I was in a trough that made me turn up. Since I started using the EBS this has hardly ever happened. Now this could be just chance and I was not standing in the troughs, or it could be that the comb filtering was reduced to such an extent that I never had to turn up past too loud. Or it could be the extra clarity of the EBS rig compared to the Peavey rig meant I could hear myself better irrespective of any acoustic features.

[quote name='mikeh' post='221659' date='Jun 18 2008, 07:20 PM']If I was going to carry on playing Id keep it for sure, but alas Im quitting playing in bands for a while, so it will be up for sale.[/quote] Not again!

[quote name='Crazykiwi' post='221794' date='Jun 18 2008, 10:45 PM']They do spin some Class A sh*t over where speculation about my motives are concerned.[/quote] Well i'm still here! I guess with your new signature you have turned over a new leaf TBH there is not a lot of action over there.

These are the cheapo versions - there are some that are the proper job and there was a guy using one on Jools a while back. I was not impressed. I think MikeyD had one for a while.

There is no stopping you!

How about under your thumb? I'll get my coat.

[quote name='stevie' post='221577' date='Jun 18 2008, 05:42 PM']Here you go ,mike. [url="http://www.htguide.com/forum/showthread.php4?t=29184"]http://www.htguide.com/forum/showthread.php4?t=29184[/url][/quote] Crikey! Those guys are even nerdier than Alex and Bill. Still the laws of physics are the same whether we are talking about bass cabs or centre speakers for home cinema and lots of centres have two woofers each side of a tweeter (I knew there was a reason why I bought a centre with one co-axial driver). Anyway back to this wave length stuff; wave length changes with frequency, the speed of sound is a constant so low frequency notes have a longer wave length than high frequency notes, so if I understand this correctly the wave length being discussed here is related to the crossover frequency? And lobing is the same as comb filtering and that is obviously undesirable in a home cinema system otherwise it screws the sound for those not sitting in the hot seat dead centre.

yes the stops are the worst bit - not my favourite song I have to say. It sounds like the same pattern is used randomly as a fill and to go between chords so its knowing when to play it and when not to play it. I would be inclined to wing it.

A little knowledge can be a dangerous thing There are quite a few cabs with diagonally aligned drivers - lots of EBS, Epifani, Aguillar cabs. Lots of 2x12 and 4x12 cabs are often the size of 4x10's and 8x10's with the drivers diagonally arranged - like my old EBS. I guess this is probably just to keep the cabs the same width but it might help reduce comb filtering.

Weclome - at least you wont have the self appointed basschat police all over your advert

Markbass cabs dont seem to have quite the same esteem as the amps, and I guess that might count against a Markbass combo. Markbass amps and Bergantino cabs seems to be a very popular combination at the moment. Get your arse down to Mark at Bass Direct - its not far, and remember dont mix cabs for best results. While you are there, ask him "where's my f***ing shuttle?".

[quote name='alexclaber' post='221428' date='Jun 18 2008, 03:06 PM']A result of this incident and WE's refusal to market their improved Fletcher loudspeaker was the decision of MGM sound honcho Douglas Shearer for MGM to design their own improved system which would among other things minmize time delay. Hilliard was put in charge of the project which then developed the famous Shearer Horn. An entire galaxy of talent worked on this system including Hilliard, James Lansing, Bob Stephens and even RCA's Harry Olson.[/quote] Would that be James B Lansing?

[quote name='stevie' post='221376' date='Jun 18 2008, 01:47 PM']I suppose a 4 x 12" could be considered a side-by-side design. Limiting vertical dispersion to control unwanted reflections is common practice but a 4 x setup limits dispersion by lobing both vertically and horizontally. So, to be fair, it's not strictly side-by-side.[/quote] The 4x12 and 8x10 cabs came about simply as a way to have enough drivers to handle the power back in the early days. But PA cabs from the same period were vertically aligned 4x12 cabs - thats why you sometimes hear old timers like me talking about PA columns. The reason for the 4x12 guitar cabs being two and two was so you could put your amp on top.

[quote name='lowhand_mike' post='221303' date='Jun 18 2008, 12:24 PM']so essentially as the 3 speakers are working on the same frequencies but work differently to each other ( as in the 10's work differently to the 15) and a crossover wouldn't help the matter, regqrdless of wether it sounds ok it's technically not. unless of course you placed the 3 speakers in one cab (albeit a bloody big cab) you could use a cross over for the 15 to handle the real lows and the 10's to handle the low mids - mids.(?)[/quote] Yes. If you just use a 15 and a 2x10 they will both reproduce the same signal but to differing abilities. The frequency response of each cab will be different but more important the phase (which changes with frequency) response will be different so at some frequencies the cabs will be in phase and reinforcing the signal but at other frequncies will be out of phase creating a cut in the signal. On stage you wont hear this because you will mostly be hearing the top cab nearest your ears unless its a very large stage. You could put a cross over into the cabs. A low pass filter on the 15 and a high pass filter on the 10's. Or you could build a crossover into one of the cabs with an output to the other cab - think about how sub/satellite surround sound systems work. Peavy used to do some cracking 3 way cabs, there was a 1516 cab with a 15 and 2x8 and the 1820 that had an 18 and 2x10. EBS used to do a 3 way bass cab but I dont think they do it anymore so like Alex says 3 way bass cabs are a rare breed, partly because bass players are too ignorant to realise the benefits as some of the posts in this and other threads has shown.

[quote name='chris_b' post='221183' date='Jun 18 2008, 10:17 AM']They generally used 2 mikes when being filmed. One was the FOH and one was the for the film sound. Ah the good old low tech days.[/quote] yes - look at the old film of Woodstock and the proper Isle of Wight festival.

The reason all those studio monitors were OK was because they were 3 way designs so the horizontal alignment would not cause problems because the cabs would have crossed over to the midrange drivers at the frequencies where comb filtering becomes a problem. Again in the example you quote with the 15 and 2x10 if you are using a crossover then the cabs wont be reproducing the same frequencies. The problem with most bass cabs is that being 2 way the big speakers are reproducing the low and mid frequencies.

[quote name='chardbass' post='221069' date='Jun 18 2008, 03:39 AM'] It ain't me that's being the smart-arse! My knowledge of such matters is inferior to others' on this forum- I can spot a bully when I see one though.[/quote] So when are you going to stop calling people names and contribute something posetive to this thread?

Oxblood is your man for valves but you will have to go to finnbass to ask him. Unlike some of the others I dont think he fell out with kiwi - just got fed up with tossers who knew f*** all telling him he was talking bollocks. Ring any bells with some of the threads that have been active lately.

Dont worry Jaime, all bass players are obsessed by watts If you look at the specs Warwick actually say 200 watts continuous, 400 watts peak. Peavey always used to list a continuous and peak rating but most cab makers only publish the peak. In theory the continuous rating is just that - what the cabs or drivers can handle on continuous power like just holding a low note on a keyboard. Bass playing is never about continuous power and most of the time its f*** all because the peak power is only output when we strike the string and immediately starts dropping. You sometimes see average power quoted but that is equally bullshit. One of these days somebody will write something about cabs for the wiki. Perhaps chardbass could do it.

An amplifier will only output its maximum wattage (measured in volts in the wiki article) irrespective of where the master volume is set. So if the signal is hotter in the preamp cos of input and tone settings then the maximum output is reached lower on the master volume than if the input and tone settings are lower. Once an amplifier is pushing out its maximum rated power (or hitting the limiter if there is one on the output stage - there often is) turning the volume up makes no difference.

Sorry - if the sh*t fits...............................

Genz Benz!

Waters and Macca - didn't Macca write some orchestral thing recently?

EBS Microbass II would do the job - not cheap though but thats what I used it for although both basses were active. Active basses are are not always louder than passive basses. Other than that - turn the active bass down.