Talk:Bass amplifier

message: I assessed this article as start class today, because although long and detailed, there were few refs for most of the article. If anyone improves it and wants it reassessed, please drop me a line.Jacqke (talk) 19:21, 9 May 2018 (UTC)
thread_title: Assessment, start class for now

message: Maybe we need a bit about amplifying other types of bas instrument like brass basses, bassoons, bass saxophones etc. THese could all go in one para under wind instrument amplification say. THe para would need to state the problems assiciated with amplifying these acoustic instruments.--Light current 18:34, 4 June 2006 (UTC)
thread_title:  other bass instruments? 

message: Natmor, Perhaps an amended version of this para could be put in the DB article? What do you think? 8-|--Light current 21:49, 7 June 2006 (UTC)
thread_title:  Amplifying DBs 

message: I think that bit is a bit misleading. Most amplification at large venues comes from the PA, not the bass amp. A person at a large concert might use a relatively small rig for monitoring, while a person might use an 8x10 at a clubif they don't have a PA to plug into. The article should mention that the amp may or may not have to project bass into the whole venue. --Howdybob 13:58, 8 June 2006 (UTC)
thread_title:  Amp size and gig size 

message: I don't know that an attempt at explaining ports is appropriate here. It might be better to just mention it and link to bass reflex and other articles.. There are various tradeoffs and it's a bit much to explain them. Sealed cabs don't necessarily make "truer" bass if you include low distortion as a criterion. BR is by far the more common and I think it might be best to leave it at that. I might change later it but if I do I wanted to explain why I'd cut it out. --Howdybob 14:03, 11 June 2006 (UTC)
replies: text: The disadvantage of using tuned ports is that there is no air pressure difference to help 'spring' the driver back into place, so the low-frequency sound production may not be as precise.
That's not right. At the tuning frequency the ported cab has a lot more backpressure on the cone. Below tuning the sealed cab does. The issue of overexcursion and whatnot depends on the tuning frequency, the strength and pitch of the lower fundamentals coming from the bass, and other things. I think this should be left out as a proper explanation would be long and not really appropriate here, especially considering most bass cabs are BR anyway. I may cut this stuff out but I don't know if Natmor is done yet. --Howdybob 16:20, 11 June 2006 (UTC)
thread_title:  Sealed vs. ported 

message: Many bassists plug right into the mixer for recording or sound reinforcement, as opposed to guitarists who almost always use mic'd speakers as a part of their sound. This should be mentioned somewhere in the article. --Howdybob 11:54, 12 June 2006 (UTC)
thread_title:  DI's 

message: What is this actually saying? Anything -- or nothing?--Light current 00:14, 14 June 2006 (UTC)
thread_title:  Last para of lede 

message: Article says:
When a bass speaker is built into a completely sealed cabinet, the cabinets use the trapped volume of air to act as a 'spring' or cushion for the bass speaker. These designs require more amplifier power to produce low-frequency sounds, because the speaker has to overcome the force of the air pressure in the cabinet and there is no reinforcement of the output of the speaker cones. This design is less common due to the need for very high output in live music venues.
Does anyone know roughly how much less efficient a sealed cab is than a refex of equivalent internal volume in the bottom couple of octaves? (Or how much more power is needed for same loudness)--Light current 15:38, 20 June 2006 (UTC)
replies: text: The answer depends on several factors. A poorly designed bass reflex cabinet is pretty useless, however efficient. One note boomy and all that. But comparing properly designed systems with approapriate drivers, the difference is quite large. Sealed boxes of this type (everyone else in the world calls them acoustic suspension) are inherently inefficient as result of the design objectives. And the smaller the box, essentailly, the greater the inefficiency. See Hoffman's Iron Laws. But this all somewhat evdes the real question which is, if you need loud at musically significant low frequencies, you can't seriously use an acoutic suspension box, shouldn't use a really large box (effectively infinite baffle) or an open backed box as either causes so many acoustic imedance matching problems as tlow frequencies as to be not worth attempting to work around. That leaves bass reflex, which are efficient but REQUIRE close matching between the driver used and the box and port (same for passive radiator variations) and "other" designs. Fiddling with the driver to improve the sound, or poor manufacturer quality control or abuse of the driver (too low frequencies to a bass reflex design will bottom out any driver) will change this adjustment, almost certainly in a bad direction. Horn designs (by which I do not mean short horns with or w/o reflex ports, like the Altec Voice of the Theatre variants) but actual horns are perhaps best, thoght limited to maybe 3 octaves or so for best performance. They are large and heavy, and if folded, heavier and very complex. If they can handle tones to 40hx and maybe a bit below. In all cases, one can use more (2, 4 , 6 , 8, ...) cabinets, but hten one is talking about an entire truck fo rthe bassist. There's no perfect solution, claims to the contrary not withstanding from advertising or from designers who really don't understand the issues involved. You should not have to use some special driver (with exotic diaphragm material, and you should not have to spend humongous amounts of money for magic enclosures. There aren't any. All rely on mundane physics, though not necessarily easy phsics to apply in practice. ww (talk) 02:18, 9 March 2010 (UTC)
thread_title:  Question on sealed cabs. 

message: http://en.wikipedia.org/wiki/Talk:Distortion#Proposed_Article_Titles_and_Changes
The refactoring is in-progress. MichaelSHoffman 03:38, 8 August 2006 (UTC)
thread_title:  Proposal: Break out Guitar-dedicated articles 

message: Anyone know of a small (prefereably lightweight) cab or combo (< 1 cu ft) that can reproduce the bottom string (E) on a bass with less than 3 dB loss? Im not particularly interested in very loud cabs. (90 dBA @ 1m would be ok)--Light current 23:53, 12 September 2006 (UTC)
replies: text: I'd doubt there can be such a beast. That's small, and that's moderately loud at that low a frequncy, and imply huge inefficieny. Not clear any maker would make such an inefficient box as the market would react badly (you mean I have to use a mega $ amp just for this littel box??!!!!! All that said, I think your best bet might be a large driver in a small acoustic suspension box. Will need a large amp though. ww (talk) 02:18, 9 March 2010 (UTC)
thread_title:  Small bass cabs or combos 

message: The Bass effects article appears to overlap with Bass instrument amplification, and perhps really ought to be merged into the effects section.  -- Whpq 17:11, 17 January 2007 (UTC)
replies: text: Hi, I disagree with a merge...bass amplification is about the power and physics side of things (getting big speaker cone to move, dealing with air moving in big wooden box, etc.).  Bass effects is about the electronic signal side, where you are changing the signal with transistors and computer chips...Nazamo 19:42, 9 July 2007 (UTC)
thread_title: Merge

message: Harmony Central lists about 150 manufacturers, so this list has the potential to become unwieldy. Could we take another approach? / edgarde 21:27, 24 February 2007 (UTC)
thread_title:  ''Manufacturers of bass amplifiers or loudspeakers'' list 

message: In the current article, there are two extensive tracts in which an editor speaks of his personal experience building and using bass speakers. This is Original Research, forbidden in WP artilce.s I suggest that these parts be changed to examples of common bass speaker designs of the time rather than personal experiences. Since both sections contain useful information (if only that Sunn and EV did it this way and successfully) I don't think the material should be just left out. 
With some improvements, and some corrections as to the effect of enclosure design (the physics is important, more ao than for other instrument amps) I think this could be an excellent article. 
Comment? ww (talk) 22:46, 22 June 2008 (UTC)
replies: text: If you can do it, I will applaud. Binksternet (talk) 02:34, 9 March 2010 (UTC)
replies: text: I've removed some of what I consider to be original research and unencyclopedic content. --Kvng (talk) 04:11, 9 March 2010 (UTC)
thread_title: Original research unacceptable

message: The introduction contained the following statement "This is due mainly to the fact that loudspeakers become less efficient at lower frequencies (depending on the size of the driver) and because the human ear requires greater sound pressure levels at lower frequency to hear equal loudness". It was recently edited to remove the bit about efficiency. I don't think there is any dispute that bass amps are bigger. I find both original explanations plausible and I can come up with a few others of my own too if you like. I've removed the entire statement. Let's find something citable, please --Kvng (talk) 02:27, 12 April 2010 (UTC)
replies: text: The "loudspeakers become less efficient at lower frequencies" statement is not generally true, unless you're talking about frequencies below the resonant frequency. Short Brigade Harvester Boris (talk) 02:30, 12 April 2010 (UTC)
replies: text: But I believe a large cabinet is required to achieve a low resonant frequency so it is potentially a legit explanation for the larger size that was the context for the statement. Removing it was the right thing to do. The F-M discussion was also tenuous and so it had to go. IMO the article reads fine without the removed statements. --Kvng (talk) 01:56, 13 April 2010 (UTC)
replies: text: OK, that's fine. A larger driver will tend to have a lower free-air resonant frequency than a small one, simply because it has a larger mass (let's see if Thiele-Small parameters is a bluelink). Of course you're correct that the cabinet has a large effect. Short Brigade Harvester Boris (talk) 02:38, 13 April 2010 (UTC)
replies: text: Try Thiele/Small --Kvng (talk) 18:26, 13 April 2010 (UTC)
thread_title: Size

message: Piano key frequencies says 41Hz which I'm fairly sure is the open string E on a standard bass guitar is E1.  The reference (4) also says that so I'm changing it. PeterGrecian (talk) 14:35, 23 April 2012 (UTC)
thread_title:  E1 or E2 for 41Hz? 

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thread_title:  External links modified 

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thread_title:  External links modified 

message: The foundation of Ampeg is inextricably tied to the evolution of the electrified bass. Their foundational product was in fact a pickup intended specifically for upright bass that the designers called the "Amplified Peg." A few years later, the company was renamed The Ampeg Bassamp Company.
Any company can push out amplifiers. Any amp can be branded "a bass amp." In the context of this article, companies (such as Ampeg or Eden Electronics) that began from a focus on the specific real-world needs of the electrified bass ought to be featured prominently in this article. Weeb Dingle (talk) 17:06, 4 September 2017 (UTC)
thread_title:  notable gap: Ampeg 

message: The entire overlong Bass amplifier#Types has only three references, with most subsections entirely unsupported. I will be hacking away at this, not least being distractions such as price comparisons and who-used-what trivia.Weeb Dingle (talk) 02:03, 2 December 2019 (UTC)
thread_title:  due for major pruning