neptunehealer Posted January 18, 2013 Share Posted January 18, 2013 Hello all. I have been gigging with a Mark Bass F Series head (limited edition) for a couple of years now. In fact i bought it off here. As i am now seeking to use it at 4 ohms i have entered the realms of needing to know it's maxcimum power output. I have looked online and i can't find an official spec, just seen for sale adverts. People selling them say it's rated 250@8ohms and 450@4ohms. I know it says 450W on the front of the head, but on the back of the head on a silver plate it says Power rating = 550W So is my head 450@4ohms or 550@ohms? Here's a pic of it to help you to help me. http://www.google.co.uk/imgres?hl=en&client=firefox-a&hs=Mq&sa=X&tbo=d&rls=org.mozilla:en-GB:official&biw=1280&bih=707&tbm=isch&tbnid=xbq7HlBHEX8-nM:&imgrefurl=http://www.talkbass.com/forum/f8/anybody-using-bass-rig-completely-non-us-uk-918111/index2.html&docid=At2EyEbyvjR_0M&imgurl=http://medias.audiofanzine.com/images/normal/markbass-little-mark-f1-limited-edition-315346.jpg&w=3264&h=2448&ei=Ryj5UM2dMc2W0QXMqoD4Ag&zoom=1&iact=rc&dur=1&sig=109946944603662019504&page=1&tbnh=142&tbnw=186&start=0&ndsp=31&ved=1t:429,r:1,s:0,i:86&tx=71&ty=43 Quote Link to comment Share on other sites More sharing options...
obbm Posted January 18, 2013 Share Posted January 18, 2013 Why don't you just email Markbass and ask them? Quote Link to comment Share on other sites More sharing options...
neptunehealer Posted January 18, 2013 Author Share Posted January 18, 2013 [quote name='obbm' timestamp='1358506497' post='1940359'] Why don't you just email Markbass and ask them? [/quote] Nice one, why didn't i actually think of that!!! Thanks though. Quote Link to comment Share on other sites More sharing options...
Telebass Posted January 18, 2013 Share Posted January 18, 2013 "People selling them say it's rated 250@8ohms and 450@4ohms" Correct. Quote Link to comment Share on other sites More sharing options...
ShaunB Posted January 18, 2013 Share Posted January 18, 2013 (edited) [size=4][font=arial, helvetica, sans-serif]...this guy seems to think:[/font][/size] [size=4][font=arial, helvetica, sans-serif][url="http://www.kostis.net/en/private/bass.htm"]http://www.kostis.ne...rivate/bass.htm[/url][/font][/size] [size=4][font=arial, helvetica, sans-serif]Scroll down: [color=#000000]450 W RMS at 4 Ohms, 280 W RMS at 8 Ohms, 2 RU, 8 kg[/color][/font][/size] [size=4][font=arial, helvetica, sans-serif][color=#000000]Odd they don't show the a[/color]mp on their discontinued page...[/font][/size] [size=4][font=arial, helvetica, sans-serif]...and [/font][/size]http://basschat.co.uk/topic/28253-sold-markbass-little-mark-450w-sold/ Edited January 18, 2013 by ShaunB Quote Link to comment Share on other sites More sharing options...
mybass Posted January 18, 2013 Share Posted January 18, 2013 [quote name='neptunehealer' timestamp='1358506091' post='1940349'] Hello all. I have been gigging with a Mark Bass F Series head (limited edition) for a couple of years now. In fact i bought it off here. As i am now seeking to use it at 4 ohms i have entered the realms of needing to know it's maxcimum power output. I have looked online and i can't find an official spec, just seen for sale adverts. People selling them say it's rated 250@8ohms and 450@4ohms. I know it says 450W on the front of the head, but on the back of the head on a silver plate it says Power rating = 550W So is my head 450@4ohms or 550@ohms? Here's a pic of it to help you to help me. [url="http://www.google.co.uk/imgres?hl=en&client=firefox-a&hs=Mq&sa=X&tbo=d&rls=org.mozilla:en-GB:official&biw=1280&bih=707&tbm=isch&tbnid=xbq7HlBHEX8-nM:&imgrefurl=http://www.talkbass.com/forum/f8/anybody-using-bass-rig-completely-non-us-uk-918111/index2.html&docid=At2EyEbyvjR_0M&imgurl=http://medias.audiofanzine.com/images/normal/markbass-little-mark-f1-limited-edition-315346.jpg&w=3264&h=2448&ei=Ryj5UM2dMc2W0QXMqoD4Ag&zoom=1&iact=rc&dur=1&sig=109946944603662019504&page=1&tbnh=142&tbnw=186&start=0&ndsp=31&ved=1t:429,r:1,s:0,i:86&tx=71&ty=43"]http://www.google.co...:86&tx=71&ty=43[/url] [/quote] I think the amps are 'moderately' rated a little below what they actually can put out. Quote Link to comment Share on other sites More sharing options...
discreet Posted January 18, 2013 Share Posted January 18, 2013 In my experience, regardless of spec Markbass amp go loud! Quote Link to comment Share on other sites More sharing options...
Musky Posted January 18, 2013 Share Posted January 18, 2013 The 550w stated on the back of the amp is the power consumption, not what the amp puts out to the speakers. 1 Quote Link to comment Share on other sites More sharing options...
andydye Posted January 18, 2013 Share Posted January 18, 2013 F500 http://www.markbass.it/product_detail.php?id=94 F1 http://www.markbass.it/product_detail.php?id=82 Is that them all? Theyre both 500w at 4 ohm...? Quote Link to comment Share on other sites More sharing options...
steve-bbb Posted January 18, 2013 Share Posted January 18, 2013 from a local amp tech here he tells me that speakers are rarely ever exactly 4 or 8 ohms so if you want accurate figure prob best to get somebody to throw multimeter at it maybe ?? Quote Link to comment Share on other sites More sharing options...
obbm Posted January 18, 2013 Share Posted January 18, 2013 [quote name='steve-bbb' timestamp='1358537927' post='1941206'] from a local amp tech here he tells me that speakers are rarely ever exactly 4 or 8 ohms so if you want accurate figure prob best to get somebody to throw multimeter at it maybe ?? [/quote] Impedance varies with frequency and cannot be measured with a multimeter. The pure resistance of a 4-ohm speaker will be in the order of 6-ohms. Quote Link to comment Share on other sites More sharing options...
warwickhunt Posted January 18, 2013 Share Posted January 18, 2013 Not trying to be ar5ey but even the 100w difference between the lowest and highest ratings won't make a ha'peth of difference in the real world. The ratings on the cabs (regardless of make) will be just as vague/incorrect as the amps ratings and whether you are putting in 550w rather than 450w won't 'really' matter. Quote Link to comment Share on other sites More sharing options...
Lozz196 Posted January 18, 2013 Share Posted January 18, 2013 [quote name='discreet' timestamp='1358518886' post='1940695'] In my experience, regardless of spec Markbass amp go loud! [/quote] Yep, loud at 8ohms, and a bit louder at 4ohms should be their spec Quote Link to comment Share on other sites More sharing options...
Telebass Posted January 19, 2013 Share Posted January 19, 2013 [quote name='warwickhunt' timestamp='1358538448' post='1941217'] Not trying to be ar5ey but even the 100w difference between the lowest and highest ratings won't make a ha'peth of difference in the real world. The ratings on the cabs (regardless of make) will be just as vague/incorrect as the amps ratings and whether you are putting in 550w rather than 450w won't 'really' matter. [/quote] Perzakly. Quote Link to comment Share on other sites More sharing options...
Telebass Posted January 19, 2013 Share Posted January 19, 2013 [quote name='warwickhunt' timestamp='1358538448' post='1941217'] Not trying to be ar5ey but even the 100w difference between the lowest and highest ratings won't make a ha'peth of difference in the real world. The ratings on the cabs (regardless of make) will be just as vague/incorrect as the amps ratings and whether you are putting in 550w rather than 450w won't 'really' matter. [/quote] Perzakly. Quote Link to comment Share on other sites More sharing options...
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