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[quote name='Hamster' post='1150389' date='Mar 5 2011, 11:11 AM']What style of music are you playing and how much do you want to spend? I use a Demeter Compulator which is my personal choice; I've also used a BBE Optostomp and EBS Multicomp which were both good. The Boss comp is OK as long as it's modded as it's a little hissy un-modded. The Aphex Punch Factory is also good. Several people rate the Trace Elliot comp if you can find one. Put the kettle on, grab some Hobnobs and have a read here - [url="http://www.ovnilab.com/index.shtml"]http://www.ovnilab.com/index.shtml[/url][/quote] much food for thought mr Hamster sir :-) I must admit I've never heard of the Demeter Compulator, looks to be very interesting being an optical comp, good reviews too. I've used the Trace comp on a combo amp a few years ago and it was good, but as you say hard to come by. My style of music is rock, indie guitar stuff and blues, budget is probably £150- 200 Problem is I don't have any hobnobs.....just yet

I'm really interested to hear what compressors are being used by other bass chat dudes, I have 2 amps, one being a mesa mpulse which has a built in compressor, I love it because it's not too obvious when in use, very subtle, however my other amp, Ampeg svtII doesn't have compression built in, so I'd like to buy something along the lines of the mesa comp to use with the ampeg, any ideas or recommendations would be useful. I've tried a Boss pedal before (can't remember name of it, little blue one) but too harsh for me. Is anyone using tube compressors and if so what are your thoughts? Cheers

how do you remove a post?????

[quote name='Phil Starr' post='1142822' date='Feb 26 2011, 09:11 PM']I guess you've decided not to do it but there is one more reason not to. Making a 4ohm speaker is often done by just changing the voice coil and this changes all the T/S parameters meaning you need to change the cab. The most common change is to simply use a shorter voice coil and this reduces the excursion limit and hence your bass at power. Both Celestion and Eminence do just this. There's no reason why you can't engineer a 4 but it is rarely anything other than a bodged 8.[/quote] yes gonna give it a miss Phil, now I know I can run an 8 with a 4ohm cab it's not an issue, must say I'm amazed at how much you can learn from posting 1 little question on BC, it's a brilliant community, thanks for all the advice guys!

Btw I tried the svt with the Mesa 1x15 and 410hlf today and it sounded awesome! However it's a very heavy rig, in discussions with Alex @ Barefaced

[quote name='Bill Fitzmaurice' post='1142397' date='Feb 26 2011, 03:03 PM']In most cases you don't want them matched. The average 1x15 does not have either the thermal or the displacement limited capacity of the average 4x10, so if both are 4 ohm receiving the same power the 1x15 is the weak link in the chain. That's especially the case with a 410HLF Your positive experience with a 2x10/1x15 should be telling you something: it takes two fifteens to make a good match with four tens. The exception to this would be a high excursion 15, such as the Eminence 3015LF.[/quote] That's an interesting point, not thought of it like that before, thank you Bill

[quote name='alexclaber' post='1142193' date='Feb 26 2011, 11:27 AM']You'll get a better result running the 8 ohm 15" and 4 ohm 4x10" on the SVT's 4 ohm tap than you will running a 4 ohm 15" and 4 ohm 4x10" on the 2 ohm tap. The reasons are complicated but centre around both varieties of power handling and the realities of actual impedance curves.[/quote] hi Alex, so running these different impedance cabs together wouldn't wouldn't damage my amp, I thought all tube amps were a bit sensitive to this type of tinkering? :-)

[quote name='chris_b' post='1142178' date='Feb 26 2011, 11:10 AM']A lot of expense for very little gain, and you might make it sound worse. 2 are always better than 1, so I'd go for the second cab idea. PS. Just reread the OP. An 8 ohm Mesa Boogie 115 cab will sound great on it's own (I had one) and if you add a second cab (I had the 210) you will have one of the best sounds around. I used my 115 with an SVT3 PRO and 300 watts was loud enough for all of my bands. An extra 210 or 115 will give you such a good sound; I really wouldn't mess with the 115.[/quote] Thanks Chris, I've been running the 2x10 with the 1x15 for a few years now with an Mpulse 600, you're right it is a brilliant combination, trouble is I also like my 410HLF which I've been using with an SVTII which will only run on 4 or 2 ohms, i'd like to use the 1x15 and the 410 but impedances are not matched, having said that the SVTII sounds great through the mesa 2x10 / 1x15 combination too....decisions, decisions

[quote name='Musky' post='1142165' date='Feb 26 2011, 10:50 AM']You can just swap the 8 ohm speaker for a 4 ohm one - AFAIK the tweeter can be disregarded as far as the overall impedance of the cab is concerned. If you're doing this to get an increase in volume by unleashing the extra wattage you're likely to be disappointed though. You'll probably see slightly under 2dB increase in volume, which is all but inaudible in the real world. Adding a second 8 ohm cab would be an entirely different kettle of fish though. Edit: I'm assuming you'd be swapping the speaker like-for like. Obviously using a far more efficient speaker would provide a greater increase in volume, though depending on the specs may change the sound of the cab.[/quote] Thanks for the reply, not doing this for the volume, more to do with working with my current rig, I want to pair the 1x15 up with a 4ohm 4x10 and so run them together at 2ohms powered by an Ampeg SVTII, this would also give me the option of using the 15 on it's own with the SVT running at 4ohms for smaller gigs. As for a replacement I'll ask my local music shop to price me a new replacement driver, they deal with mesa stuff, so hopefully they can get me a like for like speaker. cheers dude :-)

I'm toying with the idea of modifying my mesa 1x15 8ohm cab, I want it be a 4ohm cab, now this might sound like a really dumb question but is it just a case of swapping the 8ohm for a 4ohm and that's that? does the tweeter make any difference to the impedance and if so would I need to change that too? any advice greatly appreciated :-) Cheers

Many thanks for your reply, I'll get the amp serviced, better safe than sorry :-) Cheers [quote name='icastle' post='1131049' date='Feb 17 2011, 02:17 PM']The SVTII manual says: There is no 'Amber option' according to Ampeg. It sounds as though the amp was struggling to decide whether it was in 'Standby' or 'On'. It could be that there was a supply issue and you'll not see the problem again - for peace of mind I'd probably get it looked at by an amp tech.[/quote]

Hoping someone can help with this query..... playing through my Ampeg SVTII the other night at a gig, done first set, put it on standby and the lights on the front went to red, which is obviously normal, however when I turned it back on for the second set instead of green lights I got amber lights, the amp worked fine and the light eventually turned to green after about a minute, question is, do I need to worry about this? does anyone know what it could mean? cheers