Alien

It looks like your amp is rated down to 2 Ohms, so adding another cab will be fine.

If you add another 4 Ohm cab, the overall impedance will drop to 2 Ohms, and your amp will deliver its full 620 Watts, which will be shared equally between the cabs. You'll want to look for a cab with a power rating of around 300-400 Watts.

If you add an 8 Ohm cab, your overall impedance will drop to around 2.7 Ohms, and your amp will deliver about 500-550 watts. However, only 1/3rd of this will go to the 8 Ohm cab, with the 4 Ohm taking the other 2/3rds. In this case, your cab would only need to be rated around 160-200 Watts.

I'm not even going to get into relative efficiencies, as it all starts getting pretty complicated.

Generally speaking, more cone area = more noise.

Andy

One of my basses has a switch on it that's not wired to anything (never got round to it), but most people believe they can hear a difference when I flick it to a different position!

Andy

Sold him a cab - no problems.

Andy

Continuous power rating = the amount of power the speaker can handle for a long period of time.
Program power rating = the amount of power the speaker can handle for a short period of time.

With the BW, it can handle a 350 Watt amp, running a sine wave, flat out but with no distortion, and it'll basically do it forever. The program rating means that you can actually use a 700 Watt amp running real music (which has loud bits and quiet bits), because it will only actually hit 700 Watts occasionally. (With a dynamic instrument like a bass, the average power will probably only be about 70 Watts if your loudest peaks are 700)

There are other things to bear in mind though. If you put 500 Watts through the BW at 500Hz, it'll probably be fine. However, 200 Watts at 50Hz will probably kill it through overexcursion. There's only so much bass you can get out of any given speaker, and if it starts to distort you're using too much power, or too much low EQ. Speaker power ratings are a guide to how much power to use (plugging a 1000 Watt amp into a 10 watt speaker is pretty dumb - you'll never get the amp above 1), but at the end of the day if it sounds OK it probably will be OK. If it distorts, turn it down, or get another speaker if you need to be that loud.

Andy

[quote name='Weird War' post='79961' date='Oct 26 2007, 10:02 PM']Blimey, this brings back memories...

[i]Hey Mister Bassman... play the f**king bass![/i][/quote]

Hey Mr Bassman... get the f**king night bus home!

Quality stuff - I'm gonna have to watch 'em now

Andy

No worries amigo - glad to be of assistance

Andy

Joe, have you grounded the unused end of the pot, or are you just sending the signal through two terminals?

If you feed signal into one end of the track and ground the other, then the wiper will pick up a voltage between full signal level (flat out) and ground (no sound) or anything in between. If you just use one end of the track and the wiper then all you're doing is adding a bit of extra resistance to the output (effectively the input of the following effect/amp stage etc.) which won't do a lot.

470K should be plenty if you do it this way - you'll want a logarithmic (audio taper) pot though, otherwise all the volume change happens at one end of the rotation.

Andy

Another gratuitous self-promoting link [url="http://basschat.co.uk/index.php?showtopic=6859"]here[/url]

3rd item on the list

Andy

1) Listen to everything - whether you like it or not is just a matter of personal taste.
2) Listen - no, really, get a cotton bud, clean out your ears and really LISTEN.
3) If you ain't enjoying it, why should the audience enjoy it?
4) Bum notes don't matter - they're in the past and chances are nobody noticed anyway.

Andy

+1 on the Unibass. Send the FX out to a small guitar combo (I use a Roland Cube 30) and there you have it - Rhythm Guitar in a Box

Andy

What are the impedences of the two cabs? If they're both 8 Ohm they'll share the power equally. If the 2x12 is 4 Ohm and the 1x12 is 8 Ohm, then each driver will get the same power. Either way, extra cone area = extra volume.

Andy

The cab dimensions are: 620mm x 370mm x 390mm deep. They're reasonably heavy but not unmanagable (I can lift them with one hand quite easily, but I'm a fairly large fella).

Soundwise they're fairly loud - one will handle a pub gig easily. The sound is pretty solid down to the low G, drops off a bit below that. The top end is more than adequate because of the whizzer cones in the B102's. Fairly balanced sound. If you want to arrange to come over and check them out, send me a pm.

Andy

Still available.

Andy

Anyone looking for a cheap fretless? This started life as a PJ equipped Fender-alike, from somewhere in the far East. It's been defretted (slots filled with wood strips), reshaped, and sprayed with a granite effect paint (not to everybodys taste, including mine these days). Sounds OK for a cheapo, neck feels like a classic P-bass. How about £30 or nearest offer?

Andy

Left-handed Yamaha Pacifica 112 electric gu**ar. Natural with white scratchplate. Fair bit of buckle rash and a few other dings (one careful owner, but a couple of not-so-careful ones). Plays and sounds great. £45 ono.

Bass hard case, 48”x15.5”x4” external dimensions, not shaped inside, but has a padded movable cushion. Lined with luvverly tartan fuzzy stuff, covered in black tolex with plastic cab-type corners. What's it worth? £15 ono sound about right?

Eclipse CD101 II CD Player. Good working order, with remote control. Anyone need a cheap CD player for live use? £7 ono.

All items are priced without postage.

Andy

Celestion Truvox 1015 Speaker, 10" 70 Watt 8 Ohm. These are standard equipment in some small combos - Marshall springs to mind. This has had a couple of hours use and is a bit dusty, but otherwise fine. £10.

DIY 2x10, 400watt 4ohm, Eminence B102 speakers. Black carpet, steel grille & handles, plastic corners. Choice of 2 - £90 for the more used one (slightly scruffy cosmetically, but structurally fine), £110 for the other (only about 8 hours use on this one).

Peavey Microbass 20W practice amp. This is the older model with the cloth grille, in near mint condition. £40 ono.

Boss CE-20 Chorus Ensemble Pedal. Couple of hours of home use, still in its box. Looks brand new. £90 ovno, 1st class post included.

All items (except the Boss) are priced without postage. Make me an offer guys, I could use the space!

Andy

OK, so I've pretty much got it down to a shortlist of one.

Having looked at Behringer (cheap, but not flexible enough), Samson (quite expensive for what you get, and not a brilliant rep), Yamaha (built like a tank, but you pay for it), and Peavey (used one before - it was always OK, but never anything special, and really heavy), I've pretty much decided on the Phonic Powerpod 1860 Plus.
It's got the Aux sends, onboard FX, plenty of power (measured at sensible levels of distortion too, none of this peak power lark!), 8 mic inputs, and the amp stage can be switched between Main L/R, Mono Main/Aux 1, Aux 1/Aux 2 and Bridged Mono. And it's under £400 [url="http://www.stagebeat.co.uk/P/8559/POWERPOD+1860+PLUS+POWERED+MIXER"]here[/url].

Anyone had any experience of this fella? I've used Phonic stuff before and it's always sounded OK, if not outstanding, and has been pretty reliable in the past - anyone had any bad experience with them?

Andy

+1 to Mountain Song & Summertime Rolls - great riffs.

Stanley Clarke - Schooldays (just the powerchord part - sounds impressive, but it's pretty simple really)
Jam - Down in the Tube Station
Iron Maiden - Rime of the Ancient Mariner (the middle bit)
Velvet Revolver - Slither
Fields of the Nephilim - Celebrate
And finally - my solo bass arrangement of Albatross usually gets somebodys attention

Andy

Good stuff guys - keep those suggestions coming!

Andy

So here's the story. I'm getting fed up with my current PA setup. I currently carry mixer, power amp, Alesis Nanoverb, patch leads etc. and I'm looking to replace it with an all in one unit. Nothing fancy required, as it's just used for vocals most of the time, with keys, drums and background music sometimes. Here's what I'm after spec-wise:

Desk style, [b]not[/b] mixer amp/pod style.
At least 6 mic inputs (preferably more) plus a couple of stereo channels.
2x300 Watt RMS @ 4 Ohms minimum - again more is better.
Built in effects - nothing fancy needed here, just some reverb and maybe a bit of chorus, but if there's more that's OK.
At least 2 Aux sends (in addition to any internal FX sends), more is better, switchable pre/post fader is good too.
Protective cover.
19" rack mountable might be useful, though not immediately.
And finally - the budget. Gotta be less than £400, preferably considerably less.

Can anyone recommend anything that fits the bill? I've got a couple in mind at the moment, but I don't want to influence anyone, so I'm keeping quiet - hopefully one or more of you might confirm that I'm thinking along the right lines.

Thanks in advance

Andy

[quote]3 year old Laney RBW300 for sale. [i][b]300 volts[/b][/i].[/quote]

Whoever's selling it doesn't know what they're on about for starters.

The RBW300 was 165 Watts into 4 Ohms IIRC, and about 100 into the internal 8 Ohm speaker. They're fairly basic, workmanlike amps. I used to own the RBW200, and it always lacked a bit in the bottom end - the 1x15 may improve matters. As to the price, well it's about what I'd expect to see a tidy one advertised at - you'll probably be able to talk the guy down to around the £120 mark though. One went on the 'bay about a week back for £122 [url="http://cgi.ebay.co.uk/LANEY-RBW-300-BASS-AMP-EXCELLENT-COND-LOOKS-NEW_W0QQitemZ160158278323QQihZ006QQcategoryZ58719QQssPageNameZWDVWQQrdZ1QQcmdZViewItem"]Link[/url]

Andy

[quote name='Crazykiwi' post='67648' date='Sep 30 2007, 12:41 PM']
[url="http://www.maplin.co.uk/Module.aspx?ModuleNo=33255&&source=14&doy=30m9"]http://www.maplin.co.uk/Module.aspx?Module...14&doy=30m9[/url]

Three of these are fitted to my V8! They do the job nicely.[/quote]

Spotted those CK, but figured at 13 quid it'd be a bit OTT for a £40 case...

Andy

[quote name='ZPQ' post='67881' date='Sep 30 2007, 08:53 PM']Often manufacturers give the power output at 4ohms, a little misleading if you're only going to use 1 cab.

As far as I can tell this is the case - so with 2 cabs you will get the rated 325watts.[/quote]

Spot on. Your amp will develop about 180-200 Watts into 8 Ohms.

Andy

Well, having the 8" in there will help the mids no end, but the cab's still too small for the 15" to work to its full potential. Don't think this is a criticism of Warwick, most 15" combos (and cabs too for that matter) are too small to get the best out of the speaker.

Andy

Try Maplins - they do a range of strap handles.
[url="http://www.maplin.co.uk/Module.aspx?ModuleNo=43826&criteria=handle&doy=29m9"]These[/url] are pretty good for the money.

Andy