geoffbyrne

Very interesting. I went over to the studio this morning & took off the grill - it turns out the tubes are 165mm!! Less than I thought. Could you maybe plug that in, when you get the chance, and maybe suggest to me what length of tube may be optimal here - I expected them to be 200mm and Bill suggests 250. I have to say that the cab sounds absolutely great to my ears - I'm a kind of small bass boost, medium low-mids boost, mild treble-cut kind of guy. Lop-sided frown, if you like graphic EQ. Looking forward to the graphs. I forgot to mention the cab will be driven by either an Ashdown MAG 400 (UK - 465W@4 Ohms) or an Ashdown MiBass 550. Apropos your 'not in heaven' opinion - I have a smaller cab containing a Kappalite 3015 - is W=460, D=340 & H=500. It has two small ports 75mm wide and tubes 120 deep. Would it be worthwhile swapping the drivers? I also have a Celestion K15 200W kicking around. It was my understanding that 2515s needed a larger volume cab to deliver. G.

Ab. Fab!!! G.

I suppose I'll need to take the grill off...... G.

Hi Balcro, thanks for the help. Yes, all the usual stuff. As for the ports, I can't measure them as (a) the cab isn't here, it's at the studio and ( I'd need to take the grill off. I know the guy who sold me the empty cab told me it was tuned pretty low. They are certainly 6", 150mm. That's the 2515 in the pic - a lot better than the 200W Celestion that was in it before. I know the 2515 needs a big cab to get the best from it and to my ear it certainly delivers - I just want to see what the figures & charts say. Many thanks. G.

Cab: made from standard ply (18mm?) Width: 620 Length: 500 Height: 540 4 x vents: 100mm with tubes approx 200mm Eminence 2515 driver I'm hopeless with this software - thanks in advance. G.

I've put them in my wedges and they sound great! Stamped chassis, but very heavy gauge, and a really big magnet. They are being fed by one side of a power amp rated at 300W/side, so each should handle 150W max. I reckon we're ok here. G.

If summer, a large electric fan. G.

.....and don't forget to tape over your pickups...... G.

To get more headroom, you could replace the 12AX7s with 5751s (approx 70% gain), 12AV7 (approx 40% gain) and the 12AU7 (approx 20% gain). I'm not sure you'd need to change all of them - maybe just the V1, but others who know much more than I will be along soon..... G.

I bought them off a local musician for £50 the pair - he reckons he bought them 20 years ago & they have been lightly used in a keyboard 2x12. He scrapped the cab years ago but kept the drivers. I bought them to go into a pair of wedge monitors, but they're maybe overkill for that at 300W each. G.

Thanks Bill - maybe I did all right. G.

I picked up a couple of speakers cheap. The magnets have been painted black, but each has had 'RCF 300' written in black marker on it. I've never heard of RCF drivers. Anyone tell me more? G.

I've seen grain enhancement done by lightly charring(!!!!!) with a blowtorch & sanding back........very effective though. G.

Not bad for a 7 year old thread...... G.

Still using this: G.

[quote name='operative451' timestamp='1394191558' post='2388912'] Damn, you would have to be in the north! Otherwise i'd be in... Yes, you'd get laughed at, so what? There's a market, i'm sure you're aware of the whitby weekenders oop that way? The only reason i keep my zoom 505 is the flange and reverb sounds are nice for that sisters/mission swirly bass wobbliness..! [/quote] Damn! You would have to be too far South!!! Break a leg! G.

To the best of my knowledge, a '74 P bass hasn't got a preamp, only the passive standard circuit. As for value, others who know more may comment on that. If it plays well and you like it, then play it and enjoy it. G.

Used to go into his grandfaither's cafe in Paisley back in the 60's...... G.

Heather Small? G.

[quote name='terry' timestamp='1393499811' post='2380996'] Hi G, I am just outside Kilmarnock mate. Do you know of any good teachers in the Glasgow or Ayrshire area? [/quote] Sorry Terry, can't help you there. G.

Hi Terry & Welcome! Where are you? I'm in Wishaw. G.

If it reads 5.6 Ohms, then it will be a n 8 Ohm speaker. A 4 Ohm would read around 2.8 Ohms (ish). G.

I learned to play fretless on a beautiful Westone Thunder III Mk2 which was totally unlined and had the side markers where the appropriate frets would be. I played many gigs with this strung both EADG and BEAD, Later I had a Yamaha TRB1005 Fretless which was both 35" scale and lined, with dots between fretmarkers, as mentioned above. I found both the lines *and* the scale offputting. The extra inch(!) may not seem much, but I found it was just enough to make me have to concentrate on the intonation over the music, and I also found the placement of the side dots a distraction. All this contrived to convince me to part with what was otherwise a wonderful instrument. I believe the current owner is very happy with it. I may also say that the Westone Thunder III was also a magnificent bass, being a one-piece body and with a beautiful ebony fingerboard - don't confuse these with Thunder 1's, they are a quantum leap in quality. The electrics were amazing too, with a single active tone knob and a passive treble cut. It also had a series/parallel switch and was active/passive. Certainly one of the best basses I ever laid hands on. If it had been a 5 string, I'd never have parted with it. I now have a wonderful (but inexpensive) 34" scale Yamaha BBGN modded with Yammy RBX375 humbucking double pole pickups and The Bass Doc stripped off the fretboard and replaced it with a magnificent unmarked ebony fingerboard with the side dots in the 'correct' positions. A truly beautiful job and a lovely instrument for me to play. Thanks Howard. Being the scale that suits my muscle memory, and having the side dots where I prefer them, I find I am very comfortable playing this bass. G.

[quote name='EssentialTension' timestamp='1392067184' post='2364381'] I was exaggerating so as to look flashier. [/quote] G.