fleabag

Wow - tricky. Seems i cannot find those exact dimensions in a port tube

I've just cottoned on - ports need to be 140 EACH Hence extending the first one by 45mm

[quote name='stevie' timestamp='1399539000' post='2445073'] The two drivers you have will comfortably handle around 300 watts of bass in your box. Although one port was sufficient with your previous drivers, you really need to add a second port if you are going to take advantage of your new drivers' higher power. Two ports of 95mm internal diameter need to be 140mm long - which means extending your existing one or taking it out and fitting two plastic ones with flanges. Braces are something that you can always add later. To check whether braces would help, feel how much the panels of your cab are vibrating when you play your bottom E. Just out of interest, this is the kind of frequency response you can expect (bear in mind that the room will compensate to some extent for the fall in the bottom octave): [/quote] Many thanks stevie !! Thats a quick reply So, instead of faffing about adding an extra port, i can extend the original one to 140 mm ?

Stevie - i have just found out that if i fit the braces, i wont be able to get to the only area where a 2nd port can be fitted , assuming you think i still need one. I can get to the outside backboard obviously, but i'd want to seal the port on the inside too The Beymas have been promised for delivery today ( Thurs ) and i have already cut the braces for cab 1, but as stated, will not fit them till i've sorted the 2nd port - can you run your software and see what pans out, taking into consideration the first port is staying put ? I had a look in case i needed to remove it but its well glued in, and i'd wreck the board getting it out cheers !

Yes, i believe the Peavey TX 210 was fitted with a tweeter at the factory, but was removed by a previous owner, and no problem for me. I hate tweeters

Cheers stevie Yes it does seem weird that baffle brace only goes 3/4 of the way across--- it stops because of the port tube presumably. Although 15mm thick, the board is about 8" in width. Odd ! Its actually attached / glued / nailed ? to 3 sides, ( baffle board back board and one side board, which i didnt mention above but i will brace elswhere as you say, in those 2 places numbered

The previous owner , aende ( a member here - good lad too ) may have done some of the wadding though its possibly original Peavey. Maybe that baffle brace too

Just a looksee inside, and there seems to be a lot of wadding already. Also, there's some bracing almost 3/4 of the way across the cab, attached to the baffle board and the back board, running horizontal, though it doesnt quite reach the other side ( No.3 ) but is quite thick - at least 15mm. If any bracing needed, i think i could put 2 pieces beneath each driver , full wdith ( No. 1 and 2 ) This pic showing more inside and how much wadding already there - only the back board seems to have any bareness

Sounds like snake oil Besides, i have castors on the bottom cab

Beymas ordered - could be 4 weeks , due to sporadic info, spanish postal system, and whether there might be some stock already in the UK. We'll see Might as well get on with the bracing and extra damping

Thanks David - one of only 2 is pretty exclusive Oh - just remembered, one of the previous owners fitted a pair of Nordstrands

MY RS Sig , Retrovibe, and pimped ' Vintage ' MM with Inductor circuit 1989 defretted, passive vol vol tone mod Retrovibe Aero 1, Nordstrands fitted by one of the previous owners, year 2010 ( thanks David ) Vintage MM, Warman pup, tinted and lacquered, Inductor passive circuit, block inlays, year unknown

Cheers stevie - sounds promising I like Phil's Beyma recommendation . Ok, so a quick check with the diameters and such and see if they'll fit, and if they do, i'll get some and flog the Betas, and faff about with the stuffing and bracing. Will definately take you up on the gracious offer of working out ports size - TVM ! Will get back to this thread when there's something to update you on. Thanks to all contributors for your kind help

Cheers Phil - partly home brew, as they were ex Peavey TX 210, 18 mm ply but with the Beta 10a's fitted, tweeters removed Advice noted. So you think the cab size ( volume ) is not such a problem, (also add stuffing and bracing ) just maybe the port dimension may need attention , when fitting, say, the Beymas ?

[quote name='Dad3353' timestamp='1397837812' post='2427840'] Don't forget that our perception of hearing over the whole frequency spectrum is greatly affected by the volume level. The famous (or notorious..?) 'Loudness' button on hifi amps would boost the lows and highs, so that, at low listening levels, the lack of physiological response of our ears would be compensated. To be removed if one listened at a louder volume; did everyone do that..? I think not. In short, when playing louder, you'll need to reduce the frequency extremes. To set up a 'sound', you'll need to be in 'band' conditions, not alone at home or in the practice room. Hope this helps. [/quote] ^ ^ ^ ^ ^ ^ Head Nail On Hit

[quote name='Bill Fitzmaurice' timestamp='1398721250' post='2437034'] They still are the entry level recommended driver, but the plans are specific in that regard, and note better options. Plus the horn loaded Jack gets quite a bit more out of them than a direct radiating cab will. [/quote] Yup, I peruse the BFM forums too, sporadically, and am aware of your advice re such matters, whether here or there. Perhaps with some luck ( or maybe ' miracle ' would be the right word ) I could find someone selling off 2 Jack 210 cabs without drivers

Good point I thought Emi Beta 10a's were quite popular though, so didnt envisage a problem shifting them on. I actually have 4 of them If i remember correctly, they were one of the BFM choices for Omni 10.5's , of which i've owned 2 of, and a Jack 210 which i owned. I sold the the pair of Omni 10.5's in favour of the Jack 210 bought on here, with the thought that I'd easily find another Jack 210 to partner it, but after a long wait, i never did find another, and didnt like my 15" Peavey partnering the single Jack 210, so got rid of both

JP Stevie Bill - thanks for your input, much appreciated Presumably then, if were to leave the cab specs as they are, I simply cannot mount better X Max drivers, due to cab limitations, or can i mount better drivers if i changed the port dimensions ? I suspect that if i go for better drivers, i'd need better cabs to put them in, which is the worse case scenario for me, financially

Since WinISD is over my head, being a dullard, I need some cab guru advice on cab improvements ( if any - maybe not ) I have a 2x10 with 2 Eminence BETA 10a's , well known here I suspect, but just in case, they're 250 watt 8 ohm, with the pair wired as a 4 ohm cab. Internal cab measurments are 560mm / 22" tall - 360mm / 14" width - 395mm / 15.5" deep Rear firing port is 95mm / 3.75" long and 95mm / 3.75" throat ( parallel , not tapered and no flare ) I'm wondering if another port would improve anything, since i cannot change the cab size. Or am i already getting the best out of it ? Thanks in advance TSP / Specs of the BETA 10a [IMG]http://i62.tinypic.com/214yxdu.jpg[/IMG]

[quote name='Meddle' timestamp='1397163108' post='2421454'] What great mystery is this? The body is from a Vintage V4 "Reissue". The neck is from the Internet (I don't remember the retailer). The most noteworthy bit of this bass is the wee switch below the pickups. It activates a hidden Wilkinson J pickup buried in the body under the 24th fret position. I think the switch brings it in parallel with the main pickup. I bolstered the pickup with extra magnets to try and extend the range of the pickup up to the strings. Dig; http://www.youtube.com/watch?v=7IcTOnIfmOY I''m planning to repeat the exercise with a Warman Dominator pickup on a new project bass. [/quote] Whats the thinking behind sticking a 6 string leccy guitar pup in a bass ?

My Modcore eventually turned up. Brilliant and only £22

Oh yeah, it takes a normal 9v boss supply too, and does stereo if you like that sort of thing