Balcro

Ahh! Happy Days! I had a G18 C. 100w Green Back in a home built cabinet. I gave it away to a fellow Basschatter. It sat in my den for over 30 years and was rarely used. I bought it from Tottenham Court Road, probably from Lasky's. Around about 1966/67, I carried it home by hand (in it's big box) on the underground, bus and pavement to Hornchurch. Even after all this time my arms have never regained their original length! That circular wood plate or a piece of 4 x 4 was the stabdard way to brace the loudspeaker and the rear panel. Check out the "Recommended Amp Techs" part of the forum under the "Repairs and Technical" sub-forum. Best of Luck.

Next time I'll remember the size. Earlier remarks based upon the readily available 100mm ports.

From a quick look at other 10" drivers, only Faital-Pro seem to offer a 4 Ohm variant. I checked out another 4 drivers in total; the Pulse 10, a Fane Sovereign 10-300-2, a Beyma 10 300WRS and the 4 ohm Faital-Pro 10 PR 310. None as 2x10's are drop-in good matches to a 100L cab in respect of an indication of "heavy breathing", requiring 3 ports to control very high rear port air velocity. If that extra work is something the OP can consider, then the Fane or the Beyma are probably the best balanced. The Fane is £77.0 from Blue Aran. The Beyma 10 300WRS is £75.0. Other contributors may assess my comments about the high rear port velocity and decide whether that alone is or is not a deal breaker.

Hello P.T winISD calculations:- Using data from a 2021 spec 12 CMV2 (now replaced by 12 CMV3) your volume calculation of 49.98 for the box and allowing for the volume of the drive and port you should get a net volume of 47 litres. The "fs" for the driver is 49.30Hz. With that you select one vent that is exactly 10cm internal diameter. The vent length will be 12.68cm. With a 100w input the winISD calculation is for an output of up to 116dBa at around 115HZ. Not a bad match at all. If you decide upon two 8.20cm diameter ports (as per the options in winISD) vent length is 20.9cm. It all depends upon the space you have for 1 or 2 ports on the front baffle and or what ports you can buy.

That middly clank sound you mention is perfect for a Rickenbaker. Very little extended low bass but the low , low middle & middle is immense. Flat they're not but who cares! The clue is in that graphic equaliser - it stops at 2000 Hz!! Do you need anymore? Nah. May you and "the beast" have a long and loud partnership. From the Celestion G18C guy.

The thought behind it is probably an alternative but feeble way of keeping noise levels down. The thinking (sic) being that 2 or 3 players will make less noise than a standard 4 piece rock group. It's possible that in the distant past the L.A had a few problems with noise levels affecting local residents. Rather than going into the technicalities of setting decibel levels (usually with the wrong weighting) and worrying about the meaning & precision of " inaudibility" in a notice, the LA settled for this second rate form of control. Maybe when the Licensing Act was introduced the LA didn't have anyone on the staff who was sufficiently technical to set dB levels.

I didn't "get" them all at once. Lots of long delayed appreciation for Jack Bruce, Lonnie Turner and Garry Thain. Teenage years :- Harvey Brooks (Supersession) & Peter Overend Watts.

APOLOGIES TO TRBBoy and Phil Starr:- In my earlier text I transposed the colours for the two drivers. It is the Faital that is the MAUVE line, the LaVoce is ORANGE. Regards, Balcro.

The results are in! Based upon the OP's supplied internal dimensions, the Faital and the LaVoce are very close. WinISD calculates the net volume as 59.80 litres and with those two ports, the tuning is 60.06Hz. LaVoce is mauve line, the Faital is orange. Input power 180W. Both are very loud. See graphs for transfer function, power handling and cone excursion. Faital Pro 400 neo £179.

Hello TRBboy, It looks as if Bill Fitzmaurice has found a really useful speaker. The LAVOCE is £120 from bluearan.co.uk. Precise measurements of internal cabinet volume, internal port width and port length are needed from you. Then the speaker modellers on here can get to grips with showing you what you could get for your money.

Excellent refurb. Well done.

OP. Why not try here? Promising? https://hartke.zendesk.com/hc/en-us/articles/360045666093-Hartke-Service-Centers I spoke too soon. "We no longer offer recone kits. You can order replacement speakers for your Hartke product by contacting Customer support at [email protected] . "

Tjohnlee, If all else fails, and even hartke.com can't help, except at extortionate price, then there is still a way to put the cab back to good health. However, do not forget the wise words from Phil Starr - "Any replacement speaker is not going to sound like the Hartke original, even if they are a good match for the cab the midrange which gives most of the character will be entirely different". There are some well matched speakers with a good tonal balance and with an upper frequency response that appears to extend beyond the Hartke original, which will produce a good result. I don't think you'll find them lacking in punch. Before we can give you further advice we need your co-operation to provide some measurements. 1. The internal height, width & depth measurements of the cabinet. 2. The width and height of the slot port. 3. The depth of the top panel to the slot port, measured from the outside. 4. Inches are fine. We can do the conversions.

https://www.theregister.com/2023/12/04/kiss_are_now_immortal/?td=rt-3a

If you are genuinely in Freetown, Sierra Leone then you need to contact a Korg Distributor for Parts and Service. If Freetown is a euphemism, then try here:- https://www.korg.co.uk/pages/repairs