Do you imagine Linn invented a new material?
One for the Isobarik Experts
- Thread starter Richard Lines
- Start date
Do you imagine Linn invented a new material?
Richard Lines
pfm Member
I believe that the all three drivers i.e. Keltic, TDL and IMF have a 'superior' bass performance on paper and all are used by Simon Hamnett. My intention is to try them all (if I can source them) and, if I feel they don't offer a sonic improvement, there is a ready market for selling them on.
I probably need to add the 'new' B139's to the test process as well.
Regards
Richard
david ellwood
Kirabosi Kognoscente
The rear 139 is a bitch to get out.
And then some........
Richard Lines
pfm Member
Good Afternoon All,
That's 4off Linn Keltic bass units sourced now..........
Regards
Richard
That's 4off Linn Keltic bass units sourced now..........
Regards
Richard
david ellwood
Kirabosi Kognoscente
Did you get the rear 139 out yet?
Richard Lines
pfm Member
David,
No I haven't set my mind to it yet and nor have I really tackled the issue of machining these cabinets for the Scan-speak drivers.
Regards
Richard
No I haven't set my mind to it yet and nor have I really tackled the issue of machining these cabinets for the Scan-speak drivers.
Regards
Richard
Richard Lines
pfm Member
David et al,
Today I decided to get on with removing all drive units, gaskets, fixings etc. from the late model Isobariks.
OK so now I can see the challenge. Some comedian at the Linn factory thought it would be a good wheeze to install the rear bass driver and then glue in the Kustone blocks...............
I haven't forced anything yet but clearly in my limited efforts so far the speaker keeps coming into contact with one (or more) of the Kustone blocks - anyone been down this road and found a non-damaging method?
Worst case would possibly involve deliberate partial destruction of an in-situ block. I have no idea how possible it is to remove the already modified blocks off the back of the B110 units.........
Extra edit - just found foam blocks lurking.....
Regards
Richard
david ellwood
Kirabosi Kognoscente
I managed to find a route past by pushing the b139 right into the far corner of the cavity allowing the other end to be clear of the kustone. but its tight.
Richard Lines
pfm Member
David,
OK I'll have a look when it's a little cooler and bit less muggy so frustration doesn't creep in (well at least too early) ..............
Regards
Richard
OK I'll have a look when it's a little cooler and bit less muggy so frustration doesn't creep in (well at least too early) ..............
Regards
Richard
Richard Lines
pfm Member
David,
Couldn't resist having a look before heading outside and with just a little bit of wriggling the unit has come out to reveal three bits of Kustone lurking in the back cavity............
Now to focus on sorting the woodworking required.
Regards
Richard
Couldn't resist having a look before heading outside and with just a little bit of wriggling the unit has come out to reveal three bits of Kustone lurking in the back cavity............
Now to focus on sorting the woodworking required.
Regards
Richard
david ellwood
Kirabosi Kognoscente
Well done! especially in this weather..
Richard Lines
pfm Member
David,
I noted that the soft foam seals for the bass units still got a dollop of sealant on them..........., not what I was expecting from previously posted comments.
Regards
Richard
I noted that the soft foam seals for the bass units still got a dollop of sealant on them..........., not what I was expecting from previously posted comments.
Regards
Richard
david ellwood
Kirabosi Kognoscente
That’s just to keep them in place whilst fitting
mine were the same (just a few small blobs)
mine were the same (just a few small blobs)
Richard Lines
pfm Member
Good Evening All,
That's the rear B139 out of the second cabinet. It was more challenging than the first as one Kustone block is more then a little askew.......... some gentle shaving was required.
Have now removed the Scan-speak units from the other, already modified Isobariks.
This evening I have noticed an ink stamp inside the isobaric enclosure 'Greaves of Sheffield'. I thought that when the cabinet making was outsourced it went to Leon Levin of Glasgow but wasn't aware it changed yet again?
Could be dropping off the cabinets and drivers to a local outfit on Monday.
I wasn't overly impressed with what I found under the midrange units:-
Externally the rebate looks reasonably tidy work but what lies underneath is untidy to say the least. All the Scan-speak drivers are secured with six fixings and, in this case, at least one was loose in five of the eight. The units are secured using Allen headed drive screws. I guess such things are OK but I would prefer some form of captive fitting personally.
Regards
Richard
That's the rear B139 out of the second cabinet. It was more challenging than the first as one Kustone block is more then a little askew.......... some gentle shaving was required.
Have now removed the Scan-speak units from the other, already modified Isobariks.
This evening I have noticed an ink stamp inside the isobaric enclosure 'Greaves of Sheffield'. I thought that when the cabinet making was outsourced it went to Leon Levin of Glasgow but wasn't aware it changed yet again?
Could be dropping off the cabinets and drivers to a local outfit on Monday.
I wasn't overly impressed with what I found under the midrange units:-
Externally the rebate looks reasonably tidy work but what lies underneath is untidy to say the least. All the Scan-speak drivers are secured with six fixings and, in this case, at least one was loose in five of the eight. The units are secured using Allen headed drive screws. I guess such things are OK but I would prefer some form of captive fitting personally.
Regards
Richard
david ellwood
Kirabosi Kognoscente
That driver is just physically too big to be properly fitted. I’d be worried that the butcher that did this had compromised the air tightness of the mid enclosure.
Richard Lines
pfm Member
David et al,
These cabinets are scrap anyway now as I doubt anybody could use them so they'll be away to the wood skip at the recycling centre on Thursday........, just got to wrestle the rear B139's out.....
I'll be posting some of the drivers for sale shortly. I intend keeping the original B139's back in case the alternate drivers don't work out.
I'm going to be delivering the cabinets to the cabinetmaker 0930 Monday morning and will be speaking with both the boss and the man who will be doing the work. The above pictures will be to hand........
Regards
Richard
These cabinets are scrap anyway now as I doubt anybody could use them so they'll be away to the wood skip at the recycling centre on Thursday........, just got to wrestle the rear B139's out.....
I'll be posting some of the drivers for sale shortly. I intend keeping the original B139's back in case the alternate drivers don't work out.
I'm going to be delivering the cabinets to the cabinetmaker 0930 Monday morning and will be speaking with both the boss and the man who will be doing the work. The above pictures will be to hand........
Regards
Richard
Richard Lines
pfm Member
Good Afternoon All,
Well that's the rear B139's out of the donor Isobariks. This is a handy tool:-
This is the donor and Kustone pair of Isobariks being worked on:-
First reserves whilst main pair away:-
Second reserves:-
Aided by my long suffering wife, Kate, we'll load the Kustone Isobariks in to the Skoda this afternoon.
Regards
Richard
Well that's the rear B139's out of the donor Isobariks. This is a handy tool:-
This is the donor and Kustone pair of Isobariks being worked on:-
First reserves whilst main pair away:-
Second reserves:-
Aided by my long suffering wife, Kate, we'll load the Kustone Isobariks in to the Skoda this afternoon.
Regards
Richard
dave charlton
pfm member
+1