HAMNETT'S VINTAGE HIFI ARE PROUD TO PRESENT

LINN ISOBARIK ACTIVE CROSS OVER - RESTORATION AND UPGRADES


AN IMMACULATE AND CLASSIC EXAMPLE OF AN ULTRA RARE ICON.
THE NAIM NAXO 3/6 CHROME BUMPER
SORRY - SOLD !
Some say this is the sweetest sounding active cross over for the Isobariks.
Speakers2

Call 07957 203 218
or +44 (0) 1772 253 017
if outside the United Kingdom
ANY TIME

ALL TYPES OF
NAIM AND LINN ACTIVE AKTIV CROSSOVERS ALWAYS AVAILABLE ! CONTACT ME FOR DETAILS
simonhamnett1@btinternet.com
If you have items/crossovers to sell I'm always interested.


LINN ISOBARIK  NAIM NAXO SNAXO 3/6  SNAXO 362 RESTORATION AND UPGRADE  SERVICE 


Isobarik Active cross overs wanted. Please contact me if you have Isobariks or Crossover equipment you wish discuss. Thank you !

LINN AND NAIM CROSS OVERS ALWAYS WANTED - ANYTHING CONSIDERED - CASH WAITING


FREE HIFI ADVISE AND INFORMATION ANY TIME. CALL ME ANY TIME ON UK NUMBER 07957 203 218 ANY TIME We are ALWAYS OPEN 24 Hour Service ! Overseas clients always welcome.
We send Bricks all over the world ! Custom safe insured shipping to all points on the globe a specialty. Inquire for details
 
45 YEARS EXPERIENCE IN WORKING WITH HIFI


Call or text 07957 203 218 any time and I'll call you back.

CALL ANY TIME

30uu4ja



Quote from a Hifi forum : Two weeks ago I had the possibility to hear the Isobariks for the first time. Powered by 6 x CB135s, NAXO, 52 and CDS.
Best musical experience ever, a dream !

Customer testimonial :

Hi Simon

Although I haven’t spent as much time as I would have liked listening over the weekend, I have spent enough to get a feel for what you have achieved with the modification work.

I am quite amazed by the transformation in the overall sense of realism and depth of field. As I said to you the other day, there aren’t many live albums that can be faithfully reproduced at home and give you the sense of ‘being there’. But the ‘Bruce Hornsby and the Noise Makers’ album is a fantastic piece of work and deserves playing on equipment that can do it justice. I think my system does that, thanks in no small way to the improved Isobariks.

I have worked through one or two of my usual test CDs… music I really enjoy, recorded with the attention to detail that lets them breath properly when played. If these discs work then the system works, essentially.

I can only say that I am closer to the level I want to reach than at any time in my Hi-fi journey. I’ve had some pretty decent kit over the years… Krell amps, Martin Logan ‘speakers, Copland CD players, Nottingham Analogue record deck… so I am familiar with what works for me and what doesn’t.

The current set up is very close to complete now. I think the power supply improvements we talked about with Shaun, the balanced cables and a third KSA will make things better without detracting from what is there already. One step at a time though, I think.

In conclusion, I would say to anyone who has a pair of old (and perhaps tired) Isobariks that would love to breathe new life into them… check out Simon Hamnett’s work.

From where I sit (and listen) he knows how to take the ‘speaker on to new levels without taking away the essence of what the original Isobarik does. The work done on my pair has transformed my listening experience to the point where I believe and enjoy what I’m hearing again, instead of wishing that certain elements of the performance were better.

I’m not easily pleased (or impressed) by Hi-fi but I am incredibly happy with what has come out this exercise.

To all those skeptical people who like to speculate on how good or appropriate or effective Simon’s work is, largely without listening I might add, I would say you need to accept that the world of Hi-fi has moved on and taken the Isobariks with it thankfully.

Thanks for an excellent job, Simon

With Best Regards

Name an address supplied


Please ask about Fully Serviced and/or Upgraded Naim Amplification for your Isobariks - Best prices !


Hello kind clients, thank you for your interest and inquiries.
Available we have a service to repair restore and upgrade Linn Isobariks of any type ( Passive or Active PMS/DMS ).

Buy it now price is for a full Mid range unit upgrade. Contact me first for details. Isobariks not included !

Call or text 07957 203 218 and I'll call you back.

Free home demonstration using your own equipment - Contact  for details.

Fast safe insured World Wide Shipping Available - Contact for details

The upgrade combinations and possibilities are quite vast. We can supply them all.
We can repair, restore the cabinets or upgrade ANY configuration of Isobarik set up you require.
.
If you would like an immaculate used pair of original Linn Isobariks with excellent drivers – we can supply.

If you would like a virtually new pair of Linn Isobariks with ALL BRAND NEW DRIVERS. We can supply.
 ( Whilst stocks last only 1 set of drivers left. )
If you want a fully modified pair of Briks we can offer that too.
If you want something in-between we can do that too.
We can offer amplification and Active crossovers should you need them too.
If you want Isobarik we can do it.
If you’d like to come to our factory to see your Briks built, you are more than welcome. We are based near Preston Lancashire Great Britain.
What would you like ?
Many thanks for your enquiry, and kindest regards

Call or text 07957 203 218 and I'll call you back.

The real Isobarik - Genuinely 'remastered'


Premium Tweeter upgrade service including all units and hard ware - Replace all four tweeters with Premium ScanSpeak tweeters, rout cabinets to new specification £730 including tweeters.
This second stage conversion completely transforms the performance of the Isobarik in hi frequency spectrum allowing the rendition to match the very best of hi end loudspeakers available today. Ultimate upgrades using the very best ScanSpeak tweeters, are available, POA depending on tweeter choice.

Mid range upgrade service including all units and hard ware - Replace all four Midrange with upgrade Scaspeak units, rout cabinets to new specification -From £1450. An ideal first stage conversion really opens out the mid range of the Isobarik - allowing you to hear detail that the ancient old
tired out B110 mid unit could never resolve. - The Night and Day conversion ! As one client described the upgrade.


Budget upgrade mid range above, special order special order only.


Upgrade above to special order only.
Ultimate Mid range upgrade service including all units and hard ware - Replace all four Midrange units with ultimate upgrade Scanspeak mid range units, rout cabinets to new specification - POA - Mid range performance comparable with the finest available


Cabinet routing only for above units, 4 apertures routed - Routing only, no units supplied
Price on application or see other eBay adverts.
 


Bass unit upgrade to Keltic spec - £ 1700 - Powerful Bass Keltik style

ULTIMATE TDL Bass unit upgrade - POA. - Ultimate fast precise bass - The best !

Total refinishing of cabinets or re-veneer to ANY specification prices from £1000.

Total restoration, Ultimate Upgrade and cabinet re veneer up to £6000 depending on finishes required.

Cloth speaker grills set of 4 from £250

Original Spec Foam grills  £185

Stands - From £350

Fill in Panels - From £400

Cross overs From £385 depending on spec.

Passive Crossover rebuilds. From £950 exchange

Active Crossovers from POA. LINN, NAIM PASSIVE/ACTIVE ALL AVAILABLE.

Call or text 07957 203 218 and I'll call you back for price queries.

Split Brik Conversions. From £295 including cable and connectors. - Use two Mono blocks or one stereo amplifier to drive each of your Isobariks more effectively - greatly increased dynamic headroom and power. I recommend all owners of earlier Isobariks to consider this simple upgrade.  An excellent cost effective conversion ( depends on model ). Briks allow many different connection configurations, contact me for more details. Also externalisation of the cross overs can bring corresponding cost effective improvements in performance.

 Cross over externalisation.
View Full Size Image
Only one speaker shown in schematic

'Split Biks' Schematic Tim Danaher.


Bespoke speaker cabinet manufacture to the very highest standards contact me for details.

All of above Via ebay Buy It Now - Contact me for details.

Simon Hamnett – 07957 203 218
Brik restoration and Upgrades.

ISOBARIKS WANTED ! BEST PRICES PAID! CASH WAITING ! NEXT DAY COLLECTION 7 DAYS A WEEK.



Call Or Text 07957 203 218



OVERSEAS BIDDERS - PLEASE CONTACT ME REGARDING SHIPPING ***FIRST***. A PAIR OF BRIKS WEIGHS 130Kg AND IS SHIPPED IN FOUR LARGE PACKING CASES - SEE PICTURE. PLEASE UNDERSTAND THAT POSTAGE AND PACKING CAN BE EXPENSIVE. I ALSO CAN NOT SHIP TO SOME COUNTRIES. CONTACT ME FIRST FOR DETAILS. THANKS :-)

I do buy audio equipment.

Call me on 07957 203 218 with any queries.


  • Anyone who knows Briks knows that they are a fantastic bargain at the moment, and a neglected pair can be picked up at very reasonable prices.
  • When properly set up and driven adequately THE *ORIGINAL* LINN ISOBARIKS easily trounce speaker systems costing many many thousands of pounds more  

  • Not convinced? - Try in your own home for free, if you feel your speakers are better than my Briks, you will be be under no obligations AT ALL, and I'll buy a pair of your speakers for myself. But, I have no fears I'll be buying anything but Bricks in the future ! My Bricks WILL beat ANY Speaker in ALL/ANY aspects of performance at the price point of up to £10,000 and beyond - SIMPLE FACT ! - Try them ! If you don't like my Bricks, you'll owe me nothing. I challenge you now ! :-)

  • Call me on 07957 203218
  • I'll call you back for free - world wide.
  • Totally Free No Obligation Home demonstartion in the uk ( Contact me for the world wide service ).

  • Better Bass - The Best Isobarik Bass you'll ever hear.
  • Better Mid range from the finest state of the art Scanspeak drive units available today.
  • Sweet Treble from legendary Scanspeak drivers
  • Better imagery, stunning full size sound stage rendition. Feel the music !
  • Better Dynamics - unmatched cone area at the price point.
  • THE BEST IN THE WORLD FROM £2000 to £10,000
  • TAKE THE CHALLENGE !

Four myths busted !

  • Myth one : Linn Isobariks sound coloured. Or more precisely suffer from colouration. ( Over emphasis of certain frequencies )

Yes they do !

Standard late model passive Isobariks even when driven properly; and,.. you do need some very serious amplification to drive Briks properly, do sound very warm, smooth, and easy on the ear. This is due in part ( Ivor was trying to hide Sondek inadequacies ! ) to the standard five different types of passive crossover network, and the standard tweeters. But mostly this is because of the very poor quality of the Kef B110 Mid range driver. I can hear owners of that other little speaker with big reputation; the LS3 5A - gasping with horror. I apologise, but it is a simple fact that the B110 is not the best mid driver in the world ( certainly not anymore it’s not, and not 40 years ago either ! ) and when upgraded in the Linn Isobarik cylindrical midrange enclosure ( similar the JR 149 ), huge improvements can made over the standard Kef B110. Time and again customers phone me to say how pleased they are with this modification. The B110 is long dead (has been since about 1979 actually) - It really is time to get over it chaps - sorry. And yes ! - The original designers at Falcon have re manufactured a very excellent brand new B110 now, and yes, it does sound very nice. But in reality the warm coloured characteristic sound of the New/Old B110 is exactly that - a Characteristic sound.  Not an OPEN and accurate rendition of the original sound - This is what the Kevlar/Carbon upgrade offers you. Try it and hear for yourself in your own home. I'm very happy to supply the new Falcon B110 should you require. Falcons new B110 is THE BEST B110 your money can buy. However, our ears tell us there are stunning improvements to me made, should you, dear client, desire this to be!

The excellent upgrade we favour is the Monaocor Kevlar cone mid range driver with phase plug or 'Plain Carbon fibre Black'. This major ‘night and day’ ( as one client called it ) upgrade requires  cabinet modification, and for a completely professional factory fresh perfect look, these units are fitted by our cabinet craftsman. Other B110 footprint units are available so please inquire so that we can find just the right mid unit for your needs and budget. Carbon fiber cone drivers in black are also available for the more traditional B110 look. You chose. Ultimate Scan speak mid range conversion also available. Please just ask for full details.

Like wise the standard tweeter drive units from Scanspeak and Hiquphon can be upgraded with outstanding results. Our favorites are from the Scanspeak Revalator range. The vastly improved the “top end” you require is finally here for you to - 'hear' for yourself. This modification may or may not require modification of the Crossover Network. Again the choice is yours ! This is of course is far easier to do when your Briks are driven actively as they should be - it's not that expensive. The sweetness of treble from a one inch soft dome Scanspeak has to heard to be believed. No one has as yet requested they go back to their old tweeters. Which are also available should you need them of course.

  • Myth two : Isobariks provide very poor stereo imaging. The driver arrangement is poor.

This statement comes up again and again on the forums. It makes us really quite angry. It is simply just not true, Briks can, when set up and driven correctly, in full active mode, with the right crossover and CORRECT cross over power supply, provide quite stunning holographic imagery. Better than ALL other speakers I’ve ever listened too. If I’d heard better speaker I’d have bought them! Imaging is the active Linn Isobarik strong point. The fact is people have never really heard a properly set up pair of Briks. They are a rare and exotic beast of a speaker, and up until recently very expensive ! – But now as second hand prices fall, it is possible to build a full active Brik system for a fraction of cost of what it would have been the old days.

  • Myth three : Isobariks have a very strong articulate bass response.

This myth is very true ! Quite frankly – It’s the best bass you’ll ever hear ! However upgrading the Kef B139 isobarically loaded drive units yields even better results. Unfortunately the “race track” B139 footprint versions by other other manufactures are very difficult to source. We favour the Elac unit used in the past by IMF/TDL, but as I say, these are difficult to obtain second hand. The next best is the Keltic bass unit available from Linn. These are expensive, but are an improvement in terms of attack and slam over the standard B139 units due to the Keltik bass units lightweight cones and extra sensitivity. If anyone knows of better bass than Isobarik bass PLEASE  TELL ME ! And please keep all your transmission lines, no matter how big. Clearly you've not heard properly set up Isobarik four pack bass. Infra bass like you've never listened to before. We are talking seriously powerful, articulate, precise, perfect bass - like you have only dreamed of in the past. Not convinced ? Try them for free in your own home. If you have better bass I'll buy your speakers and you'll owe me nothing.


  • Myth four : Wives, girlfriends and partners hate them.

Our wives love them, listen to them all the time, either whilst feeding the baby or just in the evening and weekends after a hard days work for some very serious relaxation. They can be tastefully integrated into most rooms, and room size is irrelevant. We have installed Briks in a room ten feet by ten feet square, and that system could literally blow the listener away ! The key, as I hope you have gathered is correct setup.

Above Scanspeak Tweeter and Carbon fiber mid Bi amped with Twin Krell KSA 100s
  • The System of you dreams is now within your grasp! 

  • FULL TWELVE PACK BRICK SYSTEMS FOR AS LITTLE AS £2000 Excluding SNAXO, £3000 INCLUDING SNAXO, INQUIRE FOR DETAILS.

  • Bespoke Linn Isobarik and Keltik full restoration and upgrades. Carried by experienced French polishers and cabinet craftsman to restore you Active / Passive Isobariks or Keltiks to their former glory and far beyond.

  • Drive unit upgrades according to budget and specification required. From basic replacement of units to full house upgrades using the finest drive units available including amongst others Scan Speak, Monacor, ATC and of course Linn.

  • Any finish and and drive unit combination is theoretically possible but there are many straight forward replacement drivers that will fit the original driver footprint, yielding instant improvements in sound reproduction over the standard and often tired drivers.

  • Isobarik and Keltic spares from stock or we can source them for you. Cross overs and stands also available FROM STOCK.

  • If its Isobarik or Keltik we can do it.

  • Bricks and Keltiks in stock and for sale at competitive prices. Inquire for details.

  • Pick up and delivery available. Pick up and delivery country wide at cost.

  • Room installation and set up. Grills and original specification foam covers to order.

  • All advice regarding amplification and active crossover set up. Snaxo, Naxo, Six pack or TWELVE PACK a specialty !

Actual customer full 12 Pack full Active Naim system using 6 Fully serviced and restored Naim Nap 250s Power Amplifiers.

Please don't hesitate, feel free to contact me for further pictures and information, including full details regarding this now legendary bespoke super system. Call or text 07957 203 218 and I'll call you back.

Bespoke System Spec : uses Custom Hifi Cables Upgraded Naim Hicaps. Avondale Audio Fully upgraded Naim Nac 32.5. Custom Hifi Cables interconnects

Each drive unit is hyper accurately precision driven by it's own single dedicated fully regulated Naim power amplifier board. I believe this is one of the few Naim Nap 250 twelve packs in existence. Effortless power and unmatched control ! Offering twice the control of a Nap 135 six pack !

Using 12 Naim Nap 135s is also an option. Contact me for full details - and following your precise specifications, why not commission the world beating system of your dreams ?

  • International shipping in our own super safe lightweight shipping crates.

  • Exchange service where by you audition the speakers you want in your own home and keep our loan Briks whilst yours are restored/modified. Retaining complete peace of mind.

  • Please contact us via Ebay mail for further information, even if it's just to talk Briks ! :-)

  • OR PLEASE CONTACT US ON 07957 203 218 Should you require any further information.

Brick Restorations and Upgrades. Many thanks for your interest and Kindest regards.

WORLD WIDE SHIPPING AT COST - VERY BEST NON PROFIT RATES

FREE WORLD WIDE SHIPPING ON SOME ORDERS !!!! Inquire for details....

Custom made packing cases for safe insured dispatch to all points on the globe. Overseas customers always welcome. Shipping Linn Isobariks to all destinations world wide. We have Shipped Isobariks and components to GB, Europe, USA, The Far East, South America and Australia. Shipping to the USA from £450. All other destination available at best competitive rates. Shipping can be less than you'd think !




Hamnett's Vintage Hifi Ltd

simonhamnett1@btinternet.com

07957 203 218

Are proud to present
an EXAMPLE NAIM CROSS OVER


A GENUINE 
NAIM AUDIO  NAXO 3/6
For ORIGINAL AND BEST LINN ISOBARIK
- IN CHROME BUMPER
SOLD !





 


Genuine Original Naim NAXO 3/6 for the original and best Linn Isobarik loud speakers.


simonhamnett1@btinternet.com

07957 203 218



Near Mint condition.



FREE SET UP AND DELIVERY IN MAINLAND UK !


#Happy to set up for free world wide plus expenses.


ALL WORK Guaranteed 1 year.

simonhamnett1@btinternet.com

07957 203 218




I can supply all required leads for this Cross over.
Either original Naim, or Upgraded . For ANY applications please just ask for details.

Many eBay adverts speak of an items rarity.
I have been working with and dealing in Linn Isobariks since before 1990.
In nearly 30 years I've only ever seen four Naim Naxo 3/6s for Isobariks actually in the flesh. That means I can get my hands on a NAXO 3/6 in about once every seven and half years. This is your lucky chance to grab a genuine Chrome Bumper Naxo.
I've never seen one as clean as this, it's beautiful, no question..

If you can find another immaculate comparable beautiful condition fully boxed Chrome Bumper Genuine NAIM NAXO complete.
Available anywhere on this planet
LET ME KNOW !


I'd have be very happy to keep this one for my collection !
 But I had the right offer and the new lucky owner became the next custodian of this iconic piece of genuine Naim inspiration. I can't keep it all !

It will be an appreciating investment.
Don't  believe me ?
- You only have to look at whats happened to boxed original mint condition Naim gear prices in the last 10 years.
They only ever go up. 

A note regarding Naim Chrome bumper gear.
In my opinion CB gear with it's classic retro appeal is by far the most attractive gear Naim constructed. It's exceptionally well made, quiet stunning. Of course the era was over seen by late great Julian Vereker himself. The original and the best. Couple this with a six pack of CB 135s 0r Three CB 250s and you'll be in audio Nirvana.
Guaranteed or your money back.

Don't be fooled into believing the olive or later gear is better.
It's not !  Chrome gear is becoming even more sought after.
Happy to demonstrate this to anyone who would like to listen.

Chrome Bumper era equipment represents the best Naim Ever made during their hey day under Julian.
 Now under French firm 'Focal' I feel... well - Look and listen for yourself.

How does a Naxo sound compared to the later Olive Snaxo ?
Good question, there is absolutely no doubt that many Brik owner favour the sweetness of the NAXO over the SNAXO.

Some owners go back to the Naxo from the Snaxo
Not convinced ? Please feel free and by all means check out the forums for yourself to see if I'm right ??

I offer a buy back scheme on all equipment I work with.
You've nothing to lose.


EXAMPLE PICTURE ONLY - SYSTEM NOT INCLUDED.
 CB NAXO TOP LEFT.



Ok, any questions please just ask -


Many thanks for your interest.




STANDARD ISOBARIK SPECIFICATION AND  INFORMATION

The Isobarik loudspeaker was originally available in two types: DMS (domestic monitor speaker)
and PMS (Professional Monitor Speaker). The main difference between the two was the
crossover: DMS were fitted with an internal passive crossover, whereas PMS had no crossover
at all, and instead used an external Active crossover.

DMS were discontinued in 1988 due to the introduction of an external passive crossover. This
improved passive performance and allowed very easy upgrade to Active.

Each speaker has two of each drive unit fitted – i.e. two bass, two mid and two treble. The
second bass unit is hidden inside the cabinet, behind the visible bass unit and this forms the
basis for our patented Isobarik equal-pressure bass system. This means that the front speaker
behaves as if it is in a much bigger enclosure.

Introduced: 1973
Ceased Production: 1992

Size: W 343mm x D 416mm x H 760mm

Stand height: 230mm (not including spikes)

Weight: 43Kg
Type: 3-Way Infinite Baffle
Frequency Response: 25Hz-20kHz +/-3dB
Minimum impedance: 3.7ohms (4 ohm crossover)
Efficiency: 86dB for 1 watt at 1 metre (1KHz)
Crossover points: 375Hz & 3KHz
Power handling: 100watts music
Aktiv/Passive: Both
Tri-wireable? Yes
Drive units: Treble -- 2 x 19mm soft-dome tweeter
Mid -- 2 x B110 (specially modified)
Bass -- 2 x B139 (specially modified)
Cabinet Loading: Infinite baffle
Early Isobariks were fitted with a 3-pin XLR (cannon) socket



Please send me your ***email address*** and I will explain all about the complex science of fully active audio systems. Covering topics such as : Amplification. Active filters. Pre Amplification. Source. Cabling. Connection options. Power supplies Etc etc. AND ISOBARIC PRINCIPLES.

Many thanks for your interest and Kindest regards.

Simon