eBay

A high power handling 5¼" driver that offers a truly smooth response and is a good upgrade or replacement for the famous KEF B110 and similar bass/mid speakers

Ideal for a modern closed box LS3/5A type speaker project and especially good as a near field monitor

Highly regarded in Europe & Japan

Lowest £55.50 delivered UK price on eBay!

I do not drop ship or buy product in only after your purchase: every speaker is in stock and each one will also be tested before I despatch it


This offer is for just one off (1) brand new, boxed example of these great little drivers, which show excellent linearity and an extremely flat, smooth frequency response all the way from 120Hz to 10KHz, (scroll right down and take a look at the actual frequency response plot below).
In fact the response is so good that it can be regarded as a single point (full range) driver or used in conjunction with a silk dome or ribbon tweeter and a simple crossover at about 8-10KHz, so avoiding the usual 3-4KHz crossover region where are ears are so critical.

Thus this driver is a very good candidate for anyone considering a modern take on the famous BBC LS3/5A type of small box speaker as it does not have the 8 Ohm KEF B110's huge 10-12dB resonant peaks at 1.5 & 1.9KHz, the taming of which caused so much trouble with all the crossover designs that used it, (needing special electrical damping networks and a loss of efficiency and sound clarity - the improved 6 Ohm B110C/SP2128 for the later LS3/5A versions was quality controlled, tested and matched in pairs by KEF, so is better, but it still had a 6dB hump in it's response!)

Designs based upon this modern driver will have reduced harmonic distortion because of:
a) the Kevlar cone which produces a smooth, non-resonant response right up to 10KHz!
b) a phase equalising central plug adding stability to the sound field

Power handling increases and power compression decreases because:
a) the coil is open to the air at the front, (see the picture below)
b) it has a larger diameter coil at 35.5mm vs 25.4mm, with about 50% more copper than a B110


This is a real opportunity for those who want to build a modern high output, high power handling compact monitoring speaker in the style of the famous BBC design or to upgrade or just replace a blown (pair of) driver(s) in an old design speaker such as an original Rogers, Chartwell, Spendor, Stirling, RAM or other make of BBC licensed LS3/5a or spin-offs such as the JR 149, KEF Concerto & Cresta, Linn Kan or DIY kits such as KEF's own CS1.

Closed box enclosures as small as only 10 litres can be used.

Specifications

Power handling - 40 w RMS, 80 w max.

Operational frequency range - 45 Hz to 10 KHz, (1w/1m SPL of 88dB ±3dB from 110Hz-11KHz)

Free air resonance - 45 Hz

Impedance - 8 Ohms

Woven Kevlar cone eliminates cone resonances, giving exceptional smoothness and linearity over the whole frequency range

Kapton coil former with an edge wound copper plated aluminium wire voice coil

Sensitivity - 88 dB @ 1w @ 1m @ 1Khz

Weight 1.5 Kg

Size - 133x133 dia x 75 d mm overall, (5.25" dia x 3" d); depth from rear of flange - 118 mm, (4.65")

Mounting hole cut-out - 122 mm dia.

Connection via spade connectors

Thiele-Small Parameters:

fs - 45 Hz

Cms - 1.23 mm/N

Mms - 10 g

Qms - 5.54

Qes - 0.32

Qts - 0.30

Vas - 15.5 L

Re - 6.0 Ohms

BxL - 7.5 Tm

Le - 0.75 mH

Xmax - ±3.25 mm (maximum linear cone excursion range)

Xpeak - ±8 mm (maximum allowable cone excursion)

Sd - 95 sq.cm

Construction - powder coated, die-cast aluminium construction, attached via four 4.5mm diameter holes in the front plate on a 99mm hole to hole spacing, (a 141 mm PCD).

SPECIAL NOTE: (If using this to replace or upgrade an old driver) - this speaker has a mounting hole spacing of 99.0mm (a pcd of 141.3mm) so please check your original driver's hole spacing for compatability before purchasing.
For example, the KEF B110A & B110B have hole to hole spacing of 95mm, so it would not directly match to any original threaded inserts in an enclosure's baffle that was fitted with a B110, for example, front of baffle mounted as in the Linn Kan 1, or rear of baffle mounted as in the LS3/5A and most the early clones that used the B110, but it is
still possible to fit them simply by rotating the driver slightly and using wood screws!

I have provided large images of this driver as well as the detailed response plot and the mechanical dimensions; please scroll right down to view them......

BUYER'S NOTE: Please wait for your eBay invoice to arrive before paying, to avoid errors and delay in despatch

SHIPPING COSTS:

UK: Collection in person is fine, or I will ship the speaker via Royal Mail the day following your order, which costs £5.00, (if you need it to go out the same day, please purchase before 11AM); buy two or more and (for UK zone 1 post codes ONLY), the price will be £10.00 but they will be shipped via a courier.

Overseas: please check a courier website using a 2kg packed weight and a box size of 20x20x15 cm for the item, or message me for an accurate estimate before you purchase, especially if you want two or more. As a guide; to the Republic of Ireland, France, Germany and most nearby EU countries this will be £20.38 via Royal Mail Airsure Small Packets.

For two or more I can get two into a box sized 31x12x24 weighing 3.5Kg or four into one 32x25x24 weighing 7Kg and as an example, sent insured and tracked and signed for via the Post Office to Australia would cost £82.30 or £102.00 respectively, which is less via Fedex, the lowest cost courier to OZ at £60.70 or £76.00 respectively.

For an estimate of the cost of shipping to other destinations please advise your full postal address and the quantity of drivers required.
Deliveries will not be undertaken to post office box numbers or to premises in multiple occupation. The same applies to business addresses unless the buyer sends me an eBay message stating that they accept full responsibility for all risk of loss or damage following delivery, as the item must be signed for and all liability for damage or loss passes to the buyer once a signature has been obtained by the courier's delivery driver.
This item already has a box, but will be additionally double boxed for protection, using recycled materials wherever possible.

NB: These shipping costs details apply to this eBay listing ONLY and are subject to variance as postal or shipping costs can change without notice and any increases will be passed on!
If you purchase more than one driver, please wait for me to prepare your eBay invoice before paying so that you do not pay excessive postal charges.


The small print - but please read it before you bid!

NB: The business has now been trading over 25 years as a trade B2B UK and exporting wholesale supplier and high power electronics design consultancy, so VAT is always extra, where it is applicable, (see below).

It seems that eBay does not properly understand the UK VAT rules governing domestic and International sales and exports, so I have consulted HM Revenue & Customs on this to obtain detailed clarification, and must always follow their clear advice, which is as follows:

For all eBay auction winners in the UK or EU member states
- I must add VAT at the current UK 20% rate to the total of the winning auction bid plus the shipping charge and issue a full, detailed VAT invoice on the day of despatch of the item(s).
Exception: non UK winners in the EU with their own international VAT number do not have to pay the UK VAT provided they advise this to me quickly by e-mail, then supply proof, such as a sheet of printed headed paper bearing their VAT number and their registered business address by letter or fax to me to confirm the details; this VAT number will be checked with the authorities for validity and a VATless EU invoice issued when the item is despatched.
Important note: The VAT registration name and address supplied must agree exactly with the VAT authority records and both the registered eBay and PayPal details.

For all eBay auction winners outside of the EU - these are not liable to pay the UK VAT, but will still receive a detailed invoice (without any added VAT); please contact me before paying!
Overseas winners however may still be liable for local taxes, customs charges or import tariffs outside of my control and knowledge and responsibility.

For all eBay Fixed Price offer buyers in the UK or EU member states - I will go along with eBay's silly rules and show prices that include the VAT at the current UK rate of 20% in the purchase price shown and in the shipping costs and will issue a full, detailed VAT invoice on the day of despatch of the item(s).
Exception: non UK buyers in the EU with their own international VAT number do not have to pay the UK VAT provided they advise this to me, so should contact me before buying by eBay message, then supply proof, such as a sheet of printed headed paper bearing their VAT number and their registered business address by letter or fax to me to confirm the details; this VAT number will be checked with the authorities for validity and a VATless eBay invoice raised with a proper EU invoice issued when the item is despatched.
Important note: The VAT registration name and address supplied must tally exactly with the VAT authority records and both the registered eBay and PayPal details.

For all eBay Fixed Price offer buyers outside of the EU - these are not liable to pay the UK VAT, but will still receive a detailed invoice (without any added VAT).
Overseas winners however may still be liable for local taxes, customs charges or import tariffs outside of my control and knowledge and responsibility.

All overseas bidders must satisfy themselves of the international shipping cost of an item before bidding by checking either
a) at the UK postal website, which
may be the cheapest option for small or light items;
go to
http://sg.royalmail.com/portal/rm/PriceFinder?catId=23500532&gear=pricingcalc and enter the shipping weight, destination and any carton size shown above (in blue) in the web site's pricing engine for the insured and Signed For shipping options shown there (don't forget to hit the "Get Exact Price" button to include the volumetric weight calculation) or,

b) at a courier's website, usually less expensive where items are heavy, but the cost of sending them will still be high and if the item is going overseas the cost leaps because the couriers also charge by volumetric weight, not actual shipped weight.

Shipping costs from the UK to far destinations across the World, to the USA, Japan or Australia for example, will be very high, even for light and non-bulky items, so please check the shipping cost before you bid!

Please also remember that the total cost paid may vary due to changes in currency exchange rates imposed by Banks or PayPal and that all prices are in £ Sterling (GBP) and not $US or Euros or whatever!

To protect both parties in the transaction, I insist that both the name and the address registered with eBay and that registered with PayPal must be the same, so please confirm your delivery address via eBay message when you receive your invoice from me to ensure it is correct and verifiable or I will delay shipping of your item; I also need a land line telephone number as all of the courier’s booking systems now require this and it will also help the delivery driver at your door, in case of non-answer, if you can also provide a mobile number as well.
This information will not be retained by me or used for future marketing, or sold on to any other organisation and is solely for shipment use and an aid to buyer protection following past bad experiences which eBay and PayPal were absolutely no help with!

Also, please be advised that this item will only be despatched via an insured and signed for method, to addresses which are exactly the same in both eBay and PayPal; I will not send items to a different address, a Post Office box, or care of an unverified business address, (see the above).

I accept PayPal payments or cash if collecting in person, but if the winning bidder wishes to pay via a cheque or by postal order(s) or by a bank transfer then under EU law I legally must accept this, (whatever eBay says), but because of recent problems, my bank has advised me that UK cheques and postal orders still cannot be regarded as having cleared until at least 10 working days have elapsed since the date I present them over the bank counter, (for a bank transfer this becomes 8 working days for UK transfers and 16 working days for International transfers and cheques drawn on foreign banks). Items paid for by cheque, postal order(s) or transfer will thus be sent out on the next available working day following this waiting period, provided the remittance still shows as "cleared funds".

I do not accept wired cash transfers, or respond to attempts to launder money and all such approaches will be immediately reported. MONACOR SPH-135KEP

I now reserve the right to cancel your bid and block you if you have zero or very low/bad feedback; if you are in this situation, you must provide me with your full details by e-mail prior to bidding to avoid this action, (from now on, due to fraudsters, I will cancel any sale to such a member and this includes last second winning bidders - please ask for permission to bid first!!)

Items are checked and tested before despatch wherever possible and nearly always double box packed with outer energy absorbing packing to minimise the possibility of damage in transit; I use recycled materials if I can and pack as lightly as practical for item protection as part of my contribution towards minimising global warming as more weight in transit uses more fuel.
For International sales, I still double pack the items but try to make the shipped weight and carton size absolutely as low as possible so as to minimise the shipping cost, consistent with preventing items from being damaged in transit.

I add no packing or handling charges!



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