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Ready-made DNM Cables - everything is included (except P&P) - Speaker cables on sale, 10% off cable length cost

This product includes everything except postage and packing charges - cable, plugs and fitting all in the basic price. Just choose the extra cable length if you want more than the minimum stero length (0.5 metres for interconnects, 1 metre for speaker cables)

NEW - Ready-made Speaker cables are now on sale, 10% off the cost of the cable length

Why buy your cables made by DNM?

1. The type of solder we use is optimal for the copper used
2. Custom-made non-mechanical heated wire stripper preparation.
3. All DNM-made cables optimised for the customer's system.
4. Full system advice offered.
5. Cable strain relief built into our interconnect cable/plug installations.
6. Balanced XLR cables require a special build method to give full performance, only DNM Design use this system.

DNM Stereo Solid Core Cables - Speaker cables on sale 10% off

In 1984, DNM made the first spaced-pair solid core audio cable. During its 23 year production it became known for its extraordinary clarity. In 2007 DNM revisited cable design and developed three new Stereo Solid Core Cables, still inexpensive but possibly the most advanced audio cables made, regardless of price.

In the DNM online shop the cable is ordered separately.
Enter in the quantity box the length required in half metre units for example 10 half metres to order a 5 metre stereo length.

See the different cable sizes and cross-sections here.
How to order DNM cables explained here.

NEW - Speaker cables on sale, 10% off

Plugs

Reducing the metal content of audio plugs can pay dividends in sound quality.

We offer a choice of low metal content plugs for both interconnects and speaker cables :

3 types of phono plugs (low cost, high performance and Eichmann),

bayonet locking DIN plugs,

4mm leaf type stackable banana plugs

and 2mm solid plugs for use with DNM PA3 and PA3S power amplifiers.

Plug Fitting Service

To order a DNM cable ready-built, after choosing plugs and cable, please use this section.

Why you should have your cables made by DNM
Although other companies may offer to fit plugs, few have DNM's experience with solid core cables. We assemble our cables to the highest standard to gain the most from their unique design and we charge only £12 + VAT to solder a stereo length.

To request DNM to fit the chosen plugs onto your selected length of cable, go to the "Plug Fitting Service" link (after you have ordered the required length of cable and plugs).

How to order DNM cables explained here.

In the Plug Fitting Service quantity box enter the number of stereo cable lengths you want to be built.
For example this would normally be 1 if you want to have one stereo length of interconnect or speaker cable made up, but if you want a bi-wire speaker cable set to be built you would need to enter 2 in the quantity box.

DNM-built 1 metre stereo interconnects are now available from just £53.38 including VAT.
To order this low cost cable choose 2 x 0.5 metre lengths of DNM stereo interconnect cable, choose 2 DNM Low Cost phono plugs and then enter "1" in the quantity box of the Plug Fitting Service.

If you are unsure how your cables should be chosen or built, please use the "contact us" button at the top of this page to obtain a quote from DNM Design.
(This is particularly necessary for DNM DIN interconnects and for XLR interconnects as there are several possible wiring layouts. XLR plugs are available and details will be added to our Shop soon.)

HFTN - In-Plug - including all fitting by DNM

PRODUCT ANNOUNCEMENT

THE DNM HIGH FREQUENCY TERMINATION NETWORK (HFTN)
is a new type of cable-related product that reveals the full audio potential of DNM interconnect cable.
The HFTN improves clarity by controlling ultra-high frequency reflections within the cable, reducing digital glare and enhancing tonal purity. DNM interconnect with HFTNs can outperform the highest priced interconnect cables.


Background
Audio cables are intended to work in the audible frequency range from 20Hz to 20,000Hz. At the low end, cables transmit energy down to direct current and at the highest frequencies some signal sources extend up to 100,000Hz.
1) the units used to measure high frequencies are kiloHertz (kHz) for thousands of Hertz
(1 Hertz = 1 cycle per second) and MegaHertz (MHz) for millions of Hertz.
2) the term 'amplifier' applies not only to the power amplifier driving the speakers, but to all the amplifiers used in the audio chain, including the pre-amplifier, the output amplifiers in the CD player, D-to-A converter, radio tuner, MP3 player etc.


The problem
When an audio cable is connected to an amplifier it interacts with a range of frequencies that are much higher than anticipated. The cable is exposed to radio frequencies (RF) that extend above 100MHz and this unexpected energy is injected into the cable by the feedback system in the amplifier.

Feedback is used in almost every amplifier to define gain and reduce distortion. It is generally thought that it improves amplifier performance without adversely affecting sound quality. However, because feedback action occurs at very high frequencies, any RF non-linearity in the amplifier can interact with the cable and cause degradation of the audio signal.
This interaction is a primary cause of the differences heard in audio cables.

One easily measured consequence is severe load dips in the cable impedance, as seen by the amplifier, down to just a few Ohms at multiple points across the RF range. The uneven RF loading occurs in interconnect and speaker cables and it significantly degrades amplifier performance, resulting in glare and loss of clarity.

The DNM solution
DNM research has shown that it is possible to minimise this problem by controlling the RF termination of the cable so that it will not interact.
(In the valve amplifier heyday, impedance matched connections were widely used mainly to avoid signal loss, but in modern hi-fi this discipline seems to have been forgotten)

As a result we have developed a production version of the RF termination system.
Named a "High Frequency Termination Network" (HFTN), it is a precision circuit that almost eliminates RF load variation in DNM cables whilst remaining transparent to audio signal.
HFTNs are available on micro-PCBs small enough to fit inside interconnect plugs and soon DNM will release another version that will fit onto the ends of DNM speaker cable. The HFTN can be added to existing DNM cables or ordered with new DNM cables.
With HFTNs the performance of the amplifier/cable system is significantly improved, resulting in a surprising increase in audio clarity.

Now available in our online shop:-
A dedicated HFTN is available to suit each of the three (RCA) phono plug types and the DNM DIN plug.

A DNM stereo interconnect cable fitted with HFTNs can be ordered as follows:-
First - choose your DNM-made cable. Purchase :
1. the required length of cable,
2. the chosen plugs,
3. the plug fitting service (one per stereo length).
Now, to add HFTNs to this cable, purchase :
4. 4 HFTNs (the quantity needed for each stereo length) of the type for your chosen plugs and
5. 4 HFTN fitting services (one for each HFTN).

HFTN Fitting Service

Each HFTN requires precision fitting into the selected audio plug.
To order a DNM stereo interconnect cable ready-built and fitted with HFTNs, after choosing the type of plugs and the cable, then order the HFTNs and finally use this section to order one HFTN fitting service for each HFTN.
For example, one stereo length of DNM interconnect cable fitted with 4 HFTNs needs 4 HFTN fitting services to be added to the order.

HFTNs - NEW SPEAKER and Interconnect HFTNs - In-Cable or In Parallel for DIY fitting

NEW PRODUCT ANNOUNCEMENT


NOW - the NEW In-Cable HFTN can be soldered into existing DNM cables at home if you have soldered cables before - you only pay for the HFTNs now.

Each In-Cable HFTN is just 48mm long by 13mm wide and only two wires need to be soldered on at each end of the In-Cable HFTN.


THE IN-CABLE DNM HIGH FREQUENCY TERMINATION NETWORK (HFTN)
is a new type of cable-related product that reveals the full audio potential of DNM interconnect cable.
The HFTN improves clarity by controlling ultra-high frequency reflections within the cable, reducing digital glare and enhancing tonal purity. DNM interconnect with HFTNs can outperform the highest priced interconnect cables.



Background
Audio cables are intended to work in the audible frequency range from 20Hz to 20,000Hz. At the low end, cables transmit energy down to direct current and at the highest frequencies some signal sources extend up to 100,000Hz.
1) the units used to measure high frequencies are kiloHertz (kHz) for thousands of Hertz
(1 Hertz = 1 cycle per second) and MegaHertz (MHz) for millions of Hertz.
2) the term 'amplifier' applies not only to the power amplifier driving the speakers, but to all the amplifiers used in the audio chain, including the pre-amplifier, the output amplifiers in the CD player, D-to-A converter, radio tuner, MP3 player etc.


The problem
When an audio cable is connected to an amplifier it interacts with a range of frequencies that are much higher than anticipated. The cable is exposed to radio frequencies (RF) that extend above 100MHz and this unexpected energy is injected into the cable by the feedback system in the amplifier.

Feedback is used in almost every amplifier to define gain and reduce distortion. It is generally thought that it improves amplifier performance without adversely affecting sound quality. However, because feedback action occurs at very high frequencies, any RF non-linearity in the amplifier can interact with the cable and cause degradation of the audio signal.
This interaction is a primary cause of the differences heard in audio cables.

One easily measured consequence is severe load dips in the cable impedance, as seen by the amplifier, down to just a few Ohms at multiple points across the RF range. The uneven RF loading occurs in interconnect and speaker cables and it significantly degrades amplifier performance, resulting in glare and loss of clarity.

The DNM solution
DNM research has shown that it is possible to minimise this problem by controlling the RF termination of the cable so that it will not interact.
(In the valve amplifier heyday, impedance matched connections were widely used mainly to avoid signal loss, but in modern hi-fi this discipline seems to have been forgotten)

As a result we have developed a production version of the RF termination system.
Named a "High Frequency Termination Network" (HFTN), it is a precision circuit that almost eliminates RF load variation in DNM cables whilst remaining transparent to audio signal.
HFTNs are available on micro-PCBs small enough to fit inside interconnect plugs and soon DNM will release another version that will fit onto the ends of DNM speaker cable. The HFTN can be added to existing DNM cables or ordered with new DNM cables.
With HFTNs the performance of the amplifier/cable system is significantly improved, resulting in a surprising increase in audio clarity.

Now available in our online shop:-
A dedicated In-Cable HFTN is available to suit unbalanced cables (phono or DIN plugs) or balanced cables (XLR plugs).
There is also a version of the unbalanced In-Cable HFTN made just to suit the DNM 3D preamplifier.

To order In-Cable HFTNs for an existing cable, just order four In-Cable HFTNs for each stereo cable.

You can also add In-Cable HFTNs to new DNM-built cables if you wish. If you do wish to do this, please order
1. the required length of cable,
2. the chosen plugs,
3. the plug fitting service (one per stereo length).
Now, to add HFTNs to this cable, purchase :
4. Four In-Cable HFTNs (the quantity needed for each stereo length) of the type for your chosen plugs and
5. Four In-Cable HFTN fitting services (one for each In-Cable HFTN).

Capacitors

Conventional capacitors, being made of large, coiled, thin strips of aluminium, are prone to induce eddy currents across their conducting surface. These currents prevent the capacitor from doing its job optimally, thus degrading subjective sound quality.
By introducing a series of tiny slits in the foil conductors these eddy currents are dramatically reduced, so improving the subjective performance of these DNM-designed capacitors (both the Slit foil and T-Network ranges).

T-Network
Instead of the simple positive and negative terminals found on the majority of capacitors, the
T-Network has inputs and outputs for both terminals. These extra terminals are connected at the centre
and ends of each capacitor plate, guiding the current along a controlled path. The T-Network design reduces the effect of unwanted resistance and inductance.