Category: ‘Blog’

NHT 2.5i review part 3!

July 14, 2015 Posted by gornir

 

This NHT 2.5i review is a small summer project of mine and it will be divided into 6 parts. The review will include, dissecting the loudspeaker and examine the enclosure build from the inside as well as a lot of measurements, including driver unit measurements and loudspeaker measurements paired with some subjective listening reviews.

Depending on the outcome of the measurements and simulations, I might also come up with some suggestions on how to improve the design.

Follow the link to: NHT 2.5i review part 3

 

NHT 2.5i review part 2!

July 10, 2015 Posted by gornir

 

This NHT 2.5i review is a small summer project of mine and it will be divided into 6 parts. The review will include, dissecting the loudspeaker and examine the enclosure build from the inside as well as a lot of measurements, including driver unit measurements and loudspeaker measurements paired with some subjective listening reviews.

Depending on the outcome of the measurements and simulations, I might also come up with some suggestions on how to improve the design.

Follow the link to: NHT 2.5i review part 2

NHT 2.5i review part 1!

July 8, 2015 Posted by gornir

 

2.5i_Pic0

This NHT 2.5i review is a small summer project of mine and it will be divided into 6 parts. The review will include, dissecting the loudspeaker and examine the enclosure build from the inside as well as a lot of measurements, including driver unit measurements and loudspeaker measurements paired with some subjective listening reviews.

Depending on the outcome of the measurements and simulations, I might also come up with some suggestions on how to improve the design.

Ok, let’s start!

Follow the link: NHT 2.5i review part 1

Classic Two – M5 Construction Released!

July 4, 2015 Posted by gornir

SONY DSC

 

Hi everyone!

It’s time to publish a new loudspeaker design!

My last published design was the small Prestigious Two – M1 DXT. With its 4.7 liter enclosure it was one of the smallest designs I’ve done, but this time I release a loudspeaker on the other side of the scale.

With a 27 liter enclosure the Classic Two – M5 is on the verge of being too big for a stand-mount loudspeaker, but luckily, if desired it can be converted to a small floorstanding loudspeaker.

The ScanSpeak drivers from the Classic line are really nice driver units and even though they are old constructions they are still very nice sounding and I’m very pleased with results using them in the Classic Two – M5 loudspeaker.

For further details see:

Classic Two – M5

Regards

/Göran

Summer Project!

June 21, 2015 Posted by gornir

The summer project!

A friend of mine, has upgraded his NHT loudspeakers to the 2.9 model and he’s kindly lending me his old NHT 2.5i loudspeaker for a loudspeaker review!

Expect a similar review like the Wharfedale Diamond 10.2. I will dissect the loudspeaker paired with a lot of measurements and perhaps some suggestions on how to improve the loudspeaker.

It will be interesting too see how a 17 year old loudspeaker design will measure up to today’s standards and how it has survived many years of use.

Stay tuned!

Regards

/Göran

 

 

 

Construction Update!

June 21, 2015 Posted by gornir

 

Hi Everyone,

It’s time for an update of a new loudspeaker design, soon to be published.

The last loudspeaker design I published was the small Excellence Two – M1 DXT . I urge anyone who owns a pair of SEAS Excel W12 mid-woofers to build it. It has some very impressive performance for its size of only 4.7 liters.

Oh no, some will say, not another 2-way stand-mount! Sorry, but I just love 2-way stand-mount loudspeakers.

This new Classic Two – M5 loudspeaker design is rather large (27 liters), so it can actually quite easily be converted to a small floorstander, if one so wishes.

It uses two driver units from the ScanSpeak “Classic” line. The new and updated  mid-woofer 18W/8545-01 and the tweeter D2905/950000. These two drivers are used in many commercial designs and I can see why. They are some really good sounding drivers and I’m really pleased with the result.

Some fine tuning and some final measurements are left to do and of course, finding the time to publish it!

Regards

/Göran

 

 

 

 

 

Prestigious Two – M1 DXT Construction Released!

May 30, 2015 Posted by gornir

 

 

Hi everyone!

The Prestigious Two – M1 DXT is the sibling to the Excellence Two – M1 DXT, but costs about 280$ less. It share many qualities with the Excellence Two – M1 DXT, but  doesn’t have the same incredible bass performance and extremely low distortion profile as the Excellence Two – M1 DXT.

Instead it has a more lively mid-range presentation compared to the more neutral warm sounding Excellence Two – M1 DXT.

For further details see:

Prestigious Two – M1 DXT

Excellence Two – M1 DXT

This was the last mini monitor for a while and I promise that the next loudspeaker to be published will be a “lot” bigger loudspeaker!

Regards

/Göran

Excellence Two – M1 DXT Construction Released!

May 24, 2015 Posted by gornir

 

Hi everyone!

It has been a while since the last published loudspeaker design and the Excellence Two – M1 DXT has actually been ready for a while, but unfortunately I simply haven’t had the time to publish it.

If you search for a bedroom or small room loudspeaker with an amazing bass performance, look no further. This is a low distortion bass capable small loudspeaker with a sound larger than its appearance.

This loudspeaker replaces the older published Excellence Two – Mini Monitor design, which is moved to the archive section.

For further details see:

Excellence Two – M1 DXT

Regards

/Göran

4,5″ Driver Measurements!

May 16, 2015 Posted by gornir

 

Left: SEAS Prestige CA12RCY and L12RCY/P

Right: SEAS Excel W12CY003 and W12CY001

I’ve added measurements for the SEAS CA12RCY and the W12CY003 to the mid-woofer measurement section.

The measurements speak for themselves, but here are some comments about them:

Despite their small size they all need a rather low cross-over frequency in order to work properly. Especially the hard cone versions L12RCY/P and the W12CY001 ideally needs a cross-over point of about 2kHz in combination with notch filters in order to deal with the large cone break-up modes and their distortion profiles. For its size the W12CY001 have amazing bass capabilities.

The coated paper cone CA12RCY also have a raising distortion profile in the upper mid-range at higher listening levels, despite its rather smooth frequency response. This mid-woofer would also work better with a cross-over point of about 2kHz.

The Nextel cone W12CY003 mid-woofer can be used higher up in frequency, but have a rather high resonance frequency and it has some resonance and distortion issues at 950Hz, which might limit its usability.

For a complete line-up of 4.5” SEAS mid-woofer measurements see:

SEAS H1152 CA12RCY

SEAS H1207 L12RCY/P

SEAS E0044 W12CY003

SEAS E0021 W12CY001

 

For Sale!

May 14, 2015 Posted by gornir

 

A pair of ScanSpeak Illuminator R3004/602010 tweeters and a pair of SEAS ER18RNX (H1456) 7″ mid-woofers are for sale in the For Sale! section.

For measurement details see:

ScanSpeak Illuminator R3004/602010

SEAS ER18RNX (H1456)

 

Regards

/Göran