{"id":8860,"date":"2010-04-15T21:39:40","date_gmt":"2010-04-15T19:39:40","guid":{"rendered":"http:\/\/www.hifi-advice.com\/blog\/?page_id=8860"},"modified":"2018-02-03T13:41:43","modified_gmt":"2018-02-03T11:41:43","slug":"jrdg-company-special-continuum-500-and-250","status":"publish","type":"page","link":"https:\/\/www.hifi-advice.com\/blog\/jeff-rowland-integrated-amplifiers\/jrdg-company-special-continuum-500-and-250\/","title":{"rendered":"JRDG Company Special – Continuum 500 and 250"},"content":{"rendered":"

2009-2013<\/b><\/p>\n

Retail Price Continuum approx 9.000 euro
\nRetail Price Continuum with phono approx 10.000 euro<\/p>\n

\"rowland-continuum-mooi_550pix\"<\/p>\n

The Continuum 500 utilises 500 watt ICE power modules much like those inside the 201, 501 and 300 series. In addition, the Continuum 500 incorporates Power Factor Correction (PFC) circuitry that provides a near linear transfer of energy from power line to speaker outputs, just like in the 300 series amplifiers. Power supply is Switch Mode (SMPS) with active power factor correction (PFC) and universal AC input voltage.<\/p>\n

Refined by a massive 1500 Watts of pre power supply PFC rectification, and augmented by the tremendous authority of twin custom banks of bulk output capacitors. Continuum 500 combines tremendous authority, neutral extension, great imaging and staging, with the ability to recover minute sonic detail, an enviable harmonic richness, and an inherent capacity to control speakers ranging from full-range three ohms electrostatics and bipolars to large dynamic designs. The new DAC board is not compatible with the original Continuum.<\/p>\n

Rowland’s latest products now feature a slightly curved frontpanel and are less wide (now 39,4 cm instead of 44,5 cm). Optional high quality internal phono preamp modules are available for around 1000 euro.<\/p>\n

There’s also a 250 watt version:<\/p>\n

Inspired by the rare synthesis of the Model 201 monoblock power amplifier with the Capri preamplifier and further augmented by the authority of twin custom banks of bulk output capacitors. The Continuum 250 delivers authority, neutral extension, and great imaging and staging, combined with the ability to expose fine sonic detail, harmonic richness, and an inherent capacity to control speakers ranging from many bipolars up to larger dynamic designs.<\/p>\n

\"rowland-continuum-mooi-417_550pix\"<\/p>\n

\"rowland-continuum_front_850_550pix\"<\/p>\n

The original Continuum has a blue display while the later s2 has a green display.<\/p>\n

\"rowland-continuum-08_550pix\"<\/p>\n

\"rowland-continuum-0b_550pix\"<\/p>\n

\n

Continuum 500 inside<\/h2>\n

\"rowland-continuum-500-inside-1_550pix\"<\/p>\n

Inside the bottom part are two ICE power modules<\/p>\n

\"rowland-continuum-500-inside-2_550pix\"<\/p>\n

\"rowland-continuum-500-inside-2_-1b_550pix\"<\/p>\n

Inside the top part is extra power capacitance. Note the extra two brown capacitors for the Continuum 500. The circuit board has two empty spaces here for the 250 version.<\/p>\n

\n

Continuum 250 inside<\/h2>\n

\"rowland-continuum-250-inside-p817717672-5_550pix\"<\/p>\n

Above: inside on the bottom part are 2 ICE power modules. Below:\u00a0the top part contains extra power capacitance<\/p>\n

\"rowland-continuum-250-inside-p805173839-5_550pix\"<\/p>\n

\n

Distinguishing Continuum 250\/500 from s2<\/h2>\n

The second series Continuum can be recognised by the green display (the original Continuum has a blue display).<\/p>\n

Continuum 500 specs<\/h2>\n

Output Power @ 8 ohms Continuous RMS 500 watts, both channels driven<\/p>\n

Output Power @ 4 ohms Continuous RMS 1000 watts, both channels driven<\/p>\n

Frequency Response 5 Hz \u2013 45 kHz, -3 dB @ 8 ohms<\/p>\n

Peak Output Current 40 amps<\/p>\n

Dynamic Range 120 dBa<\/p>\n

Load Impedance Range 3 ohms \u2013 16 ohms<\/p>\n

Input Impedance 48 k ohms<\/p>\n

THD & Noise, 0.1 watts to Max Output < 0.1%, Typically .01% @ 1 kHz<\/p>\n

Damping Factor @ 1 kHz > 1000<\/p>\n

Gain Structure Preamplifier Section 14 dB, Amplifier Section 26 dB<\/p>\n

Volume Control Range 99.5 dB<\/p>\n

Volume Control Resolution 0.5 dB +\/- 0.05 dB Over Entire Range<\/p>\n

Common Mode Rejection Ratio > 85 dB, 20 Hz to 20 kHz<\/p>\n

Inputs 2 pair Balanced (XLR), 2 pair Unbalanced (RCA) \/ 1 pair Unbalanced (RCA), Unity Gain (Bypass)<\/p>\n

Outputs 1 pair Balanced (XLR), 1 pair Unbalanced (RCA) \/ 1 pair CE-Approved Speaker Wire Clamp<\/p>\n

Power Consumption Idle \u2013 60 watts, Max \u2013 2000 watts<\/p>\n

Power Supply Switch Mode (SMPS) with active power factor correction (PFC) and universal AC input voltage<\/p>\n

Amplifier Weight 44 lbs \/ 20 kg<\/p>\n

Amplifier Dimensions (H) x (W) x (D) 5.3″ x 15.5\u201d x 15.0\u201d (135mm x 394mm x 380mm)<\/p>\n

\n

Continuum 250 specs<\/h2>\n

Output Power @ 8 ohms Continuous RMS 250 watts, both channels driven<\/p>\n

Output Power @ 4 ohms Continuous RMS 500 watts, both channels driven<\/p>\n

Frequency Response 5 Hz \u2013 60 kHz, -3 dB @ 8 ohms<\/p>\n

Peak Output Current 35 amps<\/p>\n

Dynamic Range 117 dBa<\/p>\n

Load Impedance Range 3 ohms \u2013 16 ohms<\/p>\n

Input Impedance 48 k ohms<\/p>\n

THD & Noise, 0.1 watts to Max Output < 0.05%, Typically .006% @ 1kHzv<\/p>\n

Damping Factor @ 1 kHz > 1000<\/p>\n

Gain Structure Preamplifier Section 14 dB, Amplifier Section 26 dB<\/p>\n

Volume Control Range 99.5 dB<\/p>\n

Volume Control Resolution 0.5 dB +\/- 0.05 dB Over Entire Range<\/p>\n

Common Mode Rejection Ratio > 85 dB, 20 Hz to 20 kHz<\/p>\n

Inputs 2 pair Balanced (XLR), 2 pair Unbalanced (RCA) \/ 1 pair Unbalanced (RCA), Unity Gain (Bypass)<\/p>\n

Outputs 1 pair Balanced (XLR), 1 pair Unbalanced (RCA) \/ 1 pair CE-Approved Speaker Wire Clamp<\/p>\n

Power Consumption Idle \u2013 25 watts, Max \u2013 1000 watts<\/p>\n

Power Supply Switch Mode (SMPS)<\/p>\n

Amplifier Weight 41 lbs \/ 18.6 kg<\/p>\n

Amplifier Dimensions (H) x (W) x (D) 5.3″ x 15.5\u201d x 15.0\u201d (135mm x 394mm x 380mm)<\/p>\n","protected":false},"excerpt":{"rendered":"

2009-2013 Retail Price Continuum approx 9.000 euro Retail Price Continuum with phono approx 10.000 euro The Continuum 500 utilises 500 watt ICE power modules much like those inside the 201, 501 and 300 series. In addition, the Continuum 500 incorporates Power Factor Correction (PFC) circuitry that provides a near linear transfer of energy from power […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":8348,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-8860","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.hifi-advice.com\/blog\/wp-json\/wp\/v2\/pages\/8860","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hifi-advice.com\/blog\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.hifi-advice.com\/blog\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.hifi-advice.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hifi-advice.com\/blog\/wp-json\/wp\/v2\/comments?post=8860"}],"version-history":[{"count":10,"href":"https:\/\/www.hifi-advice.com\/blog\/wp-json\/wp\/v2\/pages\/8860\/revisions"}],"predecessor-version":[{"id":8909,"href":"https:\/\/www.hifi-advice.com\/blog\/wp-json\/wp\/v2\/pages\/8860\/revisions\/8909"}],"up":[{"embeddable":true,"href":"https:\/\/www.hifi-advice.com\/blog\/wp-json\/wp\/v2\/pages\/8348"}],"wp:attachment":[{"href":"https:\/\/www.hifi-advice.com\/blog\/wp-json\/wp\/v2\/media?parent=8860"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}