Parasound 275 V.2 manual

Model 275 v.2 Tw o Chann el A mplifie r OWNER’ S GUIDE[...]

2 Important Safety Instructions The l igh tning f l a sh with the ar rowhea d sy m bol within an equ ilateral t riangle i s intende d to a lert the user to the pr e sence of ―dange rous vo ltage‖ inside the p roduct t h at may const it u te a r isk of e lectric sho ck . The excla m at ion point within an equila teral triangle i s intende d to a[...]

3 Table of Cont ents Introduction .................................................. 4 Placement and Ventilation Guidelines .............................. 5 Rack Mounting ................................................ 5 AC Main s Volta ge ............................................. 6 Rear Panel Connections and Controls .........................[...]

4 INTRODUCTIO N Thank You for Choos ing Parasou nd Yo ur ne w Para sound Mode l 275 v.2 pow er am p lifi e r has been designed w ith proven clas s AB amplifier techno l ogy. The Mode l 275 v.2 is bui lt to e x tre m e l y strict qualit y and per f or m ance standa rds f or wh i ch Paras ound is reno wned . W e’re prou d to offer you this ex cept [...]

5 Unpacking Your M odel 275 v.2 & Placement Guidelines Unpacking You r M ode l 275 v . 2 Carefu l ly re m o ve your Mode l 275 v .2 from its s hipping ca rton and loca te t he e nclos ed access ories : • AC pow er cord • Two 12 V DC trigger w ires w i th m ono p lugs , one with 3.5 mm (1/8‖) min i p l ug s, one w ith a 2.5mm su b-mi n i p[...]

6 AC Mains Voltag e NOTE: Be fore you plu g this am pli f ier into an AC main s outlet : 115v - 230v A C Voltage Selector Sw itch This s witch is found on the cha ss is rear pan el. The 115 V position o f this sw i tch is correct f or North America ; m os t other re gions req uire setting it to 230V. Make s ure the 115 /230V sw i tch is se t f or t[...]

7 R (Ri ght) and L (Left) Lev el Knobs To increas e the listening l e v el f or ea ch cha nnel t urn its Le v el kno b clockw ise. To de creas e the listening level turn it counter-clockw i se . The 275 has a total gain o f 28 dB so that its vol u me leve l s are compatib le with othe r channels i n your theater if they ar e driven by a THX-certifi[...]

8 Speaker C onnections Speaker Term inals There are sepa rate spe aker terminals for tw o pairs of s peakers , labeled Speake r Pair A and Speaker Pair B. T he s peake r t er mina l s accept spe aker w ires with ban ana plugs , spa de conne ctor s or bare w i re. Correct Speak er Polarity is Import ant Polarity refers to + and – conne cti ons . S[...]

9 How to set the Speaker Load switch wh en the Model 27 5 v.2 is configured for Bridged Mono operation: Singl e 8 Ohm Spe aker In this case the Spe aker Loa d switch sh ould be se t t o 4-8 Ω . Singl e 4 or 6 Ohm Sp eaker In this case the Spe aker Loa d switch must be s et to 2- 3 Ω . Two 8 Ohm Spe aker s In this case the Spe aker Loa d switch [...]

10 Turn On Op tions Switch For con v enience , there are three w ays the Model 275 v.2 can be turned on an d off: • Ma nually , by pre ss ing the Pow er button on the f ron t pan el. • A utomatically by Audio , w hen an audio signa l is pre s ent at the audio Inp ut jacks. • A utomatically by 12V , w hen a s uitable trigger v o lt ag e is ap [...]

11 12 Volt I nput Jacks The Mode l 275 v.2 12V i npu t us es a 3.5 mm jack ( m on o). To us e the 12V trigger, ins ert the trigger w ire pl ug in to this jack and the p lug at the w ire’s othe r e nd into the AV receiver or pre amp’s 12V output jack. W e ha ve include d a 3.5 mm t o 3 .5 mm t r i gg er wire as we ll as a 3.5 mm to 2.5 mm trigge[...]

12 Front Panel Ope ration Power Button Pres s the Pow er button once to turn the Mode l 275 v.2 o n. Pres s it aga in t o turn it o ff. W hen the unit is powe red on the L an d R i nd i cators shou ld illuminate gr een. The Pow er button i s i nop erati v e w hen the Turn On O pt i on s sw i tch is se t t o Aud io or 12V . A a nd B Speak er Select [...]

13 Problems and Remedie s Unit Will Not Turn On • Check the setti ng of the Turn On Op ti on s switch. (The front pan el Power button will be disabled i f the sw itch is set to Audi o o r 12V) . First try the M anual positi on and see i f the unit will turn on by pressing the f r ont panel Power bu t ton. • If using Audi o Tur n on , try incre [...]

14 Are You Hav ing Difficulty ? Repair or Service Call your Para sou nd dealer fi rs t. I f the dealer can’t he l p you with your prob lem we encourag e you to call Paras ound ’ s Technical Ser v ice Dep artmen t at 415 3 97 7100 , Mond ay - Friday, 8a m - 4p m Pacific T im e . W e can s ugges t other diagno stic t es ts you can eas i l y per f[...]

15 Input Impedanc e - 33 k Ω Input Sensiti vity 800 mV f or f u ll rated output (28dB) Inter-Channe l Cross talk 80 dB @ 1 kHz, 72 dB @ 10 kHz, 65 dB @ 20kHz Damping Factor - O v er 150 at 20Hz 12V Trigger Turn On - DC 9 – 12V, 15 mA Audio Turn On Quieter: 1 mV Loud er: 6 mV AC Power Requ ire m ent 110 - 120 V / 220 -240 V, 50 - 6 0 Hz 0.5 w att[...]

16 Paras ound Produ cts, Inc. 2250 McKinnon Ave, San Fr ancis co, CA 941 24 415 - 397 -7100 / Fax 415- 397 -0 144 www .parasou nd.com[...]