Crown D-75 - Power Matrix

FTC Continuous Avera ge
Single Cycle Too e
40mS
Tone Bursl
ElA Wa ilS
~
Pow er al "> I % TIID
Burst W atlS at <0.05% THD
Walts at <0.05% TIID
+/-JdB
Test
(See nOle 1)
(See note 2)
(SeenOlc 3)
I% THD
(See note-4)
Configura
ti on
20Hz-20 KH z
lIrn,
1KHz
lKH,
l Kfu
& Loa l ncr Ohm
4
45
55
115 70
55
Stereo per CH.
8 35
40 60
45 40
(both ch, powered) 16
25 25 30 25 25
Bridged Monaural
8
95
110 I3S 105
(Ba lan ced Output) 16
70
80
130 90 75
Fig. 7. 1 Pow er Matrix
Power Specirlcatlons
Many manufac\UTClS publish power specifications .... ith a IOlermceof ± I dB or worse, That means their amplifier can deviate more than
20% in output! A 100 wan amp would mccltheir spec if il only produced 79.4 walts. Other manufacT\U'Cni qualify !.heir sJlCC5 by saying
they are "typical" Of "subject 10 mll1lufacruring toieranccs," thereby removing any perfOl1llmoe guarantee. We lake a different approach
at Crown - our published specifications aregllOl'an!eed for Ihree yean and can be proJected wi thSu\lice Plus for lI1l additional 3 years.
Further. because OUT "in-house" specs are more suingc:nt than our published specs, eye" Crown am plifier wj!l exceed iL~ published ~pec:$.
W .. beli~\'~ you should gel what yo'\! pay for.
No les :
I. ContinUOII$ powerin the contex t of Federal T1'3d e Commission testinG is understood 10 bea minimum offive mioutes of opel'll1iOll. Harmoniedistonion
is measured at the R..VJS $Urn total as, ptTCellIage of the fundamcolll.l OU t put vot~ e. This applies for all w at taees ~rthao 0.25 Wall S.
2.. /I. singleeycleof sine wa\le is ~rted 10 theami'lifierand monitored r ornon-lineardi~ortion.. ~avemge power during the burst is n:pwted. Speakers
must be able 10 withstand thi$level iflhey are to be saf ely used ..... ith thi$ amplifier_
3. A 40 millisemncl bum or two cycles of line ..... a\le (wtlichever is 01 puttr du~on) is used and the power oompl.ltcd as the average P(w 'a- durine \he
bvnl The dut y cycle of this I.!:$l it 10 pen::enl. This powcr\eveJ is a ~u~ of 0011 ' loud an amplifietb as paceivtd by the hearing pmcus.
<I . ElA Jtandard RS-<l9Q (both chamels driven).
$pecffications 7-3