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标题: 请问汽车功放可以 变成家用的嘛 [打印本页]
作者: chunhualo    时间: 2007-1-5 14:10
标题: 请问汽车功放可以 变成家用的嘛
哪个XD知道 假如把汽车功放 弄成普通家用220v 需要什么材料 大概多少钱# X/ I6 \3 s# t; x" Q; z, D9 @
我有一个我之前在国外汽车的功放 带回家里闲置的NNNN久。。最近才发现 不知道可不可以改成家用功放
) A8 }4 n8 ~1 H! `8 q还有哪个XD知道 在上海有哪家店可以帮忙改装。长宁区的。。谢谢
作者: chunhualo    时间: 2007-1-5 14:21
Advanced Computerized Protection Circuitry - improved protection circuitry, for fewer failures. When the protection circuit is activated, the amp will turn off.
. j" x& D  Y4 xLarger Terminal Blocks - all models can accept up to 4 gauge wire (i.e. more current capability)   }$ _: T; W% n( y6 w& C% S, ^
Larger Heatsink - each model "grew up" by 1 to 2 inches with substantially more mass. Greater cooling capabilities, and longer initial time to thermal. # j: J1 N/ e9 G4 }
Larger Output MOSFETS And Larger Power Supply MOSFETS - provide better power stability and improved reliability. + |% H) b8 z) l2 V" I, [
New Thermal Pads Under MOSFETS - because silicon grease, formerly used under the MOSFETS, broke down over time and spilled out onto circuit board, we replaced it with polymer thermal pads that offer better transfer of heat from MOSFET to the heatsink. Over time, the polymer actually fills in the pores, creating an even tighter seal. This improvement offers a greater degree of consistency in manufacture for better product reliability.
+ [  L- d+ Q6 l* M) \) i2 v- O( `Improved ISO-FEET - upgraded to a more pliable nylon material, for improved durability and flexibility.
4 Y- Y% K4 {+ y9 N' D9 @( E) s! J; J8-Volt RMS Input - this Large Signal capability allows better integration with high voltage output source units, increased dynamic range and better Signal-to-Noise ratio in the system. : U7 b$ J& }6 X" d
Continuously Variable Crossover - this allows the user to adjust the crossover frequency from 40Hz to 175Hz with a high or low pass configuration, including adjustable crossover slope from 12db - 18db/Octave.
: L) s4 m- f  P1 |1 ?Advanced PCB Design Technology - a new FLOOD technique in circuit board design allows us to truly "flood" the circuit board with copper for substantially higher current capability, lower distortion and increased reliability.
; P$ M/ {! m# v5 x. G! @, s& gThermal Reliefs - New "star pattern thermal reliefs" improve solder connections and increase reliability. " n* I  b9 \) N* w
Individual Gain Controls For Left/Right Channels - for better tracking and to make it easier to center up the soundstage (a critical element in the competition circuit). + s* B* }- B* _
Reverse Outputs - when the user selects the highpass setting on the crossover, a complimentary lowpass signal is passed through the RCA outputs, and vice-versa. Crossover frequency of the RCA outputs is determined by the frequency setting on the crossover. This makes it much easier to design multi-amplifier systems. * ]$ O. v' l0 @- v+ S5 s' M

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8 O' d) U# k) CSpecifications
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# J7 D1 x& J# h/ d: PRMS Power measured at 12.5 Volts DC:
# g) I4 Y) }8 q9 v- f" U37.5 watts x 2 into a 4 ohm load with less than 0.05% THD+N$ R& Z# w3 s) ~1 c$ N
75 watts x 2 into a 2 ohm load with less than 0.1% THD+N
( G9 }9 k' h3 \2 ?150 watts bridged into a 4 ohm load with less than 0.1% THD+N
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: ^. G' v: l, t" oDynamic Power (IHF-202 standard) measured at 14.4 Volts DC: - k" {2 _& k2 r) A4 z: ~7 s* D
90 watts x 2 into a 4 ohm load
) j: y% J- \% w' H165 watts x 2 into a 2 ohm load
" l0 c; E. l7 W5 F325 watts bridged into a 4 ohm load  a7 x0 ^, u( ?% c: l
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Signal to Noise Ratio 8 ^9 B0 ~" a( i$ i) D0 J# X/ M
> or = 110dB A-Weighted
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Damping Factor: " _  C+ q+ T# z2 C, s! R. q
>200
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% x0 w6 k# C0 z5 R9 r/ wMaximum Input
( H8 ~, E3 i! N8 i' C) N! N$ `8 Vrms ( Z" |' z$ B& F! Y0 t7 L# D: y

% g' x3 k3 _6 q$ `' M: d- v1 F8 \Frequency Response
3 }" L! h' P8 R8 ?, @20Hz-20kHz ±0.25dB
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4 p. p' Z. j+ o$ A. B7 m0 _Bass EQ # g/ @8 A3 g4 t
(0-18dB) centered at 45Hz
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. I& a' a+ v& Y) C# TCrossover
; Y# e2 ^' r8 c: A3 Z6 jVariable 40Hz to 175Hz2 K" H% N7 J# V% g* O
12-18dB/Octave$ H% P9 J7 B- E2 A
HP or LP configurable
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Dimensions 1 b0 G+ Q9 A& d' E
8" x 9" x 2" (20.3cm x 22.8cm x 5cm)0 ?, y- E# {( {8 g* [$ m
9-1/4 Wide Including IsoFeet (23.5cm)
作者: chairmanai    时间: 2007-1-5 14:32
汽车用单元貌似一般都是4欧的，这样家用功放很难推好吧？
作者: garry    时间: 2007-1-5 15:03
C版，LZ问的是车载功放怎么用在家里吧？
作者: athlonxp_0    时间: 2007-1-5 18:14
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作者: OCL    时间: 2007-1-5 18:40
可以稍微改进。' G% l) v5 J6 ^/ F4 v) T

1 D$ C& w) m4 I将汽车功放的电源部分（将12V变成 ＋－30V左右）去掉，直接用变压器整流滤波送至功放部分就OK了。) p! o, L) N4 e8 q! w

9 x. }" W( \" I1 e汽车功放大多为了节能，功放的工作点大多为BC类，声低干涩。不建议使用。
作者: OCL    时间: 2007-1-5 18:44
“声低”更正为“声底”
作者: chunhualo    时间: 2007-1-6 04:03
.....好复杂。。。。是不是有店可以帮我做到这一点。。呵呵。。。
作者: 酷风    时间: 2007-1-6 12:12
原帖由 chunhualo 于 2007-1-6 04:03 发表4 s# C% P7 E6 U8 I2 L2 g1 }2 H* W
.....好复杂。。。。是不是有店可以帮我做到这一点。。呵呵。。。
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到修理家电的地方去问一下好了
作者: chairmanai    时间: 2007-1-6 13:36
原帖由 garry 于 2007-1-5 03:03 PM 发表$ [1 [) g- H0 s: d: c. F" t6 m
C版，LZ问的是车载功放怎么用在家里吧？
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晕～～～有没有看帖子:a) 2 j3 P: n7 u8 Q- Y& _# ~
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这个不难，改改就行了。很多人也是买高级车的YLJ功放回来改，但是效果不见得好吧？
作者: chunhualo    时间: 2007-1-6 14:11
假如只用来推一个低英炮呢？？
7 n. N8 L! D6 y! K. |效果真得那么差？？主要是这个放着也是放着
作者: kingcoco    时间: 2007-1-21 15:04
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作者: 磐石    时间: 2007-1-21 22:44
12V的直流电源不好找,用变压器体积比较大,用开关电源吧,找能输出20A以上的,喇叭要用4欧的.
作者: chairmanai    时间: 2007-1-21 22:47
原帖由 磐石 于 2007-1-21 10:44 PM 发表
( G7 |- I; F5 x* @# X% d12V的直流电源不好找,用变压器体积比较大,用开关电源吧,找能输出20A以上的,喇叭要用4欧的.

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今天买了个12V/5A的开关电源:lol:
作者: 磐石    时间: 2007-1-21 22:53
原帖由 chairmanai 于 2007-1-21 22:47 发表1 {" n5 `4 f( r

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今天买了个12V/5A的开关电源:lol:
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不买大一点的
作者: jtton    时间: 2007-1-21 23:31
电脑电源不是正好，12V电流又大，300W
作者: 酷风    时间: 2007-1-22 13:23
原帖由 chairmanai 于 2007-1-21 22:47 发表
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今天买了个12V/5A的开关电源:lol:

4 }+ ?8 |" i- T# w接上去了没有？效果怎么样？



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