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DB basic 400 active speaker unit. darlington pair SAP16 N and P. What are their location numbers on the pcb....Q?

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Posted on Jan 02, 2017

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Geekman
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SOURCE: my db basic 400 active speaker coil is bunrned

Speaker coils cannot be replaced. The whole speaker needs to be replaced.

Posted on Jan 11, 2012

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Bosch axxis washer wfl 2080 lights won't go on, but unit has power to it


the main pcb is most likely dead or if your really lucky the EMI filter has died, the pcb is quite expensive (around $400 where i live and thats at trade price direct from them) so fingers crossed its the emi filter, you wont know for sure unless you take the top off and check what the voltage is across active neutral at the board, its quite a simple task but you will require a multimetre and a number 25 torx head screw driver (Bosch dont like using normal screws)

Feb 05, 2017 | Bosch Washing Machines

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What are the specs? 102 dB or what?


db stands for Decibels. A unit for input sensitivity amps. Visit the site "Electro-help".

Jun 03, 2012 | Kenwood Vintage Pair Of Kl-880 Speaker...

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Kenwood KL 880 speakers specs


It is a term which need more clarification. Visit this site 'Electro-help'

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1 Answer

My db basic 400 active speaker coil is bunrned


Speaker coils cannot be replaced. The whole speaker needs to be replaced.

Jan 11, 2012 | Car Audio & Video

1 Answer

What is the voltage polarity ac or dc of the power adapter for SP-613 speakers?


this is actually the product description for your speaker


Product Description
Front
Speaker Unit: 1inch +6.5inch *2+8inch
Power: 10-100W
Sensitivity: 88 dB
Impedance: 4 ohm
Frequency Response: 45-20K Hz
Production Size: (H*W*D) 1087*210*336mm
Package Size: (H*W*D) 1162*500*400mm

CENTRE
Speaker Unit: 1inch +4inch *2
Power: 10-60W
Sensitivity: 86 dB
Impedance: 8 ohm
Frequency Response: 75-20K Hz
Production Size: (H*W*D) 160*500*179mm

SURROUND
Speaker Unit: 1inch +4inch
Power: 10-60W
Sensitivity: 85dB
Impedance: 8 ohm
Frequency Response: 75-20K Hz
Production Size: (H*W*D) 225*160*158mm
Package Size: (H*W*D) 550*273*415mm /3PCS

ACTIVE SUBWOOFER
Speaker Unit: 10inch
Impedance: 8 ohm
Crossover Point Control
Handling Power: 120W
Production Size: (H*W*D) 405*328*350mm
Package Size: (H*W*D) 465*330*465mm

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1 Answer

How manny watts per channel??


I'm guessing the 200w are the Speakers maximum input, right?
Is the sub passive or active(=integrated Amp)?

If it's a passive sub:
If it's a 2-Channel Amplifier, you're talking about, you won't be able to connect all 3 - unless you can live with one speaker being significantly louder than the other or your amplifier going up in smoke...

As to the power required, if it's 250W PER CHANNEL the amp will blow your speakers, if it's 250W combined you may not be able to drive them to their absolute limit but they will be loud enough (they probably reach their db-limit with less than 200w but if they reach it with 200, you'll only get ~6db less than that with 125w per channel)

The Watt-numbers on (passive) speakers only tell you how much they can take before they are damaged, the relevant numbers for your problem are the efficiency (the unit is db/W or db/2,83V) and the maximum db-level (most floorstands can produce between 100 and 110 db at one meter distance)

If your speaker produces i.e. 87db/W at 1 meter distance (which is the standard measuring distance), it will produce ~97db at 10W, ~107 at 100W, etc. - unless it reaches it's limit before that. Most speakers can take a lot more power, than they need to reach their limit but they won't get any louder if you keep turning up the volume beyond that (they'll probably produce more distortions though, so don't)


As to the sub:
if it's passive, you'll need another amp (there are special amp-modules for subs, but any amp with enough power will do)

if it's active, you can connect it to the sub-out of your preamp (I'm guessing the PA Amp you mention is a Main Amp, not an integrated one) or your integrated amp via cinch (a tape-out works too)

OR you can connect it to the speaker outputs and than connect the speakers to the sub - in that case the sub is still NOT driven by your main amp but you can use it's crossover to separate low frequencies (--> SUB only) form higher frequencies (--> SPEAKERS only).

Most active subs can be connected both ways, if yours can't your stuck with one.

Rarely there is a third way, which only works if your sub supports it and if you either have seperate Pre- and Main-Amp or if your integrated amp has a Pre-Out and a Main-In (in that case in can be split into preamp and main amp)

IF you want to use your subs Crossover (which is good idea, provided it has one), you'll have to connect it between Amp and Speakers (works with allmost all active subs) or between preamp and main amp (works only with a few)



I hope this is helpful

Jan (Hamburg, Federal Republic of Krautistan)

Mar 17, 2010 | Radio Shack 250 Watt PA Amplifier...

1 Answer

Db-0812d pcb mounted tranformer in my fellowes ps-77cs shredder has burnt out - need tech details of this transformer to enable me to find a replacement


Judging by the number of Google responses to DB-0812D it appears that this little transformer is mounted so that it hangs on its connectors = upside down from the intended mode and the slightest bump placing the power unit back on the collector bin can snap it off. Bad design on an otherwise good machine.
Action 1. Bin it.
Action 2A. Buy a different make [which may have other problems] - or...
Action 2B. Buy another the same but use hot melt glue to ensure the DB-0815D will stay in place.

Dec 29, 2009 | Fellowes Office Equipment & Supplies

1 Answer

Connecting 6 pair of speakers (12 total) via one stereo receiver


His receiver has enough power all 6 pairs of speakers, however, he should use a speaker selector switch. Niles is very well built and you can find them with an "on/off" button for each pair, and they have models that will independantly conrol volume as well. (SSVC-6) For a good unit, expect to pay from $250-$400. They will keep the unit at an 8ohm load and not over tax the receivers power supply.
Hope this helps

Jul 29, 2009 | Audio Players & Recorders

1 Answer

Do you have instructions for wiring install on volfenhag GX8200??


Amplifier Class AB
Number of Channels 2
RMS Power (4 ohms) 120 watts x 2 channels
RMS Power (2 ohms) 200 watts x 2 channels
RMS Power (1 ohm) Not Stable
Bridged RMS Power 400 watts x 1 channel
Total RMS Power Output 400 watts
Peak Power Output 1000 watts watts x 1 channel
Minimum Impedance Unbridged 2 ohms
Minimum Impedance Bridged 4 ohms
THD at Rated RMS Power 0.1%
Speaker Level Inputs No
Preamp Outputs 1 pair
Built-in Crossover High-pass (HP), Low-pass (LP), Full (AP)
High-Pass Crossover Frequency 40 - 250 Hz
Low-Pass Crossover Frequency 40 - 250 Hz
Subsonic Filter N/A
Signal-to-Noise Ratio N/A
Channel Separation N/A
Bass Boost 0 - 18 dB
Bass/Gain Remote Yes
Fan Cooled Yes
Fuse Rating 20A x 2

Dec 24, 2008 | Volfenhag ZX-8200 Car Audio Amplifier

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