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Maybe preaching to the choir a little bit, but the 'Franklin' version of the Dayton APA150 amp is on a blowout sale for $99. https://www.parts-express.com/frankl...ifier--315-144
This is a really good amp for doing measurements on speakers in my experience, and for a few reasons...
* It has enough power to do measurements and really test the output on most speakers as you get farther along during crossover prototyping,
* It is pretty durable, with short circuit protection, I can vouch for that myself. After a short on mine while prototyping a crossover, it clicked and went on fan-protect mode with a red light on the front. After finding the short and removing, an off/on cycle set things back to normal,
* It is also a subwoofer amp with switchable low-pass crossover, so it's good for messing with subwoofers for experimenting. I've used that feature on a normal speaker to find an air leak on a woofer, (so the rest of the mid/upper frequencies wouldn't mask where the noise was coming from,)
* Along with the sub amp feature, it will auto-on if you want,
* It is small enough to fit in smaller spaces... though it is heavy.
* It can be bridged for 150'ish watts into 8 ohms... though I've used it bridged here and there with a 4 ohm sub without the fan even coming on.
* It's old school transistor driven, and non-switching power supplied for less possible issues with noise.
Not to sound like a cheerleader or anything, but if you've been waiting to pick up a good measurement amp, I really like this one for that purpose... and $99 it just a fantastic deal. It feels like one of those old-school beefy and heavy amps that seems like it will last for 20-30 years.
If I didn't already have two...
TomZ
This is a really good amp for doing measurements on speakers in my experience, and for a few reasons...
* It has enough power to do measurements and really test the output on most speakers as you get farther along during crossover prototyping,
* It is pretty durable, with short circuit protection, I can vouch for that myself. After a short on mine while prototyping a crossover, it clicked and went on fan-protect mode with a red light on the front. After finding the short and removing, an off/on cycle set things back to normal,
* It is also a subwoofer amp with switchable low-pass crossover, so it's good for messing with subwoofers for experimenting. I've used that feature on a normal speaker to find an air leak on a woofer, (so the rest of the mid/upper frequencies wouldn't mask where the noise was coming from,)
* Along with the sub amp feature, it will auto-on if you want,
* It is small enough to fit in smaller spaces... though it is heavy.
* It can be bridged for 150'ish watts into 8 ohms... though I've used it bridged here and there with a 4 ohm sub without the fan even coming on.
* It's old school transistor driven, and non-switching power supplied for less possible issues with noise.
Not to sound like a cheerleader or anything, but if you've been waiting to pick up a good measurement amp, I really like this one for that purpose... and $99 it just a fantastic deal. It feels like one of those old-school beefy and heavy amps that seems like it will last for 20-30 years.
If I didn't already have two...
TomZ
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